The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2025
Filed:
Aug. 02, 2019
Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno, The Hague, NL;
Jaap Ferdinand Vente, The Hague, NL;
Vasileios Sfakianakis, The Hague, NL;
Paul Dean Cobden, The Hague, NL;
Abstract
The present invention relates to a process for the production of carbon dioxide and ammonia for the production of urea or ammonium carbamate from residual gases in the steel and metal industries, in particular basic oxygen furnace (BOF) gas and/or blast furnace (BF) gas. The process according to the invention comprises: (a) subjecting a mixture comprising (i) basic oxygen furnace gas and/or blast furnace gas and (ii) steam to a separation-enhanced water gas shift reaction to obtain a first product gas comprising Hand Nand a second product gas comprising CO; (b) subjecting the first product gas originating from step (a) to NHsynthesis to obtain a product gas comprising NH; and (c) optionally subjecting at least part of the COoriginating from step (a) and at least part of the NHoriginating from step (b) to the synthesis of urea or ammonium carbamate.