脱蜡助剂对加氢处理油溶剂脱蜡助滤效果的评价

以兰炼加氢处理的125N、200N、400N及120BS润滑油基础油为原料，对不同相对分子质量的聚烯烃／聚丙烯酸脱蜡助剂DEW－6、DEW－7、DEW－8的脱蜡助滤效果在实验室进行了评价。评选工艺采用关键单元的间歇式过程。试验结果表明，对于125N，DEW－6加剂量为0．05％时，过滤速度提高60％－80％，油收率提高5个百分点，蜡含油降低70％；对于200N，DEW－7加剂量为0．01％时，过滤速度能提高50％，油收率提高5个百分点，蜡含油降低30％；对于400N，DEW－7加剂量为0．09％时，过滤速度能提高150％，油收率提高10个百分点，蜡含油降低30％、对于120BS，DEW－8加剂量为0．09％时，过滤速度提高60％，油收率提高3个百分点，蜡含油降低30％。

EVALUATION OF FILTRATION EFFECT OF DEWAXING AIDS ON SOLVENT DEWAXING OF HYDROTREATED LUBE BASE OILS

Using the hydrotreated lube base oils of 125N, 200N, 400N and 120BS from Lanzhou Petroleum Refining and Petrochemical Company as feedstocks, the filtration effects of polyolefin/polypropylene-acid-ester dewaxing aids having different relative molecular masses with designations of DEW-6, DEW-7 and DEWo8 were evaluated in the laboratory. DEW-6 at a dosage of 0.05% and DEW-8 at a dosage of 0.09% were added to 125N and 120BS oils respectively; and DEW-7 was added to 200N and 400N oils at a dosage of 0.01% and 0.09% respectively. The results showed that for 125N, 200N, 400N and 120BS oils, the filtration rates enhanced by 60%-80%, 50%, 150% and 60% respectively; the dewaxed oil yields increased by 5, 5, 10 and 3 percentages respec tively; and oil in wax decreased by 70%, 30%, 30% and 30% respectively.