The advantages of the boiling furnace are: ① not only can burn high-quality coal, but also can burn the general grate furnace and room-fired furnace can not be burned in various types of low-quality coal; ② buried tube in the bed of the heat transfer is very good, about 5 to 10 times the ordinary boiler tubes; ③ due to the boiling bed of the combustion temperature is low, the flue gas in the generation of NOX is small, such as in the feed in the right amount of limestone or dolomite, you can be in the coal to get rid of the sulfur, so that the exhaust smoke in the The content of SO2 decreases.

The disadvantages of the boiling furnace are: ① fine particles of fuel in the boiling bed is easy to be carried out by the flue gas, so the loss of unburned, combustion efficiency is lower than the room combustion furnace; ② more fly ash in the flue gas, the boiler is prone to wear and tear of the heating surface; ③ blower required for the blower fan wind pressure is high, so the power consumption is large; ④ boiling bed of coal and the layout of the buried tube is difficult to be uniform. ⑤Burning high ash inferior coal, in order not to pollute the environment with a large amount of fly ash, must be equipped with high efficiency and large capacity ash removal device. Because of the above reasons, the development of large-capacity boiling furnace boiler is still difficult.

Industrial applications

Mainly used in the contact method of sulfuric acid, as FeS2 system SO2 generation device.