A 5-step reduced mechanism for combustion of CO/H₂/H₂O/CH₄/CO₂ mixtures with low hydrogen/methane and high H₂O content

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• 作者：Zacharias Marinou Nikolaou^a ; ^{zn209@cam.ac.uk} ; Jyh-Yuan Chen^b ; ^{jychen@me.berkeley.edu} ; Nedunchezhian Swaminathan^a ; ^{ns341@cam.ac.uk}
• 关键词：CO/H2/H2O/CH4/CO2 ; Reduced mechanism ; Skeletal mechanism ; Flame speed ; Ignition delay time ; Premixed
• 刊名：Combustion and Flame
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：160
• 期：1
• 页码：56-75
• 全文大小：1490 K

文摘

In this study a 5-step reduced chemical kinetic mechanism involving nine species is developed for combustion of Blast Furnace Gas (BFG), a multi-component fuel containing CO/H₂/CH₄/CO₂, typically with low hydrogen, methane and high water fractions, for conditions relevant for stationary gas-turbine combustion. This reduced mechanism is obtained from a 49-reaction skeletal mechanism which is a modified subset of GRI Mech 3.0. The skeletal and reduced mechanisms are validated for laminar flame speeds, ignition delay times and flame structure with available experimental data, and using computational results with a comprehensive set of elementary reactions. Overall, both the skeletal and reduced mechanisms show a very good agreement over a wide range of pressure, reactant temperature and fuel mixture composition.