文献类型：期刊文献

中文题名：裂解汽油一段选择性加氢的工艺条件研究

英文题名：Operating Conditions for Selective Hydrogenation of Pyrolysis Gasoline in the First Stage

作者：杨栋[1];程振民[1];曹益宁[1];周志明[1];袁渭康[1]

机构：[1]华东理工大学联合化学反应工程研究所化学工程联合国家重点实验室,上海20023

年份：2007

卷号：23

期号：6

起止页码：536

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;EI(收录号：20081211162230);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：裂解汽油;选择性加氢;间歇反应器;固定床反应器

外文关键词：pyrolysis gasoline; selective hydrogenation; batch reactor; fixed bed reactor

摘要：采用高压搅拌釜式反应器,在消除催化剂内外扩散影响的基础上,以环戊二烯、苯乙烯和1-己烯与溶剂正庚烷组成的混合物为模型化合物,对裂解汽油一段选择性加氢的操作条件进行了研究。发现当反应温度和压力升高时,各个组分的转化率都随之增高,但是双烯的加氢选择性变差。当单烯和双烯组分共存时,环戊二烯和苯乙烯优先进行加氢反应,当双烯浓度降至一定程度时,1-己烯才进行加氢。此外还采用固定床考察了温度、压力和氢油比对裂解汽油加氢的影响。结果表明,较合适的反应条件为313 K,2.5～3.0 MPa和氢油比25。
The selective hydrogenation of pyrolysis gasoline （pygas） over Pd/Al2O3 catalyst was investigated in an autoclave in the absence of internal and external transport limitation. The mixture composed of cyclopentadiene, styrene, 1-hexene and solvent n-heptane was used as a model compound to study the operation conditions of the first-stage selective hydrogenation of pygas. The results showed that the conversion of cyclopentadiene, styrene and 1-hexene increased with the increasing of the reaction temperature and pressure, while the selectivity of diolefin decreased. The cyclopentadiene and styrene were superior in hydrogenation, while the hydrogenation of 1-hexene became evident only when the concentration of diolefins decreased to a certain degree. Then effects of temperature, pressure and the volume ratio of hydrogen to pygas on hydrogenation were investigated in a fixed bed reactor. The results showed that the appropriate conditions were 313 K, 2.5-3.0 MPa and the volume ratio of hydrogen to pygas 25.