Numerical modelling of evaporative cooling and phase transitions in a chemical reactor

Phase transitions play an important role in the engineering industry. For example, the process of a liquid fraction evaporation, allows a great amount of heat to be transferred in a short time. This process has found wide application in chemical production. Mixtures of liquids are transferred into chemical reactors with reduced pressure and the mixture is cooled by evaporation. In the article, the process of cooling the liquids mixture on the example of solving a modelling problem of the chemical production technological process is considered. A mathematical model of hydrodynamic and gas-dynamic processes in a chemical reactor is constructed. The work of the system at different technological modes and mixture flow rates is evaluated. The mixture particles deposition process on the pipelines adjacent to the reactor is considered. A coupled CFD-DPM modelling algorithm has been applied within the research. The novelty of the method lies in the fact that the proposed algorithm allows describing the behavior of the mixture in the heat exchanger, as well as considering the process of particle settlings on the pipelines. The research results can be applied to solve problems associated with the flow of multiphase flows and phase transitions, as well as in optimizing the operation of chemical manufacturing.