公开(公告)号：US20240294446A1

公开(公告)日：2024-09-05

申请号：US18578480

申请日：2022-07-20

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Christian A. Diaz Urrutia ,  Xiaoying Bao ,  Keith H. Kuechler ,  Saurabh S. Maduskar ,  Arun K. Sharma ,  Russell T. Clay

IPC: C07C5/32

CPC classification number: C07C5/325 ,  C07C2523/42 ,  C07C2523/50 ,  C07C2523/52 ,  C07C2523/62 ,  C07C2523/89

Abstract: A hydrocarbon can be contacted with dehydrogenation catalyst particles to produce an effluent that can include coked catalyst particles and dehydrogenated hydrocarbon(s). A first stream rich in coked catalyst particles and a second stream rich in dehydrogenated hydrocarbon(s) and containing entrained catalyst particles can be separated from the effluent. The second stream can be contacted with a first quench medium to produce a cooled stream. The cooled stream can be contacted with a second quench medium within a quench tower. A gaseous stream that includes the dehydrogenated hydrocarbon(s), a first quench medium stream, and a slurry stream that includes the second quench medium and the entrained catalyst particles can be separated from the tower. The first quench medium can be recycled. The entrained catalyst particles can be separated from the slurry to provide recovered second quench medium and recovered entrained catalyst particles. The recovered second quench medium can be recycled.