The material of the dust collector bag is a fabric or felt woven from synthetic fibers, natural fibers, or glass fibers. Sew the cloth or felt into cylindrical or flat filter bags as needed. Select filter media suitable for the application conditions based on the properties of the flue gas. Usually, when the flue gas temperature is below 120 ℃ and the filter material is required to have acid resistance and durability, polyester velvet cloth is often used; When dealing with high-temperature flue gas (<250 ℃), graphitized glass fiber cloth is mainly used; In some special cases, carbon fiber filter media should be used It is quite important to control the speed of flue gas passing through the filter material (known as filtration speed) during the operation of the bag filter. According to the processing method, it is mainly divided into three types: woven filter dust bag, non-woven filter dust bag, and composite filter dust bag.
Main categories
1、 Room temperature cloth bag: Room temperature cloth bags are mainly made of fibers such as polyester, polypropylene, and acrylic through non-woven and textile processes. They have excellent properties such as good breathability, smooth surface, good dimensional stability, and easy detachment of dust. Mainly used for dust removal and room temperature flue gas treatment in industries with dust pollution in general industrial enterprises;
2、 Medium temperature cloth bag: With the increasing emphasis on environmental protection by the country, especially the rapid development of bag filter technology industry in recent years, China has begun to use imported synthetic fibers to develop high-performance filter materials that can adapt to harsh working conditions and have a long service life. At present, the commonly used medium temperature filter materials include aramid fiber and PPS series fiber, which are treated through immersion, waterproofing, oil resistance, and anti-corrosion processes to achieve ideal results;
3、 High temperature cloth bag: High temperature cloth bags are mainly made of heat-resistant fibers such as P84, expanded glass fiber, and ultrafine glass fiber, which are processed through textile and non-woven processes. They have the characteristics of good thermal stability, high filtration efficiency, and long service life. Mainly used for dust removal in various high-temperature flue gas conditions.
Main purpose
Used for solid-liquid separation and gas-solid separation; The application fields of gas-solid separation include flue gas treatment and dust removal systems in ironworks, steelmaking plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Flue gas filtration for waste incinerators, coal-fired boilers, fluidized bed boilers, etc. Asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites Aluminum electrolysis, filtration of smelting flue gas for lead, tin, zinc, copper and other rare metals, recovery of fine materials, and separation of liquid and solid. Liquid solid separation and fine material recovery in the fields of chemical engineering, coke, carbon black, dyes, pharmaceuticals, plastics, etc. Dust control and purification collection in mining, grain processing, flour, electronics industry, wood processing, etc Our factory * * * produces needle punched felt dust removal bags, medium alkali glass fiber filter bags, and three proof polyester needle punched felt dust removal bags.