News information

2025-11-06

FANGKUAI is Exhibiting at the Indonesia International Heating Technology Exhibition 2025

We, Zhengzhou Fangkuai Boiler Co., Ltd. (Fangkuai), are excited to announce our participation in the Indonesia International Heating Technology Exhibition 2025. We will be showcasing our advanced boiler systems engineered for higher efficiency, lower emissions, and sustainable energy performance. Join us at Booth No. B1-08 from November 5–7, 2025 at the Jakarta Convention Center.

About the Exhibition

The event brings together EXPO BOILER, EXPO BIOMASS, EXPO PUMPS & VALVES, and EXPO CRANE — creating a comprehensive platform for technology exchange and business collaboration across the industrial heating and energy sectors in Southeast Asia.

What We Will Present

At the exhibition, we will present our integrated solutions including biomass boilers, industrial steam systems, and full power plant EPC services. Our products emphasize:

  • Higher thermal efficiency to reduce fuel consumption and operating costs;
  • Lower emissions to meet stricter environmental regulations;
  • Scalable EPC integration for turnkey power plant projects;
  • Reliable after-sales support and performance optimization services.

Event Details

Date: November 5–7, 2025

Venue: Jakarta Convention Center, Indonesia

Booth: B1-08

Why Visit Our Booth

We welcome industry partners, plant owners, EPC clients, and technology scouts to visit our booth and explore collaboration opportunities. Whether you are planning a biomass retrofit, a new power plant EPC project, or seeking high-efficiency boiler equipment, our engineers will be available for technical discussions and project consultations.

Visit our booth / Contact us

FANGKUAI is Exhibiting at the Indonesia International Heating Technology Exhibition 2025

We, Zhengzhou Fangkuai Boiler Co., Ltd. (Fangkuai), are excited to announce our participation in the Indonesia International Heating Technology Exhibition 2025. We will be showcasing our advanced boiler systems engineered for higher efficiency, lower emissions, and sustainable energy performance. Join us at Booth No. B1-08 from November 5–7, 2025 at the Jakarta Convention Center.

About the Exhibition

The event brings together EXPO BOILER, EXPO BIOMASS, EXPO PUMPS & VALVES, and EXPO CRANE — creating a comprehensive platform for technology exchange and business collaboration across the industrial heating and energy sectors in Southeast Asia.

What We Will Present

At the exhibition, we will present our integrated solutions including biomass boilers, industrial steam systems, and full power plant EPC services. Our products emphasize:

  • Higher thermal efficiency to reduce fuel consumption and operating costs;
  • Lower emissions to meet stricter environmental regulations;
  • Scalable EPC integration for turnkey power plant projects;
  • Reliable after-sales support and performance optimization services.

Event Details

Date: November 5–7, 2025

Venue: Jakarta Convention Center, Indonesia

Booth: B1-08

Why Visit Our Booth

We welcome industry partners, plant owners, EPC clients, and technology scouts to visit our booth and explore collaboration opportunities. Whether you are planning a biomass retrofit, a new power plant EPC project, or seeking high-efficiency boiler equipment, our engineers will be available for technical discussions and project consultations.

Visit our booth / Contact us

2025-11-06

NEW

Fangkuai shines at the Qingdao Pharmaceutical Machinery Exhibition, empowering the future of the pha

Precise collaboration, intelligently creating the future.

The 67th National Pharmaceutical Machinery Expo (Autumn 2025) and China International Pharmaceutical Machinery Expo were held in Qingdao. As a leading representative in the industrial boiler industry, Fangkuai Boiler Co., Ltd. made a strong presence at the exhibition, with its booth located in Hall CW-9 (West Entrance). The booth was bustling with visitors and became a vibrant attraction.

Focusing on industry needs, innovative solutions attract attention.

The pharmaceutical industry places stringent demands on steam quality, system stability, and environmental performance during production. Fangkuai understands this, and at this exhibition, we highlighted our latest research and developments in clean energy, efficient heat transfer, and intelligent control. Whether it was pure steam boilers for aseptic production, condensing technology that significantly improves energy efficiency and reduces operating costs, or intelligent control systems that enable remote monitoring and predictive maintenance, these products were the focus of inquiries from visitors.

Technical experts gathered for professional exchanges and shared developments.

During the exhibition, Fangkuai Boiler dispatched its core technical team, led by Sales Director Mr. Li Xiaohui. They held in-depth and fruitful discussions with each visiting customer. They not only thoroughly explained the technical advantages behind their products, but also provided forward-looking system application strategies and feasibility recommendations, targeting the individual pain points of different pharmaceutical companies.

Strength earns trust, and the grand on-site event confirms brand reputation.

The Fangkuai booth, located at the west entrance of Hall CW-9, was bustling with visitors throughout the exhibition. The constant flow of professional visitors and the lively discussions were a testament to the value of the Fangkuai brand and products, both in the market and among customers. Numerous new and existing customers expressed their willingness to further deepen cooperation, which instilled greater confidence in our continued commitment to the pharmaceutical industry.

Empowering the Industry, Creating a Shared Future

This trip to Qingdao was not only a successful brand showcase, but also an in-depth dialogue with market leaders. Adhering to the "innovation-driven" philosophy, Fangkuai will continuously refine its products and optimize its services, striving to provide more reliable and intelligent steam power support for the green upgrade and high-quality development of the pharmaceutical industry.

2025-10-24

NEW

High Pressure Steam Boilers: The Driving Force of Modern Industrial Steam Systems

Let's get one thing straight. When we talk about industrial steam systems, we're not all talking about the same setup. The difference between a low-pressure heating boiler and a true High Pressure Steam Boiler is like the difference between a family car and a heavy-duty mining truck. One provides comfort; the other delivers the raw power necessary for serious industrial manufacturing and energy generation.

steam boiler

If you operate in chemical processing, large-scale manufacturing, or power generation, you understand that ordinary steam won't meet your demands. Your processes require force, high temperatures, and unwavering reliability. That's where High Pressure Steam Boilers come in. They are the powerhouse core of critical industrial steam systems, driving turbines, facilitating chemical reactions, and sterilizing equipment on a scale that defines modern production.

This guide is written for plant managers, facility engineers, and operations directors who need practical knowledge about these essential assets. We'll cut through the complexity to explain what makes High Pressure Steam Boilers different, how they integrate into broader industrial steam systems, where they're absolutely essential, and the key factors for specifying and maintaining them.

high pressure steam boiler

Defining High Pressure Steam Boilers in Industrial Contexts

So, what exactly qualifies as a High Pressure Steam Boiler? In simple terms, it's a boiler designed and built to operate above 15 pounds per square inch gauge (psig). That's the common regulatory threshold where "low-pressure" ends and design specifications become significantly more stringent.

In the realm of industrial steam systems, the term High Pressure Steam Boiler typically refers to units operating at 100 psig and far beyond—commonly 150 psig, 250 psig, or exceeding 1,000 psig in utility power plants.

