Development of novel copper-based sorbents for hot-gas cleanup. Final technical report, 1 September 1992--31 August, 1993
- Institute of Gas Technology, Chicago, IL (United States)
- Massachusetts Inst. of Tech., Cambridge, MA (United States)
The objective of this investigation is to evaluate two novel copper-based sorbents, namely Cu-Cr and Cu-Ce, for their effectiveness in removing hydrogen sulfide from fuel gas in the temperature range of 650 to 850 C. Such high temperatures will be required for the new generation of gas turbines in Integrated Gasification Combined Cycle systems. Structural and kinetic studies were conducted on various compositions of the two Cu-based sorbents to determine the optimum sorbent composition. The effect to operating conditions on the performance of the sorbents along with the stability and regenerability of the selected sorbents in successive sulfidation/regeneration operation were determined. Overall, the CuO-lean binaries (with Cr{sub 2}O{sub 3} or CeO{sub 2}) may benefit the H{sub 2}S breakthrough levels. While this is at the expense of sulfur capacity for the Cu-Cr-O sorbents, it may not affect the capacity of the Cu-Ce-O sorbents. Parametric multicycle desulfurization tests were conducted in a bench-scale quartz reactor at one atmosphere using the CuCr{sub 2}O{sub 4} and CuO-CeO{sub 2} sorbents. The parameters studied included temperature, space velocity, and feed gas composition. Both sorbents were able to reduce the H{sub 2}S concentration of the reactor feed gas from 5,000 ppmv to less than 1 ppmv to 10 ppmv at 750 to 850 C. Both sorbents were found to consume H{sub 2} and produce SO{sub 2} during the initial stages of sulfidation. Analysis of partially sulfided samples identified predominantly Cu metal, the additive oxide and small amounts of oxidic copper. For the Cu-Cr-O sorbents, the latter is apparently sufficient to keep the H{sub 2}S pre-breakthrough levels as low as has been reported in this work. For the Cu-Ce-O sorbents, in which very little or no oxidic copper remained, the low H{sub 2}S levels may be due to the participation of CeO{sub 2}, whose sulfidation is promoted by Cu.
- Research Organization:
- Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 10132236
- Report Number(s):
- DOE/PC/92521-T93; ON: DE94008035; BR: AV0100000/AV0102000; TRN: AHC29406%%19
- Resource Relation:
- Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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Development of novel copper-based sorbents for hot-gas cleanup. [Quarterly] technical report, March 1, 1993--May 31, 1993
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Related Subjects
HOT GAS CLEANUP
ADSORBENTS
PERFORMANCE TESTING
FUEL GAS
DESULFURIZATION
COPPER OXIDES
SULFIDATION
CHROMIUM OXIDES
CERIUM OXIDES
PROGRESS REPORT
COMBINED-CYCLE POWER PLANTS
COAL GASIFICATION
STRUCTURAL CHEMICAL ANALYSIS
SORPTIVE PROPERTIES
PHYSICAL PROPERTIES
EXPERIMENTAL DATA
010402
PURIFICATION AND UPGRADING