Low NOx emission combustion coal chain grate boiler technology a boiler combustion boiler hypoxic hypoxia NOX emissions from combustion is the easiest way to control. And a combustion burner system does not need to make any changes, only control air flow into the furnace in operation, pulverized coal combustion process as close to the theoretical combustion air amount. Low oxygen combustion scheme can reduce NOX emissions by 20% to 30%. The program practical application subject to conditions. Low oxygen furnace, will increase the amount of unburned carbon, and more difficult for the flame of burning coal more obvious; Further, the CO concentration is also increased so that smoke, which will cause decreased boiler efficiency. Another problem is that for certain boilers, hypoxia causes the main combustion steam or reheat steam temperature is low. The burning coal to immediately, boiler efficiency and reduce the magnitude of steam temperature and other properties to determine the appropriate control value of flue gas oxygen furnace outlet (at or economizer) the specific embodiments. Second, air staged combustion technique combustion air into a plurality of strands, it is gradually mixed and pulverized coal combustion, so you can see the local area to reduce the air-fuel ratio, and the thermal decomposition of coal in the ignition phase, due to hypoxia, and thus the nitrogen oxide generation is suppressed. Air classification may be implemented within the combustor, the boiler can be completed within. 85% of the amount of air required for complete combustion is introduced to the main burner, the main burner combustion zone is insufficient oxygen for the fuel-rich conditions. Due to insufficient amount of oxygen, the flame temperature is low, the amount of nitrogen oxides to less generation of fuel nitrogen intermediates (e.g., NCH, NH3, etc.) will therefore not be oxidized NOX. Meanwhile, it has been possible to further reducing NOX generated in a reducing atmosphere to molecular nitrogen (N2 of), as a result reduces NOX emissions. An upper portion of the top floor is provided Ge overfire air (of OFA) spout into the furnace through which about 15% of the rest of the air, to avoid the high temperature flame zone, it is also possible to burn unburned carbon particles, to complete the combustion process.
Fast coal chain grate boiler is a very trustworthy business, whether it is the beginning of cooperation or boiler put into operation, such as a party soon have maintained cooperative attitude, patience, careful. To ensure long-term stability of the latter part of the boiler operation, fast boiler technician fireman's gave us a free people to do the training, precautions and reduce the accident rate method full guidance boiler operation. --customer feedback
How to choose a reasonable price brand of industrial coal chain grate boilers How to choose a reasonable price brand of industrial boilers How to choose a reasonable price brand of industrial boilers, fuel gas-fired boiler, good insulation properties, clean and green, the boiler thermal efficiency advantages, is currently popular on the market a boiler in addition to the gas boiler has its own characteristics, the full implementation of the national coal policy to further promote gas-fired boiler coal-fired boiler to become the user's preferred furnace, gas boiler market demand continues to grow. There are many brands on the market boilers, boiler quality is not uniform. For users, how to choose the right brand of industrial boilers price is very important. How to choose the affordable brand of industrial boilers, we all know that smoke respirable particulate matter is the culprit, but in fact, another reason - nitrogen oxides can not be ignored. Project promotion, gas boilers ownership will continue to increase. Coal combustion gas may reduce the pressure of the coal, to reduce the concentration of airborne particulate matter, nitrogen oxides, but also an important reason for the smoke, which generates an important condition is a high temperature. Gas boiler for heating and the heating temperature needs. Many gas SO2 emissions from large boilers on the one hand is greatly reduced, on the other hand produce large amounts of nitrogen oxides. Fast side gas boiler gas boiler can be reduced to nitrogen oxides emission concentration 30mg / m or less. With the implementation of the new emission standards across the country over the next three to five years to use low nitrogen gas boiler to improve the cleanliness of a large number of industrial buildings and residential heating gas boiler emissions.
