Normal temperature dust bag: mainly made of polypropylene, polyester and other filter material by non-woven, textile technology, with good air permeability, smooth surface, good dimensional stability, dust is not easy to adhere and easy to peel and other excellent performance. It is mainly used in dust-removal and normal-temperature flue gas treatment in the normal temperature industry where there is generally dust pollution.
Medium temperature dust bag: It is mainly made of Acrylic filter short fiber and Acrylic base cloth acupuncture process. It is widely used in the medium temperature field and medium temperature fan dust bag. It is suitable for all kinds of dust pollution industry and bad temperature conditions and other fields.
High temperature dust bag: Mainly by P84, PPS, expanded glass fiber, ultra-fine glass fiber, PTFE and other high temperature resistant fiber processed by spinning and non-woven technology, with good thermal stability, high filtration efficiency, long service life and other characteristics . After coating, it also has excellent properties such as corrosion resistance, water repellency, oil resistance, and static resistance. Mainly used in various high-temperature flue gas conditions and dust removal under adverse conditions.
Different industries have different requirements for dust emission standards. According to the nature of dust and production characteristics of various industries, dust bags used in each industry are different.
Boiler and coal-fired power plant applications: Domestic boilers and coal-fired power plants originally used electrostatic precipitators to treat dust-laden flue gas, and found that electrostatic precipitators were often affected by operating conditions and resulted in unstable dust removal. Electric bag-type dust collectors or point bag compound dust collectors are now widely implemented. Due to the large dust content and complex composition of the dust, the temperature of the flue gas is very high, and the temperature of the bag is required to be 180°C to 200°C. Therefore, the high temperature dust bag is generally selected for corrosion resistance, electrical resistance, and oxidation resistance. The application is more PPS dust bag.
Application in iron and steel production: The iron and steel industry has a large concentration of smoke and dust, and it has sticky and fine characteristics. Different operating conditions for different furnace conditions are different, and some working conditions can be as low as 150°C～200°C. Some working conditions require the bag to be able to withstand temperatures above 300°C. The requirements for the performance of the bag are lower, depending on the working temperature, depending on the operating temperature, the use of a medium temperature dust bag or a high temperature dust bag. NOMEX, glass fiber/P84 composite needled felt, pure glass fiber filter material and so on are used for more dust bags.
The application of cement building materials industry: There are many links in the production of cement plants, but no matter which part of the dust gas temperature is very high, and contains a lot of sulfur dioxide, nitrogen oxides, carbon dioxide, hydrofluoric acid and other easy Corrosion material of the bag. General use of corrosion-resistant, acid-resistant, high temperature dust bag. The most widely used fiberglass film dust bag.
Non-ferrous metal industry applications: The non-ferrous metal industry produces a large number of pollutants in the production. These pollutants contain corrosive components, and the metal particles have a certain degree of abrasiveness, so generally choose the dust bag that can wear and corrosion resistance , such as PTFE, FMS, etc., if necessary, the filter material is coated or acid-base treatment