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Effects of surface-modified metal oxide on CO2 desorption from amine absorbents

Research Project

Project/Area Number 17K06888
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Properties in chemical engineering process/Transfer operation/Unit operation
Research InstitutionShinshu University

Principal Investigator

Takahashi Nobuhide  信州大学, 学術研究院繊維学系, 教授 (40377651)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords地球温暖化対策 / CO2回収貯留 / 化学吸収法 / 低温放散促進 / 酸触媒添加による放散促進 / 固定床型放散装置 / 容量係数 / 連続式固定床型放散装置 / スルホン酸基修飾活性アルミナ粒子 / 放散促進効果の持続性 / 反応管内放散速度分布 / CO2化学吸収 / CO2放散促進 / 酸触媒 / 酸性官能基修飾 / アルミナ粒子 / 固定床放散装置 / 劣化挙動 / 吸収液再生エネルギー削減 / 酸触媒添加 / CO2ローディング / スルホン基 / リン酸基 / 二酸化炭素排出削減 / 反応・分離工学 / 触媒・化学プロセス
Outline of Final Research Achievements

As for the CO2 chemical absorption method, which is one of the technologies for separating CO2 from flue gases from large-scale emitting sources like fire power plants, it is crucial to reduce the energy consumption in the regeneration of the chemical absorbent with CO2 desorption for its expanded introduction. Then, this study examined the method where alumina particles modified with acidic functional groups were added to the chemical absorbent to promote CO2 desorption under 100 degrees C. As a result, it was found out that the addition of the alumina particles modified with sulfonic group was highly effective in promoting CO2 desorption. This was also confirmed in the continuous fixed bed reactor packed with the particles. Moreover, the spatial distribution of CO2 desorption rate in the continuous reactor was investigated and the characteristics of the reactor were elucidated.

Academic Significance and Societal Importance of the Research Achievements

CO2を火力発電所などの排ガスから分離回収し地中に貯留するCO2回収貯留技術が温暖化対策として注目されているが、その実用化のためには、その過程で消費されるエネルギーの削減が必要である。CO2を吸収した吸収液からCO2を放散し吸収液を再生する従来の方法は100℃以上のスチームにより過剰な熱を供給することで行われているが、本研究の方法により、100℃未満でも十分な速度で放散が進行し、所要エネルギーを大幅に削減することができ、実用化に近づくと期待される。また、添加する粒子の酸性質がアミン吸収液からのCO2放散に及ぼす影響が明らかになり反応メカニズムが解明されるとともに、反応装置の設計指針が得られる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2017 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results) Remarks (2 results)

  • [Journal Article] Influence of addition of functionalized alumina particles on CO2 stripping from amine solvents2017

    • Author(s)
      Nobuhide Takahashi, Satoko Miyakawa, Iori Shimada, Mitsumasa Osada, Hiroshi Fukunaga
    • Journal Title

      Energy procedia

      Volume: 印刷中 Pages: 2024-2029

    • DOI

      10.1016/j.egypro.2017.03.1336

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 酸触媒粒子を充填した固定床反応器によるアミン吸収液からのCO2放散2020

    • Author(s)
      北澤諒一, 嶋田五百里, 長田光正, 福長博, 高橋伸英
    • Organizer
      化学工学会第85年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Influence of amine-based absorbents on CO2 desorption in membrane flash process using alumina porous hollow fiber membranes2019

    • Author(s)
      Nobuhide Takahashi
    • Organizer
      The 10th Asian Pacific Confederation of Chemical Engineering Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 酸性官能基修飾アルミナ粒子の酸特性とアミン吸収液からのCO2放散促進効果2019

    • Author(s)
      木原千依, 嶋田五百里, 長田光正, 福長博, 高橋伸英
    • Organizer
      第50回中部化学関係学協会支部連合秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 酸性官能基修飾アルミナ粒子の添加がアミン吸収液からのCO2放散に及ぼす影響2019

    • Author(s)
      木原千依, 嶋田五百里, 長田光正, 福長博, 高橋伸英
    • Organizer
      化学工学会第84年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 固定床反応器における酸触媒粒子によるアミン吸収液からのCO2放散促進効果2019

    • Author(s)
      北澤諒一, 嶋田五百里, 長田光正, 福長博, 高橋伸英
    • Organizer
      化学工学会第84年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Development of CO2 chemical absorption process using porous hollow fiber membranes2019

    • Author(s)
      Nobuhide Takahashi
    • Organizer
      The 9th Japan-China Symposium on Chemical Engineering
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Enhancement of CO2 desorption from amine absorbents by a membrane flash process using an alumina porous hollow fiber membrane2017

    • Author(s)
      Nobuhide Takahashi, Ayaka Yokomichi, Iori Shimada, Mitsumasa Osada, Hiroshi Fukunaga
    • Organizer
      4th Post Combustion Capture Conference (PCCC4)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 研究室ホームページ

    • URL

      http://www.fiber.shinshu-u.ac.jp/novhide-lab/Research.html

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
  • [Remarks] 研究室ホームページ

    • URL

      http://www.fiber.shinshu-u.ac.jp/novhide-lab/index.html

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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