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US 2022/0401934 A1Published application
Method of improving isomerization catalyst lifetime
AssigneeLyondell Chemical Technology, L.P.
InventorsRick B. Watson, David W. Leyshon, Kevin P. Fogarty
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Abstract
A skeletal isomerization process for isomerizing olefins is described. The process utilizes added hydrogen as a diluent to extend the isomerization catalyst's lifetime and increase the yield of skeletal isomer products compared to process that utilize inert gas diluents. The methods of this disclosure can be applied to feeds containing iso-olefins (for the production of linear olefins) or linear olefins (for the production of iso-olefins).
Claims20
A skeletal isomerization process comprising the steps of:
- a) co-feeding a hydrocarbon feed comprising at least one olefin and a hydrogen feed to a reactor containing an isomerization zeolite catalyst;
- and
- b) isomerizing the at least one olefin to at least one skeletal isomer product in the reactor for at least one catalyst cycle.
A skeletal isomerization process comprising the steps of:
- a) co-feeding a hydrocarbon feed comprising at least one olefin and a hydrogen feed to a reactor containing an isomerization zeolite catalyst, wherein the hydrocarbon feed is fed at a weight hourly space velocity (WHSV) between 1 to 30 h−1 and a molar ratio of the hydrocarbon feed to the hydrogen feed is between about 1:0.01 to about 1:1;
- and
- isomerizing the at least one olefin to at least one skeletal isomer product in the reactor for at least one catalyst cycle, wherein the catalyst cycle is at least sixteen days, a
- temperature of the reactor is from about 340° C. to about 500° C., and the isomerization zeolite catalyst is the hydrogen form of ferrierite (H-FER).
1 more element
Dependencies are inferred from the claim text.