US 12,077,491 B2
Steam generation in oxidative dehydrogenation
Vasily Simanzhenkov, Calgary (CA); Robert Ladd, Airdrie (CA); Michael Koselek, Red Deer (CA); Kamal Serhal, Calgary (CA); Shahin Goodarznia, Calgary (CA); and Bolaji Olayiwola, Calgary (CA)
Assigned to NOVA Chemicals (International) S.A., Fribourg (CH)
Appl. No. 17/640,582
Filed by NOVA CHEMICALS (INTERNATIONAL) S.A., Fribourg (CH)
PCT Filed Sep. 16, 2020, PCT No. PCT/IB2020/058631
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/059087, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/904,823, filed on Sep. 24, 2019.
Prior Publication US 2022/0315509 A1, Oct. 6, 2022
Int. Cl. C07C 5/48 (2006.01); B01J 8/06 (2006.01)
CPC C07C 5/48 (2013.01) [B01J 8/067 (2013.01); B01J 2208/00212 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system, comprising:
a first reactor comprising a first oxidative dehydrogenation (ODH) catalyst configured to dehydrogenate a lower alkane to a corresponding alkene at a first temperature and to facilitate generation of steam, wherein the first reactor comprises a first-reactor jacket configured to transfer heat;
a second reactor comprising a second ODH catalyst configured to dehydrogenate unreacted lower alkane in a first-reactor effluent from the first reactor to the corresponding alkene at a second temperature greater than the first temperature and to facilitate generation of steam, wherein the second reactor comprises a second-reactor jacket configured to transfer heat; and
a third reactor comprising a third ODH catalyst configured to dehydrogenate unreacted lower alkane in a second-reactor effluent from the second reactor to the corresponding alkene at a third temperature greater than the second temperature and to facilitate generation of steam, wherein the third reactor comprises a third-reactor jacket configured to transfer heat,
wherein the first ODH catalyst is in a fixed-bed in the first reactor, the second ODH catalyst is in a fixed-bed in the second reactor, the third ODH catalyst is in a fixed-bed in the third reactor, and the third reactor is configured to discharge a third-reactor effluent comprising the corresponding alkene.