This "pressure" is far more than just a gauge reading. It represents the potential energy density within the steam. Higher pressure directly translates to:

  • Higher Temperature Steam: The saturation temperature increases with pressure. Steam at 150 psig is about 366°F (186°C), while at 600 psig it exceeds 486°F (252°C).

  • Greater Force and Density: The steam is more compact and powerful, making it dramatically more effective for performing mechanical work and transferring heat in industrial processes.

  • Engineered for Rigor: These boilers are fabricated to meet rigorous ASME Boiler and Pressure Vessel Code (Section I) standards. This mandates robust materials like high-tensile steel alloys, precision engineering, and strict operational controls, distinguishing them from standard heating boilers.

Core Function: How High Pressure Boilers Generate Power for Industrial Steam Systems

The basic principle—heating water to create steam—remains the same. The execution within industrial steam systems is where engineering takes center stage.

  1. The Pressure Vessel: This is the fortress-like heart of the system. Constructed from thick steel drums and/or an extensive network of tubes, it must withstand tremendous internal stress indefinitely. The integrity of this vessel is paramount in any industrial steam system.

  2. Intense, Controlled Combustion: Generating high-pressure steam requires concentrated heat release. Burners are precisely tuned, and the furnace geometry is optimized for maximum heat absorption. Fuels range from natural gas and oil to coal or biomass, depending on the plant's design and fuel economics.

  3. Non-Negotiable Water Treatment: This is arguably the most critical support system for any High Pressure Steam Boiler. Impurities in feedwater become catastrophic under high pressure and temperature. They cause scale—which insulates tubes, leads to overheating and failure—and corrosion. A comprehensive demineralization plant and precise chemical treatment program are mandatory investments that protect the entire industrial steam system.

  4. Superheating: The Key to Power Generation: Many High Pressure Steam Boilers include a superheater section. After steam leaves the boiler drum, it is passed through special tubes exposed to the hottest flue gases. This raises its temperature above the saturation point for its pressure, creating "dry," high-energy steam. Superheated steam contains more BTU per pound and prevents condensation in turbine blades, making it essential for efficient power generation within industrial steam systems.

steam boiler cost

Critical Components That Ensure Safety and Efficiency

Understanding these key parts is essential for anyone responsible for specifying or maintaining these industrial steam systems.

  • The Economizer: A fundamental efficiency device. This heat exchanger uses hot exhaust gases to preheat the incoming feedwater before it enters the High Pressure Steam Boiler. It directly reduces fuel consumption.

  • The Superheater/Reheater: Essential for power applications, these are carefully placed in the gas path to achieve precise final steam temperatures required by turbines.

  • High-Pressure Feedwater Pumps: These are heavy-duty, multi-stage pumps designed to force water into the pressurized boiler drum against extreme resistance. Their reliable operation is non-negotiable.

  • Safety Valves – The Ultimate Guardians: Every High Pressure Steam Boiler is equipped with multiple, code-mandated safety valves. Set to open automatically at a predetermined pressure, they are the final, critical safeguard against overpressure incidents in industrial steam systems. Regular testing is law.

  • Advanced Control Systems: Modern units rely on fully automated control with PLCs or DCS systems. They continuously monitor and adjust pressure, temperature, water level, and fuel flow to maintain optimal, safe, and efficient operation 24/7.

Essential Applications: Where High Pressure Industrial Steam Systems Are Non-Negotiable

You will find these boilers at the core of industries where process demands are extreme.

  • Electric Power Generation: The classic application. High-pressure, superheated steam is the working fluid that spins turbines connected to generators. The efficiency of the High Pressure Steam Boiler directly dictates the plant's "heat rate" and operating cost.

  • Industrial Process Heat & Driving Reactions:

    • Chemical & Petrochemical Plants: For distillation columns, catalytic crackers, and reactor heating.

    • Pulp & Paper Mills: For digesting wood chips and drying massive paper sheets on rollers.

    • Food & Beverage Processing: For large-scale retort sterilization (canning) and other high-temperature processes.

  • Cogeneration (Combined Heat & Power - CHP): A model of supreme efficiency. A High Pressure Steam Boiler drives a turbine for electricity. The lower-pressure exhaust steam is then captured and used for facility heating, cooling, or other processes, maximizing the value extracted from the fuel within an integrated industrial steam system.

  • Marine Propulsion: Naval vessels and some large commercial ships use high-pressure boiler systems to drive steam turbine propulsion engines.

steam boiler price

Key Considerations for Specifying and Operating These Systems

For Buyers & Specifiers:

  • Define Real Requirements: Precisely determine needed pressure (psig), steam temperature, and flow (lbs/hr). Oversizing leads to inefficiency; undersizing cripples production.

  • Fuel Strategy: Analyze long-term fuel availability, cost, and environmental regulations (e.g., NOx limits) for your region.

  • Prioritize Efficiency Features: Look for integrated economizers, air preheaters, and condensing flue gas heat recovery (where applicable) to maximize ROI.

  • Plan for the Entire System: Consider footprint, installation logistics, boiler room ventilation, and integration with existing industrial steam systems.

  • Choose a Partner, Not Just a Vendor: Select a manufacturer with proven expertise in pressure vessel fabrication and a strong network for technical support and parts.

For Operators & Maintenance Teams:

  • Champion Water Treatment: This is your primary defense against downtime. Monitor chemistry daily and maintain treatment equipment meticulously.

  • Invest in Certified Operators: These are complex industrial steam systems. Skilled, certified personnel are essential for safety, efficiency, and longevity.

  • Adhere to a Rigorous Maintenance Schedule: Follow manufacturer and insurance-mandated schedules for internal inspections, tube cleaning, burner tuning, and safety valve testing. Implement predictive maintenance like vibration analysis.

  • Manage the Entire Steam Loop: A well-maintained High Pressure Steam Boiler can be undermined by faulty steam traps, leaks, or poor insulation downstream. Manage the entire distribution system.

The Final Takeaway: Power Demands Responsibility

A High Pressure Steam Boiler represents a major capital investment and serves as the kinetic heart of mission-critical industrial steam systems. It delivers the powerful, high-temperature steam that enables essential manufacturing and energy production. This capability carries an inherent responsibility for rigorous engineering, meticulous operation, and unwavering preventative maintenance.

The decision to implement or upgrade to a High Pressure Steam Boiler should be driven by a clear, quantified process demand that lower-pressure alternatives cannot satisfy. When that need exists, a properly specified, well-maintained high-pressure system becomes a reliable and powerful asset for decades, forming the robust core of your industrial steam systems.

By understanding the principles, components, and operational commitments outlined here, you are better equipped to make informed decisions—ensuring your plant's most powerful workhorse delivers performance, safety, and value every day.

2025-12-04

What Is a Thermic Oil Boiler? Working Principle, Benefits, and Industrial Uses

A practical guide to thermic oil (thermal oil) boilers: how they operate, main components, industrial applications, maintenance and safety best practices.

Introduction: Why Thermic Oil Boilers Matter

Thermic oil boilers (also called thermal oil heaters) are closed-loop heating systems that use a heat transfer oil to deliver high-temperature heat without the high pressures associated with steam systems. They are widely used across process industries where stable, precise, and high-temperature heating is required.

