影响碳五分离装置双烯烃二聚反应因素分析  

Analysis of Factors Affecting Diolefin Dimerization in C_(5) Separation

作　　者：潘晨 沈超 Pan Chen;Shen Chao(Alkene Department of China Korea(Wuhan)Petrochemical Co.,Ltd.,Wuhan 430082,China)

机构地区：[1]中韩(武汉)石油化工有限公司烯烃部,湖北武汉430082

出　　处：《山东化工》2022年第12期160-161,164,共3页Shandong Chemical Industry

摘　　要：碳五分离装置主要以裂解乙烯汽油加氢装置中产出的碳五馏分作为原料。碳五馏分组分复杂且相对挥发度相差较小,各组分沸点集中在25~50℃之间。碳五馏分中的双烯烃具有性质活泼的双键,在一定温度下易于发生自二聚、共聚或多聚反应,形成20余种共沸物,其中主反应为环戊二烯自聚形成双环戊二烯。中韩石化碳五分离装置创新性同时采用二聚工艺和反应精馏技术使环戊二烯二聚保证异戊二烯、双环戊二烯产品合格。本文主要介绍碳五分离装置中热二聚反应的反应原理、反应条件及控制要点。The C_(5) separation unit mainly uses the C_(5) fraction produced in the cracking ethylene gasoline hydrogenation unit as the raw material.The group composition of C_(5) fraction is complex and the relative volatility difference is small.The boiling point of each component is concentrated between 25℃and 50℃.The diolefins in C_(5) fraction have lively double bonds,and are easily self dimerization,copolymerization or polymerization at a certain temperature to form more than 20 azeotropes.The main reaction is cyclopentadiene self polymerization to form dicyclopentadiene.The C_(5) separation unit of Sinopec—SK(WuHan)Petrochemical Co.Ltd.innovatively adopts dimerization process and reactive distillation technology to dimerize cyclopentadiene and ensure the qualification of isoprene and dicyclopentadiene products.This paper mainly introduces the reaction principle,reaction conditions and control points of thermal dimerization in C_(5) separation unit.

关 键 词：碳五分离 双烯烃 反应器 热二聚 反应精馏 

分 类 号：TQ221.22[化学工程—有机化工] TE96[石油与天然气工程—石油机械设备]