Dust and mist collection
Lapple, Charles E. Consultant, Fluid and Particle Technology, Air Pollution and Chemical Engineering, Los Altos, California.
Last reviewed:January 2020
- Gravity settling chamber
- Inertial device
- Packed bed
- Cloth collector
- Electrostatic precipitator
- Air filter
- Miscellaneous equipment
- Related Primary Literature
- Additional Reading
The physical separation and removal of particles, either solid or liquid, from a gas in which they are suspended. Such separation is required for one or more of the following purposes: (1) to collect a product which has been processed or handled in gas suspension, as in spray-drying or pneumatic conveying; (2) to recover a valuable product inadvertently mixed with processing gases, as in kiln or smelter exhausts; (3) to eliminate a nuisance, as in fly-ash removal; (4) to reduce equipment maintenance, as in engine intake air filters; (5) to eliminate a health, fire, explosion, or safety hazard, as in bagging operations or nuclear separations plant ventilation air; and (6) to improve product quality, as in cleaning of air used in processing pharmaceutical or photographic products. Achievement of these objectives involves primarily gas-handling equipment, but the design must be concerned with the properties and relative amounts of the suspended particles as well as with those of the gas being handled.
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