Microchannel methane steam reformers with improved heat transfer efficiency and their long-term stability

Min Ho Jin, Chun Boo Lee, Dong Wook Lee, Sung Wook Lee, Jin Woo Park, Duckkyu Oh, Kyung Ran Hwang, Kwan Young Lee, Jong Soo Park

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

To improve the performance of methane steam reforming as an endothermic reaction, the heat transfer efficiency from a heat source to a catalyst is a much more important factor than the reaction activity of catalyst itself on an industrial scale. In this context, microchannel reactors with combustion reaction (comb) blocks and reforming reaction (reform) blocks assembled by turns attract great attention due to their enhanced heat transfer rate. However, the even heat transfer to a catalyst bed is still a challenging topic. In this study, we improved the heat transfer efficiency of microchannel methane steam reformers by using porous-membrane-type catalysts and shifting a combustion point onto the top of the catalysts. As a result, methane conversion (conv) has increased by 14.7% at the same supply rate of fuel. Surprisingly, 1 Nm3 h-1 of hydrogen has been produced using just 0.58 L (H: 2.9 cm, W: 20 cm, L: 10 cm) of reactors. In addition, the long-term stability of our microchannel reformers was verified by methane reforming tests for 500 h. Therefore, our microchannel reactors are expected to be more suitable for distributed power generation based on fuel cells.

Original languageEnglish
Pages (from-to)86-92
Number of pages7
JournalFuel
Volume176
DOIs
Publication statusPublished - 2016 Jul 15

Keywords

  • Catalyst
  • GTL
  • Hydrogen
  • Methane steam reforming
  • Micro-channel reactor

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)
  • Organic Chemistry

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    Jin, M. H., Lee, C. B., Lee, D. W., Lee, S. W., Park, J. W., Oh, D., Hwang, K. R., Lee, K. Y., & Park, J. S. (2016). Microchannel methane steam reformers with improved heat transfer efficiency and their long-term stability. Fuel, 176, 86-92. https://doi.org/10.1016/j.fuel.2016.02.052