Metathesis unit pretreatment process with formation of octene
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United States of America Patent
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Oct 13, 2009
Grant Date -
Mar 5, 2009
app pub date -
Nov 3, 2008
filing date -
Nov 18, 2005
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Abstract
Disclosed is a process for integrating a butene dimerization process with a metathesis process to remove isobutene from the feed stream to the metathesis reactor. The isobutene is preferentially dimerized in the dimerization process to leave n-butenes for metathesis with ethylene. An upstream selective hydrogenation process also isomerizes 1-butenes to 2-butenes which is the preferred butene reagent in the metathesis process. A common fractionator column for the dimerization and hydrogenation processes is also described.
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