bag type dust collector
A, the role of bag filter
Bag filter is a dry dust filter. After the filter material is used for a period of time, a layer of dust accumulates on the surface of the filter bag due to the effects of screening, collision, retention, bag filter diffusion and static electricity. This layer of dust is called the first layer. In the later movement process, the primary layer becomes the main filtration layer of the filter material, and the filter material with larger mesh can also obtain higher filtration efficiency by virtue of the primary layer. With the accumulation of dust on the surface of filter material, the efficiency and resistance of dust collector increase accordingly. When the pressure difference between the two sides of the filter material is large, some fine dust particles attached to the filter material will be squeezed out, thus reducing the efficiency of the dust collector. In addition, the high resistance of the dust collector will significantly reduce the air volume of the dust removal system. Therefore, after the resistance of the dust collector reaches a certain value, it is necessary to clear the ash in time. When cleaning, the initial layer cannot be destroyed, so as not to reduce efficiency.
Second, the application of bag filter
1, iron and steel industry
There are more than 2,300 enterprises in the iron and steel industry, and they are big users of bag filters. Bag filter is widely used in iron and steel industry, from ore crushing, screening, belt transportation, sintering, ironmaking, steelmaking, steel rolling, ferroalloy smelting, coking, lime, refractories, etc., almost every process can be used in the production process, and the use effect is good. Baosteel, Shougang, WISCO, Pangang and other large iron and steel joint companies all have more than 500 bag filters.
Function of bag filter
2. Cement production
There are12,435 cement production enterprises, with an annual production capacity of10.90 billion tons, ranking first in the world, but at the same time causing serious pollution to the environment. For every ton of cement produced, 3 tons of materials need to be processed. China's cement industry emits 22 million tons of dust every year. In 2000, 4,400 small cement enterprises with a capacity of less than 44,000 tons/year were eliminated, with an output of about 200 million tons.
3. Aluminum smelting industry
Great progress has been made in aluminum smelting industry. Metal aluminum is mainly produced by electrolysis, and its main equipment is electrolytic cell. A large number of harmful substances such as fluoride and dust are produced in the production process, which is a serious pollution production process.
4. Other industries
Bag filter is widely used in more than 20 industries such as machinery, storage battery, carbon black, electric power, coal, ceramics, chemical industry, chemical fertilizer, medicine, agriculture, light industry, tobacco, flour, feed, oil processing, grain depot, port transshipment, traffic road construction, garbage incineration, etc.
Application of bag filter
The above is Bian Xiao's knowledge about the function and application of bag filter, which I hope will help you. If you want to know more about bag filter, please stay tuned.