费-托合成蜡加氢异构生产的 APIⅢ类基础油低温性能研究

STUDY ON LOW TEMPERATURE PROPERTY OF API Ⅲ BASE OIL PRODUCT FROM HYDROISOMERIZATION OF FISCHER-TROPSCH SYNTHETIC WAX

基于工业生产APIⅡ类润滑油基础油的加氢异构/加氢精制工艺及参数,以及适宜加工费-托合成蜡为原料的催化剂,在200 mL加氢中试装置上进行了费-托合成蜡为原料和工艺参数对APIⅢ类5cSt润滑油基础油浊点和倾点的影响研究。结果表明:高异构化反应温度、低异构化反应压力以及低碳数的费-托合成蜡为原料,均有助于5cSt润滑油基础油浊点和倾点的降低;以碳数大于40的烃类比例不超过0.5%的费-托合成蜡为原料时,在压力2.5 MPa、温度348℃的异构化反应条件下,5cSt润滑油基础油的浊点和倾点分别不高于-15℃和-30℃,黏度指数不低于135,收率不低于30%。

Based on the process and parameters of the hydroisomerization/hydrofining in industrial production of APIⅡbase oil and catalysts suitable for the processing of Fischer-Tropsch synthetic wax,the influence of Fischer-Tropsch synthetic wax as raw material and process parameters on the cloud point and pour point of APIⅢ5cSt base oil were studied in the 200 mL hydrogenation pilot plant.The results showed that high hydroisomerization temperature,low hydroisomerization pressure and low carbon number of Fischer-Tropsch synthetic wax could reduce the cloud point and pour point of 5cSt base oil.When Fischer-Tropsch synthetic wax was used as raw material,the proportion of hydrocarbons with carbon number more than 40 did not exceed 0.5%,the isomerization pressure was 2.5 MPa,and the temperature was 348℃,the cloud point and pour point of 5cSt base oil were not higher than-15℃and-30℃respectively,the viscosity index was not lower than 135,and the yield was not lower than 30%.