Bag filter is widelyused in steel, non-ferrous metallurgy, chemical industry, machinery, buildingmaterials, electric power, light industry, textile, food, transportation andother industrial sectors.
The main structure ofthe bag filter is composed of upper box, central box, lower box, dust cleaningsystem and rotary discharger. The following are the 4 major advantages of bagfilter.
1. The dust removalefficiency is very high. Generally, it can reach 99.5%. Changes in workingconditions such as air volume, gas dust content, and temperature have littleeffect on the dust removal effect of the bag filter.
2. It’s easy to handledust. The bag filter is a dry purification equipment that does not requirewater, so there is no problem of sewage treatment or mud treatment, and thecollected dust is easy to recycle.
3. Flexible to use. Thehandling air volume can range from hundreds of cubic meters per hour tohundreds of thousands of cubic meters per hour. It can be used as a small unitdirectly installed indoors or nearby, or it can be made into a large dustremoval room.
4. Stable performance.The structure is relatively simple, the operation is relatively stable, theinitial investment is small, and the maintenance is convenient.
Of course, with theimprovement of waste gas treatment technology and the standardization ofnational policies, various waste gas treatment methods are implemented tocomprehensively control dust and smoke problems, and the combined use of bagfilter, spray tower, and activated carbon treatment device has a better effect.
Cooling:The ability of bag dust removal to withstand temperature has a certain limit.The temperature resistance of cotton and wool filter materials is 80-95degrees, the temperature resistance of synthetic fiber filter materials is200-260 degrees, and the temperature resistance of glass fiber filter materialsis 280 degrees. When purifying flue gas with higher temperature, take coolingmeasures to reduce the temperature of flue gas.
Heat preservation:Sometimes the flue gas contains a lot of water, or the dust carried by it hasstrong hygroscopicity, which often causes the filter bag to stick and block thefilter material. At this time, the necessary heat preservation measures canensure that the water in the gas will not condense.
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