Record Display for the EPA National Library Catalog


Main Title Surface Area of Calcium Oxide and Kinetics of Calcium Sulfide Formation.
Author Borgwardt, R. H. ; Roache, N. F. ; Bruce, K. R. ;
CORP Author Industrial Environmental Research Lab., Research Triangle Park, NC. ;Northrop Environmental Services, Inc., Research Triangle Park, NC.
Year Published 1984
Report Number EPA/600/J-84/129;
Stock Number PB85-116085
Additional Subjects Reaction kinetics ; Surface chemistry ; Air pollution control ; Burners ; Electric power plants ; Calcium oxides ; Chemical reactions ; Limestone ; Combustion products ; Industrial wastes ; Hydrogen sulfide ; Carbon monoxide ; Injection ; Performance evaluation ; Reprints ; Calcium sulfides ; Injection multistate burners
Library Call Number Additional Info Location Last
NTIS  PB85-116085 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
The article gives results of measurements of the reaction rates of H2S and COS with micrometer-size calcined limestone particles, as a function of the B.E.T. surface area of the CaO over the range of 5.8 to 79 sq m/g. Reactivity increased with the 2.3 power of specific surface area and showed an apparent activation energy of 31 kcal/mol for both reactions. Results indicate that the specific surface area existing immediately after the decomposition of CaCO3 is a critical variable affecting sulfur capture by limestone injected in coal burners. Measured rates are adequate to predict efficient capture by CaS formation at combustion temperatures for the expected values of CaO surface area.