Carbon monoxide production method, involves drawing out carbon monoxide enriched liquid and waste gas respectively from tank and head of stripping column, and providing part of frigorie by injecting liquid nitrogen into column

摘要

The method involves cooling a mixture containing carbon monoxide and hydrogen in an exchange line (7), and partially condensing the mixture and sending the mixture to a phase separator (11). Liquid (15) from the separator is sent to a stripping column (23) after a partial condensation phase. Carbon monoxide enriched liquid (25) is drawn out from a tank of the stripping column, and a waste gas (51) is drawn out from a head of the stripping column. A part of frigorie necessary to carbon monoxide production is provided by injecting liquid nitrogen into the stripping column. An independent claim is also included for a device for producing carbon monoxide by cryogenic distillation.