What Is a Thermic Oil Boiler?

A thermic oil boiler heats a specially formulated heat-transfer oil and circulates it through a closed piping loop to supply heat to process equipment. Key features include:

  • Operating at low or atmospheric pressure while achieving high temperatures (often up to 350°C / 662°F).
  • Using thermal oil as the working medium to transfer heat efficiently.
  • Reducing water-related issues like scaling, corrosion and boiler blowdown.

Key Components of a Thermic Oil System

  • Heating coil / Heater body: where fuel heat is transferred to the oil.
  • Burner: can run on gas, diesel, heavy oil, biomass or coal.
  • Circulation pump: circulates oil through the system and to process loads.
  • Expansion tank: accommodates oil volume changes with temperature.
  • Control & safety systems: temperature controllers, safety cut-offs and alarms.
  • Thermal oil (heat transfer fluid): engineered fluids resistant to oxidation and thermal breakdown.

How a Thermic Oil Boiler Works — Step by Step

  • Fuel combustion: the burner generates heat.
  • Heat transfer: heat flows from the furnace to the heating coil and into the thermal oil.
  • Oil circulation: the pump sends hot oil to the process heat exchangers, ovens, presses or reactors.
  • Heat delivery: oil transfers thermal energy to the equipment, then returns cooler to the heater.
  • Reheating: the cycle repeats; the expansion tank accommodates volume changes.

This closed-loop arrangement enables precise temperature control and minimizes contamination risks.

Advantages of Thermic Oil Boilers

  • High temperature at low pressure: safe operation compared with high-pressure steam for equivalent temperatures.
  • Excellent temperature control: systems can maintain setpoints with fine precision (often ±1°C).
  • Lower maintenance: absence of water reduces corrosion and scaling issues.
  • Fuel flexibility: supports gas, oil, biomass and other fuels where applicable.
  • Long service life: with proper maintenance, systems can last 15–20 years or more.
  • Multi-zone distribution: suitable for plants that need distributed heat at different points.

Common Industrial Applications

  • Food processing: frying, baking, drying and distillation.
  • Chemical & petrochemical: reactor heating, distillation and tank heating.
  • Plastics & rubber: mold heating and extrusion processes.
  • Textile & dyeing: stenter machines, drying and finishing.
  • Wood processing & plywood: hot press machines and laminating.
  • Asphalt & bitumen: tank heating and mixing plants.
  • Pharmaceutical: reaction vessels and solvent recovery.

Thermic Oil vs Steam Boilers — Quick Comparison

Feature Thermic Oil Boiler Steam Boiler
Operating Pressure Low / atmospheric High pressure
Max Temperature Up to ~350°C Typically lower at safe pressures
Safety Higher (no high-pressure risk) Lower (pressure-related risks)
Maintenance Lower (no scaling/blowdown) Higher (water treatment, blowdown)
Temperature Control Very precise Moderate

Fuel Options and Operating Costs

Thermic oil systems can use a range of fuels. Choice depends on local availability, cost and emissions policy:

  • Natural gas — clean and efficient where available.
  • Diesel/heavy oil — common in regions without gas infrastructure.
  • Biomass — environmentally friendly option if compatible burners and handling systems are used.
  • Coal — still used in some regions but with higher emissions and regulatory hurdles.

Operating costs are influenced by fuel price, system efficiency, insulation quality and maintenance regime.

Maintenance Tips to Extend System Life

  • Regularly test and monitor thermal oil quality (oxidation, viscosity, contamination).
  • Inspect and clean heating coils and furnace surfaces to remove soot and deposits.
  • Maintain circulation pumps and check flow rates to prevent overheating.
  • Calibrate temperature controls and safety interlocks periodically.
  • Replace thermal oil when degraded (typical service life 3–5 years depending on conditions).

Safety Considerations

  • Prevent oil overheating by ensuring correct flow and avoiding dead-legs in piping.
  • Protect piping and components with adequate insulation and fireproofing.
  • Install reliable high-temperature cutouts and emergency shutdowns.
  • Keep water away from thermal oil circuits—water contamination can cause dangerous pressure spikes.
  • Train operators on hot-oil system handling and emergency response.

Conclusion

Thermic oil boilers provide a safe, efficient and precise method for delivering high-temperature heat in industrial settings. Their low-pressure operation, excellent temperature control and lower maintenance requirements make them an excellent alternative to steam for many process industries. To select the right system, match capacity, temperature range and fuel choice to your process needs and consult experienced suppliers for proper design and commissioning.

2025-11-28

Parts of a Steam Boiler: Full Breakdown of Key Components and Their Functions

Introduction

Steam boilers are fundamental to many industrial processes and building heating systems. They convert water into steam using a heat source, then deliver that steam for heating, power, or process use. Knowing each boiler component and its role helps operators improve efficiency, avoid failures, and enhance safety.

What Is a Steam Boiler?

A steam boiler is a pressurized vessel that produces steam by applying heat to water. Boilers are used in power generation, manufacturing, food processing, chemical plants, textiles and HVAC systems. Common boiler types include fire-tube, water-tube and electric boilers; component names and layouts vary but core functions are similar.

Main Parts of a Steam Boiler and Their Functions

Burner

The burner mixes fuel (gas, oil, biomass) with air and ignites it to produce heat. A well-tuned burner maximizes combustion efficiency and minimizes emissions.

Combustion Chamber / Furnace

The combustion chamber (furnace) contains the flame and combustion gases, providing space and time for complete fuel combustion while protecting the boiler shell from direct heat.

Boiler Shell / Pressure Vessel

The shell or pressure vessel holds the water and steam under operating pressure. It must be constructed from high-quality steel to withstand temperature and pressure stresses safely.

Heat Exchanger & Tubes

Heat transfer takes place through tubes or heat-exchange surfaces. In fire-tube boilers hot gases pass through tubes surrounded by water; in water-tube boilers water flows inside tubes heated by external gases.

Steam Drum (Water-Tube Boilers)

The steam drum separates steam from water and provides a reservoir of saturated steam. Internals (separators) remove moisture to deliver dry steam to the system.

Mud Drum / Water Drum

Located at the bottom of water-tube boilers, the mud drum collects sediments and solids. Periodic blowdown removes accumulated impurities to protect tubes and maintain heat transfer.

Feedwater System (Pump, Preheater, Deaerator)

Feedwater pumps supply treated water into the boiler. Deaerators remove dissolved oxygen and CO₂ to reduce corrosion. Preheaters (economizers) use exhaust heat to raise feedwater temperature and improve efficiency.

Water Level Gauge

Displays the water level inside the boiler. Maintaining correct water level is critical—low water can cause tube overheating; high water may carry over wet steam.

Safety Valve

The safety valve is a fail-safe that automatically vents steam when pressure exceeds safe limits. Regular testing and calibration are required by code.

Pressure Gauge

Shows boiler pressure in real time; operators monitor it to ensure safe and efficient operation.

