The biggest disadvantage of dust removal accessories is the need to replace the anti-static filter bag. In the past due to the small variety of filter media, poor quality, not too much clearance bag technology, and other reasons for the dust removal system, the replacement cycle is relatively short, increasing operating costs and Maintenance workload, inconvenience to users. Nowadays, the variety of filter media in China has increased, the quality has been improved, and the technology of sewing bags has also been greatly improved. The life of anti-static filter bags has been increased to more than two years, and even longer, meeting the requirements of users. Therefore, bag filter will develop rapidly in the next ten years.
China’s bag filter was mainly used in the Soviet Union in the 1950s. In the 1960s and 1970s, a few design and research institutes were mimicking the pulsed, mechanically reciprocally blown flat bags of the United States, Japan, and other countries. The dust collector is based on the production of its own products. The current environmental standards require that the emission concentration must be below tens of milligrams per standard cubic meter. In terms of dust collection performance, only bag filter and electrostatic precipitator are generally sufficient. The electrostatic precipitator has low pressure loss during operation, and is used more often in the collection of excessive air volume in the power, steel, cement, and pulp industries. However, it has been replaced by bag filter in other uses of large air volume.