Back to results
US 5,026,936 AGranted
Enhanced production of propylene from higher hydrocarbons
AssigneeArco Chemical Technology, L.P.
InventorsDavid W. Leyshon, John A. Sofranko, C. Andrew Jones
Life of this patent
Estimating the term…
Abstract
The present invention provides a process for the preparation of propylene from C.sub.4 or higher feed by a combination of cracking and metathesis wherein higher hydrocarbon is cracked to form ethylene and propylene and at least a portion of the ethylene is metathesized to propylene.
Claims1
The method for the production of propylene which comprises:
- (a) cracking a C.sub.4 or higher olefin and/or paraffin hydrocarbon over a zeolite catalyst at conditions favoring production of ethylene and propylene to form a mixture comprised of ethylene, propylene and butene,
- (b) separating ethylene and butene from the step (a) reaction mixture,
- (c) metathesizing said separated ethylene and butene from the step (a) reaction mixture to form additional propylene, and
- (d) recovering propylene formed in step (a) and step (c).
1 more element
Dependencies are inferred from the claim text.