关于I重整生成油辛烷值较低问题的分析

Analysis on Reasons of Causing Low Octane Number Reformate

针对2015年6月1日金陵分公司I重整提高反应温度后,重整生成油辛烷值及产氢量较低的情况从原料性质、操作条件及催化剂性质三方面分析原因,并通过与前两次提高温度至525℃后重整生成油辛烷值、产氢量、反应总温降、C5+液体收率、重整循环氢纯度及稳定塔顶气数据的详细对比,得出6月1日提温后重整生成油及产氢量较低是由于重整催化剂失氯造成的,进一步分析可能引起催化剂失氯的原因,并通过增加注氯量,至6月17日,重整生成油辛烷值、产氢量、重整总温降等已恢复正常。

Based on the situation that the reformate octane number and the hydrogen output were comparatively lower since increasing the reaction temperature of CCR I on June 1, 2015, ieasons were analyzed from following three aspects： feed properties, operating conditions and catalyst properties. Detailed data （reformate octane number, hydrogen output, reaction temperature drop, C5＋ liquid yield, recycle gas purity and stabilizer overhead gas data） were compared with those when the reaction temperature was increased to 525℃ twice before. The results show that that the loss of chlorine in the reformer catalyst is main reason to cause lower the rcformate octane number and hydrogen output. In addition, possible reasons of chlorine loss of the catalyst were further analyzed. By increasing chlorine injection, the reformate octane number, hydrogen output and total temperature drop were returned to normal until Jun 17, 2015.