利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8503 条记录 (耗时 0.041 秒)

    Method and device for producing direct reduced metal
    1.
    发明授权
    Method and device for producing direct reduced metal 有权

    公开(公告)号：US12104222B2

    公开(公告)日：2024-10-01

    申请号：US17599506

    申请日：2020-03-31

    申请人： GREENIRON H2 AB

    发明人： Hans Murray

    IPC分类号： C22B5/12 ,  C21B13/00 ,  C21B13/12

    CPC分类号： C22B5/12 ,  C21B13/004 ,  C21B13/0073 ,  C21B13/12

    摘要： A method for producing direct reduced metal material includes charging metal material to be reduced into a furnace space; evacuating an existing atmosphere from the furnace space so as to achieve an underpressure inside the furnace space; providing, in a main heating step, heat and hydrogen gas to the furnace space, so that heated hydrogen gas heats the charged metal material to a temperature high enough so that metal oxides present in the metal material are reduced, in turn causing water vapor to be formed; condensing and collecting the water vapor in a condenser below the charged metal material. The hydrogen gas is provided without recirculation of the hydrogen gas. The also includes a subsequently performed step of removing the reduced metal material from the furnace space, and storing and/or transporting the reduced metal material under an inert atmosphere.

    System and method for pyrolysis driven reduced iron production using integrated thermal management
    2.
    发明公开
    System and method for pyrolysis driven reduced iron production using integrated thermal management 审中-公开

    公开(公告)号：US20240309477A1

    公开(公告)日：2024-09-19

    申请号：US18600495

    申请日：2024-03-08

    申请人： Molten Industries Inc.

    发明人： Kevin A. Bush ,  Caleb C. Boyd

    IPC分类号： C21B13/00 ,  C21B13/02

    CPC分类号： C21B13/0073 ,  C21B13/02 ,  C21B2100/40

    摘要： A system and method for obtaining a metal oxide reduction product in a metal oxide reduction reaction using a pyrolysis-derived hydrogen from a pyrolysis reactor that pyrolyzes a hydrocarbon feedstock to deliver pyrolysis gases that include the pyrolysis-derived hydrogen, a pyrolysis carbon product and a hydrocarbon fraction of unreacted hydrocarbon feedstock. Pyrolysis gases are fed through a high-temperature carbon separator to separate the pyrolysis carbon product and then flow at a working temperature below pyrolyzation temperature to a reduction furnace that runs the metal oxide reduction reaction such that the pyrolysis-derived hydrogen participates in that reaction. A thermal management system maintains the working temperature of the pyrolysis gases and manages the processing of unreacted pyrolysis-derived hydrogen through heat exchange and other thermal management techniques and tools.

    HYDROGEN GAS RECYCLING IN A DIRECT REDUCTION PROCESS
    6.
    发明公开
    HYDROGEN GAS RECYCLING IN A DIRECT REDUCTION PROCESS 审中-公开

    公开(公告)号：US20240279759A1

    公开(公告)日：2024-08-22

    申请号：US18571210

    申请日：2022-06-20

    申请人： HYBRIT Development AB

    发明人： Raimon Perea Marin ,  Farzad Mohseni-Mörner ,  Javad Fayazi

    IPC分类号： C21B13/00

    CPC分类号： C21B13/0073 ,  C21B2100/284 ,  C21B2100/40

    摘要： A system for the production of sponge iron, the system including a direct reduction shaft including a first inlet for introduction of iron ore into the shaft, a first outlet for removing sponge iron from the shaft, a reduction gas source, connected through a gas line with the shaft, a first compressor in said gas line, and a primary circuit for conducting at least a part of the top gas therethrough. The primary circuit is connected in one end with shaft and in another end with said gas line downstream said first compressor. The system also includes a secondary circuit for conducting at least a portion of gas removed from gas conducted through the primary circuit, said secondary circuit being connected in one end to the primary circuit and in another end to said gas line upstream said first compressor. The system further includes means therein for reducing the pressure of said portion of gas conducted through the secondary circuit, and a first valve for controlling a flow of said portion of gas into the secondary circuit.

    METHOD FOR OPERATING A BLAST FURNACE INSTALLATION
    8.
    发明公开
    METHOD FOR OPERATING A BLAST FURNACE INSTALLATION 审中-公开

    公开(公告)号：US20240263258A1

    公开(公告)日：2024-08-08

    申请号：US18565592

    申请日：2022-06-02

    申请人： PAUL WURTH S.A.

    发明人： Klaus Peter KINZEL ,  Gilles KASS ,  Miriam VALERIUS

    IPC分类号： C21B5/06 ,  C21B5/00

    CPC分类号： C21B5/06 ,  C21B5/001 ,  C21B2005/005 ,  C21B2100/22 ,  C21B2100/26 ,  C21B2100/42

    摘要： A method for operating a blast furnace is presented, said method comprising the steps of collecting a stream of blast furnace gas from the blast furnace; feeding said stream of blast furnace gas and a hydrocarbon containing gas to a reforming plant comprising at least one reformer; reforming said stream of blast furnace gas and said hydrocarbon containing gas in the reforming plant en to produce a stream of syngas; and feeding at least a portion of said stream of syngas to the blast furnace; wherein a stream of h % is added to the hydrocarbon containing gas before step (c) and/or to the stream of blast furnace gas before step (c) and/or to the stream of syngas before step (d) and/or to the tuyere of the blast furnace, wherein the feeding of at least a portion of said stream of syngas to the blast furnace occurs through the shaft of the blast furnace and/or through the tuyere of the blast furnace, and wherein the utilization efficiency of the hydrogen in a blast furnace plant comprising the blast furnace, the reforming plant and a cowper plant is above 60%.