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:
Apr. 10, 2018
Filed:
Feb. 27, 2014
Hyl Technologies S.a. DE C.v., San Nicolas de Los Garza, NL;
Danieli & C. Officine Meccaniche, S.p.a., Buttrio, IT;
Jorge Octavio Becerra-Novoa, Nuevo Leon, MX;
Alessandro Martinis, Udine, IT;
HYL TECHNOLOGIES, S.A. DE C.V., San Nicolas de Los Garza, Nuevo Leon, MX;
DANIELI & C. OFFICINE MECCANICHE, S.P.A., Buttrio (UD), IT;
Abstract
A direct reduction process producing DRI from iron oxide particles by reduction at a about 750° C. with a reducing gas mainly Hand CO, that also includes CO, Hand methane, a the reduction reactor and the top gas effluent from the reduction reaction after cooling/scrubbing is split. The resulting first top gas portion with a first hydrocarbon-containing make-up gas passes through a catalytic reformer yielding an improved hot reducing gas first effluent. The second top gas portion passes through a COremoval unit and then with the second hydrocarbon-containing make-up gas passes through a heater yielding a hot CO-lean recycle reducing gas second effluent. The first and second effluents are fed to the reducing zone of the reduction reactor as the reducing gas reactant. The flow rate of at least the second of the two make-up gases is regulated to control the carbon content of the DRI produced.