US 12,215,282 B2
Low CO2 emission and hydrogen import cracking heaters for olefin production
Kandasamy M. Sundaram, Houston, TX (US); Thomas W. Gronauer, Houston, TX (US); Baozhong Zhao, Houston, TX (US); Stephen J. Stanley, Houston, TX (US); Marijn Kamphuijs, Houston, TX (US); Frank D. McCarthy, Houston, TX (US); and Jose De Barros, Houston, TX (US)
Assigned to Lummus Technology LLC, Houston, TX (US)
Filed by LUMMUS TECHNOLOGY LLC, Houston, TX (US)
Filed on Mar. 22, 2023, as Appl. No. 18/188,235.
Claims priority of provisional application 63/269,775, filed on Mar. 22, 2022.
Prior Publication US 2023/0303935 A1, Sep. 28, 2023
Int. Cl. C10G 47/22 (2006.01)
CPC C10G 47/22 (2013.01) [C10G 2300/4081 (2013.01); C10G 2400/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pyrolysis process for converting a hydrocarbon feed to produce olefins, the process comprising:
preheating the 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 the heated hydrocarbon stream, recovering a cracking feedstream comprising vaporous hydrocarbons;
cracking the cracking feedstream in one or more coils in a radiant section, recovering a cracked hydrocarbon product comprising olefins;
quenching the cracked hydrocarbon product in a primary transferline exchanger, recovering a partially cooled cracked hydrocarbon product; and
cooling the partially cooled cracked hydrocarbon product in the secondary transferline exchanger in indirect heat exchange with the preheated hydrocarbon stream, recovering a cooled hydrocarbon product stream comprising the olefins.