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High temperature electrochemical separation of H{sub 2}S from coal gasification process streams. Quarterly progress report, July 1, 1992--September 30, 1992

Description: A method of polishing coal synthesis by electrochemical operation is being perfected. An electrochemical potential gradient is used to remove H{sub 2}S from the coal gas stream, leaving only H{sub 2} to enrich the exiting polished gases. Sulfur byproduct is swept away by an inert sweep gas and later condensed. Current experiments are based on improving selective removal from low initial H{sub 2}S contents (10 ppm). High flow rate data is also being investigated along with sealing the cell housi… more
Date: 1992
Creator: Winnick, J.
Item Type: Refine your search to only Report
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High temperature electrochemical separation of H{sub 2}S from coal gasification process streams. Quarterly progress report, July 1, 1993--September 30, 1993

Description: The cobalt cathode used in the EMS proved stable and efficient. Removal of H{sub 2}S was deterred by the possibility of hydrogen cross-over from process gases creating alternate reactions unfavorable to the removal system. Application of back pressure from the anode side of the cell would be the simplest solution to H{sub 2} cross-over. Examination of water proof of the vapor in the anode exit gases would provide proof of the aforementioned reaction hypothesis. Cobalt aluminate formation should… more
Date: 1993
Creator: Winnick, J.
Item Type: Refine your search to only Report
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High temperature electrochemical separation of H{sub 2}S from coal gasification process streams. Quarterly progress report, October 1, 1991--December 31, 1991

Description: An advanced process for the separation of hydrogen sulfide from coal gasification product streams through an electrochemical membrane is being developed using the funds from this grant. H{sub 2}S is removed from the syn-gas stream, split into hydrogen, which enriches the syn-gas, and sulfur, which can be condensed from an inert gas sweep stream. The process allows removal of H{sub 2}S without cooling the gas stream and with neglible pressure loss through the separator. The process is economical… more
Date: 1991
Creator: Winnick, J.
Item Type: Refine your search to only Report
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High temperature electrochemical separation of H{sub 2}S from coal gasification process streams. Quarterly progress report, October 1, 1992--December 30, 1992

Description: Experimentation with a rigidized, electrolyte filled tile, left much to be desired. The instability of the tiles at molten conditions ( > 550{degree}C), provided the necessary mechanism for H{sub 2} to penetrate the membrane. Once H{sub 2} cross-over occurs the entire objective of electrochemical separation becomes nullified. The Zircar membranes used last quarter provided excellent protection against H{sub 2}, prompting a reversion back to them. If porosities are strictly adhered to and the wa… more
Date: 1992
Creator: Winnick, J.
Item Type: Refine your search to only Report
open access

High temperature membranes for H sub 2 S and SO sub 2 separations. Quarterly progress report, April 1, 1992--June 30, 1992

Description: Work has continued on application of this technology to polishing H{sub 2}S from simulated coal gasification process streams. Both stainless steel and MACOR housings were successfully used, with 98% (100 ppmv H{sub 2}S to 2 ppmv H{sub 2}S) removal observed at a flow rate of 230 cc/min and a process temperature of 700{degrees}C with stainless steel housings (Run 57) and greater than 80% (11 ppmv H{sub 2}S to less than 2 ppmv H{sub 2}S) at a flow rate of 100 cc/min and a temperature of 650{degree… more
Date: January 1, 1992
Creator: Winnick, J.
Item Type: Refine your search to only Report
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