Actions for Kinetics of Mn-based sorbents for hot coal gas desulfurization. Quarterly progress report, September 15, 1995--December 15, 1995 [electronic resource].

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Kinetics of Mn-based sorbents for hot coal gas desulfurization. Quarterly progress report, September 15, 1995--December 15, 1995 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
27 pages : digital, PDF file
Additional Creators
University of Minnesota. Department of Civil and Mineral Engineering, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The Morgantown Energy Technology Center (METC) of the U.S. Department of Energy (DOE) is actively pursuing the development of reliable and cost-effective processes to clean coal gasifier gases for application to integrated gasification combined cycle (IGCC) and molten carbonate fuel cell (MCFC) power plants. A large portion of gas cleanup research has been directed towards hot gas desulfurization using Zn-based sorbents. However, zinc titanate sorbents undergo reduction to the metal at temperatures approaching 700°C and lose reactivity because of volatilization. In addition, sulfate formation during regeneration leads to spalling of reactive surfaces. Because of these problems with zinc-based sorbents, METC has shown interest in formulating and testing manganese-based sorbents. Currently, many proposed IGCC processes include a water quench prior to desulfurization. This quench is required for two reasons; limitations in the process hardware (1000°C), and excessive Zn-based sorbent loss (about 700°C). With manganese, the water quench is not necessary to avoid sorbent loss, since Mn-based sorbents have been shown to retain reactivity under cyclic testing at 900°C. This advantage of manganese over zinc has potential to increase thermal efficiency as the trade-off of increasing the equilibrium H₂S over-pressure obtainable with a manganese sorbent. In the work which is reported here, lower loading temperatures (as low as 400°C) are studied. Also formulations containing titania rather then alumina are studied to attempt to improve performance.
Report Numbers
E 1.99:doe/pc/94212--t5
doe/pc/94212--t5
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Note
Published through SciTech Connect.
12/15/1995.
"doe/pc/94212--t5"
"DE96007564"
Berns, J.; Hepworth, M.T.
Funding Information
FG22-94PC94212
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