Coal-fired boilers have always occupied half of my country's boiler market and played an important role in my country's industrial production. However, with the emergence of environmental pollution, coal-fired boilers, as serious pollution equipment, have also received attention and treatment from environmental protection departments. Small and medium-sized coal-fired boilers have gradually withdrawn from the market in recent years. Gas boilers that integrate cleanliness, environmental protection, and high efficiency have been widely promoted and used. In recent years, the frequency of users' use has increased year by year. So, compared with coal-fired boilers, what are the advantages of gas-fired boilers? Let Zhengzhou Fangkuai Boiler Factory answer for you.

Why do so many people choose to use gas boilers? The specific reasons are as follows:
       1. The gas boiler burns completely, and the exhaust gas is pollution-free. The exhaust gas blackness of the gas boiler is 0 Ringelmann level, the SO2 content is very small, and the combustion efficiency can reach more than 99%;
       2. The gas boiler is easy to start and stop, and the temperature rises quickly. For the boiler that runs intermittently, the heat loss during the compression process can be omitted, which is beneficial to improve the thermal efficiency. Of course, due to the rapid temperature rise, the temperature of the furnace body changes drastically, which is detrimental to the life of the boiler.
       3. The fuel gas is completely burned, no fly ash, no particles scouring the furnace body like coal-fired boilers, and no ash on the heat transfer surface, which is good for heat transfer, and from this aspect, it is also good for prolonging the life of the furnace body.
       4. Gas fuel is transported by pipeline, and there is no ash and slag after combustion, which can save the coal storage yard and slag storage yard of coal-fired boilers. This is particularly important for large and medium-sized cities with little land; coal-fired boilers can be removed. The coal transportation system and slag removal system greatly reduce labor intensity and reduce urban transportation.
       5. The calorific value of the gas is stable, and the flow can be easily adjusted through the flow regulating valve, which is convenient to realize the automation of the production process, and the adjustment accuracy is high. It can be seen from the above five points that gas-fired boilers do have incomparable advantages over coal-fired boilers. Changing the fuel structure and vigorously developing the gas industry is an inevitable trend of social development.

At present, shell boilers are used very frequently in various industries and markets, and they are deeply loved by users. So which boiler models are included in the shell boiler? What are the characteristics? Let Zhengzhou Fangkuai Boiler Factory answer for you.

The basic structure of the shell boiler is a double-jacket structure. The outer cylinder is called the boiler shell, and the inner cylinder is called the furnace (fire cylinder). The annular space between the inner and outer cylinders is filled with water, and the inner cylinder is the combustion chamber. When the water vapor medium is under pressure, the shell is under internal pressure, and the furnace bladder is under external pressure. Shell boilers are divided into two types: vertical and horizontal. At present, the commonly used oil and gas boilers are WNS type horizontal internal combustion shell boilers. Shell boiler has the following characteristics:
       1. Both the "pot" that holds water and the "furnace" that burns the fire are contained in a shell—the pot shell;
       2. The metal furnace (furnace) has a small volume, is surrounded by water, has a large degree of water cooling, and has poor combustion conditions. It is necessary to burn high-quality fuel;
       3. The heating surface is small, and the evaporation or heating power is small. Water pipes or pyrotechnic tubes are often installed to increase the heating surface and boiler capacity;
       4. The pot shell has a large diameter, many openings, and irregular shapes. The internal heated part and the unheated part are connected together, and the temperature and thermal expansion degree are different, so the safety of the shell is poor; 5. The boiler structure system is relatively simple, which is convenient for transportation, installation, operation management, inspection and maintenance.

The above are the characteristics of shell boilers summarized by Zhengzhou Fangkuai Boiler Factory. If you are interested in boilers or have technical requirements, you can directly call our online consultation hotline, and professional technical engineers will do it for you one to one. Answer questions.

