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DYNAMIC MICROFILTRATION OF HIGH VISCOSITY SURRIES CONTAINING ULTRAFINE SUSPENDED SOLIDS

Research Project

Project/Area Number 07650891
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 化学工学一般
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

MURASE Toshiro  NAGOYA UNIVERSITY,CHEMICAL ENGINEERING,PROFESSOR, 工学部, 教授 (70023067)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1996: ¥100,000 (Direct Cost: ¥100,000)
Fiscal Year 1995: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsUltrafine suspensoids / High viscosity slurry / Dynamic microfiltration / 精密ダイナミツク濾過 / ダイナミツク濾過
Research Abstract

The dynamic microfiltration mechanisms of the solid-liquid mixtures producing highly compressibie cake and/or highly viscous filtrate were analyzed for both rotating-and crossflow-membrane filtration. A basis for the design and evaluation of high flux filtration was proposed based on the fact that due to a powerful sweeping force acting on fouling-layr, the dynamic effects yield remarkable improvements in the filtration rate of poorly separable systems containing superfine suspensoids.
1) The high compressibility of a fouling layr composed of oil droplets exerts a great influence on the sweeping away of the layr and complicates the flux decline in response to different conditions of operation. These cake compressibility effects can be evaluated if one considers that the steady-state flux depends both on the shear stress acting on the thin-cake as well as on the coefficient of constant pressure filtration. Such compressibility effects are also a serious constraint in the analysis of the … More dynamic filtration performance of solid-liqiud slurry.
2) The dead-end microfiltration characteristics with the O/W emulsion containing submicron suspended solids depend heavily on the marked changes in cake compressibility due to different oil and/or solid contents. The empirical method proposed here allows the estimation of the relationships between the optimum filtration conditions and the solid contents keeping the filtrate flux at a maximum.
The high gradient magnetic settling behaviors of magnetic suspended solids can be analyzed by defining a controlling parameter composed of the strength of the magnetic field and the magnetization of the solids. The high magnetism created by a fine-sized solids layr on the mangetic element enhances the removal of suspensoids from slurry fed at a fairly high rate.
The rotating cylinder dynamic filtration with an additional particle bed in its filter chamber yields much smaller hydraulic cake-resistance than that encountered in traditional operations. The results may be efficient as a basis for the design of high rate microfiltration. Less

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 村瀬 敏朗: "回転円筒型ダイナミックフィルターにおる希薄なO/Wエマルションの精密濾過" 化学工学論文集. 22巻・1号. 120-126 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Toshiro MURASE: "Separation of Dilute Slurry in Horizontal Flow Type of A High Gradient Magnetic Settler" Proc. of the 7th World Filtration Congress (Budapest). vol. 2. 802-806 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 村瀬 敏朗: "懸濁質を含む油水エマルションの低圧精密濾過特性" 化学工学第29回秋季大会要旨集. 第3分冊. (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Toshiro MURASE: "New Decline Pattern of Filteate Flux in Cross-Flow Microfiltration of Dilute Suspension" AIChE Journal. vol. 42. No. 7. 1938-1944 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 村瀬 敏朗: "添加懸濁質層をもつ回転円筒ダイナミックフィルターによるO/Wエマルションの高速精密濾過" 化学工学論文集. 23巻・3号. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Murase, T.Ohn, K.Kamimura: "Dynamic Microfiltration of Dilute O/W Emulsion in Rotating Cylindrical Membrane Filter" Kagaku Kogaku Ronbunshu. 22-1. 120-126 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Murase, M.Takizuka, H.Watanabe: "Separation of Dilute slurry in Horizontal Flow Type of A High Gradient Magnetic Settler" Proc.of the 7th World Congress (Budapest). 1. 802-806 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Murase, Y.Ikuhisa: "Constant Pressure Dead-End Microfiltration of O/W Emulsion Containing Suspensoids" Proc.of the 29th Autumn Meeting, Soc.Chem.Eng.Japan. 3. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Murase, T.Ohn: "New Decline Pattern of Filtrate Flux in Cross-Flow Mecrofiltration of Dilute Suspension" AIChE Journal. 42-7. 1938-1944 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Murase, A.W.Yosufu: "Microfiltration-Rate Increase of O/W Emulsion by Use of Rotating Membrane Filter with Additional Suspended Solids" Kagaku Kogaku Ronbunshu. 23-3. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 村瀬俊朗: "回転円筒型ダイナミツクフィルターにおける希薄なO/Wエマルションの精密濾過" 化学工学論文集. 22巻・1号. 120-126 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Toshiro MURASE: "Separation of Dilute Slurry in Horizontal Flow Type of A High Gradient Magnetic Settler" Proc.of the 7th World Filtration Congress (Budapest). Vol.2. 802-806 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 村瀬俊朗: "懸濁質を含む油水エマルションの定圧精密濾過特性" 化学工学第29回秋季大会要旨集. 第3分冊. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Toshiro MURASE: "New Decline Pattern of Filtrate Flux in Cross-Flow Microfiltration of Dilute Suspension" AIChE Journal. Vol.42,No.7. 1938-1944 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 村瀬俊朗: "添加懸濁質層をもつ回転円筒ダイナミツクフィルターによるO/Wエマルションの高速精密濾過" 化学工学論文集. 23巻・3号. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 村瀬敏朗: "油水系エマルションの精密濾過特性に及ぼすダイナミツク濾過条件の影響" 化学工学会・第61年会講演要旨集. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Toshiro MURASE: "Time Dependence of Filtration Resistance in Dynamic Microfiltration" Proceeding of the 7th World Filtration Congress. (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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