Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1983-06-29
1984-10-30
Hart, Charles
Gas separation
Means within gas stream for conducting concentrate to collector
55 51, 55 94, 203 42, 208341, B01D 4712, B01D 316
Patent
active
044798121
ABSTRACT:
A continuous fractionation technique is provided for recovering ethylene from an olefinic feedstock comprising C.sub.3.sup.+ higher olefins. This technique provides methods and means for contacting the olefinic feedstock in a counter current sorption tower with a liquid sorbent stream comprising C.sub.6.sup.+ gasoline range hydrocarbons under process conditions to selectively sorb substantially the entire C.sub.3.sup.+ olefin components from the feedstock, withdrawing an ethylene-rich vapor stream from the sorption tower and further contacting the ethylene-rich stream with a distillate range liquid hydrocarbon stream in a sponge absorber to purify the ethylene stream. Typically, the olefinic feedstock consists essentially of volatile hydrocarbons, and preferably comprises about 10 to 50 mole % ethylene and 10 to 50 mole % propene. Purified ethylene product may be recovered having an average molecular weight not greater than 28.5 under non-cryogenic conditions.
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Hsia Chung H.
Owen Hartley
Wright Bernard S.
Gilman M. G.
Hart Charles
McKillop A. J.
Mobil Oil Corporation
Wise L. G.
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