Chemical plant coal chain grate boiler combustion efficiency improvement measures which are not high chemical plant boiler combustion efficiency is not high improvement measures what? The low-temperature exhaust gas boiler combustion efficiency test, a higher excess air ratio, suggestions for improvement higher problems: 1, the excess air ratio due to lower general, industrial boilers was 1.4. Due to the different internal structure of each of the boilers, excess air coefficient can be adjusted according to the actual operation, there are sufficient coke burn time in the boiler. Additionally, secondary air may be suitably provided, coke sufficient oxygen for complete combustion, reducing the incomplete loss of solids. 2, due to lower exhaust gas temperature of the boiler exhaust gas temperature account for a large proportion of the boiler heat loss, so the loss of the boiler must be minimized. In one aspect, the dew point should be to prevent corrosion; the other hand, the exhaust gas temperature is not so high. 3, to improve the uniform distribution of air to the boiler furnace combustion efficiency, so as not to cause incomplete combustion of the coal formation dead. As the pilot were grate boiler, the moving speed of the chain should be controlled within a reasonable range of coal on the grate have enough time to complete combustion, but not too long so as not to waste grate. In addition, high-volatile coal, the coal should be possible to improve the quality, to shorten the combustion time, reduce the loss of solids of incomplete combustion.
So in a coal fired stoker-boiler, if you add up the energy in the steam, the energy in the flue gas, the energy radiated from the boiler and all the other forms of energy leaving the boiler, they will exactly equal the energy in the coal burned.Learn More
In Travelling Grate boiler coal is fed at one end of a moving steel chain grate. As grate moves along the length of the boiler furnace, the coal burns before dropping off at the end as ash. Some degree of skill is required, particularly when setting up the grate, air dampers and baffles, to ensure clean combustion leaving minimum of unburnt carbon in the ash.Learn More
SHL series chain grate boiler is the fourth generation chain grate boiler with double drums and vertical structure. 82% thermal efficiency, higher than that of the conventional coal fired boiler. As to assembly boiler, it has larger capacity and more stable performance than packaged boiler.Learn More
Chain grate coal fired steam boilers take coal as fuel to heat water to steam. This chain grate realize the coal automatic feeding and slag automatic remove. Because of the low labour strength, the chain grate steam boiler has been the most popular coal boiler in industry.Learn More
DZL Coal Steam Boiler is a new eco-friendly and energy-saving product.The DZL chain grate stoker boiler can be automatic burning.It has Single drum,water tube and fire tube boiler.It is called as a revolution of industrial boilers by domestic and foreign experts.Learn More
SHL Chain Grate Boiler. SHL series chain grate boiler is the fourth generation chain grate boiler with double drums and vertical structure. 82% thermal efficiency, higher than that of the conventional coal fired boiler. As to assembly boiler, it has larger capacity and more stable performance than packaged boiler.Learn More
The characteristics of the chain grate mix wind and the section air supply In the chain boiler, the coal is moved backward fro m the front of the grate, and the air from the bottom up to theLearn More
Chain Grate Boilers. Chain Grate Boilers fuel can be coal, lean coal, biomass, Coal fired boiler types have DZL, SZL, SHL, DHL, get the coal fired chain grate boiler price now.Learn More
bituminous coal is burned in such furnaces all the principles of com- bustion are violated and smoke producer without smoke, generating a gas Avhich when used in a gas vision societies, which employ skilled firemen to direct the work done the equipment installed in Chicago: Plants with chain-grate stokers,.Learn More
COMBUSTION AND FUELS Types of boiler furnaces Coal-fired boilers can be classified regarding the type of a furnace: grate boilers (stoker), pulverized fuel-fired boilers (PF),Learn More
30 ton Chain Grate Stoker Industrial Biomass Coal Steam Boiler For Central Heating . Product Description . 1. This series boiler is horizontal three-return fire tube and water tube mixed hot water boiler. There is a bundle of spiral gas tube in the boiler drum. And the furnace of the boiler has water wall tubes at the both side.Learn More
Coal fired chain grate boiler(SZL series) szl series coal-fired boilers have high thermal efficiency, strong overload capacity, wide adaptability of coal types, and the technology has reached the world advanced level.Learn More
Coal Fired Steam Boilers adopt Moving Grate or Chain Grate to fire coal. It have automatic slag removing, automatic pressure control and safety valve. Coal Fired Hot Water Boiler Coal Fired Hot Water Boiler is used for central heating, sauna, food processing etc. High efficient and low fuel cost.Learn More
This boiler is a kind of chain grate boiler, which uses coal or biomass as the fuel, it can be called coal fired steam boiler or biomass fired steam boiler.Learn More
30 ton DZL coal-fired boiler is composed of the body, chain grate, the former arch and the after arch, light furnace wall, steel frame and insulating layer etc. The boiler shall adopt sigle drum and vertical layout. The body comprises pot shell, smoke box, water wall tube, and lower header on both sides.Learn More