Bag filter is a kind of equipment that uses bag type filtration components made of fibers to capture solid particulates in gas. Bag filter mainly adopts four kinds of cleaning methods, that is, mechanical shaking, reverse-air cleaning, pulse-jet cleaning and compound cleaning.
The Structure of Bag Filter: Bag filter is made up of support, hopper, middle box, upper box, filtering bags, frame, pulse-jet cleaning devices and PLC control procedures. In -the -box is the sub-room structure, while working the gas spread out by the dust collecting duct in all ash bucket. Coarse particles directly fall into the ash bucket bottom for wind speed reducing and the ash bucket spoiler role in the collision, fine dust rose with the bag at all between the fine dust was blocked leaving the outer surface of the bag, cleaning gas clearance role with negative pressure ventilation through the bag into the mains from the body into the atmosphere, reaching the purpose of purification.
Features of Bag Filter:
(1) Bag filter has high dust cleaning efficiency which generally can reach more than 99%. It also has quite high dust cleaning efficiency for fine dust.
(2) Bag filter has strong adaptability, able to capture dust of different properties.
(3) Bag filter can work flexibly, dealing with air volume from hundreds of cubic meters to hundreds of thousands of cubic meters per hour.
(4) Bag filter has simple structure. Simple bag filter or pulse cleaning bag filter of higher efficiency can be adopted in accordance with specific situations.
(5) Bag filter works stably, easy to recycle dry materials. It has no sludge treatment, corrosion or other issues, and the maintenance is simple.
(6) Bag filter’s application is limited by filtering material’s heat resistance and corrosion resistance; Polyester filtering material is suitable for 120 ~ 130℃ and the glass fiber filtering material is resistant to about 250℃.
(7) Bag filter is not suitable for dust with strong bonding and hygroscopicity, especially when dusty gas’s temperature is lower than the dew point, condensation will arise and lead to the blockage of the filter bag.
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