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HWAHAK KONGHAK,
Vol.36, No.4, 584-587, 1998
Vol.36, No.4, 584-587, 1998
폐윤활유의 재활용을 위한 초임계유체의 추출
Supercritical Fluid Extraction for Reuse of Waste Lube Oil
초임계상태의 프로판을 추출용매로 사용하여 폐윤활유의 재활용에 관한 실험을 실시하였다. 본 실험실에서 제작한 유통형의 초임계 추출장치를 사용하여 폐윤활유에 대한 프로판의 공급비(용매무게비)를 변화시키면서 폐윤활유 중 윤활유 성분을 추출하였다. 프로판의 초임계상태인 150℃와 10MPa의 일정한 추출조건에서 추출된 재생윤활유의 회수율은 최대 85%이며 기초실험에서 얻은 결과와 거의 일치한다. 회수된 재생윤활유의 성상과 물성을 측정하고 용매무게비에 대한 영향을 검토하였다.
The experimental study for reuse of waste lubricating oil was carried out, by using flow-type apparatus newly manufactured for supercritical propane extraction. The weight ratio of solvent and waste lube oil was changed between 1.5 and 19. The recovered lube oil extracted under the supercritical condition of 150℃ and 10MPa was ca. 85% of the waste oil, that was good agreement with the results of our previous work. The physical properties and contents of impurities in the recovered lube oil were measured according to ASTM and the relation between weight ratio or solvent and removal of impurities was discussed.
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