摘要:The system of material and energy balance equations to calculate the steady-state operation of energy-technological unit for low-temperature separation of multicomponent hydrocarbon mixtures formed during the gasification of waste is given. The aim of this research is a mathematical description of the separation processes of multicomponent hydrocarbon mixtures formed during waste gasification by the system of closing equations and determination of mass portions of hydrocarbon gas mixture components. To achieve the aim of research, mathematical models for each individual functional elements of the unit are developed and the values of controlled parameters (temperature, pressure, mass flow rate and mass fraction of hydrocarbon gas mixture components) are determined in each control section by the method of successive approximations. Component composition of the streams is obtained: one – the fuel gas suitable for the maintenance of the waste gasification process, the other two – compressed product (analogue of automotive compressed natural gas).