Simultaneous Hot Gas Desulfurization and Improved Filtration

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This research suggests the use of waste metal oxide materials for the removal of sulfur in hot gas streams as an alternative to either traditional calcium based sorbents, or regenerable metal oxide sorbents. When classified to a desired particle size and injected into a high temperature coal utilization process, such a ``once-through`` sorbent can effectively remove sulfur and simultaneously increase the permeability of dust collected at a downstream ceramic filter station in a highly cost effective manner. There is considerable technical and economic promise in the use of waste metal oxides for the removal of sulfur dioxide (SO{sub 2}) and ... continued below

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13 p.

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Eggerstedt, P.M.; Zievers, J.F.; Patel, P.C. & Zievers, E.C. December 31, 1996.

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Description

This research suggests the use of waste metal oxide materials for the removal of sulfur in hot gas streams as an alternative to either traditional calcium based sorbents, or regenerable metal oxide sorbents. When classified to a desired particle size and injected into a high temperature coal utilization process, such a ``once-through`` sorbent can effectively remove sulfur and simultaneously increase the permeability of dust collected at a downstream ceramic filter station in a highly cost effective manner. There is considerable technical and economic promise in the use of waste metal oxides for the removal of sulfur dioxide (SO{sub 2}) and hydrogen sulfide (H{sub 2}S) from coal gas streams containing these components, based upon results from tests under controlled laboratory conditions. Several waste metal oxides, including the oxides of iron, tin, and zinc, have been evaluated both individually and in combination to assess their capacity for sulfur capture in both oxidizing and reducing atmospheres. Additionally, inert materials such as silica sand as well as more traditional materials such as dolomite and limestone, were evaluated as sorbents under identical test conditions to serve as reference data. Efforts also explored the overall domestic availability of the best performing waste metal oxide sorbents, taking into account their geographic distributions, intrinsic value, etc. to provide the groundwork for commercial implementation of a low cost, highly effective sulfur sorbent for eventual use in both coal combustion and coal gasification processes. Recent elevated temperature thermogravimetric analysis (TGA) testing of these samples, performed at the Institute of Gas Technology (IGT), has further confirmed the trends in sulfur affinity which were observed in the preliminary testing.

Physical Description

13 p.

Notes

OSTI as DE97051014

Medium: P; Size: 13 p.

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  • Advanced coal-fired power systems review meeting, Morgantown, WV (United States), 16-18 Jul 1996

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  • Other: DE97051014
  • Report No.: DOE/ER/81786--97/C0717
  • Report No.: CONF-960757--10
  • Grant Number: FG02-94ER81786
  • Office of Scientific & Technical Information Report Number: 419317
  • Archival Resource Key: ark:/67531/metadc677561

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  • December 31, 1996

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  • July 25, 2015, 2:20 a.m.

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  • April 7, 2017, 12:48 p.m.

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Eggerstedt, P.M.; Zievers, J.F.; Patel, P.C. & Zievers, E.C. Simultaneous Hot Gas Desulfurization and Improved Filtration, article, December 31, 1996; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc677561/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.