Heavy hydrocarbon processing in NGL recovery system
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United States of America Patent
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Dec 1, 2015
Grant Date -
Nov 21, 2013
app pub date -
Jul 19, 2013
filing date -
May 18, 2007
priority date (Note) -
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Abstract
A method for processing heavy hydrocarbons in an NGL recovery system is provided. In one embodiment, a feed stream is separated into a carbon dioxide recycle stream and a heavy hydrocarbon stream. The heavy hydrocarbon stream comprises carbon dioxide and natural gas liquids, and the heavy hydrocarbon stream comprises heavy hydrocarbons. The carbon dioxide recycle stream is separated into a purified carbon dioxide recycle stream and a natural gas liquids stream. The purified carbon dioxide recycle stream comprises the carbon dioxide, and the natural gas liquids stream comprises the natural gas liquids. In another embodiment, a set of process equipment comprises a first separator and a second separator. The first separator is configured to separate a feed stream into a recycle stream and a heavy hydrocarbons stream, and the second separator is configured to separate the recycle stream into a purified recycle stream and a natural gas liquids stream.
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