	US 12,215,432 B2
	Method for generating synthesis gas for use in hydroformylation reactions
Niels Christian Schjødt, Hvalsø (DK); Rainer Küngas, Copenhagen (DK); Berit Hinnemann, Stenløse (DK); and Bengt Peter Gustav Blennow, Humlebæk (DK)
Assigned to HALDOR TOPSØE A/S, Kgs. Lyngby (DK)
Appl. No. 17/046,049
Filed by HALDOR TOPSØE A/S, Kgs. Lyngby (DK)
PCT Filed Apr. 11, 2019, PCT No. PCT/EP2019/059201 § 371(c)(1), (2) Date Oct. 8, 2020, PCT Pub. No. WO2019/197514, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. PA 2018 00156 (DK), filed on Apr. 13, 2018.
Prior Publication US 2021/0130965 A1, May 6, 2021
Int. Cl. C25B 1/23 (2021.01); C01B 3/06 (2006.01); C01B 32/40 (2017.01); C10K 1/04 (2006.01); C10K 3/02 (2006.01); C25B 1/042 (2021.01); C25B 9/19 (2021.01); C25B 9/70 (2021.01); C25B 13/05 (2021.01); C25B 13/07 (2021.01); C25B 15/021 (2021.01); C25B 15/08 (2006.01)

CPC C25B 1/23 (2021.01) [C01B 3/06 (2013.01); C01B 32/40 (2017.08); C10K 1/04 (2013.01); C10K 3/026 (2013.01); C25B 1/042 (2021.01); C25B 9/19 (2021.01); C25B 9/70 (2021.01); C25B 13/05 (2021.01); C25B 13/07 (2021.01); C25B 15/021 (2021.01); C25B 15/08 (2013.01); C25B 15/081 (2021.01); C25B 15/083 (2021.01); C01B 2203/02 (2013.01); C01B 2203/0495 (2013.01); C01B 2203/06 (2013.01); C01B 2203/12 (2013.01)]

5 Claims

1. A method for the generation of a gas mixture comprising carbon monoxide, carbon dioxide and hydrogen for use in hydroformylation plants, comprising the steps of:

evaporating water to steam,

feeding the steam to a solid oxide electrolysis cell (SOEC) or an SOEC stack at a sufficient temperature for the cell or cell stack to operate while supplying an electrical current to the SOEC or SOEC stack to effect a partial conversion of steam to hydrogen forming a raw product gas,

feeding CO₂from an external source,

utilizing the raw product gas comprising H₂together with the CO₂as feed for a reverse water gas shift (RWGS) reactor in which the RWGS reaction takes place, converting some of the CO₂and H₂to CO and H₂O forming a RWGS product gas, wherein the raw product gas is transferred directly to the RWGS reactor without cooling the raw product gas,

removing some of or all the remaining steam from the RWGS product gas stream by cooling the RWGS product gas stream allowing for condensation of at least part of the steam as liquid water and separating a remaining product gas from the liquid water, the remaining product gas comprising CO, CO₂and H₂, and

using the remaining product gas for a liquid phase hydroformylation process utilizing carbon monoxide and hydrogen as reactants.