The scope of use of steam boilers is very wide, so it is also one of the more frequently used ones on the market. However, in the daily operation of the steam boiler, certain problems and losses may occur because the quality of the boiler itself is not good enough, or the furnace operator does not operate properly. Zhengzhou Fangkuai Boiler Factory is here to talk about how to solve some common problems in the operation and use of steam boilers.

During the operation of a steam boiler, three common problems are mainly: the exhaust speed cannot meet the requirements, low-temperature corrosion, and damage to the steam and water supply pipes. The common problems of low-temperature corrosion are chemical and electrochemical corrosion. The above two kinds of corrosion occur on the wall whose temperature is lower than the acid dew point. If the dust on the heating area is not cleaned in time, the corrosion rate will be accelerated.

For steam boilers, in addition to corrosion, the common reasons for slow exhaust speed are as follows:
       The filter element of the exhaust outlet is blocked and the inlet filter is blocked. The solution is to replace the filter element, change to a larger pipeline, or shorten the pipeline distance in design. Clean the filter and install a filter.
       Another point is that the steam pipe and water supply pipe of the steam boiler system are damaged and make noise. Deal with this situation in time, and the solution is as follows: if the water supply pipeline is slightly leaked, it will not affect the normal water supply of the boiler or cause the expansion of the fault. It can maintain the operating state in a short time, adjust and use the standby boiler as soon as possible, and do not continue to use it. To avoid intensified failures and threats to personal and equipment safety, boiler operators should contact boiler system maintenance personnel in a timely manner to perform maintenance work on steam boilers.

In addition to the boiler itself, there are other problems in the boiler system, such as centrifugal pumps, burners, condensers and other system components.

Gas boilers are a common type of furnace that uses natural gas as the main fuel. According to the different output media, they are divided into two categories: gas steam boilers and gas hot water boilers. Compared with other types of boilers, gas boilers have some special features in their combustion methods, which can help you better complete boiler selection. Zhengzhou Fangkuai boiler manufacturer will briefly tell you.

First of all, gas-fired steam boilers and gas-fired hot water boilers also have certain differences in their combustion methods. Most of these boilers use fire chamber combustion, and the combustion chamber carries out layered combustion. This type of furnace is generally small and basically less than 20 tons. , Mainly for commercial or civilian use. It is also relatively automatic in the use of fuel regulation.

Gas-fired hot water boilers generally use boiling combustion, and the other is cyclone combustion. The two combustion methods are completely different. Natural gas has an advantage over other fuels in burnout. When the high-temperature flue gas burns out, the furnace is further cooled. Burn-out cooling greatly improves the relative speed with air, which not only strengthens combustion, but also further improves the thermal efficiency of hot water boilers. With less cooling, it is also conducive to the loss of gas; therefore, the operating cost of gas-fueled boilers And there are still great advantages in terms of emissions.

In recent years, gas boilers have undergone continuous technological breakthroughs and improvements. The current operating efficiency has far exceeded coal-fired boilers, biomass boilers, etc., reaching as high as 98%. Therefore, the cost of operation is very cost-effective; The environmental protection factor is also very high. Compared with coal-fired boilers, the nitrogen emission exceeds the relevant standards. In addition, there are many shortcomings such as dust and special maintenance. At present, more and more people choose to abandon the use of coal-fired boilers. Choose a gas boiler.

Through the policies issued by various provinces and cities in my country in recent years, it can be seen that my country’s current environmental protection requirements are becoming more and more stringent. Some areas in Beijing have reached the regional emission standard of 30 mg/m3, which is important for sustainable development. Is very helpful. In combination with the current environmental protection policies, great changes have also taken place in the boiler industry. More and more companies require the use of low-nitrogen-emission boilers, while traditional boilers have high pollution rates, large area, and inconvenient use. Multiple shortcomings are gradually eliminated. So, compared with traditional boilers, what are the outstanding advantages of gas-fired low-nitrogen boilers? Let Zhengzhou Fangkuai Boiler Factory provide you with comprehensive answers.

1. The difference in emissions between traditional boilers and gas-fired low-nitrogen boilers
       Due to the different combustion methods and furnace structures of stratified, chamber, and circulating fluidized bed boilers, the nitrogen oxide (NOx) emissions of these two types of boilers are also quite different. Generally speaking, when using low nitrogen combustion in the furnace In terms of technology, the original NOx emission of the circulating fluidized bed is low, and the original NOx emission of the layer-burning furnace represented by the chain furnace is slightly lower. The pulverized coal industrial boiler is a room-fired boiler. The higher the original NOx emission, the higher the emission of the domestic low-nitrogen boiler. But greatly reduced.