According to the difference of boiler assembly methods, it can be divided into quick installation, bulk installation and assembled boilers. According to Zhengzhou Fangkuai Boiler Factory's investigation of the current boiler market, the production and use frequency of the quick-installed boiler is much higher than the other two types of boilers, which is inseparable from the advantages of the quick-installed boiler itself. Compared with other types of boilers, what are the advantages of quick-installed boilers? Let Zhengzhou Fangkuai Boiler Factory answer for you.

Quick-installed boiler means that the manufacturer basically completes the above installation work in its own unit. After inspection and acceptance, it is transported to the installation site, hoisted to the boiler foundation, and after inspection and acceptance, the pipes and other rotating machinery (blower, blower, Induced draft fan), and dust removal and environmental protection facilities, you can carry out trial operation. Generally, the production unit has the boiler body in stock, so the installation period is short. Products such as WNS quick-installed gas-fired boilers have relatively high efficiency and heat utilization, and have a small footprint, long service life, and low operating costs. They are generally small furnaces or prefer quick-installed boilers when they are urgently used.

Generally speaking, the boiler from the factory to the installation and acceptance of a boiler is like this: the manufacturer manufactures and processes according to the part drawing and assembly drawing of the boiler drawing, and after the quality inspection is carried out at the factory, it is transported to the boiler installation site for acceptance, and then according to Assemble the assembly drawing of the boiler (main installation: load-bearing frame structure of the boiler, upper and lower drums, water wall boiler tubes on both sides, economizer, superheater, safety device and other pressure components), and then carry out the main body pressure test of the boiler, and it is qualified Afterwards, the auxiliary equipment of the boiler (grate device, coal feeding device, slag removal device, etc.) will be assembled. After each device has passed the test run, the boiler's thermal insulation construction will be carried out, so that the main body of the boiler is basically installed.

Heating is a major issue related to our people's livelihood. Generally, the heating range in northern my country is larger. Since heating is involved, it is inseparable from boiler equipment that provides heating for people. Many heating users have one reason when purchasing a boiler, that is, is it more appropriate to use a hot water boiler or a steam boiler? Regarding this question, let Zhengzhou Fangkuai Boiler Factory answer it for you.

Generally speaking, whether it is small-scale heating or large-scale central heating, hot water boilers are used. At present, the smallest tonnage industrial heating boiler provided by Fangkuai is 1 ton WNS hot water boiler, and the largest is 160 tons of SZS type water pipe hot water. boiler. Regardless of whether it is a large boiler or a small boiler, the pollutant emissions are much lower than the national limit, so that customers have no environmental concerns for decades. There is no need to worry about technology. The WNS series and SZS series hot water boilers launched by the Zhengzhou Fangkuai boiler manufacturer are well-deserved high-efficiency and energy-saving boiler products.

At present, there are few heating methods using steam as a heating boiler. If the heat source is steam, heat exchangers are often used as an intermediary, and the final user is hot water as the heat dissipation medium. If the factory will do this, while producing steam, it will separate the unnecessary steam to heat the office building or workshop. Let's take a look at the disadvantages of steam boiler heating:
       1. If the temperature rises too fast, the radiator will suddenly be hot and cold, and it will easily leak;
       2. If the pressure rises too fast, the radiator is likely to cause metal fatigue, reduce the life span, and easily cause the radiator to burst;
       3. The surface temperature of the radiator is too high, it is easy to burn people, and it also causes bad indoor weather conditions. Indoor dust decomposes above the radiator, causing the wall above the radiator to become black;
       4. If the heating effect of the heating pipe is not good before the steam is sent, it will cause water hammer when the steam is sent. The water in the radiator will form a water hammer under the impact of the steam, which will impact the radiator and pipes. Damage to radiators and pipes;
       5. The water in the boiler is heated to absorb the heat released by the fuel, and the water molecules become steam and have to absorb part of the heat, resulting in a waste of energy.

In summary, the use of steam boilers for heating is not economical and there are many hidden dangers. Therefore, in recent years, the use of steam boilers as heat sources has become less and less, and the use of hot water boilers for heating has increased year by year.

