US 12,264,069 B2
Process for the conversion of carbon dioxide
John M. Repasky, New Braunfels, TX (US); and Robert L. Zeller, III, Seabrook, TX (US)
Assigned to Oxy Low Carbon Venture, LLC, Houston, TX (US)
Appl. No. 17/763,703
Filed by Oxy Low Carbon Ventures, LLC, Houston, TX (US)
PCT Filed Sep. 28, 2020, PCT No. PCT/US2020/053118
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/062384, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/906,969, filed on Sep. 27, 2019.
Prior Publication US 2022/0348461 A1, Nov. 3, 2022
Int. Cl. C01B 3/58 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); C01B 32/40 (2017.01); C07C 1/04 (2006.01); C07C 29/151 (2006.01)
CPC C01B 3/58 (2013.01) [B01J 19/0013 (2013.01); B01J 19/242 (2013.01); C01B 32/40 (2017.08); C07C 1/0485 (2013.01); C07C 29/1518 (2013.01); B01J 2219/00157 (2013.01); C01B 2203/0435 (2013.01); C01B 2203/0475 (2013.01); C01B 2203/061 (2013.01); C01B 2203/062 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A process for the production of syngas, the process comprising:
(i) reacting at least a portion of carbon dioxide with hydrogen within an initial reactor to produce an initial product stream including carbon monoxide, water, unreacted carbon dioxide, and unreacted hydrogen; and
(ii) reacting at least a portion of the unreacted carbon dioxide and unreacted hydrogen within a reactor downstream of the initial reactor to thereby produce a product stream including carbon monoxide, water, unreacted carbon dioxide, and unreacted hydrogen, where the initial product stream has a temperature T1 when exiting the initial reactor, where the product stream has a temperature T2 when exiting the downstream reactor, and where T2>T1, and where T1 is from about 300 to about 1000° C., and where T2 is from about 500 to about 1200° C.,
wherein the initial reactor is an adiabatic reactor and the reactor downstream of the initial reactor is a fired-tubular reactor.