氧碳比对微细腔内自热重整积碳的影响  

The Effect of O_2/CH_4 Ratio on the Methane/Wet-Air Auto-Thermal Reforming and Carbon Deposition in the Micro-Chamber

作　　者：冉景煜[1,2] 涂维峰[1,2] 赵柳洁[1,2] 

机构地区：[1]低品位能源利用技术及系统教育部重点实验室(重庆大学),重庆400044 [2]重庆大学动力工程学院,重庆400044

出　　处：《工程热物理学报》2011年第6期1069-1072,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目资助(No.50876118);教育部新世纪优秀人才计划资助(No.NCET-08-0605);中央高校基本科研业务费资助基金(No.CDJXS11142231);重庆大学211工程"三期建设"项目(No.s-09101)

摘　　要：针对微动力装置中重整腔内强吸热重整反应和催化剂积碳等问题,耦合甲烷部分氧化反应,实现系统自供热并抑制积碳。为了优化微细腔内甲烷湿空气自热重整反应条件,采用数值方法研究预热温度为800 K,不同水碳比下,氧碳比对绝热的微细腔内甲烷湿空气自热重整反应的影响。结果表明:反应气中水碳比为1～2.5,微细腔内甲烷湿空气自热重整的最佳氧碳比为0.2～0.225,可以获得最大出口氢气质量分数4.52%～4.81%和较低的积碳浓度0.6612～0.3833 mmol/m^2。Considering the problems of catalyst carbon deposition and reforming endothermic reaction in micro-reforming chamber,coupled methane catalyst partial oxidation and steam methane reforming can make the micro-reforming system auto-supply heat and inhibit the carbon deposited on the catalyst.For these proposes of optimizing methane-wet air autothermal reaction conditions, the effect of O/C ratio on the methane wet-air auto-thermal reforming and carbon deposition in the micro-chamber were simulated at a preheat temperature of 800 K.The results show the optimum O/C ratio is 0.2 to 0.225,with the mass fraction of H_2 reaching 4.52%～4.81%and the density of surface carbon deposition reducing 0.6612～0.3833 mmol/m^2,while the O/C ratio is 1～2.5 of the inlet gas.

关 键 词：微细腔 自热重整 积碳 氧碳比 

分 类 号：TK16[动力工程及工程热物理—热能工程]