润滑油糠醛抽提塔理论板数的实验标定

采用多级静态萃取模拟的方法对大连石化公司润滑油糠醛精制抽提塔的理论板数进行标定。结果表明，该抽提塔的理论板数为2—3块，在操作条件不变的情况下，现有糠醛抽提塔至少要4块理论板才能使基础油的酸值符合要求。采用具有4块理论板的中试装置对标定结果进行了实验验证，在与工业装置相当的操作条件下，精制油收率为76．0％，黏度指数为106，酸值为0．0174mg（KOH）／g，产品质量能够满足HVl400SN润滑油基础油质量要求。

The Experimental Calibration on Theoretical Plate Number of Furfural Extraction Column

For the furfural extraction column of Chinese Dalian petrochemical company, the calibration on its number of theoretical plates was done by using the method of multi stage static extraction simulation. The results show that the theoretical plate number in the column wad 2 to 3 blocks. If operation conditions of the plant remained unchanged, at least four theoretical plates will be needed for the existing furfural extraction column to produce lubricating base oil meeting the quality requirement of acid value. The Pilot plant with four theoretical plates was used to verify the results. Under the operating conditions equivalent to that of the industrial plant, the yield of refined oil is 76%, viscosity index is 106, and acid value is 0. 017 4 mg （KOH） /g, meeting quality specification of HVI400SN lubricant base oil.