CIESC Journal ›› 2014, Vol. 65 ›› Issue (11): 4363-4367.DOI: 10.3969/j.issn.0438-1157.2014.11.021

• 催化、动力学与反应器 • 上一篇    下一篇

正丁烷/氢气/空气混合物催化着火的实验研究

钟北京1, 于亚薇1, 熊鹏飞2   

  1. 1. 清华大学航天航空学院, 热科学与动力工程教育部重点实验室, 北京 100084;
    2. 中国空气动力研究与发展中心, 四川 绵阳 621000
  • 收稿日期:2014-04-01 修回日期:2014-06-04 出版日期:2014-11-05 发布日期:2014-11-05
  • 通讯作者: 钟北京
  • 基金资助:
    国家自然科学基金项目(51276096).

Experimental study on catalytic ignition of n-C4H10/H2/air mixtures

ZHONG Beijing1, YU Yawei1, XIONG Pengfei2   

  1. 1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, School of Aerospace, Tsinghua University, Beijing 100084, China;
    2. China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China
  • Received:2014-04-01 Revised:2014-06-04 Online:2014-11-05 Published:2014-11-05
  • Supported by:
    supported by the National Natural Science Foundation of China (51276096).

摘要: 通过实验研究了正丁烷/氢气/空气混合物在Pt催化剂表面上的催化着火特性.实验发现,氢气在正丁烷/空气混合物的催化着火过程中既存在热作用,也存在化学作用.当化学作用为主导时,可燃混合物的化学催化着火温度明显低于热着火温度.实验结果表明,只有当氢气在可燃混合物的含量大于某个临界值时,化学催化着火才能发生,而且该临界值的大小以及催化着火温度均与可燃混合物的当量比有关.

关键词: 微通道, 层流, 正丁烷, 氢, 催化着火, 热作用, 化学作用

Abstract: An experimental study on catalytic ignition of n-C4H10/H2/air mixtures in the Pt-coated catalyst surface was conducted. Hydrogen had not only thermal, but also chemical effects on the catalytic ignition of the n-C4H10/air mixtures. The chemical catalytic ignition temperature of the combustible mixtures was obviously lower than thermal ignition when chemical effect was dominant. However, chemical catalytic ignition occurred only when hydrogen content in the combustible mixtures was greater than a critical value. The critical value and the catalytic ignition temperature were related to equivalence ratio of the combustible mixtures.

Key words: microchannels, laminar flow, n-C4H10, hydrogen, catalytic ignition, thermal effect, chemical effect

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