Homogeneous Combustion of Fuel Ultra-Lean Methane–Air Mixtures: Experimental Study and Simplified Reaction Mechanism
Homogeneous Combustion of Fuel Ultra-Lean Methane–Air Mixtures: Experimental Study and Simplified Reaction Mechanism
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燃料超贫甲烷-空气混合物的均质燃烧：实验研究和简化的反应机理
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发表时间：
2011
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影响因子：
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通讯作者：
D. Che
中科院分区：
文献类型：
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作者：
Yikun Wang;Yinhe Liu;Qi Cao;Chang’an Wang;D. Che
近年来，通风空气甲烷（VAM）的使用越来越受到关注。对超贫燃料甲烷-空气混合物在填充和未填充整体式反应器中的均质燃烧进行了实验研究。实验结果表明，甲烷氧化遵循连续反应模式。在反应过程中，虽然少量CH 4在低温下可能直接氧化为CO2，但大部分CH 4作为中间产物氧化为CO，然后在高温下进一步氧化为CO2。实验结果还表明，整体柱的存在对甲烷的燃烧有明显的影响。增大比表面积和减小通道直径都可以促进甲烷燃烧。然而，非常小的直径可能导致燃烧的熄灭。此外，还发现均质燃烧的影响对催化回流反应器的性能影响不可忽略。
The use of ventilation air methane (VAM) has attracted more and more attention in recent years. The experimental investigation on homogeneous combustion of fuel ultra-lean methane–air mixtures is carried out in reactors packed with and without a monolith. The experimental results show that the methane oxidation follows a consecutive reaction scheme. In the reaction process, although a little CH4 may be directly oxidized to CO2 at low temperatures, most CH4 is oxidized to CO as the intermediate product and then further oxidized to CO2 at high temperatures. The present experimental results also show that the presence of a monolith has an obvious effect on the combustion of methane. The methane combustion can be enhanced by both expanding the specific surface area and decreasing the diameter of the monolith channel. However, an extremely small diameter may lead to the quenching of combustion. Moreover, it is found that the effect of homogeneous combustion cannot be neglected for the catalytic flow reversal r...