甲烷在直流放电等离子体中的分解和碳二烃的形成  

Decomposition of Methane and Formation of C_2 Hydrocarbons in DC Discharge Plasma

作　　者：贺建勋[1] 胡淼[1] 韩媛媛[2] 李艳辉[3] 周引穗[3] 陆治国[3] 

机构地区：[1]西北大学化工学院,陕西西安710069 [2]华侨大学化工系,福建泉州362011 [3]西北大学物理学系,陕西西安710069

出　　处：《石油化工》2004年第1期1-4,共4页Petrochemical Technology

基　　金：陕西省科技攻关资助项目(2000K13-G19;2002K09-G21)。

摘　　要：测量了甲烷在直流放电等离子体中的红外发射光谱,研究了甲烷分解过程以及碳二烃形成过程,考察了重要可控宏观参数对过程的影响。实验结果表明:在直流放电条件下,对甲烷分解是有效的。为了得到较高的碳二烃收率,甲烷的分解和碳二烃的形成应在不同的阶段,采取不同的条件。在大量实验的基础上得到了电流密度与可加工进料量的最佳组合数据,为直流放电反应器放大设计以及在此条件下原料的适宜流量提供依据。Process of methane decomposition and C_2 hydrocarbons formation in DC discharge plasma were investigated by measuring IR emission spectrum.Important macro-factors which affected the process were observed.Methane decomposition was effective under conditions of DC discharge plasma.The reaction time required and conditions of methane decomposition and C_2 hydrocarbons synthesis should be considered together in order to obtain high yield C_2 hydrocarbons.The optimum conditions between electric current density and methane feed quantity were obtained on the basis of experiments,which provided references for reactor scale-up and suitable feed gas quantity under conditions of DC discharge plasma.

关 键 词：甲烷 碳二烃 等离子体 分解 光谱分析 

分 类 号：TQ039[化学工程]