Research on Methane Decomposition during Gas Reburning for NOx Reduction

Abstract:

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In order to discover main reaction mechanism of CH4 in NOx removal by methane reburning, reactions between CH4 and NOx were simulated from the point of reaction kinetics. Simulating result demonstrated that reaction temperature and excessive air coefficient were main factors influencing DeNOx efficiency. NO could be directly reduced by free radicals including H, HO2, HCCO and O. Firstly, NO was mainly reduced by HO2.Secondly,NO was mainly reduced by H. Hydrocarbon radicals such as CH3, CH2, C2H4, CH2O, C2H6, CH2CO, HCN, HCNO, HNCO were produced in reaction processes as intermediate products. Lots of free radicals were consumed or produced in reaction and led to concentration variation of NO. At the same time, NO could be directly reduced by hydrocarbon radicals such as CH3, CH2.Therefore, hydrocarbon radicals have important influence on removal efficiency of NOx during methane reburning.

Info:

Periodical:

Advanced Materials Research (Volumes 356-360)

Edited by:

Hexing Li, Qunjie Xu and Daquan Zhang

Pages:

1801-1806

DOI:

10.4028/www.scientific.net/AMR.356-360.1801

Citation:

H. P. Xiao et al., "Research on Methane Decomposition during Gas Reburning for NOx Reduction", Advanced Materials Research, Vols. 356-360, pp. 1801-1806, 2012

Online since:

October 2011

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Price:

$35.00

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