Abstract: Modern installations of the chemical industry have significant reserves in the direction of increasing efficiency, productivity, and reducing energy consumption. One of the promising areas of development of column apparatus design is the use of high-performance contact devices. In research to evaluate the possible cost-effectiveness of the new random packing design, it is necessary to take into account both the change in process efficiency and the pressure drop in the layer. The analysis was carried out taking into account both indicators of existing data on the operation of devices with various configurations of nozzle bodies. The developments of recent years in the design of contact devices of irregular type were generalized and systematized. Variants of the random packing geometry and materials that can be manufactured for various chemical industries are analyzed. The development trends are identified, and the problems that arise along this path are outlined. It is shown that the development of designs goes towards complicating the geometry of the nozzles in order to more evenly distribute the liquid phase in the volume of the device and increase the efficiency of mass transfer due to prolonged contact of liquid and gas flowing down the surface of the nozzle, multiple updates of the contact surface in a wide range of loads. This direction is implemented by increasing the free volume of the contact element (97 − 99%). The operating mode of all known random packing In this case is film. The second direction is the introduction of new construction materials that provide increased adhesion properties of the random packing surface. Currently, the task of finding such new design solutions remains relevant.
Index terms: random packing, pressure drop, effective surface area, separation efficiency.


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