Chemical Thermodynamics of the Vapor–Oxygen Gasification of Graphite

A thermodynamic analysis of the vapor–oxygen gasification and combustion of graphite with $\alpha$ variation of the oxidizer excess has been performed. Chemical reactions proceeding in the process of gasification and combustion, as well as components of flammable gases, which are the combustion products, have been determined. The channels of the distributing of the energy of exothermal and endothermal processes have been revealed. The energy of exothermal reactions compensates the endothermal effect of the reaction and increases the physical heat of the system. Expenditures on the endothermal reaction where flammable gases are produced are not irretrievable and transverse to the calorific power of the flammable gases. The effect of the oxidizer concentration on the adiabatic temperature at partial combustion of graphite has been analyzed. The thermal efficiency has been found as the ratio of the total thermal energy in the combustion of flammable gases and their physical heat to the spent energy, which is determined by the calorific power of graphite. The thermal efficiency is about $100\%$.