石炭ガス化複合発電(IGCC)用新規湿式脱硫プロセスに関する試験研究

  • 和田 潤
    東京電力株式会社エネルギー・環境研究所
  • 辻野 敏男
    宇部興産株式会社機械・エンジニアリング事業本部

書誌事項

タイトル別名
  • Research and Development of a New Wet Desulfurization Process for Coal Gasification Combined Cycle (IGCC).
  • セキタン ガスカ フクゴウ ハツデン IGCC ヨウ シンキ シッシキ ダツリュウ プロセス ニ カンスル シケン ケンキュウ

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Pilot testing of a new wet desulfurization process using dimethyl propylene urea, a polar heterocyclic aprotic solvent, with COS hydrolysis catalyst has been carried out using a high sulfur coal based syngas. This process, named Polar-1TM has demonstrated the superior performance for IGCC economics, such as simultaneous absorption of organic and inorganic sulfur compounds and high selectivity of sulfur compound absorption over CO2 absorption. The investigation of testing data has also been extended to acid gas specification, solvent degradation and effect of trace components in syngas.<BR>A comparative modified MDEA solvent has also been tested in the same pilot plant, and Polar-1TM process has demonstrated the superiority over modified MDEA process in the principal process performance for IGCC economics. This innovative desulfurization process, “Polar-1TM” is suggestive to overwhelm the existing wet desulfurization processes by deleting upstream gaseous COS converter and making compact design of sulfur recovery plant, for coal based IGCC application in terms of the overall investment and utilities consumptions.

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