连续重整催化剂再生工艺冷却过程的技术分析

ANALYSIS OF COOLING IN CCR CATALYST REGENERATION

通过对连续重整催化剂再生工艺过程的探讨,分析了催化剂高温干燥后直接用氮气吹扫、置换对催化剂活性的负面影响;介绍了洛阳分公司对高温干燥后催化剂采用“先在高含氧气氛下冷却降温再用氮气吹扫”的方法的效果。生产实践证明,采用改进后的冷却降温方法,可消除高温下氮气的负面影响,使催化剂的铂分散度得到提高,催化剂碳质量分数由原来的2％-3％降至1％-2％,并有助于提高装置的加工能力。

Through the study of catalyst regeneration of CCR process, the negative impact of nitrogen purging of catalyst after high-temperature drying on catalyst activity is analyzed. In SINOPEC Luoyang Company, the catalyst dried in high-temperature is purged by nitrogen after being cooled in oxygen-rich environment. The operation proves that the improved cooling process has eliminated the negative effect of nitrogen at higher temperatures and improved the dispersion of platinum in catalyst. The carbon on the catalyst is reduced to 1% - 2% from 2% -3%, amd is favorable for increasing unit throughput.