正己烷气相氧化裂解制取低碳烯烃  

PREPARATION OF LIGHT ALKENES BY GAS PHASE OXIDATIVE CRACKING OF HEXANE

作　　者：刘雪斌[1] 徐恒泳[1] 李文钊[1] 陈燕馨[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《石油学报（石油加工）》2004年第1期88-92,共5页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：由于O2的引入,正己烷气相氧化裂解与传统的热裂解工艺相比,使吸热反应变为内供热型放热反应,降低了生产过程中的能耗和装置投资。O2的介入强化了正己烷分子的活化,加剧了C—H键的断裂,降低了反应的活化能,使氧化裂解反应在温度比较低时就具有较高的转化率和烯烃收率,特别是在750℃以下时,氧化裂解的烯烃收率明显高于热裂解的烯烃收率。Compared with the production of light alkenes by traditional thermal cracking of hexane,gas phase oxidative cracking of hexane is in efficient utilization more energy and capital cost effective for its exothermic character and thus the reaction to proceed under autothermic state with oxygen addition is possible.Due to the easiness of C-H bond rupture in the hexane molecules activated by oxygen and the depression of activation energy of cracking reactions with oxygen participation,higher hexane conversion and light alkenes yield can be achieved at relatively lower temperatures in the gas phase oxidative cracking of hexane than that in pyrolysis,especially below 750?℃.

关 键 词：正己烷 气相氧化裂解 低碳烯烃 一氧化碳 热裂解 

分 类 号：TQ221.21[化学工程—有机化工]