8 Matching Results

Search Results

Results: 1 - 8
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, July 1, 1992--September 30, 1992

Description: High temperature membrane separation techniques have been applied to gas mixtures involved in coal utilization. For coal gasification, H{sub 2}S has been 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. For coal combustion, SO{sub 2} has been separated from the flue gas, with concentrated SO{sub 3} produced as a by-product. Both processes appear economically viable but each requires fundamental imp… more
Date: December 31, 1992
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, October 1, 1992--December 31, 1992

Description: Successful removal of SO{sub x} from flue gas depends on the development of a membrane able to achieve a current density of 50 mA/cm{sup 2} at a total voltage of approximately 1V. Flooding of electrode has been identified as a problem, leading to increasing polarization over time. The resulting reduction of surface area also tends to limit the mass transfer flux, reducing the efficiency of the cell. To reduce flooding, new materials and techniques of manufacture will be investigated, in the att… more
Date: December 31, 1992
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, October 1, 1993--December 31, 1993

Description: Membrane testing in the full-cell environment has been successful in H{sub 2}S removal applications, but largely ineffective for obtaining high current efficiencies due to hydrogen leakage through the membrane. A preprocessed zirconia membrane successful in past experiments was utilized in continued efforts to truncate hydrogen cross-over. An alternative material forming a stabilized conductive cathode under 100 ppmv H{sub 2}S conditions is possible with Co. Development of a Co cathode identica… more
Date: December 31, 1993
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, January 1, 1994--March 31, 1994

Description: High temperature membrane separation techniques have been applied to gas mixtures involved in coal utilization. For coal gasification, H{sub 2}S has been 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. For coal combustion, SO{sub 2} has been separated from the flue gas, with concentrated SO{sub 3} produced as a by-product. Both processes appear economically viable but each requires fundamental imp… more
Date: August 1, 1994
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, January 1, 1993--March 31, 1993

Description: High temperature membrane separation techniques have been applied to gas mixtures involved in coal utilization. For coal gasification, H{sub 2}S has been 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. For coal combustion, SO{sub 2} has been separated from the flue gas, with concentrated SO{sub 3} produced as a by-product. Both processes appear economically viable but each requires fundamental imp… more
Date: September 1, 1993
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
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: September 1, 1992
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, April 1, 1993--June 30, 1993

Description: Successful removal of SO{sub x} from flue gas depends on the development of a membrane able to achieve a current density of 50 ma/cm{sup 2} at a total voltage of approximately 1V. Flooding of electrode has been identified as a problem, leading to increasing polarization over time. The resulting reduction of surface area also tends to limit the mass transfer flux, reducing the efficiency of the cell. To reduce flooding, new materials and techniques of manufacture will be investigated, in the att… more
Date: November 1, 1993
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
open access

High temperature membranes for H{sub 2}S and SO{sub 2} separations. Quarterly progress report, January 1, 1992--March 31, 1992

Description: High temperature membrane separation techniques have been applied to gas mixtures involved in coal utilization. For coal gasification, H{sub 2}S has been 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. For coal combustion, SO{sub 2} has been separated from the flue gas, with concentrated SO{sub 3} produced as a by-product. Both processes appear economically viable but each requires fundamental i… more
Date: July 1, 1992
Creator: Winnick, J.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen