Improving the nozzle contact devices of mass transfer equipment

Abstract

In recent years the number of studies concerning new nozzle contact devices for mass transfer and heat and mass transfer devices has increased significantly. The authors analyzed the advantages and disadvantages of various irregular and regular types of nozzle contact devices. The main directions of research are described, which make it possible to increase the energy and resource efficiency of such processes by improving contact devices by technological and constructive methods. Regular helicoid-structural nozzles with variable laying geometry are considered. The influence of the height of the deflection and perforation of such nozzles on the hydraulic resistance and mass transfer characteristics is analyzed. Special attention is paid to combined contact devices. Combined contact devices in the form of vertically mounted blocks of corrugated sheets with spacers of horizontally stacked screw elements have been studied. A comparison of the heat and mass transfer efficiency of such combined nozzles with standard structured nozzles has been carried out. The ways of improving the attachment contact devices are outlined.