Record Display for the EPA National Library Catalog

RECORD NUMBER: 43 OF 340

OLS Field Name OLS Field Data
Main Title Calcium Hydroxide and Calcium Carbonate Particle Size Effects on Reactivity with Sulfur Dioxide.
Author Gullett, B. K. ; Blom, J. A. ;
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-87/210;
Stock Number PB88-170576
Additional Subjects Sulfur dioxide ; Reactivity ; Particle size ; Sorbents ; Air pollution ; Calcium hydroxides ; Calcium carbonates ; Stationary sources
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB88-170576 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 17p
Abstract
The paper reports results of measurements of the effect of in situ calcium-based sorbent particle size upon reactivity with 3000 ppm SO2 in an 1100 c drop-tube furnace, using on-line collection of the reacted sorbent with a particle cascade impactor. Significant agglomeration occurred for Ca(OH)2, while little was apparent for CaCO3. Reactivity of all sorbent particles increases as the measured particle diameter decreases, such that conversion is inversely related to diameter to the 0.22 to 0.32 power. For these sorbents, Ca(OH)2 particles had greater reactivity than the similarly sized CaCO3 sorbent.