Bag filter type dust collector for cement industry

Bag filter type dust collector depends on the ten factors, they directly affect the cleaning effect of the bag filter with life. Today we talk about what are the top ten factors?

(1) Filter bag selection: filter bag should be selected wear-resistant and high temperature materials, fiberglass cloth / felt, NOMEX, needle felt, P84 needle felt, etc., taking into account the filter bag wear resistance, high temperature and cost and other factors, the copper industry generally use NOMEX needle felt.
(2) Temperature control: general NOMEX filter bag can withstand the temperature of 200 ℃, so the treatment facility inlet temperature should be controlled below 200 ℃, through the long smoke after the smoke reach the dust box, the temperature can be reduced to 200 ℃ below, in special circumstances, can be water-cooled, in the total smoke pipe installed cooler.
(3) Fan selection: induced blower than the blower effect is better.
(4) Mechanical dust than artificial dust convenient, clean, but the high cost of mechanical dust, are mostly used pulse dust method.
(5) Leakage and resistance: theoretically calculate the bag dust collector dust removal efficiency can reach 99%, but the measured in actual can't attain, mainly is the influence of the leakage and pressure, leakage rate, the lower the air leakage rate, the better the dust removal effect; Influence, often clear the filter bag, reduce resistance, can improve the dust removal effect.
(6) Dust cover should be as close as possible to the burner, so that dust is more likely to enter the hood, increase the amount of dust to reduce the pollution of non-organized emissions.
(7) Equipment maintenance: equipment and bags easily damaged should be timely repair and replacement of bags.
(8) Air velocity: 1 ~ 3 m / s air velocity, dust removal is best, the general wind speed control in the 2 ~ 4 m / s.
(9) Filter area: the larger the filter area, the higher the efficiency of dust, but the cost will be increased accordingly. So we should be calculated in advance air volume, and then select the appropriate dust collector model.
(10) Secondary dust: in the dust collector box before the settlement room, the formation of secondary dust. The settling chamber removes a portion of the large particles of dust, reduces the temperature and reduces the dust collector pressure.