High temperature electrochemical separation of H sub 2 S from coal gasification process streams
An advanced process for the separation of hydrogen sulfide from coal gasification product streams through an electrochemical membrane is being developed. 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 negligible pressure loss through the separator. The process is economically attractive by the lack of adsorbents and the lack of a Claus process for sulfur recovery. Research conducted during the present quarter is highlighted, with an emphasis on progress towards the goal of an economically viable H{sub 2}S removal technology for use in coal gasification facilities providing polished fuel for co-generation coal fired electrical power facilities and Molten Carbonate Fuel Cell electrical power facilities. Polishing application of this technology to coal gasification synthesis gas has been demonstrated with H{sub 2}S removals as high as 89.1% recorded. No successful runs with stainless steel housings have yet been achieved. However, since stoichiometric CO{sub 2} removal with stainless steel housings has been achieved, H{sub 2}S removal is achievable.
- Research Organization:
- Georgia Inst. of Tech., Atlanta, GA (United States). School of Chemical Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-91PC91288
- OSTI ID:
- 7205446
- Report Number(s):
- DOE/PC/91288-T3; ON: DE92017954
- Country of Publication:
- United States
- Language:
- English
Similar Records
High temperature electrochemical separation of H{sub 2}S from coal gasification process streams. Quarterly progress report, April 1, 1992--June 30, 1992
High temperature electrochemical polishing of H{sub 2}S from coal gasification process stream. Quarterly progress report, January 1, 1995--March 31, 1995
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROGEN SULFIDES
REMOVAL
SYNTHESIS GAS
DESULFURIZATION
ELECTROCHEMISTRY
EXPERIMENTAL DATA
HOT GAS CLEANUP
MEMBRANES
PROGRESS REPORT
SEPARATION PROCESSES
THEORETICAL DATA
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DATA
DOCUMENT TYPES
FLUIDS
GASES
HYDROGEN COMPOUNDS
INFORMATION
NUMERICAL DATA
PURIFICATION
SULFIDES
SULFUR COMPOUNDS
010402* - Coal
Lignite
& Peat- Purification & Upgrading
010404 - Coal
Lignite
& Peat- Gasification
400400 - Electrochemistry