Atmospheric pressure boilers mostly refer to atmospheric hot water boilers. Because of their good safety and stability, they are widely used in the field of heating and heating. Recently, Zhengzhou Fangkuai Boiler Factory has received many inquiries from users about atmospheric boilers. For example, do I need to apply for certificates such as licenses to relevant authorities before using atmospheric boilers? Answer for everyone for free today.

The manufacture and use of atmospheric boilers have long since no longer needed the management of technical supervision departments. If you want to handle it, the technical supervision department can also manage it. But before using atmospheric boilers, there is still a work to be done, that is, the fire department has to go through the formalities and record.

The rated output of the boiler refers to the maximum continuous output of the boiler under the rated parameters (pressure, temperature) and certain efficiency. For steam boilers, it is called the rated evaporation, and the unit is ton/hour; for hot water boilers, it is called the rated heat production. The unit is MW (the old unit is 10,000 kcal/hour).

Before the atmospheric boiler leaves the factory, the boiler manufacturer must provide the boiler quality specification (including the factory certificate, main technical parameters, quality certificate of the main pressure components, non-destructive test report, hydraulic test report, boiler product safety performance supervision and inspection certificate, Technical documents such as boiler general drawing, boiler structure drawing, boiler instruction manual, strength calculation book, delivery list, auxiliary equipment instruction manual, etc. These are all to ensure the safe operation of the boiler and subsequent after-sales service work.

When purchasing and using boilers for the first time, many users do not understand the boiler equipment suitable for their own enterprises. If they purchase inappropriate boiler equipment, it will not only consume manpower and material resources, but also have high economic input costs, which is very uneconomical. Zhengzhou Fangkuai Boiler Factory will tell you today, what are the differences between steam boilers and circulating fluidized bed boilers? How to choose the right boiler equipment?

Circulating fluidization refers to the combustion method of the boiler (in addition to the boiling furnace, the layer burner, the pulverized coal furnace, etc.), the steam refers to the boiler heat exchange medium (there are also the water heater, organic heat carrier furnace, hot blast stove, etc.), so it will There is a circulating fluidized bed steam boiler.

Due to the improvement of boiler safety technology, the "expansion technology" used in the past to improve the safety factor has basically not been adopted. "All-welding technology" is to use the welding method to seal the convection tube bundle and the drum instead of "expanding". This is the first point. The second point is that the application of membrane wall technology also improves the efficiency and tightness of the boiler. The prerequisite to complete the sealing is to adopt "membrane welding on the water wall." The third point is to complete the assembly and delivery of small boilers, and complete the assembly and sealing work in the boiler production plant.

There are many types of boiler equipment on the market, and there are different types of boilers according to different standards. A pressure-bearing boiler is a kind of boiler equipment with internal pressure, corresponding to normal pressure and negative pressure boilers. Pressure-bearing boilers include steam boilers, heat-conducting oil boilers (also called organic heat carrier boilers) and pressure-bearing hot water boilers. Generally, pressure-bearing boilers refer to steam boilers and hot water boilers with a working pressure greater than 0.1MPa. Many industrial users have great demand for pressure-bearing boilers, but they don’t know much about the detailed information of the boilers. Let Zhengzhou Fangkuai Boiler Factory answer for you.

Pressure Boiler is the closed boiler that we usually see. The steam and water system in the boiler is composed of a closed container and pipeline, heated by a flame, and is subjected to fluid pressure during work. It is a special equipment. Therefore, whether it is an enterprise that manufactures a pressure-bearing boiler or an enterprise that uses a pressure-bearing boiler, it is necessary to carry out work related to safe operation and report to the relevant departments.

When there is a serious water shortage in a pressure-bearing boiler, the boiler must be stopped urgently, and water is not allowed to be added to the boiler.

The technical engineer of Zhengzhou Fangkuai Boiler Factory will answer for you: This is mainly because when the boiler suffers from a serious water shortage, it is unknown to what extent the water level of the steam drum will be. It may be that there is no water in the steam drum or the water wall is already Partially boiled and overheated. In this case, if water is forcibly added to the boiler, huge thermal stress will be generated due to the excessive temperature difference, which will damage the equipment. At the same time, when water encounters a hot metal surface, a large amount of steam will evaporate instantly, causing a sudden increase in vapor pressure, and even causing pipe bursts or more serious explosion accidents. Therefore, when severe water shortage occurs, it must be dealt with in strict accordance with the regulations, and it is never allowed to blindly fill the water.

Industrial boilers are special equipment, and a series of installation operations are required before start-up. Everyone must not ignore this process, which is related to the safe and stable operation of the boiler in the later period. So what preparations need to be done before the installation of the industrial boiler? Let the technical engineers of Zhengzhou Fangkuai Boiler Factory answer for you.

First, check the completeness and accuracy of the boiler technical data, and register and file; prepare the technical documents for the construction; handle the boiler installation start-up report; count the equipment parts on site, register the missing parts, and fill in the main parts Quality inspection records; conduct site use of land, water, electricity, gas, and temporary construction; organize the entry of construction machinery and tools, etc.

Acceptance and marking of industrial boiler foundation: The installer shall inspect and accept the boiler foundation together with the construction unit, construction supervisor, and civil engineering personnel, and fill in the basic records; draw the vertical and horizontal centerline of the boiler, the elevation datum point and each foundation according to the coordinates of the drawing The position of the coordinate center.

Installation of industrial boiler steel frame and platform: check the number and external dimensions of the steel frame platform, fill in the record, adjust and correct if it exceeds the standard, and fill in the corrected actual delay in the record table; configure the foundation shim; bulk steel The frame is assembled into a piece, after passing the inspection, it is hoisted in place, and the steel beams are aligned, fixed, welded, and the geometric dimensions after welding are measured, and the steel frame installation records are filled in; the boiler foundation secondary grouting; the steel platform bracket installation.

Installation work of the heating surface of the industrial boiler body: the quality review of the drum and header, especially the quality of the account connecting hole, should be focused on inspection, measurement, and fill in the record, the quality of the heating surface tube, the quality inspection, measurement, and fill in the record; the heating surface Proofing, annealing and tube end treatment of the pipe; installation and fixing of the drum support and drum, and keep records; the hoisting of the header, correct, fix, and make a record; expand the pipe, strictly control the expansion of the pipe Quality, and make a record; before and after the expansion of the tube, each tube should be tested through the ball, and recorded and so on.

The assembly work of the industrial boiler water wall tube row: the piece welding and alignment of the water wall tube, the pass test before and after the welding, and make a record; the installation of the down tube.

Installation of industrial boiler superheater: calibration and ball passing test of superheater serpentine tube, and make records; installation, alignment, fixing and recording of superheater box; alloy of serpentine tube, pipe clamp and hanger Material spectrum analysis and inspection report of steel parts; group welding and geometric measurement records of serpentine pipes, hoisting in place, aligning and fixing, and filling in records of superheater installation.

For industrial boiler equipment, it is naturally a very good product to be able to save energy and reduce emissions. So are industrial boilers all energy-saving representative products? How to achieve energy saving? Let Zhengzhou Fangkuai Boiler Factory answer for you.

For industrial boilers, energy-saving boilers are divided into three categories: steam boilers, hot water boilers, and organic heat carrier boilers.

Among them, divided by fuel are: coal-fired boilers, oil-fired boilers, gas-fired boilers, biomass boilers, electric boilers, among which the most environmentally friendly is electric boilers. According to the fuel, environmental protection boilers can be divided into electric heating boilers, oil-fired environmental protection boilers, gas environmental protection boilers, and coal-fired environmental protection boilers; according to their use, they can be divided into environmental protection boiling water boilers, environmental protection hot water boilers, environmental protection steam boilers and Environmental protection organic heat carrier boiler, etc. Brought here is definitely an environmentally friendly boiler.

