Development of centrifugal extractor with Taylor vortices for liquid-liquid and liquid-solid nuclide separation systems

• Project/Area Number: 25289352
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear engineering
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Takeshita Kenji 東京工業大学, 原子炉工学研究所, 教授 (80282870)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2013: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
• Keywords: 抽出 / 連続抽出 / 向流操作 / テーラー渦 / 油水分散 / 多段抽出 / エマルジョン / 界面活性 / 抽出装置 / 遠心抽出装置 / 連続多段抽出 / 分離プロセス / 油水向流 / 核種分離 / 装置形状 / 逆抽出 / 協同抽出

Outline of Final Research Achievements

To recover valuable metals such as Lanthanides and PGMs from HLW, a liquid-liquid countercurrent centrifugal extractor which can induce Taylor vortices has been developed. Following conclusions were obtained. ① Oil-water dispersion behavior has an important role for the extraction and separation behaviors with multiple theoretical stages. ② Both fast extraction kinetics and effective dispersion behavior are needed for the stable extraction operation with high theoretical stages. ③ The improvement of chemical properties and extraction mechanism by the addition of small amount of chemical agents such as surfactant and synergist is effective for the increase of theoretical stages. ④ Back extraction is attained easily by the proposed centrifugal extractor. ⑤ Excellent oil-water dispersion formed in a tapered fluid region is useful for the increase of theoretical stages.

Research Products

• [Journal Article] Synergistic extraction of lanthanides in a liquid-liquid countercurrent centrifugal extractor (2014)
  • Author(s): Masahiko Nakase, Yuji Sasaki, Kenji Takeshita
  • Journal Title: Separation Science and Technology Volume: 49 Issue: 16 Pages: 2478-2484
  • DOI: 10.1080/01496395.2014.937814
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Multi-staging for extraction of cesium from nitric acid by a single liquid -liquid countercurrent centrifugal extractor with Taylor vortices (2013)
  • Author(s): M.Nakase, H.Kinuhata and K.Takeshita,
  • Journal Title: Journal of Nuclear Science and Technology Volume: 50 Issue: 11 Pages: 1089-1098
  • DOI: 10.1080/00223131.2013.835248
  • Peer Reviewed
• [Journal Article] High-performance extraction operation using emulsion flow protected by surfactants in a liqui; liquid countercurrent centrifugal extractor (2013)
  • Author(s): M.Nakase, H.Rokkaku and K.Takeshita
  • Journal Title: Journal of Nuclear Science and Technology Volume: 50 Issue: 7 Pages: 723-730
  • DOI: 10.1080/00223131.2013.799399
  • Peer Reviewed
• [Journal Article] Relation between oil-water flow and extraction performance in liquid-liquid counter-current centrifugal extractors with Taylor vortices (2013)
  • Author(s): M.Nakase and K.Takeshita
  • Journal Title: Journal of Nuclear Science and Technology Volume: 50 Issue: 3 Pages: 288-294
  • DOI: 10.1080/00223131.2013.772445
  • Peer Reviewed
• [Presentation] テーラー渦誘起型遠心抽出器による希土類元素の多成分抽出 (2016)
  • Author(s): 竹下 健二、中瀬正彦
  • Organizer: 化学工学会 第48回秋季大会
  • Place of Presentation: 徳島大学
  • Year and Date: 2016-09-06
• [Presentation] テーラー渦誘起型遠心抽出器における分離段評価 (2016)
  • Author(s): 竹下健二、中瀬正彦
  • Organizer: 化学工学会 第48回秋季大会
  • Place of Presentation: 徳島大学
  • Year and Date: 2016-09-06
• [Presentation] テーラー渦誘起型遠心抽出器を用いたMo の分離プロセスの開発 (2015)
  • Author(s): 松澤侑人, 竹下健二
  • Organizer: 日本原子力学会 2015年春の年会
  • Place of Presentation: 茨城大学（茨城県日立市）
  • Year and Date: 2015-03-20 – 2015-03-22
• [Presentation] テーラー渦誘起型遠心抽出器を用いた D2EHPA によるY/Fe およびY/Ho の連続抽出分離 (2014)
  • Author(s): 松澤侑人, 小薗俊介, 竹下健二
  • Organizer: 日本溶媒抽出学会 第33回溶媒抽出討論会
  • Place of Presentation: ホテルプラザ神戸（兵庫県神戸市）
  • Year and Date: 2014-12-10 – 2014-12-11
• [Presentation] テーラ渦誘起型液々向流抽出器における多成分連続離 テーラ渦誘起型液々向流抽出器における多成分連続離 (2014)
  • Author(s): 松澤侑人, 竹下健二
  • Organizer: 日本原子力学会 2014年秋の大会
  • Place of Presentation: 東京都市大学（東京都世田谷区）
  • Year and Date: 2014-09-08 – 2014-09-10
• [Presentation] テーラー渦誘起型遠心抽出器の多段抽出挙動に及ぼす流路形状の効果 (1)分散流動と単成分抽出挙動 (2014)
  • Author(s): 松澤侑人, 中瀬正彦,竹下健二,田中幹也
  • Organizer: 日本原子力学会 2014春の大会
  • Place of Presentation: 東京都市大学（日本）
• [Presentation] テーラー渦誘起型遠心抽出器の多段抽出挙動に及ぼす流路形状の効果 (2) 多化学種抽出分離挙動 (2014)
  • Author(s): 中瀬正彦, 松澤侑人, 竹下健二, 田中幹也
  • Organizer: 日本原子力学会 2014春の大会
  • Place of Presentation: 東京都市大学（日本）
• [Presentation] Continuous back extraction operation by a single liquid-liquid centrifugal extractor (2013)
  • Author(s): M.Nakase and K.Takeshita
  • Organizer: GLOBAL2013
  • Place of Presentation: Salt Lake City（米国）
• [Presentation] Continuous mutual separation of lanthanides based on the difference in extraction rates by a liquid-liquid centrifugal extractor with Taylor vortices (2013)
  • Author(s): M.Nakase, M.Tanaka and K.Takeshita
  • Organizer: The Forth International Symposium on Innovative Nuclear Systems
  • Place of Presentation: 東京工業大学（日本）
• [Presentation] テーラー渦誘起型遠心抽出器を用いた多種金属連続相互分離に及ぼす添加試薬の効果 (2013)
  • Author(s): 中瀬正彦, 佐々木祐二, 竹下健二
  • Organizer: 日本原子力学会 2013秋の大会
  • Place of Presentation: 八戸工業大学（日本）
• [Presentation] 様々な幾何体系の液々向流型遠心抽出器内油水分散流動解析とダイナミック可視化 (2013)
  • Author(s): 中瀬正彦, 竹下健二
  • Organizer: 混相流シンポジウム2013
  • Place of Presentation: 信州大学（日本）
• [Remarks] http://www.lane.iir.titech.ac.jp/~takeshita/
• [Remarks] http://www.ssr.titech.ac.jp/nfcycle/
• [Remarks] 竹下研究室
  • URL: http://www.nr.titech.ac.jp/~takeshita/
• [Remarks] 竹下研究室
  • URL: http://www.nr.titech.ac.jp/~takeshita/