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AssigneePhillips Petroleum Company
InventorsBruce E. Kreischer, Warren M. Ewert, Ronald D. Knudsen
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The specification discloses a method for cleaning an oligomerization reactor after making a higher olefin in the reactor. An olefin is reacted in the presence of a catalyst comprising an aluminum alkyl to form an olefin reaction product. For example, ethylene can be trimerized in the reaction to produce 1-hexene. The reaction also causes a co-product residue of the catalyst to form on the interior surface of the reactor. The interior surface of the reactor is then contacted with an alcohol under conditions effective to remove at least a substantial amount of the catalyst residue from the interior surface of the reactor. The catalyst-removing step can be carried out by combining an alcohol with the process medium used in the reactor. The combined medium can be used to remove both the accumulated polymer co-product and the accumulated catalyst residue from the reactor.
A method for cleaning a reactor in which a higher olefin has been made using a catalyst system comprising metal content, thereby forming a catalyst residue, wherein said method comprises:
A method for making a higher olefin, comprising:
A method for cleaning a reactor in which a higher olefin has been made using a catalyst system comprising metal content, thereby forming a catalyst residue, wherein said method comprises:
A method for making a higher olefin, comprising:
Dependencies are inferred from the claim text.