LIQUID OXYGEN REFINING METHOD AND DEVICE USED THEREIN

PROBLEM TO BE SOLVED: To provide a liquid oxygen refining method to bring impurity concentration into a ppb order. SOLUTION: Raw material liquid oxygen is introduced to a first fractionating tower 2, and a component having a boiling pint higher than that of oxygen is stored in the first fractionatin...

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Bibliographische Detailangaben
Hauptverfasser:	KIKUCHI NOBUNAO, KIYAMA HIROMI, MIYAMOTO ATSUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING MIXTURES BY PRESSURE AND COLD TREATMENT REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a liquid oxygen refining method to bring impurity concentration into a ppb order. SOLUTION: Raw material liquid oxygen is introduced to a first fractionating tower 2, and a component having a boiling pint higher than that of oxygen is stored in the first fractionating tower 2 in the liquid state. A component of a boiling point lower than oxygen is vaporized to take out with oxygen gas, and the component is introduced with oxygen gas to a second fractionating tower 20. At the second fractionating tower 20, the lower boiling point and oxygen are separated from each other, an oxygen gas is liquefied for storage, and this high purity liquid oxygen is taken out as product liquid oxygen.