APPARATUS AND INTEGRATED PROCESS FOR SEPARATING A MIXTURE OF CARBON DIOXIDE AND AT LEAST ONE OTHER GAS AND FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

摘要

An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation comprises a unit (CPU) for separating a gaseous mixture comprising carbon dioxide and at least one other gas in order to produce a carbon dioxide-enriched gas and a carbon dioxide depleted gas and an air separation unit (ASU) for separating air by cryogenic distillation in order to produce at least one nitrogen-enriched gas stream (17), a water cooling tower that operates by direct contact and also a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line (15) for withdrawing cooled water from the tower and means for cooling the air (1) upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.