High-temperature, high-pressure testing of zinc titanate in a bench-scale fluidized-bed reactor for 100 cycles

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Integrated gasification combined cycle (IGCC) power plants are being advanced worldwide to produce electricity from coal owing to their potential for superior environmental performance, economics, and efficiency in comparison to conventional coal-based power plants. A key component of these plants is a hot-gas desulfurization system employing efficient regenerable mixed-metal oxide sorbents. Leading sorbent candidates include zinc ferrite and zinc titanate. These sorbents can remove hydrogen sulfide (H{sub 2}S) in the fuel gas down to very low levels (typically <20 ppmv) at 500 to 750{degree}C and can be readily regenerated for multicycle operation with air. To this end, the Research Triangle ... continued below

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84 p.

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Gupta, R. P. & Gangwal, S. K. June 1, 1993.

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  • Research Triangle Institute
    Publisher Info: Research Triangle Inst., Research Triangle Park, NC (United States)
    Place of Publication: Research Triangle Park, North Carolina

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Description

Integrated gasification combined cycle (IGCC) power plants are being advanced worldwide to produce electricity from coal owing to their potential for superior environmental performance, economics, and efficiency in comparison to conventional coal-based power plants. A key component of these plants is a hot-gas desulfurization system employing efficient regenerable mixed-metal oxide sorbents. Leading sorbent candidates include zinc ferrite and zinc titanate. These sorbents can remove hydrogen sulfide (H{sub 2}S) in the fuel gas down to very low levels (typically <20 ppmv) at 500 to 750{degree}C and can be readily regenerated for multicycle operation with air. To this end, the Research Triangle Institute (RTI) has formulated and tested a series of zinc titanate sorbents in a high-temperature, high- pressure HTHP fluidized-bed bench-scale reactor. Multicycle HTHP bench-scale testing of these sorbents under a variety of conditions culminated in the development of a ZT-4 sorbent that exhibited the best overall performance in terms of chemical reactivity, sulfur capacity, regenerability, structural properties, and attrition resistance. Following this parametric study, a life-cycle test consisting of 100 sulfidation-regeneration cycles was carried out with ZT-4 in the bench unit.

Physical Description

84 p.

Notes

OSTI; NTIS; GPO Dep.

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  • Other Information: PBD: Jun 1993

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  • Other: DE94000025
  • Report No.: DOE/MC/25006--3492
  • Grant Number: AC21-88MC25006
  • DOI: 10.2172/10104226 | External Link
  • Office of Scientific & Technical Information Report Number: 10104226
  • Archival Resource Key: ark:/67531/metadc1275753

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1, 1993

Added to The UNT Digital Library

  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 16, 2018, 6:53 p.m.

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Gupta, R. P. & Gangwal, S. K. High-temperature, high-pressure testing of zinc titanate in a bench-scale fluidized-bed reactor for 100 cycles, report, June 1, 1993; Research Triangle Park, North Carolina. (https://digital.library.unt.edu/ark:/67531/metadc1275753/: accessed March 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.