US 12,325,632 B2
Production of carbon dioxide and ammonia from residual gases in the steel and metal industries
Jaap Ferdinand Vente, The Hague (NL); Vasileios Sfakianakis, The Hague (NL); and Paul Dean Cobden, The Hague (NL)
Assigned to Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO, The Hague (NL)
Appl. No. 17/264,343
Filed by Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO, The Hague (NL)
PCT Filed Aug. 2, 2019, PCT No. PCT/EP2019/070940
§ 371(c)(1), (2) Date Jan. 29, 2021,
PCT Pub. No. WO2020/025815, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 18187053 (EP), filed on Aug. 2, 2018.
Prior Publication US 2021/0292163 A1, Sep. 23, 2021
Int. Cl. C01B 3/02 (2006.01); C01B 3/16 (2006.01); C01C 1/04 (2006.01)
CPC C01B 3/025 (2013.01) [C01B 3/16 (2013.01); C01C 1/0488 (2013.01); C01B 2203/0233 (2013.01); C01B 2203/042 (2013.01); C01B 2203/0445 (2013.01); C01P 2006/80 (2013.01)] 14 Claims
 
1. A process for the production of carbon dioxide and ammonia for the production of H2NC(O)X, wherein X=NH2 or O− NH4+, comprising:
(a) subjecting a mixture comprising (i) basic oxygen furnace gas and (ii) steam to a separation-enhanced water gas shift reaction to obtain a first product gas comprising H2 and N2 and a second product gas comprising CO2;
(b) subjecting the first product gas originating from step (a) to NH3 synthesis to obtain a product gas comprising NH3; and
(c) optionally subjecting at least part of the CO2 originating from step (a) and at least part of the NH3 originating from step (b) to the synthesis of H2NC(O)X,
wherein the H2 to N2 ratio in the first product gas originating from step (a) is in a range of 2.5 to 3.