公开(公告)号：US20240067884A1

公开(公告)日：2024-02-29

申请号：US18270159

申请日：2022-01-05

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Mark A. Rooney ,  David K. Marsh ,  Richard Young ,  David Spicer ,  William A. Aslaner ,  Jie Yang

IPC: C10G9/20 ,  B01J19/00 ,  B01J19/18 ,  C10G9/36

CPC classification number: C10G9/206 ,  B01J19/0013 ,  B01J19/1831 ,  C10G9/36 ,  B01J2219/00058 ,  B01J2219/00159 ,  C10G2300/708 ,  C10G2300/807

Abstract: The present disclosure relates to processes, methods, systems, and apparatus for steam cracking hydrocarbon in a pyrolysis furnace having a convection zone and a radiant zone. The convection zone includes three heat exchangers in series with a serpentine arrangement. A fluid source is disposed each heat exchanger to provide steam into the heat exchangers. The present disclosure further relates to a process of adjusting the stream flow rate for each fluid source to control operating conditions such as flue gas temperature, stack temperatures, and temperatures of other components of the furnace.

公开(公告)号：US20250002792A1

公开(公告)日：2025-01-02

申请号：US18706646

申请日：2022-11-22

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Mark A. Rooney ,  Jie Yang ,  Richard Young ,  David Spicer ,  William A. Aslaner

IPC: C10G9/36 ,  B01J19/00 ,  C10G9/20

Abstract: A steam cracking process is provided, including introducing a. first hydrocarbon-containing feed to a convection section of a steam cracking furnace. The convection section can include (i) a first arrangement having a first heat exchanger and a first economizer disposed downstream or upstream, of the first heat exchanger: (ii) a second arrangement having a. second heat exchanger in fluid communication with the first heat exchanger and. a second economizer in fluid communication with the first economizer, the second arrangement disposed downstream of the first arrangement such that each of the first and second economizer alternates with each of the first and second heat exchangers. The process can include (a) heating the first hydro-carbon-containing feed in the first heat exchanger at a hydrocarbon outlet temperature and (b) introducing water to the first economizer and removing the water from the convection section at an outlet temperature.