2. Traditional boilers and gas-fired low-nitrogen boilers use different technologies
       Stratum fired, chamber fired, and circulating fluidized bed boilers can adopt different low-nitrogen combustion technologies according to different combustion methods. For stratified fired boilers, air classification and flue gas recirculation are often used to achieve low-nitrogen combustion; Under the influence of recirculation on the combustion of the typical section of the stratified combustion boiler, combined with the air classification technology, the NOx is catalytically reduced by semi-coke; the furnace reduction denitrification technology is an emerging furnace denitrification technology in recent years, and the combustion flame area is sprayed at a reasonable position Ammonia, to achieve direct denitration in the high temperature flame. Low-nitrogen boilers mainly adjust the position and distribution of secondary air outlets and coal feed outlets, or increase flue gas recirculation systems.

3. The safety of traditional boilers and gas-fired low-nitrogen boilers is different
       After a large number of experiments on the low-nitrogen combustion technology in the furnace of stratified, room-fired, and circulating fluidized bed boilers, they have been verified in engineering applications. Generally speaking, low-nitrogen boilers have higher safety and are also used by many users. The reason for choosing it.

It can be seen that the gas-fired low-nitrogen boiler is a kind of product that is truly energy-saving and environmentally friendly. The low-nitrogen boiler technology adopted by it has been verified by many tests and engineering applications, and has achieved significant results, not only protecting the environment, but also As far as the users are concerned, energy saving is also achieved, which is a double effect.

Zhengzhou Fangkuai Boiler Factory has tracked and investigated the boilers used by customers for many years. It is shown that boilers that undergo regular inspections can extend their service life by at least 5 years and have a very low failure rate compared to boilers that are not inspected and maintained. Regular maintenance and inspection can prevent most of the boiler problems and reduce losses for users.

Zhengzhou Fangkuai Boiler Factory recommends that, whether it is a hot water boiler or a steam boiler, an oil or gas boiler, regular maintenance and overhaul of the boiler is essential, that is, a regular maintenance of the boiler in use or out of service. an examination. Not only the boiler equipment itself, but the inspection of the entire boiler system is also necessary. The use of auxiliary equipment and its auxiliary equipment are inspected. The regular inspection of gas boilers generally includes: internal inspection, external inspection, hydraulic test, valve pump valve inspection, etc. The specific content is as follows.

Internal inspection: refers to the inspection of the gas boiler in shutdown and the inspection of the safety status of the boiler. Internal inspection can find out what needs to be maintained or maintained during boiler design, manufacturing, installation and repair.

External inspection: refers to the inspection of the safety status of the gas boiler under the operating state, that is, the inspection under the operating state of the hot water boiler in the past. External inspection can find problems in boiler management, the operating level of boiler equipment, and whether safety accessories and protection devices meet the requirements, and at the same time can check the operating status of the boiler system.

Water pressure test: refers to the pressure test performed on the pressure parts of the boiler with water as the medium and the specified test pressure. The purpose of the hydraulic test is to inspect the strength and tightness of the pressure parts of the boiler, which complements the internal inspection and external inspection to form an inspection of the gas boiler and boiler system.

It can be seen that the gas-fired boiler physical examination can troubleshoot boiler hazards, reduce boiler accidents, and ensure that boiler equipment can maintain good operating conditions during heating and heating in winter.

Since the condensing gas steam boiler was developed and used, it has been loved by many users and friends, and the frequency of use is also very high. This is mainly because the condensing gas steam boiler has incomparable advantages compared with ordinary boilers. Let Zhengzhou Fangkuai boiler and boiler manufacturer tell you the specific advantages.

1. The condensing gas steam boiler has good energy saving efficiency
       The steam boiler needs to consume a large amount of thermal energy to produce thermal efficiency during operation and use. The condensing steam boiler generates continuous thermal power in the form of steam, which has better energy-saving effects during use, lower power consumption, and energy Play a good thermal effect, so it can save more input costs for enterprises.

2. Condensing gas steam boiler has high environmental protection and cleanliness
       Most of the condensing gas-fired steam boilers use natural gas as fuel. There are no pollutants or waste gas generated during the entire working process, no peculiar smell, no smoke and pollutants discharged into the air, so it meets the relevant standards for environmental protection. Because of its low pollution emission, it is also used extensively by many companies.

3. The system operation of the condensing gas steam boiler is stable
       In operation, the condensing gas-fired steam boiler also has an intelligent controller to increase the safety factor of the equipment, allowing the equipment to effectively avoid various unsafe factors during the entire operation process, and the boiler also passes overheating or power failure protection and water level Or the steam volume is monitored in real time, so the real-time dynamics of the equipment can be monitored at any time. Once any abnormality occurs, automatic safety protection measures can be activated to ensure the safety of the entire boiler.

