TY - JOUR
T1 - Experimental and kinetic modeling study on the oxidation and laminar combustion characteristics of natural gas
AU - Chen, Xiaoxiao
AU - Zeng, Wen
AU - Zheng, Weilin
AU - Hu, Erjiang
AU - Ma, Hongyu
N1 - Publisher Copyright:
© 2023
PY - 2023/7/15
Y1 - 2023/7/15
N2 - The oxidation process in the flow tube reactor and the laminar combustion process in the constant volume combustion bomb of natural gas (0.9 methane/0.07 ethane/0.03 propane, mole fraction) were experimental tested. Furthermore, a reduced reaction mechanism (including 40 species and 189 reactions) of natural gas was developed based on the Aramco 2.0 mechanism by combining the path sensitivity analysis, rate of production analysis, reaction path analysis and the decoupling method. The results show that, in the oxidation process of natural gas, with the equivalence ratio increasing, the starting and ending temperatures for oxidation reaction of natural gas are increased, the reaction temperatures corresponding to CO generation and consumption are higher, and the amount of NO production is decreased. In the the laminar combustion process of natural gas, with the initial temperature and oxygen content increasing or the initial pressure, CO2 and H2O contents decreasing, the laminar flame speed is increased. Through comparing with the calculated results by the Aramco 2.0 mechanism and the corresponding test data, the reduced reaction mechanism can well predict the oxidation, ignition delay and laminar combustion characteristics of natural gas under various conditions.
AB - The oxidation process in the flow tube reactor and the laminar combustion process in the constant volume combustion bomb of natural gas (0.9 methane/0.07 ethane/0.03 propane, mole fraction) were experimental tested. Furthermore, a reduced reaction mechanism (including 40 species and 189 reactions) of natural gas was developed based on the Aramco 2.0 mechanism by combining the path sensitivity analysis, rate of production analysis, reaction path analysis and the decoupling method. The results show that, in the oxidation process of natural gas, with the equivalence ratio increasing, the starting and ending temperatures for oxidation reaction of natural gas are increased, the reaction temperatures corresponding to CO generation and consumption are higher, and the amount of NO production is decreased. In the the laminar combustion process of natural gas, with the initial temperature and oxygen content increasing or the initial pressure, CO2 and H2O contents decreasing, the laminar flame speed is increased. Through comparing with the calculated results by the Aramco 2.0 mechanism and the corresponding test data, the reduced reaction mechanism can well predict the oxidation, ignition delay and laminar combustion characteristics of natural gas under various conditions.
KW - Laminar combustion characteristics
KW - Natural gas
KW - Oxidation characteristics
KW - Path sensitivity analysis
KW - Reduced reaction mechanism
UR - https://www.scopus.com/pages/publications/85150297255
U2 - 10.1016/j.fuel.2023.128019
DO - 10.1016/j.fuel.2023.128019
M3 - 文章
AN - SCOPUS:85150297255
SN - 0016-2361
VL - 344
JO - Fuel
JF - Fuel
M1 - 128019
ER -