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Development of high efficient desulfurization technique using ultra fine CaO prepared by cheap method

Research Project

Project/Area Number 06555231
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section試験
Research Field 反応・分離工学
Research InstitutionGUNMA UNIVERSITY

Principal Investigator

TAKARADA Takayuki  Gunma Univ.Dept.of Biological & Chemical Engineering Professor, 工学部, 教授 (70154929)

Co-Investigator(Kenkyū-buntansha) FUJIWARA Naoki  Idemitsu Kosan Co, .Ltd Coal Laboratory Research Engineer, 石灰研究所, 研究員
HANADA Mitsuo  Yoshizawa Lime Industry Co., Ltd.Technical Consultant, 常任顧問
ABE Hideomi  Gunma Univ.Dept.of Biological & Chemical Engineering Research Assistant, 工学部, 助手 (30008461)
Project Period (FY) 1994 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 1996: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1994: ¥3,300,000 (Direct Cost: ¥3,300,000)
KeywordsDesulfurization / Ultra fine particle / Coal / Fluidized bed / Combustion / Gasification / カルシウム / イオン交換 / 褐炭
Research Abstract

A new efficient desulfurization technique using a Ca-exchanged brown coal as a sorbent was developed. Yallourn coal, an Australian brown coal was selected for an ion-exchange. Ca (OH) _2 and Ca-containing waste from concrete industry were used as calcium raw materials. Ion-exchange was carried out by soaking and mixing coal particles in the slurry of calcium materials for a certain period. About 10wt% of Ca was easily incorporated into Yallourn coal. It was found that the industrial waste from concrete process was a promising one as a calcium raw material for the ion-exchange method. The reactivity of CaO produced from Ca-exchanged coal to SO_2 gas was extraordinary high and the CaO utilization of above 90% was achieved, while the conversion of natural limestone was less than 30% under the similar experimental conditions. The reactivity of Ca-exchanged coal prepared from the cement waste was similar to that of Ca-exchanged coal from Ca (OH) _2. The high activity of Ca-exchanged coal was recognized in a fluidized bed combustor. Ca-exchanged coal was quite effective for the desulfurization of not only SO_2 but H_2S.The desulfurization technique using Ca-exchanged brown coal is applicable to not only fluidized bed coal combustion but also fluidized bed coal gasification.

Report

(4 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • 1994 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] T.Takarada: "TPD study on SO_2 Gasification of Coal char" Proceedings of 211th ACS Naional Meeting. 41(1). 195-199 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takarada: "Catalytic Effect of Alkali Compounds on SO_2 Gasification of Coal Char" Proceedings of Fifth China-Japan Symposium on Coal and C1 chemistry. 277-279 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 林石英: "加圧条件下におけるCa担持炭の脱硫効果" 第33回石炭科学会議論文集. 233-236 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] G.Benjamin: "褐炭を用いて調整したCaO超微粒子の脱硫特性と酸化特性" 第33回石炭科学会議論文集. 319-322 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 林石英: "加圧条件下における気一固反応速度および流動層運転条件の検討" 第2回流動層シンポジウム論文集. 390-397 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 宝田恭之: "簡易脱硫技術(最近の化学工学48環境化学工学)" 化学工業社, 14 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takarada: ""TPD Study on SO_2 Gasification of Coal Char"" Proceedings of 211th ACS National Meeting. 24-28 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takarada: ""Catalytic Effect of Alkali Compounds on SO_2 Gasification of Coal Char"" Proceedings of Fifth China-Japan Symposium on Coal and C_1 Chemistry. 277-279 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Lin: ""Desulfurization effect of Ca-exchanged coal in pressurized conditions"" Proceedings of 33rd conference on coal science Japan. 319-322 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Lin: ""Study of gas-solid reaction rate and operating conditions of fluidized bed under pressurized conditions"" Proceedings of 2nd SCEJ Symposium on Fluidization. 390-397 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takarada: ""Simple desulfurization"" Recent Chemical Engineering 48-Enviromental Chemical Engineering. 75-83 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takarada: "TPD study on SO_2 Gasification of Coal Char" Proceedings of 211th ACS National Meeting. 41(1). 195-199 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Takarada: "Catalytic Effect of Alkali Compounds on SO_2 Gasification of Coal Char" Proceedings of Fifth China-Japan Symposium on Coal and C1 Chemistry. 277-279 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 林石英: "加圧条件下におけるCa担持炭の脱硫効果" 第33回石炭科学会議論文集. 233-236 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] G.Benjamin: "褐炭を用いて調製したCaO超微粒子の脱硫特性と酸化特性" 第33回石炭科学会議論文集. 319-322 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 林石英: "加圧条件下における気一固反応速度および流動層運転条件の検討" 第2回流動層シンポジウム論文集. 390-397 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 宝田恭之: "簡易脱硫技術(最近の化学工学48環境化学工学)" 化学工業社, 14 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] ガルシア・ベンジャミン: "褐炭を用いて調整したCaO超微粒子によるH_2Sの高効率脱硫" 化学工学会第28回秋季大会研究発表講演要旨集. H1069 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T. Takarada: "TPD study on SO_2 gasification of cool char" Preprint of 211th ACS National Meeting. 41. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 宝田恭之: "触媒を用いた石炭チャーのSO_2ガス化" 化学工学会第27回秋季大会研究発表講演要旨集. 3. 78-78 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 宝田恭之: "TPD法による石炭チャーのSO_2ガス化反応の検討" 化学工学会第60年会講演要旨集.

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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