Stepanova O. Intensification of heat exchange processes during thermal contact heating and melting of hydrocarbon mixtures

The dissertation is devoted to the problems of intensification heat exchange processes of heating and melting hydrocarbon mixtures when using the thermal contact melting method to eliminate the shortcomings of existing methods and create domestic innovative equipment. In order to intensify the heating and melting processes, a method of melting hydrocarbon mixtures due to contact and convective heat transfer with forced melt removal has been developed. The influence of thermophysical parameters on the rate of heating and melting processes to determine the optimal parameters was investigated on the developed and manufactured stand. Research has been carried out to determine the viscosity, heat capacity, heat of phase transformation and thermal stability of hydrocarbon mixtures. To optimize and calculate the parameters of heating and melting processes, a mathematical model of heating and melting processes with forced removal of the melt has been developed, which allows calculations for various hydrocarbon mixtures. On the basis of the research carried out, a device for heating and melting viscous and low-heat-conducting substances Termobat-M has been developed and manufactured. When using the thermal contact heating method with the help of an immersion heater, it is possible to obtain the required amount of the product that melts, reduce the time for obtaining the melt and reduce energy consumption. The tests carried out on an industrial model and factory tests on the territory of Ternopharm LLC showed a high efficiency of the installation, since it was possible to melt 200 kg of petroleum jelly in 2,5...3 hours. Based on the results of factory tests, the Ternopat-M unit was commissioned at Ternopharm LLC in Ternopil.