The above are the three advantages of the condensing gas steam boiler described by Zhengzhou Fangkuai Boiler Factory. In addition to the above, the condensing gas steam boiler has a very strong tolerance, can maintain a long service life, and is extremely cost-effective.

Condensing gas boilers play an important role in many industries and fields. Due to the excellent performance of the boiler itself, it also has a high reputation and evaluation among users. Everyone knows that condensing gas boilers are very easy to use, but "easy to use" is based on correct use. Zhengzhou Fangkuai Boiler Factory will briefly introduce some precautions when using condensing gas boilers.

1. Precautions before using condensing gas boiler
       Before installing the condensing gas boiler, you should strictly follow the manufacturer's instructions and use the specified additives (neutral acid and alkali cleaning agent) to clean the pipeline system. Since the condensing boiler is made of silicon-aluminum-magnesium alloy, if the water supply is strongly alkaline during use, the boiler may be corroded. Therefore, according to regulations, the H value of the boiler's water supply must be within a certain range of values.

2. Matters needing attention in the process of using condensing gas boiler
       When using a condensing gas boiler, a filter must be installed, otherwise the boiler will be damaged. Before the boiler runs, the water must be circulated for a certain period of time to remove impurities in the system. After the operation of the condensing gas boiler is completed, the safety discharge valve must be opened to remove impurities; and the system return pipe of the condensing gas boiler also needs to install a filter to prevent impurities or sludge from blocking the system and damaging the boiler.

3. Precautions after using condensing gas boiler
       After the condensing gas boiler is in use, it needs to be maintained and maintained as required, and any problems are discovered and resolved in time to avoid further damage to the system. If it is a new system using a condensing gas boiler, it should be flushed sufficiently to remove the flux, grease, metal chips and other residues generated during installation; if the old system is used, it should be noted that it should be flushed again to ensure that metal oxides and other corrosive properties are removed Residues, to ensure that all low points in the system are emptied.

Modern gas-fired steam boilers have also been continuously optimized and improved with the continuous advancement of modern social technology, and more and more applications are used in various industrial production demand fields, gradually replacing traditional boiler equipment. Today, Zhengzhou Fangkuai boiler manufacturer will introduce to you the characteristics and advantages of modern gas-fired steam boilers.

1. Modern gas-fired steam boiler system structure is simpler and more compact
       Modern gas-fired steam boilers use natural gas as fuel, and do not need to prepare slag discharge facilities, dust collectors and other auxiliary equipment; the boiler body and its ventilation, water supply, control and auxiliary equipment are all set on a chassis, which can be directly assembled and shipped, and then increase The requirement of compact structure makes the structure content simpler, which simplifies the specific work operation process, and the use process is simpler and more convenient.

2. Modern gas-fired steam boilers have higher thermal efficiency and are more environmentally friendly
       The gas-fired steam boiler uses gas combustion, which not only has clean fuel, but also adopts environmental protection technology. The combustion efficiency and exhaust gas temperature are basically the same as those of large-capacity industrial boilers. The exhaust pollution is low, which not only reduces the expenditure of combustion energy, but also is more effective. Improve heating efficiency and reduce production of pollutants. It is a modern production and processing equipment that conforms to the development of environmental protection.

3. The modern gas-fired steam boiler adopts automatic operation more convenient
       With the continuous deepening and improvement of technology, modern gas-fired steam boilers can meet the requirements of automated operation, and can better meet the requirements of automation in terms of ignition and extinguishing. On the one hand, it improves the safety in the production process and on the other. On the one hand, it reduces labor costs. The powerful automated operation further caters to the intelligent production needs of modern enterprises.

The above is the characteristics and advantages of gas-fired steam boilers summarized by Zhengzhou Fangkuai Boiler Factory. Through technological advancement, modern gas-fired boiler steam boilers have greatly improved the safety factor and thermal efficiency.

Atmospheric hot water boilers are often used in the field of heating and heating, because the boiler does not carry pressure, it is safer to use, and it is very safe to use in places with a large flow of people. At present, the atmospheric pressure hot water boilers on the market are mainly classified according to the fuel used. The most frequently used ones are gas-fired atmospheric pressure hot water boilers, oil-fired atmospheric pressure hot water boilers and electric heating atmospheric hot water boilers, which are clean The advantages of environmental protection, high thermal efficiency, safety and stability. Zhengzhou Fangkuai boiler manufacturer will focus on the above three types of atmospheric hot water boilers, and tell everyone what are the characteristics of these boilers and which places are suitable for.

