含水乙醇低温等离子体重整制氢研究  

Experiment Study on Hydro-ethanol Reforming Hydrogen Production by Non-thermal Plasma

作　　者：胡又平[1,2] 李格升[3] 高孝洪[3] 严立[1] 

机构地区：[1]大连海事大学材料工艺研究所,大连116026 [2]武汉理工大学理学院,武汉430063 [3]武汉理工大学能动学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2009年第5期928-931,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：武汉市科技攻关计划项目(批准号:20066002065);湖北省国际科技合作重点项目(批准号:2006CA012)资助

摘　　要：基于对含水乙醇等离子体重整制氢的实验研究,实现了利用锥齿形电极结构介质阻挡放电等离子体对乙醇进行重整制氢.实验结果表明:乙醇重整效率及产物中氢气的选择性与反应物初始浓度、注入功率、电源频率、反应物流量等因素有关.含水乙醇体积分数为75%时,氢气的选择性最大;氢气的选择性随着反应器中注入功率增加而增大;放电电源的频率接近负载的谐振频率时,重整率最高;对一定的反应器,反应物的流量太大和太小,都不利于重整反应的进行.锥齿形电极结构介质阻挡放电等离子体反应器的重整效率高于同轴平行电极.乙醇等离子体重整制氢的主要气态产物有H2,CO,CH4,CO2,C2H4,C2H6等,在乙醇体积分数为75%、放电间距为2.0mm,频率为10.5kHz,注入功率为240W的条件下,得到重整率为65%,产物中氢的体积比为67%.The hydrogen production from ethanol reforming by abevel-gear-to-plane DBD plasma is studied experimentally. The results show that the reforming efficiency and hydrogen selectivity are related to the initial concentration of ethanol, the power input, the power frequency and the flow rate. The higher selectivity is obtained for an initial concentration of 75% ethanol, high input power, working at resonance frequency and a moderate flowrate. The bevel-gear-to-plane DBD construction performs considerably better than the coaxial design for the DBD-plasma reforming. The highest hydrogen conversion efficiency of 65% is obtained at a power input of 240W, a frequency of 10.5 kHz, a 2.0 mm discharge gap and a flow rate of 3.0 mL/min from a 75% ethanol/25% water mixture.

关 键 词：乙醇重整制氢 等离子体 锥齿形电极 

分 类 号：U664.122[交通运输工程—船舶及航道工程]