Straight-through choke type cloth bag dust remover

Abstract

The invention relates to a straight-through baffle type baghouse filter. A pair of L-shaped erosion-resistant plates are symmetrically arranged on both sides of a baghouse inlet of a shell cavity of the baghouse filter; short edges of the pair of the L-shaped erosion-resistant plates have porous plate structures and are arranged in a non-filter bag area on the baghouse inlet of the cavity along the airflow direction; long edges of the pair of the L-shaped erosion-resistant plates have combined structures of porous plates and solid plates and are arranged in front of filter bags on both sides of the baghouse inlet of the cavity in the direction perpendicular to the airflow direction; and two porous baffle plates are also arranged in the non-filter bag area in the middle of baghouse of the shell cavity of the baghouse filter, wherein the distance between the first porous baffle plate and the baghouse inlet of the cavity is between 1 / 4 and 1 / 3 L; the distance between the second porous baffle plate and the baghouse inlet of the cavity is between 2 / 3 and 3 / 4 L; and L refers to the longitudinal length of the cavity baghouse. The straight-through baffle type baghouse filter can effectively reduce the structural resistance and the operation resistance, overcome the defect of nonuniform flow rate of the filter bags on front rows and rear rows of the cavity baghouse, prolong the servicelife, and reduce the maintenance cost, and is particularly suitable to be matched with semi-dry process desulfurization equipment with high flow rate, concentration and humidity for large coal-fired power plants.

Description

technical field [0001] The invention relates to bag dust removal equipment, in particular to a straight-through flow-blocking bag dust collector suitable for matching with semi-dry desulfurization equipment in large coal-fired power stations. Background technique [0002] With the continuous development of social economy and the continuous improvement of people's awareness of environmental protection, the application of dust removal equipment in production practice is becoming more and more extensive, especially the bag filter. The bag filter, also known as filter dust collector, uses a bag-shaped filter element made of fiber braid to capture solid particles in dusty gas. Compared with the electrostatic precipitator, the bag filter has high dust removal efficiency, stable outlet emission concentration, generally less than 50mg / Nm 3 , The emission concentration is not sensitive to the characteristics of dust, and is not affected by the specific resistance of dust. It is very...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a straight-through choke type that can effectively reduce structural resistance and running resistance, overcome the defect of uneven flow of filter bags in the front and rear of the inner cavity bag chamber of the general dust collector, increase its service life, and reduce its maintenance cost. Bag filter

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