Gas-fired atmospheric hot water boilers refer to boilers that use natural gas, coal gas, biogas, and liquefied petroleum gas, among which natural gas is used more. Therefore, the gas-fired atmospheric hot water boilers we usually refer to mostly refer to natural gas. Pressure hot water boiler. Because the fuel used is clean energy, it has the characteristics of environmental protection, low pollution, meets air pollution standards, is conducive to environmental optimization, and has a high degree of intelligence, which is simple and quick to operate.

Oil-fired atmospheric hot water boiler refers to boiler products that burn into light oil and heavy oil. It can be said to be a substitute for gas boilers. In some areas, gas boilers need to be opened with natural gas pipelines, but in remote areas without natural gas pipelines, they cannot be used. Therefore, we only need to use an oil storage tank to use hot water boilers. It is a type of boiler product with higher comprehensive performance.

The fuel used by the electric heating normal pressure hot water boiler is electric energy, and there will be no exhaust emissions, so it is a very environmentally friendly and clean boiler. Electric boilers have advantages in terms of performance, operation and safety, but there is a disadvantage that their operating costs are higher.

The above is the summary of the three types of atmospheric hot water boiler models by Zhengzhou Fangkuai Boiler Factory. You can choose a more suitable boiler model according to your own needs and actual conditions.

Oil and gas boilers are dual-purpose boilers for oil and gas. They can use oil fuels and gas fuels. They have a wide range of applications and are therefore favored by more and more users. But everyone can't ignore the regular maintenance of oil and gas boilers, which can effectively extend the service life of the boiler and reduce losses. Zhengzhou Fangkuai Boiler Factory summarized the following maintenance methods for oil and gas boilers, hoping to help everyone better operate the boiler equipment.

First of all, it is necessary to check the body of the oil and gas boiler, focusing on whether the boiler body has water leakage, boiler fouling, flue carbon deposits, boiler leaks and flue chimneys are unobstructed, and if problems are found, corresponding repairs should be taken in time .

Secondly, the oil and gas boiler should be descaled regularly, and the following methods can be selected:
       1. When the boiler is shut down for a short time, it is more convenient to use wet maintenance. First, drain the water in the hot water boiler, remove the scale and dirt in the boiler, close all the valves and holes of the boiler, pour softened water into the boiler, and dissolve the prepared sodium hydroxide or trisodium phosphate into the boiler; Then heat the boiler water to 100°C under a low fire, and let the gas out of the furnace. When the boiler water emerges from the air valve, close the air valve, water supply valve, furnace door and baffle to seal the boiler. The general method of alkaline solution preparation is to add 5-8kg sodium hydroxide or 10-12kg trisodium phosphate per ton of water.
       2. When the boiler has been shut down for a long time, dry maintenance is more appropriate. First, drain the water in the boiler, remove the scale and dirt in the boiler, pour softened water into the boiler, increase the pressure of the boiler to 0.1MPa with a slight fire, and then stop burning; when the furnace temperature and pressure decrease, turn on the blowdown again The valve drains the boiler water and uses the waste heat of the boiler to dry the boiler; then puts a desiccant in the furnace, closes all valves and orifices, and seals the boiler. The desiccant generally uses quicklime or silica gel. The amount of quicklime is 2 to 3 kg per cubic meter of volume and 1 to 3 kg of silica gel per cubic meter of volume. The desiccant should be placed in an open container and placed evenly; afterwards, check it every 1 to 2 months. After the silica gel expires, it can be dried and reused.
       3. Maintain the valves, pressure gauges, thermometers and automatic exhaust valves on the hot water pipe network. Check the anti-corrosion layer and heat preservation of the pipeline surface, the indication of the pressure gauge and thermometer, the single flow valve, the stop valve, the automatic exhaust valve and the manual exhaust valve at the end, and repair and replace in time if any problems are found.
       4. Clean the hot water pipe network of the boiler to prevent corrosion. Discharge the hot water pipe network, check the water quality, replace the softened water, etc., take the wet maintenance of the whole hot water pipe network, and then close all the valves after filling it with softened water.
       5. Maintenance of the burner of the oil and gas boiler is mainly to clean the internal carbon deposits of the burner, clean the burner nozzle, clean the fan, clean the control device, etc. and seal the burner with a plastic bag.
       6. Maintain the circulating pumps and feed water pumps of the oil and gas boilers, check, repair and replace bearings, water seals, noise, wiring, etc.; add lubricating oil to the manual disc pump at the same time to clean up the grease and dust on the surface of the water pump, and cover it with plastic.
       7. Maintain the water softener equipment, whether the water softener is operating normally, whether the salt tank and hoses are leaking, whether the resin is effective, etc., if any problems are found, repair it immediately; remove the power plug of the water softener after repairing, and discard the salt tank In the brine, seal the connecting pipe between the water softener and the salt tank with tape.

