How to Determine the Filtration Velocity of a Cartridge Dust Collector?

The filtration velocity of a cartridge dust collector is a key parameter in its design, directly affecting dust removal efficiency and equipment operating costs. 

The following are the main steps and considerations for determining the filtration velocity:

1. Understand the Definition of Filtration Velocity

Filtration velocity refers to the average speed of gas passing through the filter media, usually expressed in m/min.

2. Consider Dust Characteristics

Dust Particle Size: The smaller the particle size, the lower the filtration velocity should be.

Dust Concentration: At high concentrations, reduce the velocity to decrease the load on the filter cartridge.

Dust Stickiness: Highly sticky dust requires a lower velocity to prevent clogging.

3. Select Filter Media

Different filter media have different permissible velocities; the appropriate velocity must be selected based on the air permeability and temperature resistance of the filter media.

4. Refer to Industry Standards

Common Filtration Velocity Ranges:

General Industrial Dust: 0.8-1.2 m/min

Fine Dust: 0.6-0.8 m/min

Sticky Dust: 0.5-0.7 m/min

5. Calculate Filtration Area

Calculate the filtration area based on the processing air volume and filtration velocity:

Filtration Area = Processing Air Volume / Filtration Velocity

6. Consider Equipment Operating Conditions

Temperature: High temperatures require lowering the velocity.

Humidity: High humidity requires lowering the velocity to prevent condensation.

7. Conduct Tests and Adjustments

After initially determining the velocity, verify it through testing and adjust it according to actual operating conditions.

8. Consider Economic Efficiency

While meeting dust removal efficiency requirements, select an economically reasonable velocity to balance equipment investment and operating costs.

Summary

Determining the filtration velocity requires comprehensive consideration of dust characteristics, filter media, industry standards, operating conditions, and economic efficiency. 

Calculations and testing are necessary to ensure the dust collector operates efficiently and stably.