Blowdown Valve

Used to purge water containing high dissolved solids or sludge. Blowdown maintains water quality, prevents scale formation, and preserves heat-transfer efficiency.

Steam Outlet Valve

Controls steam delivery from the boiler to distribution piping or process equipment. Proper valve sizing and control prevent pressure and flow issues downstream.

Chimney / Flue Gas Stack

Exhaust gases exit via the chimney. Modern plants often include particulate and gas cleanup (ESP, baghouse, scrubbers) to meet emissions limits.

Optional / Advanced Components

  • Economizer: Recovers waste heat from flue gases to preheat feedwater, saving fuel.
  • Superheater: Raises steam temperature above saturation (superheated steam) for turbines and processes.
  • Air Preheater: Preheats combustion air using flue gas heat to improve combustion efficiency.
  • Control Panel / PLC / SCADA: Automates monitoring and control of combustion, water level, and safety interlocks.
  • Condensate Return & Heat Recovery: Returns condensed steam to the boiler, reducing makeup water and fuel needs.

How These Parts Work Together — Simplified Process Flow

  • Fuel and air are mixed and burned in the burner.
  • Heat generated in the furnace transfers through tubes/heat exchangers to the water in the shell.
  • Water becomes steam and rises to the steam drum (for water-tube boilers).
  • Steam passes through superheaters if superheated steam is required.
  • Produced steam exits via the steam outlet valve to users; exhaust gases exit through the chimney.
  • Feedwater is treated, deaerated and pumped back; economizers recover waste heat to preheat it.
  • Safety valves, pressure gauges and control systems ensure safe operation.

Maintenance Tips for Key Components

  • Regularly inspect and tune the burner for correct air–fuel ratio to reduce soot and NOx.
  • Conduct scheduled blowdown to remove sludge from the mud drum and reduce scale.
  • Test and calibrate safety valves annually as required by code.
  • Maintain proper water treatment to prevent corrosion and limescale.
  • Clean heat-transfer surfaces and economizers to keep efficiency high.
  • Keep the combustion chamber and flue pathways clear of deposits; inspect refractory as needed.
  • Use automated monitoring (PLC/SCADA) for early fault detection and trending.

Why Knowing Boiler Parts Matters

Familiarity with each boiler component helps operators and engineers:

  • Operate safely and avoid dangerous conditions (dry-firing, overpressure).
  • Optimize fuel use and improve overall thermal efficiency.
  • Reduce unplanned downtime and maintenance costs.
  • Make informed decisions on upgrades (e.g., add economizer or condensate return).

Conclusion

Every part of a steam boiler—from the burner and combustion chamber to the steam drum, economizer and safety valve—plays a vital role in safe, efficient steam production. Good design, qualified installation, correct water treatment, and routine maintenance are the foundations of reliable operation and long service life. For complex issues or major repairs, always consult certified boiler engineers.

2025-11-25

8 Tips Oil Boiler Problems And Solutions | Fix Them

Introduction

Oil boilers are a popular choice for heating homes, but like any heating system, they can encounter issues from time to time. In this guide, we''ll explore eight common oil boiler problems and provide practical solutions to help you get your system running smoothly again. Whether your oil boiler won''t turn on, isn''t heating properly, or is experiencing other issues, we''ve got you covered.

Oil Boiler Not Turning On

Problem: If your oil boiler isn''t starting up, it can be frustrating and uncomfortable, especially during cold weather.
Solution: Start by checking the thermostat settings to ensure they''re correctly adjusted. If the settings are correct, investigate further by examining the circuit breaker or fuse box. A tripped breaker or blown fuse could be the culprit. Next, confirm that you have an adequate supply of oil in the tank. An empty tank won''t allow your boiler to start. If all of these checks are in order and the boiler still won''t turn on, it''s time to call a professional technician. They can diagnose and repair any electrical or ignition system problems that may be causing the issue.

Oil Boiler Is Starting But Not Heating

Problem: If your
oil boiler starts up but isn''t producing enough heat, there could be several reasons behind this issue.
Solution: Begin by checking the thermostat settings to ensure they are set at the desired temperature. If the settings are correct, inspect the fuel supply. Make sure you have an adequate oil level in your tank. Then, to address potential clogs or dirt affecting the burner''s efficiency, clean or replace the burner nozzle and electrodes. Regular maintenance is essential; this includes cleaning the heat exchanger and chimney to ensure the boiler operates efficiently and effectively.

Oil Boiler Keeps Turning Off On Its Own

Problem: If your oil boiler frequently shuts down unexpectedly, it may indicate an underlying issue.
Solution: First, you should check the oil filter. If it''s clogged, it can restrict fuel flow and cause the boiler to shut down. Then, inspect the thermostat and wiring for loose connections or faults. Last, ensure that the vent pipe and chimney are free of obstructions, as blocked ventilation can lead to safety concerns. If the problem persists, it''s advisable to contact a professional technician who can diagnose and fix the issue.

Oil Boiler Produces Smoke or Soot

Problem: Smoke or soot production can signify combustion problems in your oil boiler.
Solution: To address this issue, begin by cleaning or replacing your burner nozzle to ensure proper fuel atomization. Then, check the combustion air supply and adjust it as needed for optimal combustion. You should have regular chimney inspections. Because the blockages or obstructions can cause incomplete combustion, leading to soot production. Scheduled maintenance is crucial for keeping the combustion chamber clean and efficient.

Oil Boiler Leaking Water

Problem: Water leaks can lead to significant damage to your boiler and surrounding areas.
Solution: To address a water leak, first turning off the boiler and isolating it from the power source. Identify the source of the leak. It could be a damaged seal, valve, or pipe. If you are uncertain about the cause or how to fix it, it''s best to contact a professional plumber or technician who can assess the situation and make the necessary repairs.[embed]https://youtu.be/mHFpNUo6G4o?si=2cBYn-vWnLKyDMdX[/embed]

Oil Boiler Making Noise

Problem: Unusual noises from your oil boiler can be unsettling and indicate various issues.
Solution: If you hear banging or clanging, it may be due to trapped air in the system. So bleed the radiators to release the air. Rattling or rumbling sounds may suggest sediment buildup in the tank, which requires thorough cleaning. Squealing or whistling noises could indicate a faulty pump or motor, which should be inspected and replaced if necessary.

Oil Boiler Isn''t Producing Enough Heat

Problem: If your oil boiler isn''t providing sufficient warmth, it can be frustrating and inefficient.Solution:
  • Check the thermostat settings and adjust them if needed.
  • Inspect the radiators and bleed them to remove any trapped air.
  • Ensure that the heat exchanger and burner are clean and functioning correctly.
  • Consider upgrading to a more energy-efficient boiler model for improved performance.

No Oil Coming Out When Bleeding Boiler

Problem: When attempting to bleed your oil boiler, if no oil comes out, there may be an issue with the fuel supply.
Solution:
  • Check the oil tank to ensure it''s not empty; arrange for an oil delivery if necessary.
  • Inspect the oil line for any kinks, clogs, or leaks and repair as needed.
  • If the problem persists, consult a professional technician to diagnose and address fuel system issues.

