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RECORD NUMBER: 23 OF 39

OLS Field Name OLS Field Data
Main Title High-Temperature, Short-Time Sulfation of Calcium-Based Sorbents. 2. Experimental Data and Theoretical Model Predictions.
Author Milne, C. R. ; Silcox, G. D. ; Pershing, D. W. ; Kirchgessner, D. A. ;
CORP Author Utah Univ., Salt Lake City. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1990
Year Published 1990
Report Number EPA-R-811001; EPA/600/J-90/313;
Stock Number PB91-146670
Additional Subjects Air pollution control ; Sorbents ; Injection ; Sulfation ; Mathematical models ; Experimental design ; High temperature tests ; Heat transfer ; Mass transfer ; Sulfur dioxide ; Diffusion ; Dry methods ; Thermodynamics ; Calcium carbonates ; Calcium hydroxides ; Reprints ; Flue gas desulfurization
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB91-146670 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/13/1991
Collation 17p
Abstract
The paper gives results of an analysis of the fundamental processes for the injection of CaCO3 and Ca(OH)2 for the removal of SO2 from combustion gases of coal-fired boilers, on the basis of experimental data and a comprehensive theoretical model. Sulfation data were obtained in a 30-kW isothermal gas-particle transport reactor at conditions simulating those of upper-furnace injection. The theoretical model accounts for particle structure, calcination, sintering, sulfation, and heat and mass transfer. Pore diffusion, product-layer diffusion, and sintering appear to be the principal processes that govern the rate of SO2 capture for the hydrate particles of interest for commercial dry sorbent injection. (Copyright (c) 1990 American Chemical Society.)