Record Display for the EPA National Library Catalog

RECORD NUMBER: 15 OF 56

OLS Field Name OLS Field Data
Main Title Coal desulfurization using microwave energy /
Author Zavitsanos, P. D. ; Bleiler, K. W. ; Golden, J. A. ; Kinkead., W. K. ;
Other Authors
Author Title of a Work
Zavitsanos, P. D.
CORP Author Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)
Publisher Environmental Protection Agency, Office of Research and Development [Office of Energy, Minerals, and Industry], Industrial Environmental Research ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA-600/7-78-089; EPA-68-02-2172
Stock Number PB-285 880
OCLC Number 04995110
ISBN pbk.
Subjects Coal--Desulfurization. ; Microwaves. ; Sodium hydroxide. ; Coal--Desulfurization. ; Microwaves. ; Sodium hydroxide. ; Coal--Desulphurization
Additional Subjects Coal preparation ; Desulfurization ; Microwaves ; Air pollution ; Sodium hydroxide ; Sulfur ; Reaction kinetics ; Design criteria ; Chemical analysis ; Thermochemistry ; Economics ; Air pollution abatement
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101DGK8.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-7-78-089 Headquarters Library/Washington,DC 01/15/2014
EKAM  EPA-600/7-78-089 Region 4 Library/Atlanta,GA 07/08/1994
EKBD  EPA-600/7-78-089 Research Triangle Park Library/RTP, NC 12/05/2003
ESAD  EPA 600-7-78-089 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-285 880 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation viii, 70 p. : ill. ; 28 cm.
Abstract
The report describes the use of microwave energy and NaOH to remove pyritic and organic sulfur from several U.S. coals. Exposure times on the order of 1 minute at 1 atmosphere of inert gas can remove up to 85% of the sulfur with little or no loss in heating value of the coal. Data analysis suggests that sulfur is converted to water soluble sulfides (Na2S, Na2Sx) in the process and that sulfur conversion follows first-order reaction kinetics. The mechanism by which fast rates of desulfurization are accomplished is most probably related to the fast (and to some degree selective) in-depth heating of the bed. The activation of water, FeS2, and NaOH creates local volatilization, high temperature and pressure conditions which accelerate sulfur reactions before the coal has a chance to decompose. It is also quite possible that local non-equilibrium chemistry (as a result of localized discharge sites) plays a beneficial role.
Notes
Prepared for Environmental Protection Agency, Office of Research ad Development. Contract no. 68-02-2172, program element no. EHE623A. June 1978. Includes bibliographical references.