Conclusion

Maintaining and troubleshooting your oil boiler is essential to ensure it operates efficiently and reliably. By thoroughly understanding these common problems and their solutions, you can address issues as they arise and enjoy a warm and comfortable home throughout the heating season. If you want to learn more about the details of oil boiler problems and solutions, please contact us at +0086 13838529852.

2025-11-18

What Is a Combi Boiler? Complete Guide to How It Works and Why It’s Efficient

What Is a Combi Boiler? Complete Guide to How It Works and Why It’s Efficient

Introduction

If you’re planning to upgrade your home heating system, you’ve probably come across the term “combi boiler.” Short for combination boiler, this compact unit has become one of the most popular choices in modern homes—thanks to its high efficiency, space-saving design, and on-demand hot water supply.

This guide explains exactly what a combi boiler is, how it works, its benefits and drawbacks, and whether it’s the right choice for your home.

Combi Boiler

What Is a Combi Boiler?

A combi boiler (or combination boiler) is a single, compact heating system that provides both central heating and instant domestic hot water directly from the mains. Unlike traditional boilers, it doesn’t require a separate hot water cylinder or cold water storage tank, making it ideal for apartments, small houses, and homes where space is limited. When you turn on a hot water tap, the boiler immediately heats water on demand—so you won’t run out of hot water and you avoid the energy loss of storing hot water.

How Does a Combi Boiler Work?

A combi boiler operates using a highly efficient heat exchanger system. Here’s a simplified step-by-step process:

  • Flow detection: When you open a hot water tap or shower, the boiler detects water flow via sensors.
  • Ignition: The gas burner ignites and transfers heat to the primary heat exchanger.
  • Instant heating: Cold mains water passes through the exchanger and is heated instantly.
  • Delivery: Heated water is sent directly to the tap or shower.
  • Heating mode: When central heating is required, a diverter valve routes hot water to radiators instead.

This instant heating process eliminates the need for a storage tank and ensures maximum energy efficiency.

Key Components of a Combi Boiler

Combi Boiler
  • Burner — mixes air and gas to produce heat.
  • Heat exchanger — transfers heat from the burner to water.
  • Pump — circulates hot water through the heating system.
  • Diverter valve — directs hot water to taps or radiators as needed.
  • PCB (control board) — manages sensors, ignition, and safety functions.

Benefits of a Combi Boiler

  • Space-saving: No tank or cylinder required.
  • High efficiency: Modern combi boilers can reach 90–94% efficiency.
  • On-demand hot water: Instant supply without storage losses.
  • Lower installation cost: Fewer components reduce installation time and cost.
  • Easy maintenance: Compact units are simpler to service.

Drawbacks to Consider

  • Simultaneous use: Water pressure may drop if multiple outlets are used at once.
  • Not ideal for very large homes: May struggle to supply multiple bathrooms simultaneously.
  • Dependent on mains pressure: Low mains pressure limits performance.
  • Single point of failure: If the unit fails, both heating and hot water are affected.

Combi Boiler vs System Boiler vs Regular Boiler

Feature Combi Boiler System Boiler Regular Boiler
Hot Water Storage No Yes (cylinder) Yes (tank + cylinder)
Space Required Small Medium Large
Hot Water Supply Instant Stored Stored
Best For Small to medium homes Medium to large homes Large homes / older systems

Energy Efficiency and Environmental Impact

Combi Boiler

Modern combi boilers often use condensing technology to capture heat from exhaust gases and improve efficiency. Replacing an old non-condensing boiler with a new condensing combi boiler can reduce fuel consumption and lower carbon emissions. Pairing a combi boiler with a smart thermostat (e.g., Nest, Hive) further improves efficiency by optimizing heating schedules.

Installation and Maintenance Tips

Installation: Always use a certified Gas Safe / local-qualified engineer. Confirm that mains water pressure is sufficient and choose a location that provides adequate ventilation and service access.

Maintenance: Schedule annual servicing to check the burner, heat exchanger, pressure relief valve, and safety controls. Regularly bleed radiators, monitor boiler pressure (typically 1–1.5 bar), and keep flues and vents clear.

Is a Combi Boiler Right for You?

A combi boiler is an excellent choice if you live in a small to medium-sized home, value instant hot water, and have reliable mains pressure. If your household has multiple bathrooms or high simultaneous hot water demand, consider a system boiler or a regular boiler with a hot water cylinder.

Conclusion

A combi boiler delivers a compact, efficient, and convenient heating solution for many modern homes. With the right installation and regular maintenance, a combi boiler provides reliable heating and hot water while helping reduce energy consumption and space requirements.

2025-11-13

Industrial Boiler Inspection and Maintenance Best Practices for 2025

Industrial Boiler Inspection and Maintenance Best Practices for 2025

Introduction: Why Boiler Maintenance Matters More Than Ever in 2025

Industrial boilers are the backbone of manufacturing and power generation. In 2025, boiler inspection and maintenance have become critical for ensuring operational safety, meeting stricter environmental regulations, and optimizing fuel efficiency. Neglect can cause catastrophic failures, costly downtime, and heavy fines. This guide details the latest inspection and maintenance best practices to keep your boilers reliable, efficient and compliant.

Understanding Industrial Boiler Inspection and Maintenance

Inspection assesses the boiler's physical and operational condition (pressure vessels, tubes, safety systems). Maintenance involves cleaning, repairing or replacing parts to maintain peak performance. In 2025 the trend is shifting from corrective to preventive and predictive maintenance, leveraging IoT sensors and AI analytics for early fault detection.

Key Industrial Boiler Inspection Requirements for 2025

Updated Regulatory Standards

Operators should follow standards such as ASME Section I, EPA emission rules and applicable ISO norms. Newer regulations emphasize emissions control, digital monitoring and traceable maintenance records.

Inspection Frequency (Recommended)

Inspection Type Frequency Key Tasks
Daily Daily Monitor pressure, water level, temperature
Weekly Weekly Visual checks, blowdown verification
Monthly Monthly Safety valve test, burner calibration
Annual Yearly Internal inspection, ultrasonic testing, full shutdown maintenance

Core Inspection Areas

  • Pressure vessel integrity: cracks, corrosion, thinning
  • Combustion chamber and burner performance
  • Feedwater system and deaerator operation
  • Control systems and safety interlocks
  • Emissions & flue gas monitoring

Industrial Boiler Maintenance Best Practices

Routine Maintenance

Daily and weekly checks maintain operational stability. Tasks include:

  • Log and review pressure, temperature and water level
  • Remove soot and ash from heat surfaces
  • Verify burner combustion and air–fuel ratio
  • Perform blowdown as required

Preventive Maintenance

Planned replacements and servicing reduce emergency repairs:

  • Replace seals, gaskets, and worn valves on schedule
  • Inspect and clean economizers and air preheaters
  • Descale and chemically treat water circuits
  • Calibrate instrumentation and controls

Predictive & Smart Maintenance (2025 Trend)

