公开(公告)号：US20230303935A1

公开(公告)日：2023-09-28

申请号：US18188235

申请日：2023-03-22

申请人： LUMMUS TECHNOLOGY LLC

发明人： Kandasamy M. Sundaram ,  Thomas W. Gronauer ,  Baozhong Zhao ,  Stephen J. Stanley ,  Marijn Kamphuijs ,  Frank D. McCarthy ,  Jose De Barros

IPC分类号： C10G47/22

CPC分类号： C10G47/22 ,  C10G2400/20 ,  C10G2300/4081

摘要： A process including preheating a hydrocarbon feed in a first preheat zone of a convection section, recovering a preheated hydrocarbon stream; heating the preheated hydrocarbon stream in a secondary transferline exchanger, recovering a heated hydrocarbon stream; feeding the heated hydrocarbon stream to a second preheat zone of the convection section to vaporize a portion of heated hydrocarbon stream, recovering a cracking feedstream; cracking hydrocarbons in the cracking feedstream in one or more coils in a radiant section, recovering a cracked hydrocarbon product; and cooling the cracked hydrocarbon product in the secondary transferline exchanger in indirect heat exchange with the preheated hydrocarbon stream, recovering a cooled hydrocarbon product stream.