Characteristics and Application of Bag Filter

There are many kinds of dust collector equipment, the working principle is also different, and different process requirements determine the choice of dust collector equipment.

First, the characteristics of bag filter
1. The dust removal efficiency is high, generally up to 99% or more, can be used in the purification requirements of high occasions.
2. Adaptability, can capture all kinds of nature of the dust, and not because the specific resistance of dust and other factors affect the efficiency of dust removal, adapt to a wide range of dust concentration, and when the inlet concentration or flue gas changes, it will not affect the efficiency of purification and running resistance.
3. Variety of specifications, the use of flexible. The amount of air handled can be from several hundred to several million cubic meters per hour.
4. Easy to recover the material, no pollution, waste water and other secondary pollution.
5. By the filter material temperature, corrosion resistance and other performance constraints, the usage of temperature cannot be too high, some corrosive gases cannot be used.
6. In the collection of strong sticky and strong moisture absorption or dew point to deal with a high flue gas, easy to plug the bag, affecting the normal work.
7. Bag filter with varying degrees of presence covers an area of large, easy to damage the bag, maintenance costs higher.

Second, the application of bag filter
With the development of bag type dust removal technology and the increasing demand for environmental protection, bag filter more widely used, Currently it has been able to use bag filter to deal with high temperature, high humidity, bonding, explosion, abrasive flue gas , and even filter the air containing ultra-fine dust.
1. High temperature and high humidity gas
All kinds of industrial kilns, dryers and other flue gas are high temperature flue gas, most of them also contains a lot of water and sulfur oxide gas. Bag filter is currently able to deal with the temperature below 300 ℃ flue gas, more than this temperature should be pre-cooling flue gas treatment, in special circumstances, the usage of metal fiber filter directly handle 450 ~ 550 ℃ high temperature flue gas.
2. Bonding dust
Bonding dust is easy to board in the bag surface, bag filter can be used to deal with the adsorption of adhesive dust, that is, in the system pipe into the appropriate amount of porous powder, the usage of powder to adsorb bonded dust, And then purified by a bag filter. Such as refractory plant with dolomite powder adsorption purification of asphalt flue gas, aluminum plant with alumina adsorption of asphalt and hydrogen peroxide, road asphalt concrete workshop with limestone powder adsorption asphalt smoke, the adsorption efficiency of up to 92 ~ 99%.

With the bag filter deals with steam boilers, cement kilns, metallurgical furnaces, incinerators and other high-temperature furnace flue gas, at home and abroad generally increase. Although the bag filter is limited by the temperature resistance of the filter, it is possible to treat high temperature flue gas with temperatures up to 1200 to 1400 ° C by proper treatment of the system flue gas.