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?℃.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2004年第1期88-92,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
