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How To Choose A Dust Collector

Oct. 17, 2019

The performance of the dust collector is expressed by the amount of gas that can be treated, the resistance loss when the gas passes through the dust collector, and the efficiency of dust removal. At the same time, the price, operating and maintenance costs of the dust collector, the length of service life and the difficulty of operation management are also important factors in considering its performance. So how do you choose a suitable type of dust collector? Our PPC Bag Type Dust Collector Supplier will come to tell you.


First we need to know the classification of the dust collector. According to the function and principle, the dust collector can be divided into the following types:


1.Dry type mechanical dust collector mainly refers to dust removal equipment designed by applying dust inertia and gravity, such as sedimentation chamber, inert dust collector, cyclone dust collector, etc., mainly for high concentration coarse particle diameter dust. Used for separation or concentration.

2.Bag Type Dust Collector, which is a dust removal device with fiber woven or filled layer as filter medium. Its application, form, dust removal air volume scale and action efficiency have a wide range, mainly used for capture. A place where fine dust is applied to an exhaust dust removal system.

3.The wet dust collector relies on hydraulic force to separate and collect the dust particles of the dust removal device, such as spray tower, scrubber, impact dust collector, venturi, etc., in the process of processing high concentration, large air volume More dusty gas is used. For coarser, hydrophilic dusts, the separation efficiency is higher than that of dry mechanical dust collectors.


Bag Type Dust Collector


Bag Type Dust Collector


4.Granular layer dust collector The equipment for filtering the dust contained in the gas-soluble solution by using the granular material accumulation layer with different particle sizes as the filter material. It is mainly used in dust extraction points in the production process of building materials, metallurgy, etc., often with dusty flue gas with high filtration concentration, coarse particles and high temperature.

5.the electrostatic dust collector, that is, Electrostatic Precipitator, the dust collector is to introduce the dusty airflow into the electrostatic field, under the action of the high voltage electric field, the gas is ionized, generating electrons and positive ions, they move to the positive and negative poles respectively, when the dust The particles are negatively charged as they flow through the working electric field, are removed at a certain rate to the settling plates opposite to their negative charge signs, and settle there, thereby being separated from the open gas stream and collected in the electrostatic dust collector. The dust remover has high dust removal efficiency, low resistance, and convenient maintenance and management. It has the same effect as bag-type dust collectors in capturing fine dust particles.

After clearing the classification of the dust collector, we can choose the dust collector as needed.

1. According to the requirements of dust removal efficiency

The selected dust collector must meet the emission standards.

Different dust collectors have different dust removal efficiencies. For dedusting systems with unstable or fluctuating operating conditions, attention should be paid to the effect of changes in flue gas treatment on dust removal efficiency.

2. According to the nature of the gas

When selecting a dust collector, factors such as air volume, temperature, composition, and humidity must be considered. Electrostatic dust collector is suitable for flue gas purification with high air volume and temperature <400°C; bag filter is suitable for flue gas purification with temperature <260°C, it is not suitable for high humidity and oily flue gas purification; flammable and explosive gas Purification (such as gas) is suitable for wet scrubbers.

3. According to the nature of dust

Dust properties include specific resistance, particle size, true density, scorch, water and hydraulic, flammable, explosive, and the like. The electrostatic dust collector should not be used for dust with excessive or excessive resistance. The bag filter is not affected by the dust specific resistance. The concentration and particle size of the dust have a significant effect on the efficiency of the electrostatic dust collector, but the effect on the bag filter. Not obvious; when the dust concentration of the gas is high, the pre-dusting device should be installed before the electrostatic dust collector; the type of the bag filter, the cleaning method and the filtering wind speed depend on the nature of the dust (particle size, scorch); 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 in the working face of dust collectors. Or blockage, therefore, it is not advisable to use dry dust removal; when the dust is cleaned and it can produce a flammable or explosive mixture, the wet dust collector should not be used.

4. According to pressure loss and energy consumption

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

See here that I believe you have already understood how to choose the dust collector according to your needs. If you are interested in the dust collector, you can contact us and we will provide you with high quality service.

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