The above is the summary of Zhengzhou Fangkuai Boiler Factory for everyone. Regarding the maintenance methods of oil and gas boilers, I hope to help you better operate and run the boiler.

The combustion method of the boiler equipment is also a factor that the majority of users will consider when selecting the boiler. Depending on the combustion method, the boiler structure and boiler room layout will be different. Today, Zhengzhou Fangkuai boiler manufacturer will briefly introduce to you, what are the more common combustion methods of boiler equipment at present.

1. Diffusion combustion
       Advantages: This kind of combustion method is to mutually diffuse the gas at the nozzle mouth without pre-mixing, and then burn it. The combustion method is relatively simple, and the flame is relatively stable.
       Disadvantages: Due to the long flame, it is easy to produce incomplete combustion, which will produce more carbon monoxide and nitrogen oxides, which is not conducive to the full use of boiler fuel, the improvement of boiler thermal efficiency, and it is difficult to reach boiler emission standards.

2. Fully premixed combustion method
       Advantages: pre-mixing air and gas, heat transfer with multiple radiators, and increased heat transfer intensity. The advantage of using this combustion method is that the burning flame is clearer and the thermal efficiency is higher. Disadvantages: Combustion premixing ratio requires fast combustion rate, uniform combustion, high radiation heat transfer efficiency, flame temperature lower than 1200℃, no incomplete combustion and low NOx flue gas temperature, easy to condense, good heat recovery, and high efficiency.

3. Flameless combustion
       A combustion method that uniformly mixes the space before combustion with the gas in the gas boiler. When using this method, the oxygen required during the combustion process of the gas does not need to be obtained from the surrounding air, and only needs to be mixed with the air to reach the combustion zone to achieve instantaneous combustion completion.
      

It can be seen that there are currently three common combustion methods for boiler equipment. When purchasing a boiler, you can compare the advantages and disadvantages of the combustion method to select suitable boiler equipment.

For a boiler to operate stably and efficiently, all links must be properly coordinated without making mistakes. For gas-fired boilers, it is necessary not only to have softened water treatment facilities, but also to carry out regular sewage discharge, which cannot be ignored. Zhengzhou Fangkuai Boiler Factory is here to tell you what you need to pay attention to when draining gas boilers.

1. It is necessary to check the condition of the blowdown valve of the gas boiler before the blowdown. If the blowdown valve is seriously damaged (bent stem, stuck valve, serious leakage, etc.), it is not allowed to use it for blowdown.

2. Before pollutant discharge, the shift leader and neighboring furnaces need to be notified.

3. It is necessary to find out that the gas boiler under maintenance has been isolated from the sewage system before discharge.

4. It is forbidden to blow off two gas boilers at the same time.

5. The sewage discharge place and the passage leading to the sewage discharge point should have sufficient lighting, otherwise the sewage discharge is not allowed.

6. When someone is overhauling the sewage system, it is prohibited to discharge sewage.

Winter is the peak period for heating and heating, and it is also a period when gas-fired hot water boilers are used very frequently. In order for the boiler to complete the heating work normally, stably and continuously, the daily maintenance of the boiler must not be ignored. Zhengzhou Fangkuai Boiler Factory is here to tell you some daily maintenance techniques for gas-fired hot water boilers during use.

1. Gas hot water boiler needs regular maintenance during operation
       During the operation of the gas hot water boiler, the equipment needs to be protected. There are two points that need special attention: one is that the boiler mouth should be burned out during use; the other is that the place where the equipment is placed during use needs to be relatively dry, that is, there should be no water on the ground, otherwise it will be To a large extent, the boiler equipment is exposed to humidity.

2. Regular inspection equipment for gas-fired hot water boilers
       When using a gas-fired hot water boiler, a better maintenance method is to check the equipment regularly, so that you can not only understand some problems that may occur inside the equipment, but also prevent accidents during the work of the equipment to a large extent. Whether it is the contact power supply of the equipment or the structure of some internal parts of the equipment, if corrosion is found, it needs to be replaced in time.

3. Adopt different operation methods according to different gas-fired hot water boiler types
       In order to make the equipment can be applied to more fields, gas-fired hot water boiler manufacturers often introduce a variety of different types of boilers; and different types of equipment need to use different methods for maintenance, most of which use two methods. Maintenance equipment is dry maintenance and wet maintenance.