Method and apparatus for cryogenic fractionation of a gaseous feed
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United States of America Patent
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Sep 1, 1987
Grant Date -
N/A
app pub date -
Sep 25, 1985
filing date -
Sep 28, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method and an apparatus for cryogenic fractionation of a gaseous feed comprising a contact purifying-refrigerating column into the bottom of which is injected a partially condensed gaseous feed, the said column producing in its head portion a residual gas and in its bottom portion a liquid which is injected into a fractionating column producing in its head portion a distillate which is at least partially condensed and injected into the head portion of the column to thus recover in the bottom liquid of this column the heavy compounds contained in the vaporized fraction of the gaseous feed.
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