Application of Bag Filter

Date:2020-06-11 Source:zk corp Views:

With the development of bag filter technology and the increasing requirements of environmental protection, the application range of bag filter is becoming more and more extensive. At present, bag filter can be used to deal with high temperature, high humidity, adhesion, explosion, abrasive smoke gas, and even filtering air containing ultra-fine dust.

Working Principle of the Bag Filter:

The dust-containing gas enters the filter chamber from the open flange, and the coarse particles fall directly into the ash bin. The dust-containing gas is filtered by the filter bag, the dust is retained on the bag surface, and the clean gas passes through the bag mouth to the clean room, it is discharged into the atmosphere by the fan. When the dust on the surface of the filter bag continues to increase, the program controller starts to work, and the pulse valves are opened one by one to make the compressed air blow through the nozzle to clean the filter bag, which causes the filter bag to expand suddenly. The dust quickly leaves the filter bag and falls into the ash bin, and the dust is discharged by the ash discharge valve.

Advantages of Bag Filter:

1. High dust removal efficiency, generally more than 99%, can be used in occasions with high purification requirements;

2. Strong adaptability, can collect various types of dust, and does not affect the dust removal efficiency due to the nature of the dust, the range of adapted smoke concentration is wide, and when the inlet concentration or flue gas volume changes, it will not affect the purification efficiency ;

3. Various specifications and flexible use. The treatment air volume can be from several cubic meters to several million cubic meters per hour;

4. It is easy to recycle materials, and there is no secondary pollution such as pollution and waste water.

Important Notes when Using the Bag Filter:

It is necessary to prevent the gas from cooling below the dew point in the bag room during use, especially when using the bag dust collector under negative pressure. Because the outer shell often leaks air, the bag temperature is lower than the dew point, the filter bag will be damp, so that the dust is not loose, but sticky to the filter bag, blocking the fabric eyelet, causing cleaning The ash failure causes the pressure drop of the dust collector to be too large to continue operation, and some of the paste bags cannot be removed, and may even be dangerous.

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