Apparatus and method for separating a gas rich in CO2 by distillation and / or partial condensation at subambient temperature

摘要

In a process for separating a supply stream comprising CO2, a gas (7) derived from this stream partially condenses in a heat exchanger (12) in which the supply stream flows in tubes or between plates, the tubes or plates being immersed in a bath of liquid CO2 at a temperature below -43 ° C which vaporizes partially, at least two thirds of the liquid of a separation system downstream of the heat exchanger being sent to the bath. Figure of the abstract: Fig. 1