High ethane recovery from a ryan/holmes additive recovery column
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United States of America Patent
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Issued Date -
Mar 13, 2003
app pub date -
Sep 4, 2002
filing date -
Sep 4, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for separating a high ethane-content product from a high methane-content feed stream including the steps of introducing a high methane-content feed stream into a first distillation column containing a plurality of vapor-liquid contact devices and generating a first bottoms stream, and introducing the first bottoms stream into a second distillation column containing a plurality of vapor-liquid contact devices and generating a second bottoms stream. Additional steps include recovering an additive stream from the second bottoms stream and injecting the additive stream into the first distillation column, and recovering a high ethane-content product from the second distillation column.
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