The level of application technology of bag filter in China has been greatly improved.In iron and steel, nonferrous metallurgy, building materials, chemical industry in the furnace flue gas purification, encountered a variety of complex environment and adverse factors, have been overcome one by one, the application of bag dust removal technology continues to expand.
The filter purification of blast furnace gas bag is the first in the world to realize the full dry process, and it is widely applied in large blast furnaces. The net dust content of gas is less than 10mg/Nm3, and it is in the leading position in the world in terms of the number of applications and technical maturity.
Long preheater flue gas dust removal of new dry process cement kiln head, generally USES the electric dust catcher, in recent years, the new new dry process cement kiln are all adopt the bag filter, the years of 5000 ~ 12000 t/d size only have hundreds of cement kiln, process lines all adopt the bag filter, carbon concentration is generally less than 20 mg/m3, even under 10 mg/m3.Bag dust removal technology has been applied more and more in boiler flue gas dust removal of coal-fired power plants. The average service life of filter bags is about 3 years, and some are more than 4 years, with the longest reaching 90 months and 73 months respectively.Bag-type dust remover for 300MW unit has been widely used, and the bag-type dust remover unit for desulfurization, denitrification and dust removal integrated with 2X660MW unit will be put into operation.