Working principle of blast furnace gas dry bag dust collector

The blast furnace gas dry pulse bag dust collector is a new type of bag dust collector professionally produced by our company using advanced production technology. During operation, the raw gas from the raw gas main pipe enters the lower box of the bag dust collector through the branch pipe. body, after mechanical separation, the gas is filtered upward through the filter bag, and fine dust adheres to the outer surface of the filter bag. The clean gas is collected into the upper box through the bag filter bag, passes through the gas branch pipe, and enters the hot blast furnace for use. After filtration for a certain period of time, as the dust on the surface of the filter bag increases, the resistance of the dust collector rises. When the resistance rises to a certain value, the electrical control system sends a dust cleaning signal, the outlet branch pipe pneumatic valve and the upper ball valve automatically close, and the pulse valve opens. , the nitrogen from the sub-cylinder is sprayed from the bag mouth through the injection pipe, the filter bag expands rapidly, the dust on the outer surface of the filter bag is shaken off, and falls into the lower conical ash hopper. The last pulse valve injection ends, and the dust collector continues to remain stationary. state, causing the finer dust in the filter cartridge to have a static settling process. When this process ends, the pneumatic butterfly valve and the upper ball valve of the outlet branch are opened, and the dust collector enters the normal filtration state. At the same time, the lower ball valve is opened and passes through the impeller feeder, completing a The dust cleaning process of the box, the opening and closing of each valve in the above process, and the test of the relative dust concentration of a single box are all controlled by the system. Through this repeated work, the raw gas is purified. Working Principle of this Bag Type Dust Collector
The waste gas from the waste gas main pipe enters the lower box of the bag dust collector through the branch pipe. After mechanical separation, the gas passes upward through the bag filter, and the fine dust adheres to the surface of the filter bag. , the clean gas is collected into the upper box through the filter bag, passes through the clean gas branch pipe, and enters the hot blast furnace for use in the main pipe. After filtration for a certain period of time, as the dust on the surface of the filter bag increases, the resistance of the dust collector rises. When the resistance rises to a certain value, the electrical control system sends a dust cleaning signal, and the pneumatic butterfly valve and upper ball valve of the outlet branch automatically close, pulse The valve opens, and the nitrogen from the sub-cylinder is sprayed from the bag mouth through the injection pipe. The filter bag expands rapidly. The dust on the outer surface of the filter bag is shaken off and falls into the lower conical ash hopper. The last pulse valve injection ends and the dust collector continues. Maintain a static state so that the finer dust in the cylinder has a static settling process. After this process is completed, the pneumatic butterfly valve and the upper ball valve of the outlet branch are opened. The dust collector enters the normal filtration state and at the same time the lower ball valve is opened and passes through the impeller feeder, completing a The cleaning process of the box.
Technical features of the dust collector
The filtration speed is higher than that of large bag dust removal, so the number of boxes is reduced, and it occupies less space
The filter bag has a long life, which better solves the problem of frequent damage to the filter cloth Problems
The equipment is simple, the degree of automation is high, and the backflushing effect is better
Fully enclosed backflushing, without any gas emissions, eliminates air pollution
Low investment, less than the large bag dust collector system ~.