Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Development of a Molten Carbonate Process for Removal of Sulfur Dioxide from Power Plant Stack Gases. Part I. Process Chemistry - Reduction.
CORP Author Atomics International, Canoga Park, Calif.
Year Published 1968
Report Number AI-70-5; PH-86-67-128;
Stock Number PB-191 957
Additional Subjects ( Power plants(Establishments) ; Air pollution) ; ( Air pollution ; Combustion products) ; ( Sulfur compounds ; Air pollution) ; ( Carbonates ; Adsorption) ; ( Sulfates ; Reduction(Chemistry)) ; ( Adsorption ; Waste gases) ; Waste gases ; Dioxides ; Reaction kinetics ; Catalysts ; Iron ; Alkali metal compounds ; Carbon monoxide ; Hydrogen ; Power plants(Establishments) ; Air pollution control equipment ; Sulfur dioxide ; Scrubbers ; Waste gas revovery ; Fused salts
Library Call Number Additional Info Location Last
NTIS  PB-191 957 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 107p
In the Molten Carbonate Process, the flue gases are scrubbed with a melt of alkali metal carbonates. This produces a melt mixture of alkali metal carbonates, sulfites, and sulfates, which must be treated to regenerate the carbonate and recover the sulfur. The first step of the treatment is the chemical reduction of the sulfite and sulfate to sulfide, using hydrogen, carbon monoxide, or carbon as the reducing agent. The chemistry of the hydrogen reduction step was studied in detail. It was found that the reduction was zero-order with respect to sulfate concentration, and that the rate was catalyzed by iron, and autocatalyzed by the sulfide product. Studies with carbon monoxide indicate it is not as reactive as hydrogen. However, its reactivity increases with pressure more rapidly than hydrogen, so it may be useful at high pressures. (Author)