两种甲苯歧化催化剂复合床的工业应用

某芳烃生产厂的甲苯歧化及烷基转移装置采用埃克森美孚公司的Transplus工艺技术及三床层复合体系EM-1100催化剂，平稳运行一年后，为了改善装置的灵活性，充分利用反应器内剩余的空间，在原有催化剂的顶层增添了40 t由中国石化上海石油化工研究院研制的HAT-099催化剂。通过对反应转化率、选择性、芳烃损失率及C₈芳烃产品品质的分析，考察这两种催化剂组成的复合床层在歧化装置上的使用性能。结果表明，两种催化剂复合使用的效果良好，在反应进料量不变的情况下，操作条件和主要性能指标有所改善。

COMMERCIAL APPLICATION OF COMPOSITE SYSTEM OF TWO KINDS OF TOLUENE DISPROPORTIONATION CATALYST

The toluene disproportionation and alkylbenzene transalkylation unit of a aromatics plant adopts ExxonMobil's Transplus technology and the three-bed catalyst EM-1100 system. After a year of stable running, in order to improve the flexibility of the plant and to make full use of the remaining space in the reactor, 40 t of HAT-099 catalysts developped by Shanghai Petrochemical Research Institute of SINOPEC were added to the top layer on the existing catalyst in the reactor. By analyzing the conversion, selectivity, aromatics loss rate and C₈ aromatics product quality, the performance of the two catalysts used in the disproportionation unit was investigated. The results show that the combined use of the two catalysts is effective, and the operating conditions and main performance indexes are improved under the condition of constant feed rate.