| Main Title |
Filter cake redeposition in a pulse-jet filter / |
| Author |
Leith, David. ;
First., Melvin W.
|
| Other Authors |
|
| CORP Author |
Harvard School of Public Health, Boston, Mass.;Industrial Environmental Research Lab., Research Triangle Park, N.C. |
| Publisher |
Environmental Protection Agency, Office of Research and Development ; For sale by the National Technical Information Service, |
| Year Published |
1977 |
| Report Number |
EPA-600/7-77-022; EPA-R-801399 |
| Stock Number |
PB-266 233 |
| OCLC Number |
04087090 |
| ISBN |
pbk. |
| Subjects |
Filters and filtration ;
Filters and filtration
|
| Additional Subjects |
Dust collectors ;
Air pollution control ;
Air filters ;
Jet engines ;
Caking ;
Particles ;
Deposition ;
Mathematical models ;
Experimental design ;
Numerical analysis ;
Fabric filters
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD ARCHIVE |
EPA 600-7-77-022 |
|
Headquarters Library/Washington,DC |
02/11/2014 |
| EKBD |
EPA-600/7-77-022 |
|
Research Triangle Park Library/RTP, NC |
10/17/2003 |
| ESAD |
EPA 600-7-77-022 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-266 233 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
vi, 33 p. : ill. ; 28 cm. |
| Abstract |
The report gives results of a pilot-scale study of pulse-jet filter cleaning, a process that is ineffective to the extent that collected dust redeposits, rather than falling to the hopper. Dust tracer techniques were used to measure the amount of redeposition. A mathematical model based on experimental results was developed to describe dust transfer from bag to bag, redeposition on the pulsed bag, and migration to the hopper. At conventional filtration velocities (5 cm/s), most of the dust freed from the bag by the cleaning pulse was found to redeposit (38% on the cleaned bag and 50% on the two neighboring bags) rather than fall to the hopper. At high velocities (15 cm/s), redeposition was more pronounced, 83% on the cleaned bag and 16% on the neighboring bags. At a sufficiently high velocity, redeposition may become total: no dust will fall into the hopper, the dust cake will continue increasing in thickness, and the pressure drop will increase without limit as long as constant velocity is maintained. The study indicates that reasonable pressure drop can be achieved at high velocity only when there is a reduction in filter cake redeposition. Although filter performance depends on more parameters than were examined, the trend of increasing redeposition with increasing velocity may persist regardless of the dust, fabric, or filter configuration. |
| Notes |
Grant no. R801399, program element no. EHE624. Issued Mar. 1977. Includes bibliographical references (p. 27). |
| Place Published |
Washington Springfield, Va. |
| Access Notes |
Also available via the World Wide Web |
| Corporate Au Added Ent |
United States. Environmental Protection Agency. Office of Research and Development. |
| Corp Au Ser Add Ent |
United States. Environmental Protection Agency. Interagency energy-environment research and development program report ; EPA-600/7-77-022. |
| PUB Date Free Form |
1977 |
| Series Title Untraced |
Interagency energy-environment research and development program report ; EPA-600/7-77-022 |
| NTIS Prices |
PC A04/MF A01 |
| BIB Level |
m |
| Cataloging Source |
OCLC/T |
| OCLC Time Stamp |
20140206084400 |
| Language |
eng |
| SUDOCS Number |
EP 1.23/8:600/7-77-022 |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
01626cam 2200361Ii 45020 |
