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Calculation of optimal design of heat-mass transfer separation vortex trays

Journal: Journal of Engineering Sciences (Vol.1, No. 1)

Publication Date:

Authors : ; ;

Page : B1-B7

Keywords : vortex tray; heat-mass transfer separation element (HMTSE); computer simulation; optimization;

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Abstract

Growing interest in the use of contact stages of vortex type is due to their high efficiency. Using vortex and highly turbulent flows allow the reduction of size and amount of workspace of an apparatus due to intensification of heat-mass transfer processes. Latest analysis research in the field of design improvement of contact devices shows that in modern technologies drying and purification of natural gas are increasingly using mass transfer vortex trays with different ways of creating swirling flows (on canvas tray and other elements). Use of vortex contact devices significantly reduces the amount of liquid entrainment, decreases the flow resistance and increases the surface of contact phases. In this work the method of the optimization calculation of heat and mass transfer- separation element (HMTSE) of vortex trays is examined. Criteria of selecting optimal designs of tray elements for gas cleaning are shown. A computer program for calculating the optimal design of the vortex stage gas cleaning is presented. Research object – vortex tray with HMTSE for gas cleaning processes. Research subject – hydrodynamic and technological conditions for the functioning of the vortex tray with HMTSE. To the base of program «Vortex tray» the mathematical model, considering the influence on the size of the HMTSE of technological parameters of the columnar apparatus, is put. . The hydrodynamics influence of the gas flow and physicochemical properties of the liquid on the size of HMTSE is investigated. On the basis of analytical relationships optimization design calculation of vortex tray with HMTSE is held. Results of the graphic dependences, based on computer calculations, which allow the influence of the liquid amount, its velocity, thickness and other characteristics on the size of HMTSE are obtained. Computer simulation results is allowed for designing of the vortex tray with optimal design and determining the range of the effective work in different hydrodynamic regimes without expensive physical experiment. Prospects for further research are: study of separation and heat-mass transfer characteristics of the vortex tray with HMTSE for gas cleaning.

Last modified: 2016-11-06 16:07:41