Distribution of local flow parameters at separation of liquid mixture under distillation on the structured packing at a periodic change in the drip point pattern

Abstract

The effect of non-stationary irrigation of a structured packing on distribution of flow parameters over the cross-section and height of a distillation column was studied using a controlled liquid distributor. We have determined the characteristic time of switching the valves of the liquid distributor at periodic sequential irrigation of two zones of the column cross-section, corresponding to the most effective suppression of stable large-scale maldistribution of the flow parameters in the packing layers, typical of stationary uniform irrigation. It is shown that application of dynamically controlled liquid distributor in the studied regimes of structured packing irrigation allows an improvement of the efficiency of mixture separation by 20%.