METHOD AND APPARATUS FOR SEPARATION OF HELIUM-3 FROM HELIUM-4 BY MEANS OF A CRYOGENIC PROCESS
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Jun 8, 2022
filing date -
Jun 14, 2021
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Abstract
The invention provides a method for recovering 3-Helium (3He) from natural Helium (He), comprising the following steps: supplying the feed stream comprising natural liquid helium from an appropriate liquid helium source; introducing a feed stream into a rectification column system; condensing at least a first portion of a vapour stream comprising 3He enriched Helium in the intermediate section of the rectification system, condensing at least a second portion of a vapour stream comprising 3He enriched Helium in the upper section of the rectification system by heat exchange with colder liquid Helium; merging and compressing of the low-pressure vaporous streams; withdrawing an overhead stream comprising 3He enriched Helium from a top section of the rectification system as a product; withdrawing a bottom stream comprising 3He depleted Helium from a bottom section of the rectification system; withdrawing of a vaporous helium stream from the lower part of the rectification system.
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