Main Title |
Effects of interfacial properties on collection of fine particles by wet scrubbers / |
Author |
Woffinden, G. J. ;
Markowski, G. R. ;
Ensor., D. S.
|
Other Authors |
|
CORP Author |
Meteorology Research, Inc., Altadena, Calif.;Industrial Environmental Research Lab., Research Triangle Park, N.C. |
Publisher |
Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service, |
Year Published |
1978 |
Report Number |
EPA-600/7-78-097; MRI77-FR-1503; EPA-68-02-2109 |
Stock Number |
22161 |
OCLC Number |
04961877 |
ISBN |
pbk. |
Subjects |
Scrubber (Chemical technology)--Mathematical models ;
Surface tension ;
Scrubber (Chemical technology)--Mathematical models ;
Surface tension
|
Additional Subjects |
Air pollution control equipment ;
Fines ;
Scrubbers ;
Mathematical models ;
Particles ;
Performance evaluation ;
Coalescing ;
Comparison ;
Drops(Liquids) ;
Surfaces ;
Interfacial tension ;
Wet methods
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EKBD |
EPA-600/7-78-097 |
|
Research Triangle Park Library/RTP, NC |
12/05/2003 |
ELBD ARCHIVE |
EPA 600-7-78-097 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ESAD |
EPA 600-7-78-097 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-284 073 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
ix, 66 p. : ill. ; 28 cm. |
Abstract |
The report gives results of an analysis of typical wet scrubber models to determine the effects of surface tension on particle removal efficiency. Particle capture (removal) is a two-step process: collision of a particle with a spray droplet, and coalescence with the droplet. A change in surface tension of the scrubber water can influence both steps. The coalescence process (after a particle collides with a scrubber droplet) has been described by a film-thinning model that assumes that coalescence is controlled by the thinning rate of an air or vapor layer trapped between an impacting particle and droplet. If the film thins and ruptures before the particle rebounds, coalescence occurs. The thinning model predicts that a reduction in droplet surface tension allows deeper particle penetration into the droplet. The escaping vapor film therefore has a longer more resistive path, resulting in longer thinning times, thus reduced coalescence probability. When the surface tension of a scrubber liquid is modified, collection efficiency may be slightly improved or degraded depending on the spray droplet sizes and the sizes of particles being removed. |
Notes |
Prepared for Environmental Protection Agency, Office of Research and Development. Contract no. 68-02-2109, program element no. EHE624A. June 1978. Includes bibliographical references. |