物理化学学报 >> 2010, Vol. 26 >> Issue (11): 2899-2906.doi: 10.3866/PKU.WHXB20101121

热力学、热化学和溶液化学 上一篇    下一篇

微细腔内甲烷湿空气低温重整特性热力学分析

冉景煜, 赵柳洁   

  1. 重庆大学动力工程学院, 重庆400044
  • 收稿日期:2010-04-12 修回日期:2010-07-09 发布日期:2010-10-29
  • 通讯作者: 冉景煜 E-mail:ranjy@cqu.edu.cn
  • 基金资助:

    国家自然科学基金(50876118)和教育部新世纪优秀人才计划(NCET-08-0605)资助项目

Thermodynamic Analysis of Low Temperature Methane Wet-Air Reforming in a Microcombustor

RAN Jing-Yu, ZHAO Liu-Jie   

  1. College of Thermal Power Engineering, Chongqing University, Chongqing 400044, P.R.China
  • Received:2010-04-12 Revised:2010-07-09 Published:2010-10-29
  • Contact: RAN Jing-Yu E-mail:ranjy@cqu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (50876118) and New Century Excellent Talent Project of Ministry of Education, China (NCET-08-0605).

摘要:

从理论上探讨低温(小于973 K)、压力、空碳比及水碳比对重整特性及甲烷转化率的影响, 以及各参数的合理取值范围; 同时, 对甲烷自热重整系统与无氧重整系统进行了性能对比. 研究结果表明: 微细腔在温度大于633 K,反应压力小于0.10 MPa, 空碳(摩尔)比为2.0 以及水碳摩尔比在1.0-2.5之间有利于甲烷自热重整反应的发生;自热重整与无氧重整体系相比, 当甲烷质量流量一定时, 有氧系统可以在较低的水碳比和较低的温度条件下获得较高的甲烷转化率和氢气产量.

 

关键词: 微细腔, 低温, 自热重整, 热力学分析, 无氧系统, 对比

Abstract:

We studied the effects of reaction pressure, molar ratios of air to methane and steam to methane on the reforming process at temperatures below 973 K theoretically. Their reasonable ranges were also studied. We also compared the performance of a methane autothermal reforming system and a non-oxygen system. Results show that methane autothermal reforming occurs much more easily at temperatures above 633 K, reaction pressures below 0.10 MPa, a molar ratio of air to methane of 2.0, and a molar ratio of steam to methane between 1.0 and 2.5. At a definite methane mass flow, a higher methane conversion rate and hydrogen yield can be obtained at lower temperatures and in lesser steam to methane ratio in an autothermal reforming systemcompared with a non-oxygen system.

 

Key words: Micro-combustor, Low temperature, Autothermal reforming, Thermodynamic analysis, Non-oxygen system, Contrast

MSC2000: 

  • O642