Process for recovery of butene-1 from mixed C/sub 4/ hydrocarbons
Patent
·
OSTI ID:6313264
A process is described for the production of butene-1, which process comprises the steps of: (a) contacting a mixed C/sub 4/ feedstream comprising isobutylene, isobutane, normal butane, butane-2 and butene-1 and an alcohol with an etherification catalyst maintained at etherification promoting conditions in a reaction zone, and producing a reaction zone effluent stream comprising normal butane, butane-2, butene-1, isobutene and a C/sub 4/-plus ether; (b) separating the reaction zone effluent stream in a first fractionation zone into a net overhead stream comprising butene-1 and isobutane and a net bottoms stream comprising normal butane, butene-2 and the ether, with the net bottoms stream having a hydrocarbon concentration above 10 mole percent; (c) recovering the net bottoms stream as a first product stream; and, (d) separating the net overhead stream in a second fractionation zone into a second product stream rich in isobutane and a third product stream rich in butene-1.
- Assignee:
- UOP Inc., Des Plaines, IL
- Patent Number(s):
- US 4797133
- OSTI ID:
- 6313264
- Country of Publication:
- United States
- Language:
- English
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