Bag dust removal


2022-04-21 10:50

working principle:  

The dust-laden gas enters the ash hopper of each unit through the diversion pipe. Under the guidance of the ash hopper diversion system, the large particle dust is separated and directly enters the ash hopper. The rest of the dust enters the filter area of ​​the box with the airflow, and the filtered clean gas passes through the cloth bag. discharged through the upper box, poppet valve and exhaust pipe. As the filtration progresses, when the dust accumulation on the surface of the cloth bag reaches a certain amount, the ash cleaning control device closes the poppet valve according to the set procedure, opens the electromagnetic pulse valve to blow, shakes off the dust on the cloth bag, and falls into the ash hopper after discharge. Ash valve discharge. structure type:  

The structure of the bag filter is mainly composed of the upper box, the middle box, the lower box (ash hopper), the ash cleaning system and the ash discharge mechanism. 

According to the different cleaning methods, the dust removal bag is divided into pulse type dust removal bag, rapping type dust removal bag, and reverse blow type dust removal bag; Differently divided into round bag type, flat bag type, envelope type; according to the filtering method, it is divided into outer filter type and inner filter type.


The dust removal efficiency is high, generally above 99%, and has a high classification efficiency for fine dust with sub-micron particle size. 

Handles a wide range of air volumes. 

Simple structure, easy maintenance and operation. 

Under the premise of ensuring the same high dust removal efficiency, the cost is lower than that of the electrostatic precipitator. 

When using glass fiber, polytetrafluoroethylene, P84 and other high temperature resistant filter materials, it can operate under high temperature conditions above 200 ℃. 

It is not sensitive to the characteristics of dust and is not affected by dust and resistance. Scope of application:

Flue gas treatment and dust removal systems in iron plants, steel plants, ferroalloy plants, refractory plants, foundries, power plants, etc. Flue gas filtration of waste incinerators, coal-fired boilers, fluidized bed boilers, etc. 

Asphalt concrete mixing, building materials, cement ceramics, lime, gypsum and other production sites. 

Aluminum electrolysis, smelting flue gas filtration of lead, tin, zinc, copper and other rare metals, recovery of fine materials. 

Dust control and purification collection in mining, grain processing, flour, electronics industry, wood processing, etc.