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Modeling of NOx conversion during combustion under high CO2 concentration using detailed chemical kinetics by Ran Zhao; Hao Liu; Xiaojiao Zhong; Zijian Wang; Han Hu; Jianrong Qiu is a Engineering article available to read on EtoBox.

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Combustion of fuels under enhanced oxygen atmospheres has been well investigated over the past decades in various types of combustors, varying from diesel engines to coal-fired boilers. Most studies have found significantly lower NO x emissions during Oxy-coal combustion. In this paper, NO x combustion chemistry under O 2 /CO 2 atmosphere as well as air atmosphere was studied using detailed kinetic model. A suitable reaction mechanism was chosen based on the comparison between the calculation result and the experimental data. The influence of various parameters (temperature, CO 2 concentration) on NO x conversion was investigated. The chemical effects of high CO 2 concentration on NO formation and destruction process was studied. On the basis of investigations through elementary chemical reactions, it can be concluded that high CO 2 concentration play a pronounced role on NO x conversion process. Moreover, the dominant reaction steps contribution to production and destruction of NO as well as the most important reactions for NO reduction under different atmospheres were discussed.

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Author

Ran Zhao; Hao Liu; Xiaojiao Zhong; Zijian Wang; Han Hu; Jianrong Qiu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-3820)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)