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RECORD NUMBER: 23 OF 100

OLS Field Name OLS Field Data
Main Title Development and Pilot Plant Evaluation of Silica-Enhanced Lime Sorbents for Dry Flue Gas Desulfurization (Journal Version).
Author Jozewicz, W. ; Jorgensen, C. ; Chang, J. C. S. ; Sedman, C. B. ; Brna, T. G. ;
CORP Author Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1988
Year Published 1988
Report Number EPA-68-02-3988; EPA/600/J-88/177;
Stock Number PB89-119481
Additional Subjects Desulfurization ; Flue gases ; Sulfur dioxide ; Air pollution abatement ; Air pollution control equipment ; Calcium hydroxides ; Sorbents ; Performance evaluation ; Design criteria ; Pilot plants ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB89-119481 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/14/1989
Collation 11p
Abstract
The paper discusses recent work on lime enhancement and testing at the bench-scale, followed by evaluation of the more promising sorbents in a pilot plant to develop low cost, retrofittable flue gas cleaning technology specifically the development of highly reactive sorbents. Conversion of Ca(OH)2 with SO2 increased several-fold when Ca(OH)2 was slurried with fly ash first and later exposed to SO2 in a laboratory packed bed reactor; Ca(OH)2 enhancement increasing with increased fly ash amount. Diatomaceous earths were very effective reactivity promoters of lime-based sorbents. Analysis of the promoted sorbents revealed the formation of a new phase (calcium silicate hydrates) after hydration, which may be the basis for improved SO2 capture. Fly ash/lime and diatomaceous earth/lime sorbents were tested in a 100 cu m/h pilot facility incorporating a gas humidifier, a sorbent duct injection system, and a baghouse. The inlet SO2 concentration was 1000-2500 ppm. With once-through dry sorbents injection into the humidified flue gas, the total SO2 removal ranged from 50 to 90%. (Copyright (c) 1988 Air Pollution Control Association.)