Study of hydrodynamics features in the apparatuses with movable nozzle

Apparatuses for the heat and mass transfer processes must be designed so that they have a maximum contact sur- face. Classification of heat-mass exchange apparatuses provides geometric features of the apparatus and the hydrodynamic condition they create. However, the main trend which remains dominant in the design of such apparatus is to create a thin film of liquid on the surface of the nozzle. The work was aimed at choosing the solution in which the MN of the heat-mass exchange apparatuses can be used to implement the contact handling process of gases and liquids with density values clarification of the nozzle elements (ρnе) and the column dynamic height (Нст) and obtain the specified calculated dependences which describe the hydrody- namics and mass transfer in the apparatuses with a movable nozzle, that is to create bases for engineering calculations. Research methods were theoretical study and experimental studies on heat and mass transfer devices with movable nozzle. The best ranger for mass transfer processes implementation is that of ρneІІ (ρ = 200-700 kg/m3), which is distin- guished by a wide working area according to wg, acceptable values of fluid withdrawal and a relatively small dynamic layer height. Within the described mode, we can distinguish the area wg @ 4.7-6.0 m/s, where there is no dependence of Hp on wg. Specified calculated dependence obtained which describes the hydrodynamics and heat and mass transfer in the apparatuses with a movable nozzle.