胶质沥青质在催化裂化过程中的行为探讨

A Study on the Behavior of Resin and Asphaltine in Catalytic Cracking

根据已有的馏分油催化裂化理论并参考间接得到的实验数据，半工业化数据和工业化数据以及有关的情况进行分析推理，推证出了胶质沥青质催化裂化行为．据此结果对现在典型的重油催化裂化技术进行了分析，证明所推得的胶质沥青质的ＦＣＣ反应行为是：胶质沥青质的链烷基都是断裂碳链；芳环稳定但参与进一步的缩合反应；环烷基则随反应温度变化而变化．当反应温度较低时，环烷基脱氢芳构化的氢转移反应比其开环断碳链反应要快，故生焦率高；反应温度较高时，环烷基的脱氢芳构化反应比其开环断碳链裂解的反应速度慢，因而就会有更多的环烷基裂解，生焦率低，轻质目的产品收率高．

The behavior of resin and asphaltine in catalytic cracking is inferred from the known catalytic cracking theory of distillate and various practical data. The analysis of heavy oil catalytic cracking shows that inferred FCC reaction behavior of resin and asphaltine agrees with the actual situation. The reaction behavior is like this:the alkyl groups of resin and asphaltene are all breaking Cchains. Its arylrings are stable but take place condensation reaction. FCC behavior of its naphthene base is different according to different reaction temperatures. when reaction temperature is lower, the rate of dehydrogenation aromatization reaction of naphathenic base is higher than that of ringopen breaking Cchains, thus tar yield is higher;when reaction temperature is higher, the former is lower than the latter,thus tar yield is lower and the yields of light products are higher.