Deploy IoT sensors (vibration, temp, pressure) and analytics platforms to predict failures. Benefits include:

  • Early anomaly detection
  • Reduced unplanned downtime
  • Optimized spare parts inventory

Common Boiler Issues and How to Prevent Them

Problem Root Cause Prevention
Scaling & Corrosion Poor water treatment Chemical dosing, softeners, regular blowdown
Low Combustion Efficiency Incorrect air–fuel ratio Burner tuning, combustion analysis
Pressure Fluctuation Faulty valves or controls Valve testing, recalibration
Tube Leaks Thermal fatigue or corrosion Ultrasonic testing, scheduled tube replacement

Energy Efficiency and Environmental Compliance

Maintenance practices should also drive efficiency and emissions control. Recommended measures:

  • Install economizers and air preheaters to recover heat
  • Implement condensate recovery and return systems
  • Use variable-speed drives for feed pumps and fans
  • Adopt emission controls: SCR for NOx, FGD for SO₂, and particulate capture

Sample Maintenance Schedule (2025 Edition)

Task Frequency Responsibility
Pressure & Temperature Log Daily Operator
Blowdown System Cleaning Weekly Maintenance Crew
Burner Tuning Monthly Certified Technician
Water Quality Testing Monthly Lab Technician
Internal Tube Inspection Quarterly Safety Engineer
Full Shutdown Service Annual Manufacturer / Inspector

Safety Guidelines During Inspection and Maintenance

Safety is paramount. Follow these controls:

  • Apply Lockout–Tagout (LOTO) before maintenance
  • Wear proper PPE: helmets, heat-resistant gloves, face shields
  • Ensure adequate ventilation and gas detection
  • Perform pressure and leak tests prior to restart
  • Document every maintenance action for audits

The Future of Industrial Boiler Maintenance

Looking forward, expect wider adoption of:

  • IoT sensors and cloud monitoring for real-time KPIs
  • AI-driven predictive analytics for failure forecasting
  • Hybrid fuel adaptations (hydrogen/biomass mixes)
  • Advanced materials enabling higher-temperature operation

Conclusion

In 2025, robust industrial boiler inspection and maintenance programs are essential to meet safety, performance and environmental goals. Combine routine checks, preventive care and predictive tools to reduce downtime, cut costs, and comply with regulations. Partner with certified service providers and invest in digital monitoring to ensure your boilers run safely and efficiently for years to come.

2025-11-12

How Much Does a 3 Ton Gas Steam Boiler Cost in 2025? | Complete Price & Cost Analysis

1. Definition

A 3 ton gas steam boiler uses natural gas or liquefied petroleum gas (LPG) as fuel, converting the chemical energy of gas into heat energy to produce steam. This equipment generates 3 tons of saturated steam per hour and is widely used in industries such as food processing, pharmaceuticals, textiles, paper manufacturing, and chemical production. Compared with coal or biomass boilers, gas-fired boilers have the advantages of high efficiency, clean combustion, and simple operation.

2. The Price Range of 3 Ton Gas Steam Boiler

The price range of a 3 ton gas steam boiler varies depending on the design, control system, and auxiliary equipment. Generally, a small vertical gas boiler costs around $7,000–$12,000, while a large horizontal automatic gas boiler can reach $18,000–$35,000. High-efficiency condensing gas boilers, which feature energy recovery systems, may cost even more due to advanced technology and emission control components.

3. Main Factors Affecting the Price

3.1 Boiler Structure and Steam Pressure

Structure: Horizontal gas boilers are more expensive than vertical models because they have a larger heat exchange area, higher efficiency, and more complex design.
Steam pressure: The higher the working pressure, the more demanding the material and manufacturing requirements. For example, a 1.6MPa boiler costs significantly more than a 1.0MPa boiler.

3.2 Control System Type

Manual Control: Cheaper, suitable for users with low automation needs.
Automatic Control: Slightly more expensive but much safer and easier to operate. PLC-based automatic control systems improve combustion efficiency and reduce gas waste.

PLC system

3.3 Environmental Protection Configuration

Equipping the boiler with low-NOx burners and flue gas recirculation (FGR) systems helps reduce nitrogen oxide emissions and meet environmental standards, but increases the cost by about 10–15%.

3.4 Auxiliary Equipment

Including auxiliary devices such as burners, water treatment systems, and economizers increases the total investment but improves operational stability and efficiency.

4. Price Suggestions for Different User Needs

  • Limited budget: Choose a small vertical or semi-automatic 3 ton gas steam boiler for lower initial investment.
  • Efficiency-oriented users: A fully automatic horizontal condensing gas boiler is recommended. Though more expensive, its gas consumption is 10–15% lower, saving cost long-term.
  • Environmentally conscious enterprises: Choose a low-NOx or ultra-low emission gas boiler that meets current emission standards.
gas steam boiler

5. Typical Operating Cost of 3 Ton Gas Steam Boiler

A 3 ton gas steam boiler consumes about 210–250 m³ of natural gas per hour depending on the efficiency (90–95%). The current natural gas price ranges between $0.4–$0.6/m³.

Item Consumption / Hour Unit Price Cost / Hour
Natural Gas 210–250 m³ $0.4–$0.6 / m³ $84–$150
Electricity 25–35 kWh $0.09 / kWh $2.2–$3.1
Labor & Maintenance $1.5–$3.0
Total Operating Cost   $90–$155 / hour

6. Cost Recovery Analysis

Let’s take a $20,000 gas steam boiler as an example. If the cost of each ton of steam is $40 and the selling price is $60, the profit per ton is $20. A 3 ton boiler produces 3 tons of steam per hour, generating a profit of $60/hour. Assuming it operates for 20 hours per day and 300 days per year, the annual profit reaches $360,000, meaning the payback period is less than one year.

7. FAQ

7.1 How much steam does a 3 ton gas steam boiler produce?

It produces 3 tons of saturated steam per hour, suitable for medium and large industrial applications.

7.2 What's the lifespan of a gas steam boiler?

A well-maintained 3 ton gas steam boiler can operate for 15–20 years. Regular water treatment and maintenance can significantly extend its lifespan.

7.3 What are the advantages compared to coal or biomass boilers?

Gas boilers have higher efficiency, lower emissions, and require less maintenance. They are also easier to operate and meet strict environmental standards in most industrial regions.

8. Conclusion

The cost of a 3 ton gas steam boiler depends on factors such as structure, control system, and environmental configuration. Although the initial investment is higher than that of coal or biomass boilers, its high efficiency, clean combustion, and low operating cost make it a preferred choice for modern industrial steam supply. Choosing the right model based on production needs can achieve both economic and environmental benefits.

contact us

9. Contact Us for a Free Quote

We provide professional solutions for gas-fired steam boilers, including model selection, cost analysis, and customized design. Contact our technical team to get a detailed quotation and ensure smooth and efficient operation for your industrial production. WhatsApp: +86 138 3852 9852.

