公开(公告)号：US20180312761A1

公开(公告)日：2018-11-01

申请号：US15963364

申请日：2018-04-26

Applicant: Suncor Energy Inc.

Inventor： Mingxing GU ,  Michael GOULDING ,  Jin Jiang ZHANG ,  Hieu TRAN

IPC: C10G11/18 ,  C10G9/00

Abstract: A process for operating a thermal or catalytic cracking unit is described, The process entails generating a product that includes cracked hydrocarbon vapor and solid coke-particles from a heavy hydrocarbon input. The product is communicated towards a fractionator and a quench liquid is introduced into the product for creating a two-phase flow of cracked hydrocarbon vapor and the quench liquid with solid coke-particles entrained in the quench liquid. The two-phase flow is introduced into the fractionator and the cracked hydrocarbon vapor are separated from the quench liquid and the solid coke-particles entrained therein by gravity separation. The two-phase flow can reduce or remove the requirement of a wash zone within the fractionator. A recirculation loop is included in a wash-zone circulation system. The recirculation loop bypasses one or more spray headers of the wash zone and returns to a first end of the wash-zone circulation system.