Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (11): 2899-2906.doi: 10.3866/PKU.WHXB20101121

• THERMODYNAMICS,THERMOCHEMISTRY AND SOLUTION CHEMISTRY • Previous Articles     Next Articles

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).

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