Innovative hot-gas cleanup processes for advanced IGCC systems and for hydrogen production processes

Michihiro Ishimori, Yuya Mezaki, Seiji Terashita, Masafumi Katsuta

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Development of a hot-gas cleanup system, especially highly efficient desulfurization technology has been studied to realize effective coal gasification plants such as advanced IGCC systems for electricity and advanced processes for high-grade hydrogen production. We have explored innovative desulfurization agents composed of zinc ferrite, metal oxides and/or metal sulfides for hot-gas cleanup processes, using simulated coal gas by an entrained-flow gasifier. It was shown that by use of the above agents, hydrogen sulfide itself is almost completely removed and that sulfur atoms of sulfuric substances such as COS involved in coal gas are also catalytically reduced to hydrogen sulfide and subsequently removed; total concentration of H2S and COS involved in the simulated coal gas could be decreased to less than detection limit (PFD/GC; 20 ppbv). The desulfurization agents can be satisfactorily used to realize advanced IGCC and IGFC plants having extremely high thermal efficiencies, and for advanced processes of high-grade hydrogen production for PEFC.

    Original languageEnglish
    Title of host publication25th Annual International Pittsburgh Coal Conference, PCC - Proceedings
    Publication statusPublished - 2008
    Event25th Annual International Pittsburgh Coal Conference, PCC - Pittsburgh, PA
    Duration: 2008 Sep 292008 Oct 2

    Other

    Other25th Annual International Pittsburgh Coal Conference, PCC
    CityPittsburgh, PA
    Period08/9/2908/10/2

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    Keywords

    • Desulfurization (agent)
    • Gasification
    • Hot gas cleanup
    • Hydrogen production
    • IGCC
    • Zinc ferrite

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Environmental Engineering

    Cite this

    Ishimori, M., Mezaki, Y., Terashita, S., & Katsuta, M. (2008). Innovative hot-gas cleanup processes for advanced IGCC systems and for hydrogen production processes. In 25th Annual International Pittsburgh Coal Conference, PCC - Proceedings