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The vibronic and electronic energy relaxation phenomena in the specific conditions of a gas turbine engine were investigated in this paper. The plasma–chemical mechanism has been augmented with the results of recent investigations of the processes that involve electronically and vibrationally excited species. The updated mechanism was employed for the computer simulation of plasma-assisted combustion of hydrogen–air and methane–air mixtures under high pressure and in the range of initial temperatures T  =  500–900 K. The updated mechanism was verified using the experimental data. The influence of electronically excited nitrogen on the ignition delay time was analyzed. The rate coefficient of the vibration–vibration exchange between N2 and HO2 was calculated as well as the rate coefficient of HO2 decomposition.

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The experimental and theoretical studies of the gasification of solid organic compounds by a melt technology were carried out for the two types of carbon-containing materials: slime and tar. The experimental works and the simulation showed that this gasification method can be used for the effective utilization of oilrefining and petrochemical-processing wastes with the simultaneous production of high-purity synthesis gas.

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