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US 11,719,387 B2Granted
Liquid conditioning for cryogen vessel fill station
AssigneeMesser Industries USA, Inc.
InventorsSimon J. Shamoun, Isaiah Edmonds
Life of this patent
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Abstract
A method for conditioning a liquid cryogen in a tank includes reducing a pressure of the liquid cryogen in the tank for reducing a temperature of the liquid cryogen and condensing any vapor boil-off in the tank for reclaiming the liquid cryogen in the tank. The liquid cryogen may be selected from the group consisting of liquid nitrogen (LIN), liquid oxygen (LOX), and liquid argon (LAR).
Claims5
A method for conditioning a liquid cryogen in a tank, comprising:
- reducing a pressure of the liquid cryogen in the tank by venting vapor in the tank to atmosphere external to the tank to cool the liquid cryogen in the tank, wherein the pressure of the tank is reduced from 50 psig to 10 psig,
- withdrawing the liquid cryogen from the tank to a vaporizer,
- vaporizing the liquid cryogen with the vaporizer for providing vapor boil-off, and
- introducing the vapor boil-off from the vaporizer into the tank for re-pressurizing the tank with the vapor boil-off,
- wherein the reducing, the withdrawing, and the introducing steps condition the liquid cryogen in the tank to a new level lower than a liquid level of the liquid cryogen that existed in the tank before the reducing the pressure of the liquid cryogen in the tank.
2 more elements
Dependencies are inferred from the claim text.