6. Bag filters
These are dust collectors in which the dust-laden fumes pass through a filter layer on which the particles are deposited. Unlike cyclone separators or scrubbers, where particles are removed continuously, in this case they accumulate and must be periodically separated by a cleaning process. The filter layer can consist of :
of woven media;
loose fibers or felts;
porous membranes, usually attached to a support ;
filter papers.
Filters can be either high-efficiency, used in nuclear and cleanroom applications, or standard-efficiency. In the former case, accumulated dust is often eliminated with the filter media itself, as entire cassettes have to be changed, whereas in the latter case, filter media last for...
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Bag filters
Wet separators. Washers
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Bibliography
General
- Perry's Chemical Engineering Handbook, - 6e édition.
- BUONICORE, DAVIS - Air Pollution Engineering Manual. - Air and Waste Management Association, ISBN 0-442-00843-0.
Measurement and characterization
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