公开(公告)号：US11299443B2

公开(公告)日：2022-04-12

申请号：US16910027

申请日：2020-06-23

Applicant: ExxonMobil Research and Engineering Company

Inventor： Arsam Behkish ,  Lei Zhang ,  Brandon J. O'Neill ,  Mark A. Deimund ,  Alice Lin

IPC: C07C2/12 ,  B01J29/70 ,  B01J29/90 ,  B01J8/08 ,  B01J8/00 ,  B01J38/02

Abstract: Systems and methods are provided for oligomerization of olefins to distillate boiling range products while also recycling naphtha boiling range olefins as part of the feed. By performing the olefin oligomerization while also recycling naphtha boiling range olefins, it has been discovered that the resulting distillate boiling range products can have an unexpected improvement in diesel combustion quality, such as an unexpected improvement in cetane rating. In order to manage coke formation and maintain consistent activity profile for the oligomerization catalyst, the reaction can be performed in a moving bed reactor. Additional temperature control can be maintained by the recycling of the naphtha boiling range portions of the oligomerization product back to the reactor.

公开(公告)号：US20210309587A1

公开(公告)日：2021-10-07

申请号：US16910027

申请日：2020-06-23

Applicant: ExxonMobil Research and Engineering Company

Inventor： Arsam Behkish ,  Lei Zhang ,  Brandon J. O'Neill ,  Mark A. Deimund ,  Alice Lin

IPC: C07C2/12 ,  B01J29/70 ,  B01J29/90 ,  B01J38/02 ,  B01J8/08 ,  B01J8/00

Abstract: Systems and methods are provided for oligomerization of olefins to distillate boiling range products while also recycling naphtha boiling range olefins as part of the feed. By performing the olefin oligomerization while also recycling naphtha boiling range olefins, it has been discovered that the resulting distillate boiling range products can have an unexpected improvement in diesel combustion quality, such as an unexpected improvement in cetane rating. In order to manage coke formation and maintain consistent activity profile for the oligomerization catalyst, the reaction can be performed in a moving bed reactor. Additional temperature control can be maintained by the recycling of the naphtha boiling range portions of the oligomerization product back to the reactor.