Selection basis of dust collector

Selection basis of dust collector
According to the nature of the dust

Dust properties include specific resistance, particle size, true density, scoopability, hydrophobicity and hydraulicity, flammability, explosion, etc. Dust with too large or too small specific resistance should not be used for electrostatic precipitator, bag filter is not affected by dust specific resistance; the effect of dust concentration and particle size on the efficiency of electrostatic precipitator is more significant, but the impact on bag filter Not noticeable; when the dust concentration of the gas is high, a pre-dust removal device should be installed in front of the electrostatic precipitator; the type of bag filter, dust cleaning method and filtering wind speed depend on the nature of the dust (particle size, degree); wet type Dust collectors are not suitable for purifying hydrophobic and hydraulic dust: the true density of dust has a significant impact on gravity dust collectors, inertial dust collectors and cyclone dust collectors; for newly attached dust, it is easy to cause cats on the working surface of the dust collector Therefore, it is not suitable to use dry dust removal; when dust purification meets water, it can produce flammable or explosive mixture, and wet dust collector should not be used.

According to pressure loss and energy consumption

The resistance of the bag filter is larger than that of the electrostatic precipitator, but compared with the overall energy consumption of the dust collector, the energy consumption of the two is not much different.

According to equipment investment and operating costs

Requirements for water saving and antifreeze
Areas lacking in water resources are not suitable for using wet dust collectors; there is a problem of freezing in winter in northern regions, so wet dust collectors should not be used as much as possible.
Dust and gas recycling requirements
When the dust has a recovery value, dry dust removal should be used; when the dust has a high recovery value, a bag filter should be used; when the purified gas needs to be recycled or the purified air needs to be recycled, it should be used Efficient bag filter.