Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Effect of Extraction Solvent on the Separation of Sulfur Components in Light Cycle Oil

접촉분해경유로부터 산화황화합물의 분리에 관한 추출용매의 영향

  • Park, Su-Jin (Alternative Chemicals/Fuel Research Center, New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Jeong, Kwang-Eun (Alternative Chemicals/Fuel Research Center, New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Chae, Ho-Jeong (Alternative Chemicals/Fuel Research Center, New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Chul-Ung (Alternative Chemicals/Fuel Research Center, New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Jeong, Soon-Yong (Alternative Chemicals/Fuel Research Center, New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Koo, Kee-Kahb (Department of Chemical & Biomolecular Engineering, Sogang University)
  • 박수진 (한국화학연구원 신화학연구단 석유대체연구센터) ;
  • 정광은 (한국화학연구원 신화학연구단 석유대체연구센터) ;
  • 채호정 (한국화학연구원 신화학연구단 석유대체연구센터) ;
  • 김철웅 (한국화학연구원 신화학연구단 석유대체연구센터) ;
  • 정순용 (한국화학연구원 신화학연구단 석유대체연구센터) ;
  • 구기갑 (서강대학교 화공생명공학과)
  • Received : 2008.02.28
  • Accepted : 2008.07.14
  • Published : 2008.10.31
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Abstract

The separation of sulfone components using light cycle oil(LCO) after oxidation was carried out by solvent extraction method using various polar solvents such as water, n-methyl-2-pyrrolidone(NMP), dimethyl sulfoxide, ethyl acetate, acetonitrile, dimethyl formamide, and methyl alcohol. It was found that phase separation between LCO layer and solvent occurred under mixed solvent adding a proper amount of water. The mixture solvent of NMP and water was a promising extraction solvent due to the selective removal and high distribution coefficient of sulfone component in LCO. 99.5% over of sulfur contents in LCO can be removed by 4 stages equilibrium extraction.

접촉분해경유의 산화반응후 포함된 산화황화합물을 분리하기위해 다양한 용매를 사용하여 용매추출에 관한 연구를 수행하였다. 용매로는 극성을 가진 물, N-메틸피놀리논, 에틸아세테이트, 디메틸포름아마이드, 이소프로필알코올, 아세토니트릴, 메탄올등을 사용하였다. 실험결과, 접촉분해경유와 용매와의 층분리는 적절한 양의 물을 첨가한 경우에 이루어졌으며, 물과 N-메틸피놀리논을 혼합한 혼합용매가 접촉분해경유로부터 산화황화합물의 선택적인 분리에 가장 적절하였다. 또한 접촉분해경유로부터 황화합물을 99.5% 이상으로 제거하기 위해선, 4단 정도의 평형추출이 필요하였다.

Keywords

References

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