Development of advanced air purification system by coupling ionic liquid electrospray with reactive plasma

• Project/Area Number: 16H04262
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Tohoku University
• Principal Investigator: Takana Hidemasa 東北大学, 流体科学研究所, 准教授 (40375118)
• Co-Investigator(Renkei-kenkyūsha): Takemura Kenjiro
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000); Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2017: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000); Fiscal Year 2016: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
• Keywords: イオン液体 / 静電噴霧 / 二酸化炭素分離吸収 / 気液混相流 / 機能性流体 / 電場 / 二酸化炭素吸収分離 / VOF法 / 大気環境浄化 / CO2吸収 / ナノ秒パルスプラズマ / 混相流 / 数値シミュレーション

Outline of Final Research Achievements

This study aims the establishment of innovative environmental purification system by integrating the cutting edge technologies of ionic liquid electrospray and nano second pulsed discharge. Ultra-fine droplet generation process with Taylor cone formation followed by break up of liquid thread during ionic liquid electrospray was clarified by computational simulations. The ionic liquid generation system for CO2 absorption was developed. The fluid dynamical characteristics of electrospray was clarified through high speed imaging and droplet size distribution analysis by light scattering method. Furthermore, it was successfully demonstrated that the amount of CO2 absorption clearly increases by ionic liquid electrospray even under low CO2 concentration conditions.

Academic Significance and Societal Importance of the Research Achievements

本研究により，イオン液体静電噴霧による高効率な二酸化炭素分離吸収法が確立され，得られた結果は，我が国における地球温暖化対策として大きな進展を与えるものである。また，本研究はこれまでの学術領域にとどまらず，流体工学及び化学工学を融合した新たな学理を構築するものであり，本研究は，新たな電磁混相流動学の研究領域を切り拓くという意味で学術的意義は大きい。

Research Products

• [Int'l Joint Research] ワシントン大学(米国)
• [Int'l Joint Research] ワシントン大学(米国)
• [Journal Article] イオン液体静電噴霧における液滴形成過程および噴霧特性の数値シミュレーション (2018)
  • Author(s): 川谷康二，高奈秀匡
  • Journal Title: 混相流 Volume: 32 Pages: 97-107
  • NAID: 130006731384
  • Peer Reviewed
• [Presentation] イオン液体静電噴霧による 高効率二酸化炭素分離吸収 (2019)
  • Author(s): 高奈秀匡
  • Organizer: JFPS機能性流体フルードパワーシステムに関する研究委員会
  • Invited
• [Presentation] Numerical Modeling on Enhancement of CO2 Absorption by Ionic Liquid Electrospray (2018)
  • Author(s): Hidemasa Takana
  • Organizer: 18th International Symposium on Advanced Fluid Information (AFI-2018)
  • Int'l Joint Research
• [Presentation] CO2 Absorption Separation Using Acetate-based Ionic Liquids (2018)
  • Author(s): Takashi Makino
  • Organizer: 15th International Conference on Flow Dynamics (ICFD2018)
  • Int'l Joint Research
• [Presentation] イオン液体静電噴霧の流体力学的特性解析と二酸化炭素分離吸収への応用 (2018)
  • Author(s): 高奈秀匡
  • Organizer: 第一回熱流体フォーラム
  • Invited
• [Presentation] Fundamental Characteristics of Ionic Liquid Electrospray and its Application to Energy and Environmental Technologies (2017)
  • Author(s): Hidemasa Takana
  • Organizer: Taiwan-Japan International Conference on Magnetic Fluids 2017 (TJ-ICMF2017)
  • Int'l Joint Research / Invited
• [Presentation] Experimental Analysis on Fluid Dynamical Characteristics of Ionic Liquid Electrospray (2017)
  • Author(s): Hidemasa Takana
  • Organizer: ９th JSME-KSME Thermal and Fluids Engineering Conference (TFEC9)
  • Int'l Joint Research
• [Presentation] Numerical Simulation on Droplet Ejection in Ionic Liquid Electrospray (2017)
  • Author(s): Koji Kawatani
  • Organizer: 9th JSME-KSME Thermal and Fluids Engineering Conference (TFEC9)
  • Int'l Joint Research
• [Presentation] Effect of Pulsed Voltage on Characteristics of Ionic Liquid Electrospray (2017)
  • Author(s): Hidemasa Takana
  • Organizer: 2017 Annual Meeting of the Electrostatics Society of America
  • Int'l Joint Research
• [Presentation] Experimental Study on Fundamental characteristics of ionic liquid electrospray (2017)
  • Author(s): Hidemasa Takana
  • Organizer: 2017UW-TU:AOS Workshop AOS-Fall 2017
  • Int'l Joint Research / Invited
• [Presentation] Dynamic Behavior of Microdrolet Ejection by Ionic Liquid Electrospray (2016)
  • Author(s): Hidemasa Takana and Koyo Saegusa
  • Organizer: 5th Asian-Pacific Conference on Ionic Liquids and Green Processes (APCIL-5)
  • Place of Presentation: 杭州，中国
  • Year and Date: 2016-10-26
  • Int'l Joint Research
• [Presentation] 静電混相流動における先端可視化解析 (2016)
  • Author(s): 高奈秀匡
  • Organizer: 日本機械学会年次大会2016
  • Place of Presentation: 九州大学（福岡県・福岡市）
  • Year and Date: 2016-09-11
  • Invited
• [Presentation] 静電混相流動制御法の確立と エネルギーおよび材料分野への応用展開 (2016)
  • Author(s): 高奈秀匡
  • Organizer: 磁性流体連合講演会
  • Place of Presentation: 北海道大学（北海道・札幌）
  • Invited
• [Remarks] 東北大学流体科学研究所 電磁機能流動研究分野 高奈研究室
  • URL: http://www.ifs.tohoku.ac.jp/takana/japanese.html
• [Remarks] 東北大学流体科学研究所電磁機能流動研究分野 高奈研究室
  • URL: http://www.ifs.tohoku.ac.jp/nishiyama-lab/japanese.html
• [Remarks] 研究室ホームページ
  • URL: http://www.ifs.tohoku.ac.jp/nishiyama-lab/japanese.html
• [Remarks] 流体科学研究所 研究者リレーインタビュー
  • URL: http://www.ifs.tohoku.ac.jp/jpn/zuihitu/file_30.html
• [Remarks] プラズマおよびイオン液体のエネルギー技術への応用展開
  • URL: http://www.jsme-fed.org/newsletters/2015_12/no4.html
• [Patent(Industrial Property Rights)] 酸性ガス分離装置及び酸性ガス分離方法 (2018)
  • Inventor(s): 高奈秀匡，山本和輝，原 望，金久保光央，牧野貴至
  • Industrial Property Rights Holder: 高奈秀匡，山本和輝，原 望，金久保光央，牧野貴至
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2018-060923
  • Filing Date: 2018