Maintain the high vacuum dust collector working efficiency mainly depends on the dust layer thickness on the dedusting bag and the dedusting bag.

Generally speaking, the filter material is dense, the dust layer is thick, and the efficiency is high; However, the corresponding gas processing capacity is reduced, that is, the filtering wind speed is low. How to improve the filtering wind speed while ensuring the stability of the rate and the pressure loss of the precipitator is a problem to be further studied. The improvement of filtering wind speed depends on the ash cleaning method and the performance of filter material.

The bag type dust remover and bag type dust chamber used in the early stage have no dust removal device, and the filtering wind speed is low, that is, the gas processing capacity is low. Later, the dust adsorbed on the filter bag was removed manually, and the filtering wind speed was increased; Then it develops into bag type dust remover (mechanical vibrating, reverse air flow and reverse gas system vibrating bag type dust remover) with regular and automatic vibration in separate rooms for intermittent dust removal, and the filtering wind speed is significantly increased. However, due to the method of cutting off the treated gas room by room and cleaning the filter bags in each room in turn, the dust remover did not fully play its role. In recent years, there has been an advanced bag type dust remover for ash cleaning, such as pulse bag type dust remover. This kind of dust remover continuously cleans the filter bag without cutting off the gas to be treated (the pressure loss of the dust remover and the amount of dust containing gas to be treated are almost unchanged during operation). Using compressed air (which consumes zui only. pieces are processed

0.13 ^ - 0.3%) r ash of dusty gas and filter bag are used, and the filtering wind speed reaches 5m/min. It has the advantages of large gas handling capacity, long filter bag life, high dust removal efficiency and small maintenance seam compared with mechanical vibrating bag dust remover.

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