US 12,227,466 B2
Methods and systems for performing oxidative coupling of methane
Gary Podrebarac, Friendswood, TX (US); Zan Liu, Katy, TX (US); Khalid Azzam, Sugarland, TX (US); and Daniel Rosenberg, Dunaujvaros (HU)
Assigned to Lummus Technology LLC, Houston, TX (US)
Filed by Lummus Technology LLC, Houston, TX (US)
Filed on Aug. 30, 2022, as Appl. No. 17/898,715.
Claims priority of provisional application 63/238,816, filed on Aug. 31, 2021.
Prior Publication US 2023/0061675 A1, Mar. 2, 2023
Int. Cl. C07C 2/84 (2006.01)
CPC C07C 2/84 (2013.01) [C07C 2523/26 (2013.01); C07C 2523/42 (2013.01); C07C 2523/72 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method of performing an oxidative coupling of methane (OCM) reaction to produce C2+ compounds, the method comprising:
(a) introducing a gas mixture feed comprising methane (CH4), oxygen (O2), hydrogen (H2), and carbon monoxide (CO) and having a temperature of less than or equal to 300° C. to an inlet of an OCM reactor, wherein the OCM reactor comprises a combustion catalyst and an OCM catalyst;
(b) contacting the combustion catalyst with the gas mixture feed to combust at least a portion of the gas mixture feed and generate a heated gas mixture having a temperature of at least 450° C.; and
(c) contacting the OCM catalyst with the heated gas mixture to initiate an OCM reaction and produce an OCM effluent comprising (i) C2+ compounds including ethylene and ethane, and (ii) non-C2+ impurities comprising one or more of CO, CH4, H2, and carbon dioxide (CO2).