Performance of a high-velocity pulse-jet filter, III. Final report Sep 79-Sep 80
The report gives results of a continuing study of the performance of a high-velocity pulse-jet filter. Such filtration has distinct advantages over low-velocity filtration in that the equipment required to clean a gas stream is reduced in size and initial cost as filtration velocity increases. Although high filtration velocity brings on a number of problems, some of them can be dealt with using the information in this report. The study indicates that penetration by particle collection and subsequent seepage (not straight-through penetration) is the primary mechanism by which penetration occurs. A model is presented which encompasses both mechanisms. The model was useful in showing the general trends that should occur with changes in filter operating conditions, but additional information is required to test its ability to predict penetration. Tests were designed to measure the actual fraction of fly ash removed from a polyester felt under typical pulse-jet conditions. Test results showed that failure to remove dust with the cleaning pulse, as well as redisposition, contributed to high pressure drop in pulse-jet filters with nonwoven fabrics.
- Research Organization:
- Harvard Univ., Boston, MA (USA). School of Public Health
- OSTI ID:
- 5075716
- Report Number(s):
- PB-82-196361
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR FILTERS
PERFORMANCE TESTING
FLY ASH
AIR POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
DUST COLLECTORS
FILTRATION
VELOCITY
AEROSOL WASTES
ASHES
CONTROL
EQUIPMENT
FILTERS
POLLUTION CONTROL
RESIDUES
SEPARATION PROCESSES
TESTING
WASTES
424000* - Engineering- Pollution Control Equipment- (1980-1989)