Open AccessHigh temperature electrochemical polishing of H{sub 2}S from coal gasification process streams. Quarterly progress report, April 1, 1996--June 30, 1996
Author(s) -
J Winnick
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/415345
Subject(s) - coal , coal gasification , boiler (water heating) , integrated gasification combined cycle , waste management , coal combustion products , combustion , combined cycle , electricity generation , environmental science , coal gas , syngas , energy transformation , process engineering , hydrogen , chemistry , engineering , gas turbines , mechanical engineering , power (physics) , physics , organic chemistry , quantum mechanics , thermodynamics
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 report describes the removal of hydrogen sulfide from coal gas using an electrochemical membrane