Record Display for the EPA National Library Catalog

RECORD NUMBER: 6 OF 7

OLS Field Name OLS Field Data
Main Title Lignosulfonate-Modified Calcium Hydroxide for Sulfur Dioxide Control.
Author Kirchgessner, D. A. ; Lorrain, J. M. ;
CORP Author Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Year Published 1987
Report Number EPA-68-02-3988; EPA/600/J-87/284;
Stock Number PB88-185236
Additional Subjects Sulfur dioxide ; Calcium hydroxides ; Boilers ; Air pollution control ; Sorbents ; Nitrogen oxides ; Limestone ; Lignocellulose ; Removal ; Particle size ; Deagglomeration ; Reprints ; LIMB process ; Lignosulfonate
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB88-185236 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1988
Collation 6p
Abstract
The article discusses the use of lignosulfonate-modified calcium hydroxide Ca(OH)2 for sulfur dioxide (SO2) control. The limestone injection multistage burner (LIMB) process is currently being developed at the U.S. EPA as a low cost retrofittable technology for controlling oxides of sulfur and nitrogen from coal-burning utility boilers. The most effective commercial calcium-based sorbent for this process is Ca(OH)2, with SO2 removals of about 50%. Additions of calcium lignosulfonate up to 1.5 mass % of the dry product, introduced with the water of hydration, increase the SO2 capture of the resulting Ca(OH)2 to 60%. This is achieved through particle size reduction in the modified hydroxides. The principal mechanism of size reduction appears to be deagglomeration of the Ca(OH)2 crystals; a secondary benefit is derived from crystal size reduction. (Copyright (c) 1987 by the American Chemical Society.)