公开(公告)号：US20240052441A1

公开(公告)日：2024-02-15

申请号：US18257748

申请日：2021-12-17

申请人： PAUL WURTH S.A.

发明人： Cristiano CASTAGNOLA ,  Fabio CRAVINO ,  Silvia ILACQUA ,  Stefano MAGNANI ,  Jan KRULL

IPC分类号： C21B13/00 ,  C21B13/02 ,  C25B15/08 ,  C01B3/38

CPC分类号： C21B13/0073 ,  C21B13/02 ,  C25B15/081 ,  C01B3/38 ,  C21B2100/24 ,  C21B2100/26 ,  C21B2100/44 ,  C21B2100/66 ,  C21B2100/80 ,  C01B2203/06 ,  C01B2203/1241 ,  C01B2203/0205

摘要： The invention relates to the production of direct reduced iron, DRI, where a hydrogen direct reduction is synergistically operated in the context of an industrial plant. The hydrogen reduction operates with reducing gas comprising at least 85 vol. % hydrogen, and receives a make-up hydrogen stream. At least part of the make-up hydrogen stream is produced on site. by at least one of (i) electrolysis means configured to produce hydrogen from steam recovered from one or more components of the industrial plant and/or from steam generated using waste heat and/or hot gases emitted by the one or more components; and (ii) gas shift reactor means configured to convert CO-bearing gas emitted by at least one component of the industrial plant into hydrogen and to remove CO2.

公开(公告)号：US20240360526A1

公开(公告)日：2024-10-31

申请号：US18687038

申请日：2022-08-26

申请人： PAUL WURTH S.A.

发明人： Cristiano CASTAGNOLA ,  Fabio CRAVINO ,  Silvia ILACQUA ,  Stefano MAGNANI ,  Jan KRULL

IPC分类号： C21B13/00 ,  C21B5/06 ,  C21B13/02

CPC分类号： C21B13/0073 ,  C21B5/06 ,  C21B13/02 ,  C21B2100/22 ,  C21B2100/80 ,  C21B2300/02

摘要： A method for producing iron containing products includes: operating a blast furnace plant to produce liquid pig iron from blast furnace charge material, whereby metallurgical gas having blast furnace top gas is generated; operating a direct reduction plant to produce direct reduced iron products from iron ore loaded into the top of a direct reduction furnace, a stream of reducing gas being introduced into the direct reduction furnace, the direct reduction plant including a reformer or heater device from which the stream of reducing gas is discharged, whereby top gas is generated by the direct reduction furnace; where a first stream of direct reduction plant top gas is treated in an enriching stage configured for enriching in reducing species, and forwarded to the blast furnace plant to be used therein as reducing gas; and where a first stream of the metallurgical gas (B3/B6) is forwarded to the reformer or heater device of the direct reduction plant to be used therein as fuel gas. Also disclosed is a corresponding metallurgical plant.