Cryogenic station

Details Cryogenic station Cryogenic station

1993-07-07

1994-12-20

Kilner, Christopher

Refrigeration

Storage of solidified or liquified gas

With vapor discharged from storage receptacle

62 502, 62 504, 62 505, F17C 902

Patent

active

053737016

ABSTRACT:
A cryogenic station for delivering a cryogen substantially free of higher boiling impurities. The cryogenic station includes an insulated main tank and an auxiliary tank. Liquid stored in the main tank and pressurized by a pressure building circuit is driven into the auxiliary tank. Cryogenic vapor formed in the auxiliary tank is warmed to ambient temperature by an external heat exchanger and is then recirculated back to an internal heat exchanger located within the auxiliary tank. The internal heat exchanger is configured such that a portion of the cryogen driven into the auxiliary tank is vaporized to form the cryogenic vapor and a remaining portion of such cryogen is left within the auxiliary tank to substantially retain the higher boiling impurities in a solidified state. As such, the cryogenic vapor is substantially free from the impurities when delivered as a product stream.

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