Patent ID: 7588666
Filing Date: 2009-09-15
Classification: B01D,C10G,F28F,Y10S

Abstract:
1. A compact rectifying unit for separation of a mixed fluid, said compact rectifying unit comprising a rectifying tower or column comprising: a) an outer shell; b) means for a vapour phase output from the top of the tower or column; c) means for a fluid phase output from the bottom of the tower or column; d) tube gratings or plates, between which at least one heat and mass exchange tube of the tower or column is fixed, said tube gratings or plates keeping said heat and mass exchange tube(s) inside of said outer shell; e) means for evaporating said mixed fluid, said evaporating means comprising means for heating said mixed fluid; wherein: an internal space of said heat and mass exchange tube(s) is in fluid connection with said evaporator means; said tube gratings or plates, said heat and mass exchange tubes(s) and said outer shell define a tubular annulus between said outer shell and said heat and mass exchange tubes(s); the tubular annulus is filled by a fluid heat carrier and its vapours and is connected to a return condensator and to a means for warming said fluid heat carrier; said rectifying tower or column further comprising means for providing irregular amounts of heat transfer between an inside and an outside of a tube wall along a height of said heat and mass exchange tube(s) between the inside and the outside of said tube wall.