RESEARCH OF THE APPLICATION EFFICIENCY OF DIFFERENT CONSTRUCTIONS OF FLOW CAVITATION MIXERS

Abstract

The material which is accumulated for today about the application of hydrodynamic cavitation in technological processes makes it possible to determine the perspective areas of its use - in the processes of mass transfer, mixing, dissolution, dispersion and emulsification in the processing of liquid heterogeneous systems and the creation of modern energy-saving technologies.
 The purpose of this article is to study the effectiveness of the use of different designs of flow cavitation mixers for the treatment of liquid heterogeneous disperse systems and to identify the main industries for their use.
 Cavitational apparatus can be effectively used in performing such technological processes as mixing difficult to mix liquids, dissolving solids in liquids, obtaining stable, multicomponent high dispersion emulsions without using of stabilizers, dispersing suspensions in liquid-liquid systems, accelerating extraction and diffusion, and many others. Hydrodynamic cavitation can be used in technologies to produce lubricants, fuel materials, varnishes and paints, building materials, detergents, etc.
 Different designs of cavitation devices allow to obtain different forms of cavitation, different ways of obtaining it or their combination, depending on the purpose and field of use. Apparatus whose action is based on the use of hydrodynamic cavitation represent an effective equipment that accelerates technological processes in liquid media while significantly reducing the specific energy consumption.
 The structures of hydrodynamic cavitation devices provide multiple rearrangements of the velocity field and change the direction of fluid flow and mix components. The main feature of the devices is small dimensions with high performance. Distinctive features of this type of equipment are ensuring the continuity of the chemical-technological process and its high intensification, the possibility of realizing large quantities of deformations and strain of displacement, intensive hydrodynamic and cavitation effects, which results in high-quality mixing of components, intensification of diffusion processes, simplicity and reliability of hardware design. The economic efficiency of the application of hydrodynamic cavitational apparatus is determined by the low metal capacity of the equipment, low maintenance and operation costs compared with capacitive mixing equipment.