REGULAR SPRAY TYPE TIPS IMPROVEMENT TO REDUCE SEDIMENTS IN THE MASS-EXCHANGE APPARATUS

Abstract

The article is devoted to the study of column apparatus contact devices and the creation of effective attachments for gas - liquid systems. According to the results of the studies, taking into account the updated data on hydraulic resistances, a new regular nozzle for mass transfer processes has been developed, which effectively works in polluted envi- ronments. In the developed nozzle, the rows of elements with the pitch refined relative to each other and with the slit gaps between the baffle plate in the corner elements are optimally selected. Experimental studies were carried out on the developed laboratory bench, the structural elements of which are made of Plexiglas and arranged at a certain angle to each other. Studies of the liquid and gas phases allowed to establish the numerical values of the smallest hydraulic resistance among the angle nozzles. On the basis of experiments, the viability of the created corner-type struc- tures, which provides conditions for reducing sediments, is proved. On the basis of aero-hydrodynamics laws, physical and numerical models of flows in the apparatus with regular nozzles of various types have been developed taking into account the deposition of contaminants. Experimental studies were carried out on the physical model in order to determine the liquid entrainment, dynamic holding capacity and resist- ance coefficient, model verification and parameters of a regular corner nozzle with U-shaped bump stops optimization were performed to ensure self-cleaning of mass transfer elements, which allowed for optimal func- tioning of the column apparatus with a minimum level of deposits. The parameters characterizing the stable nozzle operation and ensuring the self-cleaning of its elements from mechanical and paraffin-resin deposits are established, which made it possible to increase the interrep- air time of the mass-exchange apparatus.