CAJ | 학술논문

以环己烷-异丙醇混合溶剂为萃取剂、KOH溶液为絮凝剂，采用萃取-絮凝的方法回收废润滑油中的基础油馏分。经实验研究确定最佳工艺条件为：环己烷与异丙醇的质量比1∶2，KOH质量分数15％，有机溶剂与KOH溶液的质量比7∶1，剂油质量比2∶1，精制温度45℃，精制时间30 min。在此条件下对废润滑油进行精制，再生油的收率为83.4％，其颜色为澄清淡黄色，与废润滑油相比，再生油的性能指标有了很大的改善，基本达到 HVI150润滑油基础油性能指标要求。
이배기완-이병순혼합용제위췌취제、KOH용액위서응제，채용췌취-서응적방법회수폐윤활유중적기출유류분。경실험연구학정최가공예조건위：배기완여이병순적질량비1∶2，KOH질량분수15％，유궤용제여KOH용액적질량비7∶1，제유질량비2∶1，정제온도45℃，정제시간30 min。재차조건하대폐윤활유진행정제，재생유적수솔위83.4％，기안색위징청담황색，여폐윤활유상비，재생유적성능지표유료흔대적개선，기본체도 HVI150윤활유기출유성능지표요구。
By extraction-flocculation combined process,the regeneration of waste lubricate oil was investigated using cyclohexane-isopropanol mixed solvent as extraction agent and KOH solution as floc-culant.The base oil fractions in the feed were recovered at the optimal process conditions:cyclohexane to isopropanol ratio of 1∶2,KOH solution concentration of 15%,KOH solution to organic solvents ra-tio of 7∶1,solvent to oil ratio of 2∶1,refining temperature of 45 ℃,refining time of 30 min,and the base oil yield is 83.4%.The regenerated lubricating oil is clear light yellow in color,the viscosities at 40 ℃ and 100 ℃ are 17.58 mm2?s and 4.11 mm2?s,respectively.The base oil has the viscosity index of 139,the acid value of 0.023 4 mgKOH?g,flash point of 234 ℃,and the solidifying point of -17 ℃.The performance index of the reclaimed oil is dramatically improved.