期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 33, 页码 15068-15077出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.05.276
关键词
Oxy-fuel combustion; Laminar flame speed; Chemical effect; Carbon dioxide; Methane oxidation
资金
- National Natural Science Foundation of China [51274066]
- National Key Technologies R&D Program of China [2013BAA03B03]
The chemical effect of CO2 on the laminar flame speeds of oxy-fuel mixtures was related to the oxygen concentrations and equivalence ratios. In order to study the chemical effect of CO2, we have adopted a premixed oxy-methane flame in the condition of various oxygen concentrations and equivalence ratios. Results show that the chemical effect was smaller than the thermal effect but much bigger than the radiative effect in the calculation domain. The chemical effect of CO2 changed a lot with the oxygen concentrations and equivalence ratios. The effect of third body efficiency of CO2 on the laminar flame speeds of oxymethane mixtures was discussed. The reaction rate and sensitivity analysis were performed to identify the important reactions which have a third body efficiency of CO2. In addition, the contributions of the elemental reactions were studied with the sensitivity analysis. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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