Abstract: Single stage refining and simulating three stages refining with furfural and N-methyl-2- pyrrolidone were carried out using vacuum gas oil (VGO) blended with Daqing and Shenbei oil as raw material.The optimum operation conditions were determined under the requirement about HVI500SN,and the experimental results were analyzed contrastively.The results show that when NMP refining is compared with furfural refining under the circumstance of the same refining effect,the refining temperature is decreased by 20℃,the mass ratio of solvent to oil is decreased by 40%,and the yield of refined oil is increased by 3% ,which show NMP refining is superior to furfural refining.

Key words: Lubricant , N-methyl-2-pyrrolidone , Furfural , Vacuum gas oil

摘要： 以大庆、沈北混合高粘度润滑油馏分油为原料,分别进行了糠醛、NMP精制的单级抽提试验和假三段抽提试验,在满足HVI500SN要求下,确定了适宜的操作条件,并对试验结果进行了对比分析。结果表明,在精制深度相当的条件下,无论单级还是假三段抽提试验,NMP精制与糠醛精制相比,精制温度降低了20 ℃、剂油体积比下降了40%,油收率提高了3%。以上结果表明,对于高粘度馏油,NMP作为抽提溶剂明显要优于糠醛。

关键词: 润滑油 , N-甲基吡咯烷酮 , 糠醛 , 减压馏分油