Dry dust removal filter bag for coke oven

Abstract

The invention discloses a dry dust removal filter bag for a coke oven. The dry dust removal filter bag, which comprises an outer bag body, an inner bag body and a skeleton, wherein a secondary air flow path is annularly arranged between the outer bag body and the inner bag body, and an air outlet connected with the secondary air flow path is formed in the upper end of the outer bag body; a barrel is arranged between the bottom of the inner bag body and the bottom of the outer bag body, and the open end of the barrel is communicated with the inside of the inner bag body; pores communicated with the secondary air flow path are formed in the two side walls of the barrel, and a sliding block is arranged in the barrel in a sliding way; a spring is arranged at the bottom of the sliding block. The acting stress generated by secondary expansion of the outer bag body is much larger than the acting stress generated by primary expansion thereof, i.e., dust attached to the outer bag body is completely ejected; compared with a dust removal cloth bag with a single-layer structure, the dust removal efficiency is greatly improved, and the expansion of the outer bag body is driven by the expansion of the inner bag body, so that the direct sweeping of air flow on the outer bag body is reduced, and thus the loss of the outer bag body is reduced.

Description

technical field [0001] The invention relates to the field of bag dust removal, in particular to a dry-type dust removal filter bag for coke ovens. Background technique [0002] Coking is a multi-source pollution industry, and smoke and dust are the main pollutant fugitives in the coking production process. Modern chamber coke ovens are generally equipped with vehicle-mounted or ground station coal charging and coke discharge dust removal systems, of which the ground station dust removal system is widely used. The ground station type coke discharge dust removal system mainly uses hydraulic coupling or frequency conversion control fans to collect most of the smoke dust on the coke side through the collection cover set on the coke stop car and purifies it through the coke discharge dust collector. [0003] The existing dust bag is a drum single-layer structure, which is easy to process. It is a form commonly used in the existing market, but because of its large size, the equi...

AI Technical Summary

Problems solved by technology

It is a form commonly used in the existing market, but because of its large size, the equipment manufacturing cost increases, the operating cost is too high, and the filtering effect of the single-layer structure is average, and the service life is short

Moreover, the cloth bag is easy to fold due to the long-term impact of the gas during the collection process, which affects the filtration area of ​​the filter cloth bag, and then affects the filtering effect of the filter cloth bag.

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