The high-pressure oxidation and pyrolysis characteristics of methanol were experimentally investigated using a flow reactor.On this basis,the published kinetic model of methanol chemical reaction was validated,and the oxidation characteristics of the methanol cracking gas were simulated for a wide range of cracking degrees.The results show that the high pressure can effectively promote the oxidation of the fuel.Blending of the methanol cracking gas can effectively reduce the formaldehyde emissions.The reactive radicals produced by methanol and its cracking gas accelerate the chemical reaction rate of the fuel,indirectly controlling the downstream chain branching reaction through HO2 radicals,generating a large number of OH radicals,and altering the sensitivity coefficients of the reactions in the formaldehyde consumption pathway.
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