FCC汽油催化裂化制取丙烯的反应性能(英文)  

CATALYTIC CRACKING PERFORMANCE OF FCC NAPHTHA FOR PROPYLENE

作　　者：王为然[1] 王刚[1] 张文斌[1] 徐春明[1] 高金森[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249

出　　处：《石油学报（石油加工）》2010年第3期394-402,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家青年科学基金项目(20906103)资助

摘　　要：分别考察了不同族组成的FCC汽油、FCC汽油窄馏分和几种模型化合物(1-己烯、3-甲基戊烷、正己烷和环己烷)催化裂化生成丙烯的性能。结果表明,高烯烃含量的FCC汽油催化裂化具有较高的转化率和丙烯产率。1-己烯、3-甲基戊烷、正己烷和环己烷生成丙烯的平均速率比32.5:2.5:2.0:1。在FCC汽油窄馏分催化裂化生成丙烯过程中,轻馏分裂化生成丙烯的贡献大于重馏分,因此回炼FCC汽油轻馏分制取丙烯是一种较好的选择。1-己烯的催化裂化反应中,主要发生裂化反应,占49%～69%,并且该比例随着反应温度的升高而增大;氢转移反应占15%～28%,并且随反应温度升高先增加后减小,在550℃时达到27.50%;聚合及环化反应分别占15%～28%和10%～15%。The catalytic cracking experiments of FCC naphtha with different composition,FCC naphtha narrow fractions and 1-C=6,3-methylpentane,n-hexane and cycl-hexane were carried out over commercial equilibrium FCC catalyst.The results showed that in the catalytic cracking of FCC naphtha with high contents of olefins higher conversion and higher yield of propylene could be obtained.The propylene average generation rate ratio of 1-C=6,3-methylpentane,n-hexane and cyclhexane was 32.5：2.5：2.0：1.Reprocessing lighter FCC naphtha narrow fraction is a feasible alternative,which makes more contribution to propylene yield than heavy narrow fraction.In 1-C=6 catalytic cracking reaction,cracking reaction predominated with the ratio of 49%-69% in all reactions of cracking process,and the ratio enhanced with the increase of reaction temperature.At the same time,the ratio of hydrogen transfer reaction was in the range of 15%-28% and passed through its maximum（27.50%） at 550℃ with the reaction temperature increasing,the ratios of oligomerization and cyclization reaction were in the range of 15%-28% and 10%-15%,respectively.

关 键 词：FCC汽油 窄馏分 模型化合物 裂化性能 丙烯 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]