METHOD OF CLEANING CARBON DIOXIDE FROM LOW-BOILING IMPURITIES Russian patent published in 2001 - IPC

FIELD: food technologist and other fields of engineering. SUBSTANCE: in order to prepare desired stream of steam in rectification column, method comprises using some stream of original mixture taken off into column vaporizer directly after last compressor stage without precooling. Supply of some original mixture into vaporizer after last compressor stage makes it possible to maintain high temperature head between boiling still bottoms and stream of original mixture being cooled or condensed in vaporizer tubes in column still. This circumstance reduces amount of stream directly into vaporizer and decreases heat- transfer subface of said stream. EFFECT: more efficient purification method. 7 cl, 3 dwg