US2002182124A1PendingUtilityA1

Olefin production process

32
Priority: Oct 14, 1997Filed: Oct 14, 1997Published: Dec 5, 2002
Est. expiryOct 14, 2017(expired)· nominal 20-yr term from priority
Inventors:William M. WoodardWarren M. EwertHarvey HensleyMark E. LashierBruce E. KreischerGlyndal D. CowanJeffrey W. FreemanRalph FranklinRonald D. KnudsenRichard L. AndersonLyle R. Kallenbach
C07C 2527/126Y02P20/584B01J 31/122B01J 2231/20C07C 2527/135B01J 2531/62C07C 2531/14B01J 31/143C07C 2527/08C07C 2527/10B01J 31/181B01J 31/04C07C 2531/02C07C 2/30C07C 2531/22B01J 31/0231
32
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Claims

Abstract

A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound.

Claims

exact text as granted — not AI-modified
That which is claimed is:  
     
         1 . An olefin trimerization system comprising, in combination: 
 a) a reactor,    b) at least one inlet line into said reactor for olefin reactant and catalyst system,    c) effluent lines from said reactor for trimerization reaction products, and    d) at least one separator to separate desired trimerization reaction products;    wherein said catalyst system comprises a chromium source, a pyrrole-containing compound and a metal alkyl.    
     
     
         2 . A trimerization system in accordance with  claim 1  further comprising one or more filters.  
     
     
         3 . A trimerization system in accordance with  claim 1  further comprising a catalyst system deactivator inlet line following the reactor.  
     
     
         4 . A trimerization system in accordance with  claim 1  further comprising a reactor inlet line for olefin feed from a second source.  
     
     
         5 . A trimerization system in accordance with  claim 1  further comprising a separator inlet line for a stream of heavies to be separated.  
     
     
         6 . A trimerization system in accordance with  claim 1  further comprising a reactor inlet line for trimerization reaction solvent.  
     
     
         7 . A trimerization system in accordance with  claim 1  wherein said olefin feed comprises olefins compounds having from about 2 to about 30 carbon atoms per molecule.  
     
     
         8 . A trimerization system in accordance with  claim 7  wherein said olefin feed compound is ethylene.  
     
     
         9 . A trimerization system in accordance with  claim 1  wherein said desired trimerization reaction products comprise olefin compounds having from about 6 to about 100 carbon atoms per molecule.  
     
     
         10 . A trimerization system in accordance with  claim 9  wherein said desired trimerization reaction products comprise hexenes.  
     
     
         11 . A trimerization system in accordance with  claim 10  wherein said desired trimerization reaction products comprises 1-hexene.

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