Zavialov V. Scientific substantiation and apparatus design of vibroextraction process in the food indus-try

The dissertation solves an important scientific and technical problem, namely - the devel-opment of scientific foundations for designing and improvements of vibroextraction processes and their technological implementation particularly in food industry. These scientific founda-tions allow to determine the optimal designing and technological parameters of vibroextracting units along with the optimal regimes of their operation. The importance of the development of such scientific methodology which helps to substantiate and implement the most rational calcu-lation methods of operating and design parameters, applicable for the processes of periodic and continuous vibroextraction of herbal and plant raw materials in food and other adjacent indus-tries, has been substantiated. Within the dissertation, the methodology of the mathematic mod-eling of vibroextraction processes along with the methodology of experimental evaluation of mass transfer efficiency, and evaluation of hydrodynamic structure have been developed. The proposed methodology has been designed based upon the phenomenon of unsteady mass trans-fer and hydrodynamics. The research results of spreading of flow patterns of pulsating jets that are generated by vibromixing elements within the volume of vibroextractor have been formu-lated. Scaling of the formulated results based upon the spatiotemporal correlation has been ana-lyzed: the structure of multiphase flows, countercurrent phase separation within a continuous process, mass transfer modes within the periodic and continuous processes within the whole scale. For each parameter a generalization has been carried out and thus included within the proposed mathematical model. Realized research results have formed the bases for the devel-oped engineering calculation methods which is intended for carrying out design calculation vi-broextration applicable in food industry. The methodology allows creating highly productive energy saving vibroextractor of periodic and continuous action to be used for solid-liquid sys-tems with insignificant difference of phase densities. Based upon the results above, the efficient technological equipment and schematics for food and adjacent industries have been created and their feasibility has been substantiated.