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Received February 28, 2008
Accepted July 14, 2008
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접촉분해경유로부터 산화황화합물의 분리에 관한 추출용매의 영향
Effect of Extraction Solvent on the Separation of Sulfur Components in Light Cycle Oil
한국화학연구원 신화학연구단 석유대체연구센터, 305-606 대전시 유성구 장동 100번지 1서강대학교 화공생명공학과, 121-742 서울시 마포구 신수동 1
Alternative Chemicals/Fuel Research Center, New Chemistry Division, Korea Research Institute of Chemical Technology, Jang-dong 100, Yuseong-gu, Daejeon 305-606, Korea 1Department of Chemical & Biomolecular Engineering, Sogang University, 1, Sinsu-dong, Mapogu, Seoul 121-742, Korea
cukim@krict.re.kr
Korean Chemical Engineering Research, October 2008, 46(5), 965-970(6), NONE Epub 10 November 2008
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Abstract
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.
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.
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