Abstract: To address the challenges of debottlenecking old semi-regenerative reforming units, insufficient heater capacity, and shortened production cycles after capacity expansion, pseudo-boehmite was selected as the powder material. Using an aluminate precipitation method, the high-bulk-density semi-regenerative reforming catalyst SR-2000 was prepared through key production processes including extrusion molding, calcination, modification, impregnation, activation, and reduction-sulfidation. This catalyst features low impurity content, unique pore structure, and excellent catalytic performance. Compared to the low-bulk-density catalyst SR-1000, SR-2000 demonstrates superior selectivity and stability.The lab evaluation results indicate that the performance of the regenerated SR-2000 catalyst is comparable to that of fresh catalyst, demonstrating excellent regenerability.The initial industrial application trial of SR-2000 showed that under prolonged high-severity reaction conditions, this reforming catalyst exhibits outstanding performance, contributing to enhanced social and economic benefits for the refinery.

Key words: catalytic reforming, semi-regeneration, catalyst, SR-2000, commercial application