Open AccessHigh temperature electrochemical polishing of H{sub 2}S from coal gasification process streams. Quarterly progress report, July 1, 1995--September 30, 1995
Author(s) -
Jack Winnick
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/206992
Subject(s) - coal , coal gasification , boiler (water heating) , combustion , waste management , coal combustion products , electricity generation , environmental science , combined cycle , energy transformation , raw material , process engineering , integrated gasification combined cycle , syngas , chemistry , gas turbines , engineering , hydrogen , power (physics) , thermodynamics , mechanical engineering , physics , organic chemistry
Coal may be used to generate electrical energy by any of several processes, most of which involve combustion or gasification. Combustion in a coal-fired boiler and power generation using a steam-cycle is the conventional conversion method; however total energy conversion efficiencies for this type of process are only slightly over 30%. Integration of a gas-cycle in the process (combined cycle) may increase the total conversion efficiency to 40%. Conversion processes based on gasification offer efficiencies above 50%. H{sub 2}S is the predominant gaseous contaminant in raw coal gas. This process is concerned with the removal of H{sub 2} from coal gas through an electrochemical membrane technology