Patent ID: 6044902
Filing Date: 2000-04-04
Classification: F25J,F28D,F28F,Y10S

Abstract:
A heat exchanger cryogenic air separation system combination, comprising:a first heat exchange unit including a first segment and a second segment, for receiving a flow of at least one cryogenic product from an air separation system and for channeling said flow in a first direction along said first segment and said second segment;a second heat exchange unit comprising first and second portions, said first portion in heat exchange communication with said first segment and said second portion in heat exchange communication with said second segment, (i) said second portion receiving a flow of air and channeling said flow of air in a counterflow direction to flow of said at least one cryogenic product in said second segment and (ii) said first portion arranged to enable flow therethrough to be a crossflow in said first segment, said first portion receiving at least one process cryogenic liquid from said air separation system and providing a crossflow thereof with respect to flow of said at least one cryogenic product in said first segment, to achieve a subcooling of said at least one process cryogenic liquid; and a subcooling unit comprising a third portion and a fourth portion, said third portion in heat exchange communication with said first segment and said fourth portion in heat exchange communication with said second segment, (i) said fourth portion receiving a flow of product gas from said air separation system and channeling said flow of product gas in a co-flow direction to flow of said at least one cryogenic product in said second segment and (ii) said third portion arranged to enable flow therethrough to be a crossflow in said first segment, said third portion receiving at least one process cryogenic liquid from said air separation system and providing a crossflow thereof with respect to flow of said at least one cryogenic product in said first segment, to achieve a subcooling of said at least one process cryogenic liquid.