Process for producing olefins

Details Process for producing olefins Process for producing olefins

2008-04-22

2008-04-22

Caldarola, Glenn (Department: 1797)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By plural serial diverse separations

C585S802000, C585S833000, C585S638000, C585S639000, C585S640000

Reexamination Certificate

active

11090422

ABSTRACT:
A process is described for producing olefins from a vapor product stream from an oxygenate to olefin conversion reaction, the vapor product stream comprising C2to C4olefins, C5+ hydrocarbons, at least one oxygenate and water. In the process, the vapor product stream is cooled to remove water therefrom and produce a first vapor effluent stream. The first vapor effluent stream is then cooled and compressed to produce a condensed liquid effluent stream comprising C5+ hydrocarbons and at least one oxygenate, and a residual vapor effluent stream comprising C2to C4olefins. At least part of the condensed liquid effluent stream is contacted with a liquid water-containing stream in a liquid-liquid contacting device to at least partly separate said condensed liquid effluent stream, or portion thereof, into an aqueous phase rich in said at least one oxygenate and an organic phase rich in said C5+ hydrocarbons.

REFERENCES:
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U.S. Appl. No. 10/720,505, filed Nov. 24, 2003 (Inventors—Keith Kuechler, Jeffrey L. Brinen, James Lattner, and Alan S. Gawlik), entitled “Recycling Oxygenate-Rich Streams In Oxygenate-To-Olefin Processes”.
U.S. Appl. No. 10/871,394, filed Jun. 18, 2004 (Inventors—Keith Kuechler, Jeffrey L. Brinen, and Philip Andrew Ruziska), entitled “Process For Producing Olefins”.
U.S. Patent Application Serial No. Awaited filed Jul. 1, 2004 (Inventors—Keith Kuechler, Jeffrey L. Brinen, and Philip Andrew Ruziska), entitled “Process For Producing Olefins”.

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