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US 6,178,776 B2Granted
Cryogenic indirect oxygen compression system
AssigneePraxair Technology, Inc.
InventorsKevin William Mahoney, Dante Patrick Bonaquist, Walter Joseph Olszewski
Life of this patent
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Abstract
A system for producing pressurized oxygen gas from low pressure oxygen gas without the need for engaging an oxygen compressor wherein low pressure oxygen gas is condensed by indirect heat exchange with a multicomponent refrigerant fluid, passed through a liquid pump, and then vaporized against that same multicomponent refrigerant fluid.
Claims10
A method for producing pressurized oxygen gas comprising:
- (A) condensing low pressure oxygen gas by indirect heat exchange with vaporizing multicomponent refrigerant fluid to produce low pressure oxygen liquid and vaporized multicomponent refrigerant fluid;
- (B) pumping at least some of the low pressure oxygen liquid to produce pressurized oxygen liquid, and compressing the vaporized multicomponent refrigerant fluid to produce higher pressure multicomponent refrigerant fluid;
- and
- (C) vaporizing at least some of the pressurized oxygen liquid by indirect heat exchange with condensing higher pressure multicomponent refrigerant fluid to produce condensed higher pressure multicomponent refrigerant fluid and pressurized oxygen gas.
1 more element
Apparatus for producing pressurized oxygen gas comprising:
- (A) a heat exchanger, means for providing oxygen gas to the heat exchanger, a liquid pump, means for passing oxygen liquid from the heat exchanger to the liquid pump, and means for passing oxygen liquid from the liquid pump to the heat exchanger;
- (B) a compressor, means for passing multicomponent refrigerant fluid from the heat exchanger to the compressor, and means for passing multicomponent refrigerant fluid from the compressor to the heat exchanger;
- and
- (C) means for recovering product pressurized oxygen gas from the heat exchanger.
1 more element
Dependencies are inferred from the claim text.