Spark fire resistant device for bag-type dust removers in biomass boilers

Abstract

The invention discloses a spark fire resistant device for bag-type dust removers in biomass boilers. The device includes a flue gas inlet, flue gas cooling plates, baffling fire resistant plates, a middle partition plate and a first metal microporous mesh plate; the metal microporous mesh plates are provided with sonic soot blowers; two ash buckets are arranged at the bottoms of the left and rightcase bodies, and are provided with pneumatic arch breakers; a second microporous filtering mesh plate is connected to a flue gas outlet; the left and right case bodies are provided with access doors;and the whole device is supported by a support. Flue gas can be cooled by the cooling plates, and hit by the baffling fire resistant plates to make large particle sparks smaller or even quench afterimpact. The whole boiling zone is filled with boiling fluidized state ash, so that most tiny particles having sparks can be wrapped and quenched; and part of tiny particles having sparks which are notbeing eliminated can be blocked by the first metal microporous filtering mesh plate and the second microporous filtering mesh plate, and therefore, sparks can be completely stopped to enter bag-typedust removers.

Description

technical field [0001] The invention relates to a spark arresting device for a bag filter, in particular to a spark arresting device for a bag filter for a biomass boiler, which belongs to the field of flue gas dust removal. Background technique [0002] At present, bag type dust collector is the most commonly used dust removal device used in foundry, metallurgical furnace body, biomass boiler and other factories. Due to the high temperature of the dust and flue gas and sparks, it is easy to burn out the bag after directly entering the bag filter, and replacing the bag is not only labor-intensive and time-consuming, but also high maintenance cost and difficult to operate. The sparks in the flue gas can even cause the dust collector to catch fire, and in severe cases, the property of the factory will be damaged, and even personnel will be injured. [0003] Some construction personnel have also developed a bag filter spark capture device to eliminate dust and sparks in the fl...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a spark arresting device for bag dust collectors to overcome the disadvantages that the existing flue gas dust removal and spark arresting device has poor spark capture effect in actual operation and cannot completely prevent tiny particles of sparks from entering the bag filter.

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