The jet and diesel fuels production line has been simulated using the universal simulating program ChemCad. The choice of the rectification process calculation module was substantiated. The Grayson-Streed and Lee Kesler models were used for the calculation of the thermodynamic system and the phase equilibrium of the multicomponent mixture. The model of an oil mixture distillation unit for jet and diesel fuels production has been developed. The temperature profile of the column was obtained; the optimization problem was solved by finding the minimum number of trays in the distillation column. As a result, the optimal reflux ratio and optimal feed tray were defined, allowing to minimize energy consumption. The energy balance of the distillation column has been determined and calculated.

An energy-saving scheme for the production of candied carrots has been developed. The developed scheme includes: washing of raw materials with 1 % NaHCO3 solution, reduction of water consumption for blanching, reduction of syrup consumption for saturation of raw materials with sugar. A new drying technology is introduced: candied fruits are dried in a variable temperature mode, namely: in the initial stages with a heat agent at a temperature of 70 °C, at the final stage – with a heat agent at a temperature of 20 °C. The process of modeling the traditional and energy-saving scheme of candied carrot production in the universal simulation software ChemCad is carried out. The simulation results are analyzed. It is proved that the total energy efficiency of the implemented technology is 340.4 MJ / h or 354.6 kJ / kg of finished product.