Abstract: This article expounds the commercial application of PS-VI catalyst (RC011), developed by Research Institute of Petroleum Processing, in the 0.8 Mt/a continuous reforming unit (CRU) of SINOPEC Zhenhai Refining and Chemical Company (ZRCC). In order to examine if the activity and selectivity has changed, the calibrations of the unit are conducted at its SOR and EOR stages. It is discovered that after running for 541 operation cycles, the surface area of the catalyst decreases from 187 m2/g at SOR to 143 m2/g at EOR and iron content increases form 280 ?g/g at SOR to 2 400 ?g/g at EOR, resulting in decrease of the catalyst activity by 4.1℃ and the selectivity of the stabilized gasoline, aromatics and H2 yield decreases 1.77％, 1.13％ and 0.2%, respectively. These changes result in the benefit of the device falling 28.136 million yuan/a. It is suggested that the replacement of the catalyst be once every 4 years to keep pace with the factory overhaul cycle every four-years.

Key words: continuous, catalytic reforming, catalyst, performance, operation cycles