溶媒抽出によるコールタール留分の分離─第2の抽出による抽出物/溶媒成分の分離─ Separation of Coal Tar Fractions by Solvent Extraction—Extractant/Solvent Separation by Secondary Extraction—

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Author(s)

    • Salim Chris Salim Chris
    • Dept. of International Development Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
    • 斎藤 潤 Saito Jun
    • 東京工業大学大学院理工学研究科国際開発工学専攻 Dept. of International Development Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology
    • 江頭 竜一 Egashira Ryuichi
    • 東京工業大学大学院理工学研究科国際開発工学専攻 Dept. of International Development Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology

Abstract

コールタール留分であるタール軽油と吸収油の分離,また第2の油性溶媒による溶媒回収に溶媒抽出を適用した。この抽出プロセスで起こりうる様々な油相とメタノール水溶液相の系に関する液液平衡を測定した。測定した平衡関係に基づいて,一つの水溶性溶媒を用いて吸収油とタール軽油を同時に分離するプロセスを提案した。このプロセスでは,両原料は互いの分離における第2の油性溶媒でもある。メタノール水溶液を溶媒とした両原料の分離では,吸収油とタール軽油中に含まれる含窒素複素環式化合物は同素環式炭化水素や含酸素複素環式化合物などの他の化合物よりも優先的に抽出された。吸収油の分離における溶媒回収では,第2の油性溶媒としてタール軽油を用いて水溶性の抽出相を水溶性溶媒と抽出物に分離した。タール軽油の分離においては第2の油性溶媒として吸収油を用いた。成分の分配係数は系のコールタール留分の種類,また水溶液中に含まれる抽出物によって影響されなかった。すべての系において成分の分配係数は大きく三つのグループに分類して,単環の含窒素化合物,二環の含窒素化合物と炭化水素や含酸素化合物などの他の化合物という順であった。吸収油とタール軽油のそれぞれの分離プロセスを一つの水溶性溶媒による両コールタール留分の同時分離プロセスに統合することによって,それぞれの分離プロセスに必要な抽出装置と溶媒のいくつかが除去できる。 <br>

Solvent extraction was applied to the separation of tar light oil and absorption oil, and solvent recovery in the separation of these coal tar fractions by extraction with secondary oil solvent. The liquid-liquid equilibria were measured with various combinations of oil and aqueous methanol phases that occur throughout the whole extraction process. Based on the equilibrium results, a process separating absorption oil and tar light oil simultaneously with a single aqueous solvent is suggested, in which the two feed oils also act as secondary solvents for mutual separation. In the separation of feed oils by aqueous methanol solution as solvent, nitrogen heterocyclic compounds in the absorption oil and the tar light oil were extracted preferentially to other compounds including homocyclic hydrocarbons and oxygen heterocyclic compounds. In the solvent recovery in the separation of absorption oil, the aqueous extract phase containing aqueous solvent and extractants was separated by tar light oil as secondary oil solvent. In the solvent recovery in the separation of tar light oil, the aqueous extract phase was separated by absorption oil as the secondary oil solvent. The distribution coefficients were not affected by the type of oil phase of coal tar fraction and by the presence of the extractants in the aqueous phase. The distribution coefficients in all cases of oil phases of absorption oil and tar light oil could be classified into three groups: monocyclic nitrogen compounds, bicyclic nitrogen compounds, and other compounds including hydrocarbons and oxygen compounds. By integrating the two separation processes of absorption oil and tar light oil into one process separating both coal tar fractions simultaneously with a single aqueous solvent, several extractors and solvents required in the two separate processes can be eliminated.<br>

Journal

  • Journal of the Japan Petroleum Institute

    Journal of the Japan Petroleum Institute 48(1), 60-66, 2005

    The Japan Petroleum Institute

Cited by:  3

Codes

  • NII Article ID (NAID)
    130000065996
  • NII NACSIS-CAT ID (NCID)
    AA11590615
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    1346-8804
  • NDL Article ID
    7205454
  • NDL Source Classification
    ZP29(科学技術--化学・化学工業--燃料--石油)
  • NDL Call No.
    Z17-177
  • Data Source
    CJPref  NDL  J-STAGE 
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