裂解碳五馏分热二聚反应本征动力学的研究  

Intrinsic Kinetics on Thermal Dimerization of Steam Cracking C_5 Fraction

作　　者：齐东峰[1] 钟晓图[2] 

机构地区：[1]中国石化北京燕山分公司,北京102500 [2]北京化工大学理学院,北京100029

出　　处：《石油化工》2014年第6期662-668,共7页Petrochemical Technology

摘　　要：以中国石化北京燕山分公司提供的裂解碳五馏分为原料,采用高压反应釜考察了不同搅拌转速（200,400,600,700,800 r/min）对热二聚反应的影响.实验结果表明,在搅拌转速为700 r/min时已基本消除了外扩散对热二聚反应的影响.在此前提下进行了不同反应条件下的热二聚反应实验,采集了40～ 100℃之间7个温度点、反应时间为0～10h的动力学数据.根据裂解碳五馏分热二聚反应的特性进行了一定的简化假设,建立了热二聚反应本征动力学模型,通过实验数据的最优化处理,求得了环戊二烯自二聚反应、双环戊二烯解聚反应、异戊二烯自二聚反应、环戊二烯与异戊二烯共二聚反应以及环戊二烯与1,3-丁二烯共二聚反应的动力学模型参数.实验值和模型计算值的比较结果表明,所建立的模型准确可靠.The intrinsic kinetics of the thermal dimerization of steam cracking C5 fraction was studied.The effect of stirring speed in a high-pressure reactor on the dimerization was investigated.The results showed that the inffuence of external diffusion on the dimerization was eliminated at the stirring speed of 700 r/min.The kinetics data were collected under the reaction conditions of 40-100 ℃,0-10 h and 1.5 MPa.The parameters of the intrinsic kinetics models for five reactions,including the self-dimerization of cyclopentadiene,the depolymerization of dicyclopentadiene,the self-dimerization of isoprene,the copolymerization of cyclopentadiene and isoprene,and the copolymerization of cyclopentadiene and 1,3-butadiene,were obtained by the optimization of the experimental data.The intrinsic kinetics models were proved to be reliable by the comparison between the experimental and calculated data.

关 键 词：裂解碳五馏分 热二聚反应 本征动力学 

分 类 号：TQ031[化学工程]