2025-11-06

75T "LEGO" Boiler: Modular Design Leads a New Revolution in Industrial Energy Supply

In the industrial energy supply sector, traditional boilers, due to their large size, complex installation, and poor flexibility, are increasingly unable to meet the diverse and dynamic production needs of modern enterprises. The 75T "LEGO" boiler, with its innovative modular design concept, brings a revolutionary solution to industrial energy supply, becoming a new benchmark for industry development.

Modular Design: Flexible Combination Like Building Blocks

The core appeal of the "LEGO" boiler lies in its modular design. This design breaks down the boiler system into multiple independent functional modules, each with specific functions, such as combustion, evaporation, and superheating modules. These modules are standardized and tested in the factory before being transported to the site for rapid assembly. Taking Fangkuai Boiler's 75T "LEGO" boiler as an example, its modular design significantly shortens the boiler's installation cycle, reducing installation time by more than 50% compared to traditional boilers.

Modular design also gives the boiler extremely high flexibility. Enterprises can freely combine different numbers and types of modules according to their own production needs and site conditions, achieving stepless adjustment of boiler capacity. For example, during peak production seasons, companies can increase the number of modules to boost boiler evaporation capacity and meet the demands of large-scale production; conversely, during off-seasons, they can reduce the number of modules to lower operating costs. This flexible adjustment allows companies to better respond to market changes and improve production efficiency and economic benefits.

High Efficiency and Energy Saving: Enhancing Energy Utilization Efficiency

The "Lego" type boiler excels in energy saving. Its modular design allows each module to operate and optimize independently, avoiding the inefficiency issues associated with partial load operation in traditional boilers. Through intelligent load balancing technology, the boiler automatically allocates the load to each module according to actual needs, ensuring that each module operates under optimal conditions, thereby improving overall thermal efficiency.

Taking Fangkuai Boiler's 75T "Lego" type boiler as an example, this boiler adopts advanced condensing technology and ultra-low nitrogen combustion technology, achieving a thermal efficiency of up to 107%, far exceeding the 85%-90% of traditional boilers. Simultaneously, its nitrogen oxide emission concentration can be controlled below 30mg/m³, meeting the strictest national environmental protection standards. In actual operation, a chemical company using this boiler has saved millions of yuan in fuel costs annually while significantly reducing pollutant emissions, achieving a win-win situation for both economic and environmental benefits.

Intelligent Control: Enabling Remote Monitoring and Maintenance

The "LEGO" boiler is equipped with an advanced intelligent control system, enabling automated operation and remote monitoring. Through sensors and IoT technology, the system can collect real-time boiler operating parameters, such as temperature, pressure, and flow rate, and transmit this data to a cloud platform. Users can view the boiler's operating status anytime, anywhere via a mobile app or computer software, enabling remote control and adjustment.

The intelligent control system also features fault diagnosis and early warning functions. When abnormal conditions occur, the system can promptly issue alarms and provide detailed fault information and solutions, helping maintenance personnel quickly locate and resolve problems. Furthermore, the system can perform big data analysis and prediction based on boiler operating data, proactively identifying potential problems and providing a scientific basis for boiler maintenance and upkeep, extending the boiler's lifespan.

Application Cases: Facilitating Transformation and Upgrading in Multiple Industries

The 75T "LEGO" boiler, with its superior performance and flexible application methods, has been widely used in multiple industries. In the chemical industry, a large chemical enterprise, after adopting Fangkuai Boiler's 75T "Lego"-style boiler, not only solved its steam supply problem during production but also reduced production costs and enhanced its market competitiveness through energy-saving and emission-reduction measures. In the pharmaceutical industry, a pharmaceutical company utilized the boiler's modular design to flexibly adjust its capacity according to the needs of different production stages, achieving efficient operation of the production process.

In the food industry, the 75T "Lego"-style boiler also plays a vital role. A beverage production company, after using this boiler, achieved precise boiler control through an intelligent control system, ensuring steam quality and stability during production, and improving product quality and output. Simultaneously, the boiler's energy-saving effect saved the company significant energy costs, enhancing its economic benefits.

Future Outlook: Promoting Green Development of Industrial Energy Supply

With the arrival of Industry 4.0, the industrial energy supply sector is developing towards intelligence, greening, and efficiency. The 75T "Lego"-style boiler, as an innovative energy supply solution, aligns with the trends and needs of future industrial development. In the future, with continuous technological advancements and innovation, "LEGO"-style boilers will achieve greater breakthroughs in modular design, energy-saving technology, and intelligent control, providing higher-quality, more efficient, and environmentally friendly services for industrial energy supply.

Simultaneously, the promotion and application of "LEGO"-style boilers will also contribute to energy conservation, emission reduction, and green development in the industrial sector. By improving energy efficiency and reducing pollutant emissions, "LEGO"-style boilers will make a positive contribution to achieving the nation's "dual-carbon" goals. It is believed that in the near future, the 75T "LEGO"-style boiler will become a mainstream product in the industrial energy supply field, leading the industry towards a brighter future.

2025-10-30

Boilers are essential for keeping homes and businesses warm and comfortable, but when they start shutting off unexpectedly, it can be frustrating and confusing. Understanding the cause of frequent shutoffs and knowing how to troubleshoot them can save time and money. This article explores common problems that cause boilers to shut off and provides practical solutions to fix them.

Troubleshooting Guide: Why Your Boiler Keeps Shutting Off

The development of social science and technology and technical means has promoted the rapid development of the breeding industry. People obtain meat, eggs, milk, wool, cashmere, hides, silk and medicinal materials from poultry such as chickens, ducks and geese through artificial breeding. For many farms, maintaining a constant temperature living environment for poultry is a top priority.
 
How to choose the type of hot water boiler for heat preservation in farms, Fangkuai Boiler can give you the most sincere guidance and advice.
 
Taking a shrimp farm as an example, we will focus on how users in the aquaculture industry should choose suitable hot water boilers.
 
Generally speaking, shrimp farming requires "cold water", but this "cold water" refers to the natural water temperature in a normal environment, that is, a temperature between 10-20 °C. However, in winter, it is necessary to start the hot water boiler equipment to maintain the temperature of the shrimp pond and ensure that the shrimp can survive normally.
 
In order to meet the needs of the livestock for the environment and diet, a device that can output heat in a lasting and stable manner is required. We can see that in many large farms, one or several steam or hot water boilers will be equipped for the livestock of the farm.
 
The shrimp farm that cooperated with Fangkuai Boiler this time needs to use a boiler to maintain the constant temperature of the shrimp pond. According to the knowledge of Fangkuai boiler sales consultant, the shrimp farm has a total pool volume of 20 tons. The boiler is mainly used in winter, and the water at subzero temperature needs to be heated to about 10°C. After calculation, the technicians of Fangkuai Boiler concluded that a half-ton atmospheric pressure hot water boiler can meet their needs. For this reason, we provided a boiler with an output of 0.35MW (that is, a half-ton capacity). Atmospheric pressure vertical gas hot water boiler (CLSH0.35-95/70-Q). The adjusted hot water boiler can maintain a temperature difference of 14°C between the inlet and outlet water and maintain a constant temperature in the shrimp farm's pool. Combined with the actual situation of the user's project site, the natural gas interface has not yet been connected to the local area. We have customized a plan for using liquefied petroleum gas. The fuel is transported through canned transportation. There is no need to specially prepare a fuel storage site, and it is very clean and convenient to use.
 

