Storage enclosure, method and apparatus for producing carbon monoxide and/or hydrogen by means of cryogenic separation, including one such enclosure

A liquid storage enclosure, suitable for inclusion in a cryogenic separation apparatus, said liquid storage enclosure comprising;

• a) a chamber;
• b) a heat exchanger disposed inside the chamber;
• c) a barrier dividing the chamber into a first part and a second part;
• i) the heat exchanger disposed in the first part and the second part being arranged around the first part;
• ii) the barrier having a lower height than the height of the chamber, at least at certain points, for allowing liquid to pass from the first part to the second part over the barrier, when the enclosure is in service;
• d) means for sending liquid into the first part of the chamber;
• e) means for withdrawing liquid from the second part of the chamber;
• f) means for sending a fluid to the heat exchanger;
• and
• g) means for withdrawing a fluid from the heat exchanger.