Danyliuk O. Mass exchange in processes of dissolution in disperse material layer

In the research there are presented theoretical and experimental investigations of hy-drodynamics, kinetics, and heat and mass exchange processes for using of scientifical-ly proved parameters of dissolution processes fulfilment with using of compressed air energy. It was determined, that adding of chemically inertial mixing additives positively influ-ences on the polydisperse mixture dissolution process kinetics, reducing its duration and, correspondingly, energy consumption, by means of the partial avoiding of solid phase displacement into foam layer. Also, it was determined the maximum permissi-ble economically feasible consumption, by which preserves intensive mass exchange between solid and liquid phase. Based on the experimental investigations and calculated data it was determined the value of mass deduction coefficient during dissolution of polydisperse mixture of benzoic acid on various compressed air consumption, and generalized the dependency of mass deduction coefficient from the solution concentration with sufficient for prac-tical calculations precision.