关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">连续重整装置, 换剂, 催化剂循环量, 闭锁料斗, 循环时间, 补偿阀控制, 装/卸料报警值

Abstract: A catalyst circulation optimization method is proposed to address the issue of maintaining stable catalyst circulation and transportation in a continuous reforming unit after replacing the catalyst (the bulk density of the catalyst changed from 670 kg/m³ to 561 kg/m³). The lock hopper still adopts the differential pressure mode, only adjusting the upper and lower material level limit values in the locking area of the lock hopper (changed from 48.2% - 96.0% to 41.6% - 97.0%), so that the single circulation amount of the catalyst in the locking area is the same. At the same time, the alarm values for fast and slow loading/unloading are adjusted from 12-30s/12-30s to 14-35s/14-35s, matching it with the opening and closing time of the upper and lower balance valves of the lock hopper, ensuring stable catalyst circulation and transportation in the differential pressure mode. This method greatly simplifies the adjustment of other control parameters and can achieve efficient and stable circulation of the catalyst after catalyst replacement.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">continuous reforming unit, catalyst replacement, catalyst circulation amount, lock hopper, circulation time, compensation valve control, loading/unloading alarm value 文章基金项目：无