The difference between dry dust collecting system and wet dust collecting system

The difference between dry dust collecting system and wet dust collecting system

The difference between dry dust collecting system and wet dust collecting system

Dry dust collecting system

The dry dust removal technology has high dust collection efficiency, and in addition, it has the advantages of convenient management, less land occupation and anti-corrosion features.

The dry dust collector does not require water as a dust removal medium.

The scope of application is very wide, most dust collecting systems are dry dust removal, such as electrostatic dust collector, baghouse dust collector, cyclone dust collectors, etc.

Only a small number of dust removal objects are not suitable for dry dust collector, especially for large centralized dust collecting systems.

The state of the discharged dust is a dry powder, which is advantageous for centralized treatment and comprehensive utilization.

However, the dry dust removal technology cannot remove the toxic components in the dusty gas, and it is easy to cause secondary flying dust if not handled properly.

In addition, the high relative humidity of the gas, the unreasonable selection of the filter medium and the filtration wind speed parameters, etc. may also cause a bag sticking phenomenon.

For dry dust removal, the control of the airflow temperature is very important.

If the airflow temperature is too high, it will cause problems such as bag sticking, pipe blocking, and additional burning loss of the equipment, which will affect the dust removal efficiency of the dry dust removal technology.

If the temperature of the airflow is too low, the generated dust will be hardened, which causes blockage of the EC coarse dust conveying system and the EP fine dust conveying system, and the moist dust is easily hung on the cathode line and the anode plate, it is not easy to fall off, resulting in the enlargement of the cathode line and the reduction of the pole pitch, increasement in the discharge frequency of the electric field, which easily causes the venting of dust explosion, and affects the dust removal efficiency of the dust collector, and more seriously the equipment corrosion is intensified and the equipment service life is shortened;

In addition, the air temperature is too low, which will cause water accumulation in the fan and increase the corrosion speed of the fan impeller.

Wet dust collecting system

Wet dust collecting system

The wet dust collector uses water as a filter medium to fully contact the dust-containing gas, and the dust particles are washed to purify the gas.

The dust collector has a simple structure, low investment at the beginning, high purification efficiency, and can remove dusty gases in other harmful components while removing dust, and reducing the temperature of the gas; it can handle high relative humidity, high temperature, flammable and explosive dust gas.

There is a three-stage dewatering device inside the dust collector, the gas and water are separated thoroughly, and the fan does not have water.

Dust collecting and desulfurization at the same time, no fouling and blocking problems, washing water recycling, and low operating costs.

Therefore, it is widely used in air pollution control and gas purification in various sectors of industrial production.

The disadvantage is that the water consumption is large, and the discharged dusty sewage must be provided with a sewage treatment facility for secondary treatment; the overall energy consumption is high. Mud treatment is difficult, it is easy to cause secondary pollution and because the washing water is acidic, the equipment is corroded greatly.

Therefore, the equipment should choose corrosion-resistant material; the mud is easy to stick to the fan blades, affecting the dynamic balance of the induced draft fan; the operation management is cumbersome and complicated. The sedimentation tank should be cleaned regularly.

Brightstar Aluminum Machinery offers an aluminum melting workshop baghouse dust collector, not only environmental protection equipment but also a pollution control solution.

It is time to make some changes and check the baghouse dust collector design for your aluminum melting workshop project. 

We focus on aluminum melting industry pollution control for more than 8 years and we only work for the aluminum industry. 

Contact us now for your aluminum melting pollution control to get normal production, and regain clear water and green mountains.