Stability Limits of the Methane–Hydrogen Mixture Combustion

Flame stability limits controlled by flame blowout and flashback were calculated and experimentally determined in a model burner device with various hydrogen addition to a premixed methane–hydrogen flame. The experimental data obtained are used to verify the mathematical model of methane–hydrogen mixture combustion, considering the dependence of the laminar flame propagation speed on temperature, pressure, and composition of air-fuel mixture (AFM), and also using the verified chemico–kinetic Wang 2018 mechanism. It is shown that the mathematical model of methane–hydrogen mixture combustion predicts flame blowout and flashback upstream with satisfactory accuracy in comparison with experimental data. It is shown that the mathematical model of methane–hydrogen mixture combustion predicts flame blowout and flashback limits upstream, observed in the model burner device with satisfactory accuracy, and can be used to determine stable operation limits of developed combustion chambers of gas turbine power plants transferred to hydrogen–containing mixtures.