Partial oxidation of methane in a reverse flow porous media reactor. Water admixing optimization

被引：40

作者：

Dobrego, K. V. ^{[1
]}

Gnezdilov, N. N. ^{[1
]}

Lee, S. H. ^{[2
]}

Choi, H. K. ^{[2
]}

机构：

[1] Natl Acad Sci Belarus, AV Luikov Heat & Mass Transfer Inst, Minsk 220072, BELARUS

[2] KIER, Taejon 305343, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 20期

关键词：

Partial oxidation; Methane; Hydrogen; Filtration combustion; Numerical simulation; Porous media; Optimization;

D O I：

10.1016/j.ijhydene.2008.07.111

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of the addition of steam on methane-air partial oxidation in a reverse flow porous media reactor is investigated numerically. The model is validated via comparison with the experimental data obtained without steam addition. The model of chemical kinetics includes 6- component overall model and GRI 3.0 gas phase methane oxidation kinetics. it is shown that hydrogen concentration in the product gas may be increased by 0.5-1% and the methane-to-hydrogen conversion ratio by 10-15% by means of adding steam to a working mixture. The optimum equivalence ratio remains the same as in the water free case. Steam concentration which maximizes H-2 is in the range of 5-10%; steam concentration which maximizes the conversion ratio is in the range of 20-50%. The role of the thermal insulation of the reactor and of the working gas preheating in this aspect is shown quantitatively. The results may be utilized for design of porous media reactors and process optimization. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：5535 / 5544

页数：10

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