PROCESSES FOR PRODUCING POLYMER GRADE LIGHT OLEFINS FROM MIXED ALCOHOLS
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United States of America Patent
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Jan 26, 2017
app pub date -
Jul 20, 2016
filing date -
Jul 21, 2015
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Abstract
Processes for providing a high purity olefin product are described. The processes involve dehydrating a feedstream comprising a mixture of alcohols having 3 to 8 carbon atoms and forming a mixed olefin stream and a water stream, the mixed olefin stream comprising a mixture of olefins having 3 to 8 carbon atoms. The mixed olefin stream is separated into at least a C3 olefin stream comprising olefins having 3 carbon atoms and a C4-8 olefin stream comprising olefins having 4 to 8 carbon atoms. The C4-8 olefin stream is separated into a C4 olefin stream comprising olefins having 4 carbon atoms and a C5-8 olefin stream comprising olefins having 5 to 8 carbon atoms. At least one of the C3 olefin stream and the C4 olefin stream is purified.
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