Among them, in the field of soot dust treatment, bag type dust removal has high dust removal efficiency, does not cause secondary pollution, and facilitates the recovery of dry materials. It is widely used at home and abroad, accounting for 80% of the dust removal equipment used. According to statistics, in 2005 China's filter material output was approximately 40 million square meters, of which chemical fiber filter material 30 million square meters, glass fiber filter material 10 million square meters, the output value reached 1.56 billion yuan, an increase of 31% over the previous year. In 2005, the total output value of bag dust collection industry was 6.5 billion yuan (including equipment), a year-on-year increase of 21%. Despite the rapid growth, the industrial demand in the country continues to grow.
In the thermal power industry, since November 2001, the first 200,000 kW unit of bag filter in Inner Mongolia Fengtai Power Plant was put into operation. By 2005, the total area of ​​filtration was 1.2 million square meters, equivalent to 10 million kW units. At the end of 2005, the installed capacity of power stations in the country reached 510 million kilowatts, of which thermal power accounted for 75.6%. It is estimated that by 2010, the total installed power generation capacity will reach 647 million kilowatts, thermal power 476 million kilowatts, and coal consumption will reach 1.4 billion tons. If 50% bag filter is used, a total of 36 million square meters of filter material will be required. If the filter is used for 3.5 years, the required filter material will be 10.3 million square meters per year.
The iron and steel industry is one of the major sources of air pollution. China's steel output has exceeded 300 million tons. According to the calculation of the bag-type dust removal status of Shanghai Baosteel, it needs 21 million square meters. After conversion, it will need to replace 6 million square meters of filter materials each year. In addition, a total of 560 dry cement production lines in China's new line and the old line also need to use high-temperature fiber filter bag dust removal equipment, and waste incineration such as life, medical treatment, and waste disposal also require bag type dust removal equipment.
It can be seen that China has a huge demand for bag type dust removal equipment. Dust filter materials, especially high temperature resistant fiber filters, have broad market prospects.