Olefin recovery in a polyolefin production process
First Claim
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1. A method of producing olefins from oxygenates comprising:
- converting olefins in a purge stream in a polyolefin production process to an alcohol thereby producing an alcohol containing stream;
mixing an oxygenate feed stream with the alcohol containing stream; and
converting the mixed oxygenate feed stream and alcohol containing stream in the presence of an olefin forming catalyst to form an olefin product stream.
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Abstract
Disclosed is a method of recovering olefin from purge streams in a polyolefin production process. The method includes reacting a purge stream containing olefin and impurities with water in the presence of a hydrating catalyst to produce an alcohol containing stream. The impurities can include methane, ethane, butylenes, and hydrogen. The alcohol containing stream can be used to produce olefins in an oxygenate to olefin production process.
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Citations
7 Claims
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1. A method of producing olefins from oxygenates comprising:
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converting olefins in a purge stream in a polyolefin production process to an alcohol thereby producing an alcohol containing stream;
mixing an oxygenate feed stream with the alcohol containing stream; and
converting the mixed oxygenate feed stream and alcohol containing stream in the presence of an olefin forming catalyst to form an olefin product stream. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification