US 12,404,225 B2
Method and system for the synthesis of methanol
Alexander Schulz, Frankfurt (DE); Nicolas Von Winning, Bad Homburg vor der Höhe (DE); and Sina Kunz, Frankfurt (DE)
Assigned to thyssenkrupp Uhde GmbH, Dortmund (DE); and thyssenkrupp AG, Essen (DE)
Appl. No. 17/611,320
Filed by thyssenkrupp Industrial Solutions AG, Essen (DE); and thyssenkrupp AG, Essen (DE)
PCT Filed May 6, 2020, PCT No. PCT/EP2020/062572
§ 371(c)(1), (2) Date Nov. 15, 2021,
PCT Pub. No. WO2020/229261, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 10 2019 113 003.4 (DE), filed on May 16, 2019.
Prior Publication US 2022/0162143 A1, May 26, 2022
Int. Cl. C07C 29/152 (2006.01); B01D 53/047 (2006.01); B01D 53/22 (2006.01); B01J 19/24 (2006.01)
CPC C07C 29/152 (2013.01) [B01D 53/047 (2013.01); B01D 53/229 (2013.01); B01J 19/245 (2013.01); B01J 19/2465 (2013.01); B01D 2256/16 (2013.01); B01D 2257/504 (2013.01)] 18 Claims
 
1. A process for synthesizing methanol comprising:
supplying a CO2 stream that includes a molar proportion of at least 50% carbon dioxide and an H stream that includes a molar proportion of at least 50% hydrogen to a methanol reactor arrangement for conversion to methanol;
obtaining a tail gas stream that comprises unreacted hydrogen from the methanol reactor arrangement;
supplying the tail gas stream from the methanol reactor arrangement, together with a hydrogen-containing fresh gas stream from a hydrogen-obtaining arrangement, to a hydrogen recovery arrangement to obtain a return stream that comprises unreacted hydrogen, wherein the return stream includes a molar proportion of at least 50% hydrogen; and
returning the return stream or at least the unreacted hydrogen to the methanol reactor arrangement as the H stream.