In addition to saving energy and protecting the environment, energy-saving and environmentally friendly boilers also have the characteristics of high thermal efficiency, raw material saving, low operating cost, compact structure, small size, and easy transportation and installation. Of course, all environmentally friendly boilers will have the following main features Features: high thermal efficiency, high safety performance, good environmental protection effect, and high economy.

For industrial boiler equipment, no matter how it is maintained and maintained, it has been used for a long time and needs to be scrapped for safety. So, what should be done when industrial boilers need to be scrapped? Let Zhengzhou Fangkuai Boiler Factory answer for you.

Scraping is after the appraisal by the Boiler Inspection Institute of the Technical Supervision Bureau, they will make an appraisal result and issue a scrap certificate. All the procedures are here. Boiler scrap must be based on two factors. One is the low efficiency, which cannot reach 80% of the design efficiency after maintenance and adjustment; the other is that the pressure components of the boiler cannot be guaranteed to be safe. These two conditions are necessary conditions for mandatory scrapping. There are also environmental protection requirements. For example, the environmental protection level of the old boilers has been upgraded, and the scale of the company has been expanded. The original boilers cannot be guaranteed to produce. These are the reasons for scrapping. New boilers must go to the local government (Development and Reform Commission, Economic Commission). Apply for new installations and go to the Boiler Section of the Technical Supervision Bureau for the record.

While maintaining the industrial boiler, the normal operation of the boiler cannot be ignored. For example, the boiler inlet water needs to be softened. This is due to the process that the water entering the boiler turns into steam under high temperature and high pressure. For example, if there are too many calcium ions in the water, fouling will occur, and the accumulation may cause blockage of the pipeline, resulting in an imbalance of local temperature and pressure inside the pipeline. Caused the boiler to explode. Chemical water is to carry out reasonable filtration and chemical treatment of water so that it can meet the water quality standards of boiler water. It is desalinated water.

In which industries can the 1t/h steam boiler be used? First of all, we need to understand this concept. The concept of a 1 ton boiler is that the boiler can heat 1 ton of water from a standard state to steam within an hour. The calorific value that needs to be provided is 600,000 kcal, instead of 1 ton equal to 60. Million kcal. Both of these units can be used as the power calculation unit for boiler equipment, and simple conversion is required between them.

In the same way, the boiler 20t/h means that the boiler produces 20 tons of steam per hour, also called evaporation. This is an indicator of a steam boiler, not an indicator of a hot water boiler.

Light and textile, printing and dyeing, papermaking, food, restaurants, hospitals, schools, almost all industries need to use industrial boilers of different sizes. Some use steam or hot water. The specific choice should be based on the actual situation and needs of users. The boiler is out.

Industrial boilers refer to boiler equipment used in the industrial sector. They are generally divided into two types: one is steam, most of which are low-pressure, low-temperature, and small-capacity boilers. The fire bed is mostly burned and has low thermal efficiency. It is used for power generation or supply. For example, a chemical fertilizer plant can be vaporized with coal to synthesize chemical fertilizers. This is a typical industrial boiler. The second is coal-fired. The gas-fired waste heat boiler is generally used to recover waste heat. Zhengzhou Fangkuai boiler manufacturer recommends that everyone should cooperate with professional boiler technical engineers to complete the process of boiler selection and procurement in accordance with the actual situation and needs of their own enterprises.

100T/H refers to the boiler's evaporation capacity, which means that 100 tons of water is evaporated every hour, producing 100 tons of high-temperature steam. Boiler water should remove carbonate, silicate, sulfate and other salts containing calcium and magnesium ions, and remove calcium and magnesium ions in order to prevent the boiler from producing scales containing calcium and magnesium due to the evaporation of water during operation. . This kind of scale adheres to the boiler steel plate or steel pipe, which prevents heat conduction and damages the boiler steel plate. The boiler contains Fe. If there is salt, it will form a galvanic cell, which will electrochemically cause it to be oxidized, thereby reducing the amount of boiler fouling.