Electric bag filter and bag filter are high efficiency filter, two devices strengths and the suitable for their own characteristics under the conditions of all obtained the good application effect. Electrostatic precipitator with its low resistance, strong ability to adapt to changes in flue gas, low maintenance workload, widely used in metallurgy, electric power, building materials industries, so far, is still in the leading position in the field of environmental protection. With the development of economy and technology in China, citizens greatly enhance environmental protection consciousness, environmental protection has become a social focus problems, with high efficiency, and low emission concentration of dust removal equipment has become the development trend of environmental protection, as a result, the superiority of cartridge dust removal significantly. Especially in recent years, the filter cartridge dust removal technology in the host structure and performance of filter material, automatic control level and adapt to various working conditions have great progress, led to the rapid development of the filter cartridge removal technology.