An analysis of the selection of dust bag considerations

How to choose a dust bag, a good choice can help dust collectors to achieve the ultimate dust removal effect, but if you do not choose well, not only is the dust removal effect is not good, and the use of dust bags is not long enough to need to replace again, not only time-consuming and costly.

So how do you choose a dust filter bag?

To choose a suitable dust bag, you must first be fully familiar with your own working conditions, such as the size of dust particles, filtration air speed, gas temperature, dust concentration, dust cleaning methods, humidity, chemical properties, etc.; secondly, you must also have a full understanding of the characteristics of dust bags, such as the types of bags commonly used: PPS dust bags; P84 dust bags; PTFE dust bags; polyester dust bag; acrylic laminated dust bag; fluorine Guangs dust bag; NOMEX Metas; dust denitrification integration filter bag and other types.

1, when choosing a filter material, one must look at the use, in addition to conventional concentration, dust fineness, smoke temperature, humidity, the intensity of emissions, and other factors, but also consider the chemical stability of acid resistance, alkali resistance, hydrolysis, etc.

2, filter material selection, in addition to technical performance, should also make a comprehensive evaluation of its economic performance, in the case of meeting the use of requirements, and then consider the price of filter media; the price of filter media, to consider the initial investment and the economy of operation. However, under the same conditions of use, the operating resistance can be halved, saving the power consumption required for operation.

3, The current production of a variety of filtration materials on the market distribution manufacturers, the fish eyes mixed with pearls from time to time; some bag filter improper use, low efficiency, short life, which has a lot to do with it. Therefore, when choosing a certain filter material, it is necessary to understand whether the manufacturer's production process is complete, whether the technical source is reliable, whether the quality of the product and the inspection means are guaranteed, and whether the sewing process is reasonable. In a word, to choose authentic, reliable quality products.

4, Filter airspeed is a very important parameter in determining the performance of the dust collector, and its size is taken directly related to the life of the filter.

5, When high temperature and high humidity exist at the same time it will affect the temperature resistance of the filter media. This is especially true for materials with poor hydrolytic stability such as spandex, polyester, and amide, which should be avoided as far as possible.

6, The inlet temperature of the dust-containing gas of the dust collector should be higher than the dew point temperature of the gas by more than 30℃ to avoid gluing the bags.

7, Wet gas makes the dust bag surface wetting and bonding. Especially for the absorbent, damp, and wet dust ash caused by the paste bag, for this reason, should be used with cotton spandex and glass fiber and another smooth surface, long fibers, easy to clear ash filter media. And it is advisable to use silicone oil, and fluorocarbon resin for impregnation of dust filter media, or use acrylic, PTFE, and other substances on the surface of the filter media for coating treatment. The plastic burner and laminated materials have excellent resistance to moisture and easy ash removal, but for high moisture gases, the preferred choice should be water and oil repellent filter media.

8, For wet gas in the dust bag design, a should be used round bag. Try not to use the shape of a complex, very compact layout of flat bags and rhombus-shaped bags (except plastic burner plate).

So the choice of dust bag must be based on their own working conditions in accordance with the dust bag manufacturer's custom-made dust bag in line with their own working conditions, so that the dust bag can not only achieve good dust removal effect but also in the case of daily good maintenance, dust bag use time will be longer.