Olefin oligomerization in the presence of cyclopentene
AssigneeExxonMobil Chemical Patents Inc.
InventorsEmiel De Smit, Mechilium J. G. Janssen, Marc P. H. Puttemans
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Abstract
Process for converting an olefin containing hydrocarbon feed into an oligomerization product or a hydrogenated oligomerization product, comprising contacting the feed in a reactor with an oligomerization catalyst under conditions suitable to oligomerize the olefin to obtain an oligomerization product and optionally hydrogenating the oligomerization product wherein the content of the at least one C4-, C5-, C6- or C7-cyclic olefin in the feed is controlled.
Claims21
A process for converting an olefin-containing hydrocarbon feed into an oligomerization product, the process comprising the steps of:
- (a) contacting the olefin-containing hydrocarbon feed in a reactor with an oligomerization catalyst having a deactivation rate of below 20° C. per 1,000 ton (t) of oligomerization product under conditions suitable to oligomerize the olefin to obtain a reactor effluent, the olefin-containing hydrocarbon feed comprising at least one C2 to C12 acyclic olefin and cyclopentene, the reactor effluent comprising an oligomerization product which comprises C6 to C16 cycloalkenes,
- wherein the deactivation rate of the oligomerization catalyst is defined as the temperature increase needed to maintain 90% conversion of the selected at least one acyclic olefin(s) in the feed per 1,000 ton (t) oligomerization product produced pert of oligomerization catalyst;
- and
- (b) adjusting the content of cyclopentene in the olefin-containing hydrocarbon feed to a level at or below 1.5 wt % based on the total weight of olefins in the hydrocarbon feed to maintain the deactivation rate.
In a process for converting an olefin-containing hydrocarbon feed into an oligomerization product, wherein an olefin-containing hydrocarbon feed is contacted with an oligomerization catalyst in a reactor under conditions suitable to oligomerize the olefin to obtain a reactor effluent, the olefin-containing hydrocarbon feed comprising at least one C2 to C12 acyclic olefin and cyclopentene, the reactor effluent comprising an oligomerization product which comprises C6 to C16 cycloalkenes, the improvement comprising steps of:
- (a) selecting a desired content of C6 to C16 cycloalkenes in the oligomerization product;
- (b) adjusting a level of cyclopentene in the olefin-containing hydrocarbon feed to obtain the desired content of C6 to C16 cycloalkenes in the oligomerization product according to the following formula:
- A′ (wt %)=0.25+1.93(B′ (wt %))
- wherein A′ is the level of cyclopentene in the olefin-containing hydrocarbon feed and B′ is the desired content of C6 to C16 cycloalkenes in the oligomerization product.
Dependencies are inferred from the claim text.