Fractional distillation of C.sub.2 /C.sub.3 Hydrocarbons at optimum pressures
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United States of America Patent
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Aug 7, 1984
Issued Date -
N/A
app pub date -
Apr 5, 1982
filing date -
Sep 4, 1981
priority date (Note) -
Expired
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Abstract
A method of recovering by distillation the separate components of a hydrocarbon gas mixture comprising ethylene, ethane, propylene and propane which comprises separating the ethylene and ethane as an overhead from a propylene and propane bottom in a first distillation tower at from about 400 to about 600 psia, separating ethylene and ethane as an ethylene overhead and an ethane bottom in a second distillation tower at from about 600 to about 700 psia, and separating propylene as an overhead from a propane bottom in a third distillation tower at from about 280 to about 300 psia is disclosed.
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