石油化工科学研究院研制开发的SKI 40 0 40型C8芳烃异构化催化剂 ,在扬子石油化工股份有限公司二甲苯异构化装置上替代SKI 30 0B ,在处理量增加 5 0 %、氢 /油比降低 5 0 %的苛刻条件下 ,具有良好的稳定性 ,对二甲苯和邻二甲苯的总收率大于 90 % ,经济效益超过 6 0 0 0万元 /a;对装置进行扩能改造时 ,主要设备不作改动 ,对二甲苯的年产量可由 45 0kt提高到 6 0 0kt,节省了巨额改造资金 The SKI 40 0 ​​40 type C8 aromatics isomerization catalyst developed by the Institute of Petrochemical Technology replaces SKI 30 0B in the xylene isomerization unit of Yangzi Petrochemical Co., Ltd. with an increase of 50% in throughput, hydrogen / oil Lower than 50% lower than the harsh conditions, has good stability, p-xylene and o-xylene total yield of more than 90%, the economic benefits of more than 60 million yuan / a; expansion of the device when the expansion , The main equipment will not be changed, the annual output of paraxylene can be increased from 450kt to 600kt, saving a huge amount of reforming funds