新型二甲苯异构化催化剂RIC-270的工业应用

Industrial application of new generation RIC-270 xylene isomerization catalyst

新型二甲苯异构化催化剂RIC-270是由中国石化石油化工科学研究院在RIC-200催化剂的基础上研制开发的,异构化活性、乙苯转化率和稳定性有所提高。RIC-270催化剂于2016年10月在中国石化天津分公司化工部大芳烃装置上进行工业应用,采用密相装填,催化剂上部采用新型软质密封材料RKJ-1型导流帽罩替代原不锈钢材质的折流挡板。工业标定数据表明,RIC-270催化剂在保持高异构化活性的前提下,乙苯转化能力明显提高,乙苯平衡达成率达80%以上,C_8芳烃损失仅为2.2%,说明RIC-270催化剂的性能有新的突破,密相装填和RKJ-1型导流帽罩效果良好。

A new type RIC-270 xylene isomerization catalyst has developed successfully on the basis of RIC-200 catalyst by RIPP. Its isomerization activity, ethylbenzene conversion and stability are improved. The industrial application of the RIC-270 catalyst was carried out on the BPX aromatics plant of Tianjin branch company of Sinopec in October 2016. Catalyst was loaded by density loading method, a new type RKJ- 1 soft diversion cap cover was used on the catalyst bed top instead of the stainless steel material distributing baffle. The industrial application test results indicated that the ethylbenzene conversion ability of RIC-270 catalyst was improved obviously under the premise of maintaining high isomerization activity, the ethylbenzene approach to equilibrium rate is more than 80%, and C8 aromatics loss rate is only 2.2%. The results show that the performance of RIC-270 catalyst has a new breakthrough. The effect of density loading and RKJ- 1 type soft diversion cap cover is very good.