Abstract: In order to make full use of toluene and heavy aromatics resources and increase C8 aromatics production, a new catalyst HAT-300 developed by SINOPEC Shanghai Research Institute of Petrochemical Technology(SRIPT) was adopted on the existing toluene disproportionation and transalkylation unit (TDT) in a petrochemical company of SINOPEC. Without the key equipment replaced, only the inner components of some towers, pumps and pipelines were modified, the capacity expansion of the TDT unit was realized. The application results show that the HAT-300 catalyst has higher activity and selectivity, can adapt to the conditions of higher space velocity and lower hydrogen-hydrocarbon ratio. Even though the content of low-value heavy aromatics in the feed increased considerably, the HAT-300 catalyst exhibited excellent conversion and selectivity.

Key words: toluene disproportionation, capacity expansion revamping, catalyst, HAT-300