alexa Abstract | The effects of reactor material and convective heat transfer coefficient on methane catalytic partial oxidation in a micro-channel

Journal of Chemical and Pharmaceutical Research
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Abstract

By using detailed reaction mechanism of CH4 catalytic oxidation on rh surface, the catalytic partial oxidation of low concentration CH4 was investigated numerically in a micro-channel focusing on the effects of reactor material and convective heat transfer coefficient on it. The results show that: the reactor with different reactor materials and h has the fixed effect on methane catalytic partial oxidation. First, methane conversion of the outlet is 92.31% on ceramic reactor; XCH4 is 96.1%, 96.5% and 96.9% in several other reactors. The material of big thermal conductivity such as stainless steel, corundum, red copper produces bigger yield of CO and H2 than ceramic reactor. At the same time, high thermal conductivity has a problem of carbon deposition on the wall. Then, when h is 0 w·m-2·k-1, the methane conversion efficiency reaches 99.9%, yield coefficent of H2 reaches 95.85%, yield coefficent of CO reaches 86.7%. The smaller h is, the more syngas we get in this reactor. In order to get more syngas and have stable combustion, just adopt the material of high thermal conductivity and keep the reactor adiabatic.

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Author(s): Jingyu Ran Dexiang Yang and Li Zhang

Keywords

Reactor material, convective heat transfer coefficient, low concentration CH4, catalytic partial oxidation, numerical investigation, oxidation

 
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