Horizontal Fire Tube Gas Boiler


Horizontal Fire Tube Gas Boiler

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This standard at age requirement horizontal fire tube boiler flue soot, sulfur dioxide and nitrogen oxides emission concentration maximum permissible emission limits, and the blackness. This standard applies to coal-fired capacity and intended use of the fuel and emissions of air pollutants manage outside gas boiler boiler, and construction project environment (65t / h) In addition to power generation boilers and pulverized coal is greater than a single output 45.5MW impact assessment, design, final acceptance and after the completion of the sewage management.

Why low nitrogen horizontal fire tube boilers are more popular in the market? In China, coal pollution is getting worse. In many industries, not only the hotel's heating, operation of the plant machinery, as well as the needs of people's lives and so on. In many places we need to use gas burners. Combustion gas released a lot of atmospheric pollutants. According to the data, the impact of coal emissions of atmospheric pollutants on the ecological environment is getting worse, here to introduce you to why the low nitrogen boiler popular? 1, more professional in terms of low nitrogen boilers, conventional boilers cost first general, conventional boilers used in China is a certain proportion of gas and air for combustion are mixed in, so that the mixing temperature of the aerosol generated by the combustion is relatively high, resulting in low efficiency of energy supply. Second, the existing gas boiler has become the main way of the city's small and medium enterprises use boilers. The main cause of ozone exceeded targets is nitrogen oxide from gas boilers and motor vehicle emissions due to the use of conventional boilers burning coal can not be completely full. Finally, the safety of conventional boilers is problematic, flammable and explosive, and at a temperature change of circumstances such as insufficient fuel, can lead to explosion. 2, the most important advantage of the well-known low nitrogen low nitrogen boiler boiler most predominant feature is the external energy saving, a low nitrogen boiler pipes by using a relatively low thermal conductivity of the heat insulating rock wool insulation, thereby reducing heat boiler amount, to achieve energy saving effect. Low NOx combustion technique premix, by improving fuel combustion condition, thereby suppressing the generation of nitrogen oxide, rather than a simple flue gas treatment. 3, in addition to environmental reasons people choose low-nitrogen in addition to environmental protection boiler, boiler advantages in energy saving is also very obvious. Low nitrogen boiler, the use of advanced technology and zero pressure swirl mixing valve technology, the ratio of air and gas is always constant, variable load, the late running costs can be substantial savings. Also reduce the operating costs of enterprises. Therefore, low nitrogen boiler is the best choice, but also the most sensible choice. To promote the implementation of environmental protection plan, accelerate the improvement of air quality, speed up the process of using low nitrogen boilers to reduce emissions of nitrogen oxides, nitrogen oxides and reduce PM2.5 due to the formation of the secondary reformer. Give us more space to control air pollution.

Problems coal horizontal fire tube boiler gas boiler gas coal problems are: 1, more coal ash, 2, unevenness of coal particles, 3, coal contains a large amount of impurities, 4, a lower heating value of coal, 5 when combustion is not easy to ignite fire, 6, coal moisture content uncertain. 7, does not burn coal, slag high carbon content. In general, use is preferably designed coal boiler design coal or coal close, in order to ensure stable combustion. In recent years due to the growing tension surrounding the coal supply, coal supply has become diversified, coal quality is very different than before coal, have a great impact on the stability of the boiler combustion and normal heating operation. Impact of coal combustion boiler stable for: calorific value of coal is coal reflects an important indicator of good or bad, when the low calorific value of coal to a certain value, will not only affect the incomplete combustion instability and can lead boiler flameout, the outlet temperature of the boiler is difficult to compliance, affecting the normal operation. Volatile combustion and can be deposited at lower temperatures, as the combustion heat, the temperature rapidly increased coke particles, provide an extremely favorable conditions for ignition and combustion, volatiles further increased coke deposition and internal voids and the external reaction area, will help improve the speed of burning coke. Thus, the greater the content of volatile, nonflammable, the less fixed carbon in the coal component, the easier coal burning ember, devolatilization of many voids, increases the surface area of ​​the reaction, the combustion reaction is accelerated. When the volatile content is reduced, pulverized coal ignition temperature significantly increased, the hot increases, difficult fire, ignition time required becomes longer, the combustion stability is reduced, shifting the center of the flame, furnace absorbed radiation heating surface reduce heat, increase the heat absorption of the convection heating surface, the rear exhaust temperature, exhaust loss increases.

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