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Development of plasma installed cyclone for size-selective particle treatment

Research Project

Project/Area Number 19H02494
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 27010:Transport phenomena and unit operations-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Sekiguchi Hidetoshi  東京工業大学, 物質理工学院, 教授 (50226643)

Co-Investigator(Kenkyū-buntansha) 小玉 聡  東京工業大学, 物質理工学院, 助教 (90589417)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywordsサイクロン / プラスマ / 粒子処理 / プラズマ
Outline of Research at the Start

この研究では、伝統的な固気分離装置であるサイクロン内の特定の位置に特性の異なるプラズマを導入し、プラズマ中に存在する高エネルギー電子や活性種による粒子表面への化学的修飾、さらにはプラズマ下流に導入するミストや反応性ガスとの表面反応による機能性付与を通して、サイクロンによる粒径選択性を活かした革新的な粒子処理プロセスの開発を行う。

Outline of Final Research Achievements

The objective of this study was to develop a particle treatment system with size selectivity by introducing plasma into a cyclone, which is a solid-gas separation device. Polyethylene particles were treated by the cyclone fabricated with a 3D printer based on 3D numerical fluid dynamics calculations including particle behavior. The plasma was generated at the specific location in the cyclone where particles with specific sizes were supposed to pass through. As a result, only particles with diameters of 5 to 10 μm were spheronized, indicating the size selectivity of the treatment. Furthermore, when the relationship between the cyclone inlet and plasma position was changed, the amount of the treatment decreased significantly, indicating that the selectivity depended on the plasma position. It was concluded that the plasma cyclone proposed here is a novel particle treatment system with size selectivity.

Academic Significance and Societal Importance of the Research Achievements

この研究では、伝統的な固気分離装置であるサイクロンにプラズマを導入することで、特定の粒径の粒子のみをプラズマで処理することに成功した。学術的な面では、流体解析とこれを元にした装置設計、そして実験とプラズマ観察等により、粒子プロセッシング場として重要な基礎的知見を得ることができた。一方、社会的な面では、この革新的な装置により、粒径選択性というサイクロンの特長と、プラズマ中の高エネルギー電子や活性種による処理というプラズマの特長を共に活かした革新的な粒子処理プロセスが実現され、得られた知見と成果は、粉体プロセッシングにおけるプラズマ利用の新たな展開の起点になるといえる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (3 results)

All 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] 仁荷大学(韓国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Size-Selective Treatment of Polypropylene Particles in a Plasma Cyclone Reactor2020

    • Author(s)
      Sekiguchi H.、Kodama S.、Ishikawa K.、Miyazaki K.
    • Journal Title

      IOP Conference Series: Materials Science and Engineering

      Volume: 778 Issue: 1 Pages: 012057-012057

    • DOI

      10.1088/1757-899x/778/1/012057

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Size-Selective Treatment of Polypropylene Particles in a Plasma Cyclone Reactor2019

    • Author(s)
      H. Sekiguchi, S. Kodama, K. Ishikawa, K. Miyazaki
    • Organizer
      26th Regional Symposium on Chemical Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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