Biomass ash bag deduster

Abstract

The invention discloses a biomass ash bag deduster, which contains an upper box, a central box and a lower box. An air inlet channel, which communicates with a dust-laden gas inlet, is arranged inside the central box. A plurality of bag cages which communicate with the air inlet channel are disposed in a spaced manner over the air inlet channel inside the central box. A filter bag is disposed inside each bag cage, which respectively communicates with a purified gas outlet through an outlet valve and communicates with a pulse valve disposed inside the upper box through a jet pipe. A dust hopper for ash discharge is arranged inside the lower box. Pulse-jet dust-cleaning is alternately carried out on an off-line compartment. The whole deduster is divided into a plurality of chambers (bag cages), which are connected with duct outlets through valves. When cleaning dust, the valve of one chamber is closed such that the chamber is off-line. Compress air is injected into the filter bag through a jet pipe by the pulse valve so as to finish dust removal by blowing. After the dust removal, the valve of the chamber is opened. Similarly, the chambers of the whole deduster undergo dust removal one by one. Therefore, the problem that it is difficult to remove dust during the biomass boiler operation is solved.

Description

Technical field [0001] The invention relates to a dust removal device, in particular to a biomass ash bag type dust collector for a biomass-fired boiler. Background technique [0002] Due to the increasing pressure of urban environmental protection, the requirements for boiler smoke and dust emissions are also very strict. At present, the boiler mainly uses biomass dust bag dust collector as the dust removal device. Biomass ash bag dust collector is a dry dust filter device. After the filter material has been used for a period of time, due to the effects of sieving, collision, retention, diffusion, static electricity, etc., a layer of dust accumulates on the surface of the filter bag. This layer of dust is called the primary layer. In the subsequent movement process, the primary layer becomes The main filter layer of the filter material depends on the function of the primary layer, and the filter material with larger mesh can also obtain higher filtration efficiency. As dust ac...

AI Technical Summary

Problems solved by technology

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a biomass dust bag dust collector, which can solve the problem of poor dust removal effect in the existing dust collector without changing the filter bag

Images