Calculation Method of Dust Collector Filter Area (With Example)

When the air volume is known, the filter area of the dust collector can be accurately calculated using a simple formula, which is the basis for selecting equipment specifications. 

The specific method is as follows:

1. Calculation Formula
Filter Area (A) = Air Volume (Q) / (Filtration Wind Speed (v) × 60)
Parameter explanation:
- Air Volume (Q): The actual gas volume to be treated by the dust collector, unit: m³/h.
- Filtration Wind Speed (v): The set wind speed of the dust collector, unit: m/min (generally 0.8-1.5m/min, adjusted according to dust characteristics).
- Conversion factor 60: Convert the air volume unit from m³/h to m³/min (to match the wind speed unit).

 2. Practical Example
If a stone factory needs to treat 12000m³/h of dusty gas, and the filtration wind speed is set to 1.0m/min (suitable for stone dust), the filter area calculation is as follows:
A = 12000 / (1.0 × 60) = 200㎡

3. Notes
1) The filtration wind speed must be selected according to the actual dust characteristics (e.g., 0.6-1.0m/min for fine dust, 1.0-1.5m/min for coarse dust).
2) The calculated filter area should reserve a 10-20% margin (e.g., 200㎡ → 220-240㎡) to adapt to fluctuations in air volume and dust concentration.
3) For high-humidity, viscous, or high-abrasion dust, the margin should be increased to 20-30% to avoid overload.