METHOD AND APPARATUS FOR CRYOGENIC SEPARATION OF A SYNTHESIS GAS BY PARTIAL CONDENSATION

摘要

In a process for separating a synthesis gas (1,5) containing hydrogen, carbon monoxide, the synthesis gas is cooled in a heat exchanger (E), partially condensed and sent to a first separator of phases (9) for producing a hydrogen-enriched gas (7) and a hydrogen-depleted liquid (11), the hydrogen-depleted liquid is sent at least partly at the top of a depletion column (13), at the at least a portion of the bottom liquid (17) of the depletion column is vaporized at least partially in the heat exchanger and a carbon monoxide enriched product (15) is derived from at least a portion of the liquid of the vessel from the column of exhaustion.