Abstract: The performance change of continuous reforming catalyst PS-Ⅶ in 1.39 Mt/a continuous reforming unit of SINOPEC Yangzi Petrochemical Co., Ltd. was introduced. The structure and composition of the catalysts were analyzed by TEM and elemental analysis, and the selectivity and activity of the catalysts were simulated by R-sim software. Based on the change of product distribution and operating conditions, the economy of catalyst operation was analyzed. The results showed that the specific surface area of catalyst reduced to 149 m²/g at the end of operation due to the limitation of the first generation regeneration technology and the inevitable accumulation of Fe, the crushing strength reduced to 42 N/grain, the catalyst activity reduced by 4.7℃, the yield of C₆+ liquid and the yield of aromatics reduced by 1.33 percentage points and 1.25 percentage points respectively in the reforming unit, and the catalyst reached the target of changing agent.

Key words: continuous catalytic reforming, catalyst, end of run, performance analysis