Guidance Scheme for Selection of Hot Water Boilers for Thermal Insulation of Farms

According to the structural design, the use of atmospheric hot water boilers should be of no risk. This is mainly due to the fact that the top of the atmospheric hot water boiler is open to the atmosphere, and the internal pressure is always the same as the outside. Many residential and breeding centers choose to use this type of boiler.

Although the safety of atmospheric pressure hot water boilers is very high, this does not mean that the furnace personnel can be negligent. A relatively old steam boiler located in a fish farm in Wangtan Village, Rudong Town, Rudong County, exploded due to improper operation of the boiler operator.

When using a normal pressure hot water boiler, pay attention to the regular observation of the water level to avoid low water level and dry burning. Otherwise, there will be certain dangers, and the service life of the boiler will be seriously reduced. Boiler operators should pay attention to the following matters:
       1. Strictly implement various rules and regulations, earnestly study the professional knowledge of boilers, continuously improve the level, and ensure the safe and economic operation of boilers.
       2. After the normal pressure hot water boiler is put into use, the unit and individual may not change the boiler structure, valve and pipeline system without authorization.
       3. Inspect and inspect various equipments according to regulations before taking over, including: water level of water tank (hot water tank, expansion water tank), energy consumption (boiler gas meter), thermometer (hot water tank temperature, boiler heat medium water temperature), etc. Check the operation records, check the equipment, and learn more about the boiler operation when you transfer the shift.
       4. The succession personnel will go to the boiler room in advance to prepare for the work according to the regulations, shifts and prescribed time, and understand the boiler operation.
       5. The shifter should prepare in advance, carry out serious and comprehensive inspections and investigations, and keep the boiler running normally.
       6. The shifting staff should introduce the relevant problems of equipment operation, water quality and boiler discharge to the successor. If the handover procedure is not completed, the handover personnel must not leave the job. 7. Keep the boiler body clean when the boiler is running, no dirt, no leakage, no rust and corrosion, and fill in the equipment maintenance record carefully and in detail.
       8. The boiler room is one of the key departments of the boiler unit. Except for the boiler room staff, relevant leaders, and safety, security, and department management personnel, other personnel are not allowed to enter without permission.
       9. It is forbidden to store inflammable, explosive and other miscellaneous items in the boiler room. It is necessary to install oil drums and oil pots with a small amount of lubricating oil and cleaning oil. Store them at the designated place and pay attention to check whether there is explosives in the burning.
       10. The boiler room should be equipped with fire-fighting equipment, carefully managed, do not move or use it for other purposes.
       11. The floor, walls, doors and windows of the boiler room are always kept clean and hygienic.
       12. The supervisors should check the operation records and environmental sanitation regularly and irregularly, find problems and solve them in time.
       13. Go to work on time according to the prescribed time, do a good job of shifting records, and do not leave the job casually.
       14. It is strictly forbidden to drink alcohol, sleep, gamble, and fight in the boiler room.
       15. After equipment failures and accidents are reported in time (timely reported to the person in charge at night), the written accident report is written in a realistic manner. After the investigation is clear, after the responsibility is clarified, the accidental loss is caused to the dereliction of duty, and the responsibility is handled.

How to make the normal pressure hot water boiler operate safely?

There are three reasons for the explosion of a gas boiler: gas (fuel), air and heat. Once the three reach a certain level, it is not far from the explosion of the boiler.

The key to preventing the explosion of gas boilers is to prevent the three from reaching certain limits at the same time. Among them, air is ubiquitous, it is very difficult to remove this condition, so the focus of explosion-proof is concentrated on gas and heat sources. Therefore, almost all gas explosion-proof technologies at this stage focus on how to treat gas and heat sources.

A large number of accidents indicate that the explosion of the gas boiler boiler or flue site is caused by the accumulation of gas and air in the furnace or flue, and the fire or high-temperature heat source. The combustible mixture is obviously mixed with air from the air. Forming. Therefore, the core of preventing gas boiler explosion is to prevent the boiler from entering the furnace when it is not running (no flame in the furnace); and it should be noted that the boiler must be "fire and other gas" when it starts, that is, the gas is first supplied and then ignited to form a heat source.

To this end, "Steam Boiler Safety Technical Supervision Regulations" and "Hot Water Boiler Safety Technical Supervision Regulations" clearly stipulate that: gas (including fuel, pulverized coal) boilers must be equipped with reliable ignition program control and flameout protection devices; Explosion-proof doors should also be installed in inflammable and explosive parts such as furnaces and flue ducts. The first half of the regulation is actually based on the mechanism of the explosion to prevent the formation of a mixture of gas and air, and to ensure the realization of "fire and other gas"; the latter part is used as a remedy, once the furnace or flue explosion, through the explosion-proof door Reduce the damage caused by the explosion.

How to prevent gas boiler explosion?

Pickling is the main method for removing a large amount of oxidizing substances and corrosion products inside a gas boiler, and also has the effect of eliminating scale. The pickling process is usually carried out after 1-3 weeks of boiler operation. FANGKUAI Boiler summarizes the steps of boiler pickling for your reference and understanding.

First, cleaning tools
       Boiler energy saver, steam drum, water wall, hydrochloric acid, ammonium bifluoride.

Second, the cleaning method
       1. First, at the beginning of the pickling work, the boiler's economizer, steam drum and water wall are filled with demineralized water.
       2. The boiler is ignited. When the temperature of the boiler rises to 70-80 ° C, the boiler is turned off, and then the pickling operation can be performed. Before the pickling operation, the superheater should also be recharged with demineralized water until the water overflows into the steam drum to prevent acid or acid vapor from being introduced into the superheater.
       3. When the acid is charged into the boiler, the boiler should not be ignited under any circumstances. The steam drum and other venting holes should be opened to remove the hydrogen generated by the reaction of acid and iron. Before making sure that the hydrogen has dissipated, avoid open flames or use electrical equipment that generates sparks to avoid the risk of hydrogen explosion.
       4. Finally, after the acid filling is completed, let the boiler and economizer soak for about 6 hours in the solution, then drain the acid and rinse the superheater with demineralized water. The acid is discharged. After the acid is drained, the boiler feed water pump is operated, and the water of one economizer is filled into the boiler to prevent the water supply shutoff valve from leaking.

Third, matters needing attention
       The gas boiler can be pickled with 5% hydrochloric acid with 0.25% ammonium difluoride inhibitor added. The acid solution is injected into the boiler through the pickling joint on the steam drum down pipe, and the acid filling of the economizer is carried out through the recirculation pipe. The filling of the acid solution should be carried out until the liquid level in the steam drum temporary water level gauge rises significantly until the liquid level rises above the cyclone separator, but it should be noted that the acid liquid cannot enter the superheater, otherwise it will cause serious damage.

How to clean the gas boiler?