Flue gas purifying method and apparatus for bag type dust remover

Abstract

The present invention relates to a flue gas cleaning method using bag-type dust collector and its equipment. Said invented method includes the following steps: (1) using air fluidization device in every ash chamber positioned in the lower side of flue gas inlet to make the fly ash particles in the ash chamber, i.e. adsorption agent into the fluidization state; (2). feeding the flue gas into dust collector through flue gas inlet and carrying the fly as to filtering layer; (3) making the fly ash particles and oil mist produce collision, adsorption and agglomeration, at the same time adsorbing harmful gas component; (4). filtering dust and falling the separated flyash into ash chamber, using it as adsorbent to reuse; and (5). making cleaned flue gas pass through flue gas outlet and come intodischarge system.

Description

technical field [0001] The invention relates to a method for purifying flue gas of a bag type dust collector and a device for realizing the method, belonging to the technical field of flue gas purification and dust removal. Background technique [0002] The dust contained in the flue gas emitted during industrial production has different characteristics. The flue gas emitted by the oil-fired boiler contains oil mist, and the flue gas is adhesive; the flue gas emitted by the coking oven contains coal dust and tar, which also belongs to Viscous fumes. Adhesive flue gas will cause the filter bag of the bag filter to form a "paste bag" during the dust removal process, and form a dust cake on the surface of the film, which is difficult to remove and reduces the dust removal efficiency. The utility model patent with the application number of 95230433.3 mainly adopts a purification device that adds adsorbent to the flue gas before the dust collector to achieve the purpose of purif...

AI Technical Summary

Problems solved by technology

Adhesive flue gas will cause the filter bag of the bag filter to form a "paste bag" during the dust removal process, forming a dust cake on the surface of the film, which is difficult to remove and reduces the dust removal efficiency

The utility model patent with the application number of 95230433.3 mainly adopts a purification device that adds adsorbent to the flue gas before the dust collector to achieve the purpose of purifying the adhesive flue gas, but the device needs to be equipped with independent adsorbent storage, adsorbent Transportation system, equipment investment is large, and the utilization rate of adsorbent is low, and the operating cost is high

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