Single-unit gas separation process having expanded, post-separation vent stream
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United States of America Patent
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Dec 1, 2020
Grant Date -
Oct 11, 2012
app pub date -
Nov 14, 2011
filing date -
Apr 8, 2011
priority date (Note) -
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Abstract
A process comprising separating a hydrocarbon feed stream into a natural gas-rich stream and a liquefied petroleum gas (LPG)-rich stream using process equipment comprising only one multi-stage separation column, wherein the natural gas-rich stream has an energy content of less than or equal to about 1,300 British thermal units per cubic foot (Btu/ft3), and wherein the LPG-rich stream has a vapor pressure less than or equal to about 350 pounds per square inch gauge (psig). A process comprising separating a hydrocarbon feed stream into a top effluent stream and a LPG-rich stream, and subsequently expanding the top effluent stream to produce a natural gas-rich stream. An apparatus comprising a multi-stage separation column configured to separate a hydrocarbon feed stream into a top effluent stream and a LPG-rich stream, and an expander configured to expand the top effluent stream and produce a natural gas-rich stream.
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