Abstract: Taking hydrocracking tail oil from a refinery of CNOOC as raw material,isomerization dewaxing and supplementary refining test are performed over the catalyst in service to investigate the feasibility of producing high-grade lubricating base oil,cosmetic-grade white oil and food-grade white oil at different reaction temperatures.The results show that the base oil with high viscosity index (>100) and qualified pour point cannot be prepared at any reaction temperatures.The distillate at 300-380℃ (a yield of 18.48%) and the distillate exceeding 380℃ (a yield of 36.79%) can respectively meet the product index requirements of food-grade white oil (GB 1886.215—2016) and cosmetics-grade white oil (NB/SH 0007—2015) when reaction pressure is 15 MPa,space velocity is 1.0 h-1,the ratio hydrogen to oil is 800:1 and the temperatures of isomerization dewaxing and supplementary refining sections are 330℃ and 240℃,respectively.
许海龙, 徐岩峰, 张翠侦, 宋君辉. 加氢裂化尾油异构脱蜡-补充精制产品探索研究[J]. 现代化工, 2021, 41(5): 208-211,216.
XU Hai-long, XU Yan-feng, ZHANG Cui-zhen, SONG Jun-hui. Exploration research on products by isomeric dewaxing-supplementary refining of hydrocracking tail oil. Modern Chemical Industry, 2021, 41(5): 208-211,216.