CONFIGURATIONS AND METHODS FOR OFFSHORE NGL RECOVERY
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United States of America Patent
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Issued Date -
Mar 6, 2014
app pub date -
Aug 29, 2013
filing date -
Aug 30, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A natural gas two-column processing plant allows for recovery of at least 95% of C4 and heavier hydrocarbons, and about 60 to 80% of C3 hydrocarbons from a rich feed gas stream in which the first column (absorber) operates at a higher pressure than the second column, with the absorber receiving a compressed gas from the second column, and a turboexpander discharging a two-phase stream to the top of the absorber. Most typically, contemplated configurations and methods operate without the use of external refrigeration.
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