Abstract: A rectification column for multi-component mixture separation with internal heat and mass exchange, which ensures a heat and mass exchange in the film mode with internal reflux generation along the whole length of heat and mass exchange tubes and which allows for an increased efficiency, is proposed. The rectification column includes the rectifying/enriching section with the heat and mass exchange in its tubular and annular spaces being topped by a heat carrier distributor with a distributor chamber (17) on top of the heat carrier distributor in such a way that a higher pressure of fluid heat carrier in the distributor chamber (17) than in the annular space is allowed. The design of the distributor allows to separate an upper outlet for heat carrier vapors and a lower outlet for liquid heat carrier from the annular space completely from the fluid supply of fluid heat carrier in the distributor chamber. A feed-in device allows the multi-component mixture to enter the tubular spaces from below.

Abstract: A rectification column for multi-component mixture separation with internal heat and mass exchange, which ensures a heat and mass exchange in the film mode with internal reflux generation along the whole length of heat and mass exchange tubes and which allows for an increased efficiency, is proposed. The rectification column includes the rectifying/enriching section with the heat and mass exchange in its tubular and annular spaces being topped by a heat carrier distributor with a distributor chamber (17) on top of the heat carrier distributor in such a way that a higher pressure of fluid heat carrier in the distributor chamber (17) than in the annular space is allowed. The design of the distributor allows to separate an upper outlet for heat carrier vapors and a lower outlet for liquid heat carrier from the annular space completely from the fluid supply of fluid heat carrier in the distributor chamber. A feed-in device allows the multi-component mixture to enter the tubular spaces from below.

Abstract: The invention relates to a compact rectifying unit for separation of mixed fluids using for heat transfer purpose a fluid heat carrier and its vapours on one of the sides of heat and mass exchanging walls. In order to increase the efficiency of the heat and mass exchange process, the heat and mass exchange tubes of the rectifying part and/or of the evaporator part have means to provide irregular/varying amounts of heat transfer between the inside and the outside of tube wall along the height of the heat and mass exchange tubes. This allows for a reduction in the rectification column height by 3-10 times.