The Effects of Combustion Parameters on the Characteristics of a Steam-Methane Reformer

연소 변수가 수증기-메탄 개질기의 특성에 미치는 영향

  • 이재성 (고려대학교 대학원 기계공학과) ;
  • 김호영 (고려대학교 기계공학부)
  • Published : 2012.04.13

Abstract

The effects of combustion parameters on the characteristics of a steam-methane reformer. The reformer system was numerically simulated using a simplified two-dimensional axisymmetric model domain with an appropriate user-defined function. The fuel ratio, defined as the ratio of methane flow rate in the combustor to that in the reactor, was varied from 20 to 80%. The equivalence ratio was changed from 0.5 to 1.0. The results indicated that as the fuel ratio increased, the production rates of hydrogen and carbon monoxide increased, although their rates of increase diminished. In fact, at the highest heat supply rates, hydrogen production was actually slightly decreased. Simulations showed that equivalence ratio of 0.7 yielded the highest steam-methane mixture temperature despite a 43% higher air flow rate than the stoichiometric flow rate. This means that the production of hydrogen and carbon monoxide can be increased by adjusting the equivalence ratio, especially when the heat supply is insufficient.

Acknowledgement

Supported by : 한국에너지자원기술기획평가원