Method of separating CO.sub.2 from hydrocarbon gas
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United States of America Patent
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Dec 26, 2006
Issued Date -
N/A
app pub date -
Mar 9, 2004
filing date -
Oct 30, 2003
priority date (Note) -
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Abstract
A method of separating CO.sub.2 from a hydrocarbon gas inlet stream that is within predetermined pressure and temperature ranges including the steps of subjecting the inlet stream to fractional distillation providing a bottom product stream and a distillation overhead stream, passing the distillation overhead stream to a membrane unit producing a CO.sub.2 by-product stream and a hydrocarbon stream and chilling the hydrocarbon stream to produce a reflux liquid stream and a hydrocarbon gas product.
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