北京航空航天大学学报 ›› 2008, Vol. 34 ›› Issue (11): 1307-1310.

• 论文 • 上一篇    下一篇

二甲醚部分氧化重整制氢热力学分析及实验

宋凌珺, 李兴虎   

  1. 北京航空航天大学 交通科学与工程学院, 北京 100191
  • 收稿日期:2007-12-10 出版日期:2008-11-30 发布日期:2010-09-16
  • 作者简介:宋凌珺(1983-),女,江西景德镇人,博士生,sljfrances@ae.buaa.edu.cn.
  • 基金资助:

    汽车安全与节能国家重点实验室开放基金资助项目(KF2005-10)

Thermodynamic analysis and experimental verification of hydrogen production from dimethyl ether partial oxidation reforming

Song Lingjun, Li Xinghu   

  1. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2007-12-10 Online:2008-11-30 Published:2010-09-16

摘要: 用元素势能法对二甲醚(DME)部分氧化重整制氢进行了热力学分析与计算,在定压绝热条件下计算了产物中各组分的体积分数随空醚比(0.5~4)和压强(0.1~0.5MPa)的变化关系.结果表明:H2的体积分数随压强的增大而减小;在标准大气压和空醚比为3的条件下,由二甲醚部分氧化反应得到的氢气体积分数最大,约为35%;H2的体积分数随空醚比的增大先增后减,CO的体积分数变化不明显,CO2和CH4的体积分数随空醚比的增大而减小.最后,在自制实验台上进行二甲醚等离子体重整制氢的实验,将该实验结果与热力学分析结果进行了对比分析,结果证明用元素势能法分析得到的H2,CO,CH4和CO2的体积分数随空醚比的变化趋势与实验结果较为一致.

Abstract: Thermodynamic analysis was carried out for theoretical reaction of hydrogen produced from dimethyl ether(DME) partial oxidation reforming by using the element-potential method. The gas concentrations in the product gas were calculated under the constant-pressure and adiabatic condition as a function of air-to-DME ratio(0.5~4) and pressure(0.1~0.5MPa). The result proves that H2 concentration decreases with increasing of pressure. H2 concentration produces from DME partial oxidation reaction is the largest under atmosphere when air-to-DME ratio is about 3. The maximum is about 35%. By increasing air-to-DME ratio, H2 concentration increases firstly and then decreases, and CO concentration doesn-t changes obviously, and the concentration of CO2 and CH4 decreased respectively. Adiabatic temperature increases with increasing of air-to-DME ratio. At last, the experiment of hydrogen-rich gas produces from plasma reforming of DME is carried out on self-made equipments to verify the analysis, it proves that the concentration of H2,CO,CO2 and CH4 as a function of air-to-DME ratio analyzed by the element-potential method is almost in agreement with the experimental result.

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