Analysis of Common Problems with Filter Bags
How to Test the Quality of Dust Collector Bags? During the operation of bag dust collectors, the dust collector bags used will more or less suffer from bag breakage, causing some dust particles in the dust-laden exhaust gas being filtered to overflow.
1. How to Judge the Quality of Dust Collector Bags
Of course, it is easy to detect with bag breakage detection instruments. However, Comfil Tech suggests that you choose high-quality dust collector bags before the bag dust collector is put into operation and do a good job in bag maintenance. How to correctly select dust collector bags and how to maintain them properly are crucial to extending the service life of dust collector bags.
Regardless of the model of the bag dust collector used, let's talk about the precautions for selecting dust collector bags to pick out high-quality ones. So what aspects should we check when choosing filter bags? We need to start with the selection of bag filter media.
The so-called selection of filter media means checking whether its performance meets the requirements of dust reduction and emission, whether it can support long-term dust removal, whether it can adapt to high-temperature gases in industrial gas filtration, and how effective it is in collecting flammable and explosive dust particles. In general, the specifications are selected according to working condition requirements.
In fact, the methods for judging specifications and materials are mostly the same. There are many types of dust collector filter bags. You need to determine the type of dust collector bag first, and then calculate the required model of the dust collector filter bag according to the customer's working conditions.
2. What are the General Categories of Dust Collector Filter Bags
They are divided into three major categories: high-temperature resistant dust collector bags, medium-temperature dust collector bags, and normal-temperature dust collector bags. Each major category of these dust collector bags includes many subcategories.
3. What Materials are Used for the Bags
Dust collector bags are made of fabrics or felts woven from synthetic fibers, natural fibers, or glass fibers. The fabrics or felts are sewn into cylindrical or flat filter bags as needed. The filter media suitable for the application conditions are selected according to the properties of the flue gas. Usually, when the flue gas temperature is lower than 120℃ and the filter media are required to be acid-resistant and durable, polyester velvet fabric and polyester needle-punched felt are often selected; when treating high-temperature flue gas (<250℃), graphitized="" glass="" fiber="" fabric="" is="" mainly="" used="">
4. How to Judge the Quality of Dust Collector Bags
Dust collector bags are made of woven filter cloth and non-woven felt, and filter dust-laden gas by utilizing the filtering effect of fiber fabrics. In which industries are dust collector bags generally used? Filter bags are generally used in flue gas treatment and dust removal systems of ironmaking plants, steelmaking plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Flue gas filtration of waste incinerators, coal-fired boilers, fluidized bed boilers, etc. Asphalt concrete mixing, and production sites such as building materials, cement ceramics, lime, and gypsum. Flue gas filtration, fine material recovery, and liquid-solid separation in aluminum electrolysis and smelting of lead, tin, zinc, copper, and other rare metals. Liquid-solid separation and fine material recovery in chemical, coke, carbon black, dye, pharmaceutical, plastic, and other fields. Dust control and purification collection in mining, food processing, flour, electronics, wood processing, and other industries.
(Source: Tencent News)
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