等离子体CH_4-CO_2重整制合成气动力学分析  

Kinetic Analysis for CO_2 Reforming with CH_4 to Synthesis Gas by Plasma

作　　者：王彧婕[1] 李洁[1] 龙华丽[1] 代伟[1] 印永祥[1] 戴晓雁[1] 

机构地区：[1]四川大学化工学院,成都610065

出　　处：《天然气化工—C1化学与化工》2007年第2期26-31,共6页Natural Gas Chemical Industry

基　　金：国家自然科学基金资助(批准号:10475060)

摘　　要：对大气压反常辉光放电条件下CH4-CO2重整制合成气反应过程进行了数值模拟。针对实际的过程特征,合理地估计了反应停留时间、电子温度、电子密度作为模拟计算的输入参数,建立了包含19个组分、60个化学反应式的反应动力学基本模型。对基本模型进行简化,得到了仅包含27个基元反应的简化模型。模拟表明,基本模型、简化模型与实验结果吻合良好。在此基础上对主要产品的生成路线和机理进行了分析,得出CO的生成主要依靠CO2裂解和CH4氧化脱氢;H2的生成主要依靠CH4的裂解和脱氢。The numerical simulation of CO2 reforming with CH,t to synthesis gas was carried out under the condition of atmospheric abnormal glow discharge. For actual process characteristics, the resident time, electronic temperature and electronic density were reasonably estimatedo A basic model of reaction dynamics consisting of 60 chemical reactions among 19 active compounds, and a simplified model including only 27 reactions were developed for seeking reaction mechanism. The results of the basic model and simplified model agreed with experimental results, and the reaction mechanism was described. The product CO was generated mainly by CO2 cracking with energetic electrons and CH4 dehydrogenation, and the product H2 was issued mainly by CH4 dehydrogenation.

关 键 词：大气压反常辉光放电 合成气 动力学模拟 基本模型 简化模型 

分 类 号：O643[理学—物理化学]