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Innovative CO2 Capture TSA with Direct Thermal Conduction Heating Adsorber

Research Project

Project/Area Number 21H03631
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 64020:Environmental load reduction and remediation-related
Research InstitutionKanazawa University

Principal Investigator

Kodama Akio  金沢大学, 新学術創成研究機構, 教授 (30274690)

Co-Investigator(Kenkyū-buntansha) 汲田 幹夫  金沢大学, フロンティア工学系, 教授 (60262557)
大坂 侑吾  金沢大学, 機械工学系, 准教授 (70586297)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Keywords吸着 / 二酸化炭素 / 廃熱利用 / 水蒸気
Outline of Research at the Start

吸着材の直接熱伝導加熱を可能とする内部熱交換型温度スイング吸着操作を確立し,加熱空気再生型のTSA操作では成し得なかった低温度再生による強吸着質CO2の高濃縮回収を実現する。また,吸着材層の熱応答性向上により,吸脱着サイクル時間の短縮,すなわち装置の小型化を推進し,小規模CO2排出源への適用も容易とする。この目的達成のため,1.内部熱交換型吸着塔内で生じる熱と物質の同時移動現象の可視化およびCO2と共存水蒸気の競合吸着現象の解明,2.吸着材充填層の伝熱性向上と最適な吸着材特性の検討を通じた内部熱交換型吸着塔の最適化,3.プロセス設計・操作指針の基盤構築に取り組む。

Outline of Final Research Achievements

An internally heated and cooled temperature swing adsorption process that can be driven by low-temperature waste heat below 100°C has been developed to contribute to CO2 emissions reduction. To improve the thermal response of the adsorbent bed, the adsorbent was applied directly to the heat exchanger, and better CO2 concentration and capture performance than the adsorbent-filled type was obtained.
A two-stage adsorption process using an adsorbent-filled adsorption column was tested, and the concentration of CO2 recovered reached 95%.
Molecular sieve carbon CMS, a hydrophobic adsorbent, is less effective than zeolite in CO2 selectivity and adsorption capacity, but its separation and concentration performance is almost equal in wet gas at 70% relative humidity.

Academic Significance and Societal Importance of the Research Achievements

本研究は,内部熱交換型吸着塔の高度化によって,排出二酸化炭素の効率的な濃縮回収技術を提供するものであり,カーボンニュートラルへの実現ひいては地球温暖化の抑制への貢献を第一義とする。研究成果は温度スイング吸着TSAの吸着速度差分離型への展開も後押しする。これによりTSAが適用できる分離対象が拡大し,低温廃熱利用もさらに促進される。さらに,内部熱交換型吸着塔では吸着材の温度制御が可能であり,温度によって吸着材特性が大きく変わる新規吸着材活用の学術的基盤の創造にもつながる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (8 results)

All 2024 2023 2022 2021 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (3 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] The efficacy of CO2 separation from a simulated wet flue gas by a thermally regenerative carbon molecular sieve or solid amine packed in a heat exchanger2024

    • Author(s)
      Heak Vannak, Yugo Osaka, Takuya Tsujiguchi, Akio Kodama
    • Journal Title

      Applied Thermal Engineering

      Volume: 239 Pages: 122145-122145

    • DOI

      10.1016/j.applthermaleng.2023.122145

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Zeolite-coated fin-coil heat exchanger for CO2 recovery from simulated dry flue gas via low-temperature-heat-driven TSA2023

    • Author(s)
      Heak Vannak, Yugo Osaka, Takuya Tsujiguchi, Akio Kodama
    • Journal Title

      Separation and Purification Technology

      Volume: 325 Pages: 124688-124688

    • DOI

      10.1016/j.seppur.2023.124688

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-purity CO2 recovery following two-stage temperature swing adsorption using an internally heated and cooled adsorber2023

    • Author(s)
      Masuda, S., Osaka, Y., Tsujiguchi, T., Kodama, A.
    • Journal Title

      Separation and Purification Technology

      Volume: 30915 Pages: 123062-123062

    • DOI

      10.1016/j.seppur.2022.123062

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Carbon dioxide recovery from a simulated dry exhaust gas by an internally heated and cooled temperature swing adsorption packed with a typical hydrophobic adsorbent2022

    • Author(s)
      MASUDA, S., OSAKA, Y., TSUJIGUCHI, T., KODAMA, A.
    • Journal Title

      Separation and Purification Technology

      Volume: 284 Pages: 120249-120249

    • DOI

      10.1016/j.seppur.2021.120249

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] 廃熱駆動型温度スイング吸着の高度化によるカーボンニュートラル実現への貢献2023

    • Author(s)
      児玉昭雄
    • Organizer
      2023 年度ゼオライトフォーラム
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 内部熱交換型温度スイング吸着による疑似排ガスからのCO2濃縮回収2023

    • Author(s)
      木倉範之,大坂侑吾,辻口拓也,児玉昭雄
    • Organizer
      化学工学会第54回秋季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 内部熱交換型温度スイング吸着プロセスによるCO2の濃縮回収2021

    • Author(s)
      田中 雄規、児玉 昭雄、大坂 侑吾、辻口 拓也
    • Organizer
      第34回日本吸着学会研究発表会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 金沢大学新学術創成研究機構 炭素循環・エネルギープロセスユニット

    • URL

      https://infiniti.adm.kanazawa-u.ac.jp/core/mirai06.php

    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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