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公开(公告)号：US20240400384A1
公开(公告)日：2024-12-05
申请号：US18696505
申请日：2022-09-26
Applicant: PAUL WURTH S.A.
Inventor： Klaus Peter KINZEL , Gilles KASS , Johannes MÜNZER , Miriam VALERIUS , Fernand DIDELON
Abstract: A method for operating a blast furnace plant having a blast furnace and an ammonia reforming plant, the method including the steps of feeding a stream of ammonia to the ammonia reforming plant, cracking the stream of ammonia in the ammonia reforming plant to produce a reducing gas, feeding an iron oxide containing charge and the reducing gas into the blast furnace, and reducing iron oxide inside the blast furnace by reaction between the iron oxide containing charge and the reducing gas, where the reducing gas comprises less than 15% of ammonia.
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公开(公告)号：US20230384035A1
公开(公告)日：2023-11-30
申请号：US18030827
申请日：2021-10-13
Applicant: PAUL WURTH S.A. , PAUL WURTH DEUTSCHLAND GMBH
Inventor： Christian DE GRUITER , Manuel KAUFMANN , Patrick HUTMACHER , Peter Klaus KINZEL , Gilles KASS , Stefan THALER
Abstract: A heat storage device such as a hot blast stove including a heat regeneration checkerwork made of checker bricks, the checkerwork being supported by a support assembly (16). In accordance with an aspect of the present disclosure, the support assembly having a carrier structure made of refractory material and carrier floor also made of refractory material, the carrier floor resting on the carrier structure and being arranged and formed to carry the checker bricks of the checkerwork.
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公开(公告)号：US20230324122A1
公开(公告)日：2023-10-12
申请号：US18043949
申请日：2021-09-27
Applicant: PAUL WURTH S.A.
Inventor： Nicolas MAGGIOLI , Klaus Peter KINZEL , Gilles KASS
IPC: F27D7/02
CPC classification number: F27D7/02 , F27D2007/023
Abstract: A reducing gas injection system for a blast furnace having a blast furnace wall, the system including a reducing gas distribution pipe, one or more injectors mounted to the blast furnace wall at a shaft level, where the reducing gas distribution pipe is attached to the blast furnace wall or its supporting structure, where the injector(s) have a nozzle body with a peripheral wall extending along a longitudinal axis from a front portion, with at least one injection hole, to an opposite rear portion with an inlet port, where the nozzle body includes an inner gas channel for guiding reducing gas from the inlet port to the injection holes(s); where the nozzle body is mounted trough an aperture in the blast furnace wall in such a way that the front portion with the injection hole(s) is located on an inner side of the blast furnace, whereas the rear portion with the inlet port is outside of the blast furnace wall, where the nozzle body includes a peripheral mounting portion configured for connecting the injector in a gas tight manner to the aperture in the blast furnace wall, where the inlet port is in fluidic connection with the reducing gas distribution pipe by means of an injector stock, the injector stock including a feeding pipe connected to the reducing gas distribution pipe, an elbow connected to the feeding pipe and an injector pipe connected to the elbow, the injector pipe being flange mounted in a gas tight manner to the inlet port of the injector and the injector pipe and/or an outlet of the elbow having at least one cardan compensation joint.
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Patent Agency Ranking
公开(公告)号：US20230324121A1
公开(公告)日：2023-10-12
申请号：US18025048
申请日：2021-09-22
Applicant: PAUL WURTH S.A.
Inventor： Nicolas MAGGIOLI , Klaus Peter KINZEL , Gilles KASS
CPC classification number: F27D3/16 , F27D2003/166 , F27D1/12 , F27B1/24
Abstract: A gas injection system for a blast furnace or shaft furnace or metallurgical furnace comprising a furnace wall and a cooling plate wherein the gas injection system comprises a gas distribution pipe, one or more injectors having a nozzle, wherein the nozzle comprises a ceramic insert, wherein the cooling element has a hot side, turned away from the furnace wall, wherein a protrusion is attached to the hot side of said cooling plate, wherein the ceramic insert traverses the furnace wall and the cooling plate and the protrusion on cooling plate and wherein the ceramic inserts have an adaptable length so that they either protrude inside the furnace, or that they are flush with a hot face of the cooling plate or stay slightly in retreat with a hot face of the cooling plate.
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公开(公告)号：US20230008316A1
公开(公告)日：2023-01-12
申请号：US17781781
申请日：2020-11-26
Applicant: PAUL WURTH S.A.
Inventor： Klaus Peter KINZEL , Gilles KASS
Abstract: A method for converting a blast furnace plant for synthesis gas utilization includes:
constructing a syngas stove, and constructing a syngas supply system for connecting the syngas stove to a blast furnace;
connecting a first syngas stove to the top-gas supply system, the cold-blast and hot-blast supply systems and operating the first syngas stove for hot blast generation;
disconnecting a first original stove from the top-gas supply system, the cold-blast and hot-blast supply systems; and
converting the first original stove to adapt it for producing syngas. The method includes
connecting the first original stove to the top-gas supply system;
disconnecting the first syngas stove from the cold-blast and hot-blast supply systems, connecting the first original stove and first syngas stove to a gas-combination supply system; and
operating the first original stove and first syngas stove to produce and then supply syngas to the blast furnace via the syngas supply system.-
公开(公告)号：US20240263258A1
公开(公告)日：2024-08-08
申请号：US18565592
申请日：2022-06-02
Applicant: PAUL WURTH S.A.
Inventor： Klaus Peter KINZEL , Gilles KASS , Miriam VALERIUS
CPC classification number: C21B5/06 , C21B5/001 , C21B2005/005 , C21B2100/22 , C21B2100/26 , C21B2100/42
Abstract: 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%.
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公开(公告)号：US20230375272A1
公开(公告)日：2023-11-23
申请号：US18027488
申请日：2021-09-27
Applicant: PAUL WURTH S.A.
Inventor： Nicolas MAGGIOLI , Gilles KASS , Klaus Peter KINZEL
CPC classification number: F27D7/02 , F27D3/16 , F27B1/16 , F27B1/24 , F27D99/0073 , F27D2007/023 , F27D2003/166
Abstract: A shaft furnace, in particular a blast furnace, comprises includes an outer metal shell; a plurality of tuyeres arranged to inject hot blast into the shaft furnace; and means for injecting process gas in the shaft stack area, where the injector has a nozzle body with a peripheral wall extending along a longitudinal axis from a front portion, with at least one injection hole, to an opposite rear portion connected to a base member, where the nozzle body includes an inner gas channel for guiding process gas from an inlet port in the base member to the injection holes(s), nozzle body being mounted through an aperture in the metal shell in such a way that the front region with injection hole(s) is located on the inner side of the metal shell, whereas the rear portion is outside of the metal shell, and the base member includes a peripheral mounting portion configured for connecting the injector in a gas tight manner to a mounting unit surrounding the aperture in the metal shell.
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公开(公告)号：US20220145410A1
公开(公告)日：2022-05-12
申请号：US17605305
申请日：2020-05-19
Applicant: PAUL WURTH S.A.
Inventor： Klaus Peter KINZEL , Anand Kumar AGRAWAL , Gilles KASS
Abstract: A method for operating a blast furnace, including collecting a blast furnace gas from the blast furnace, the blast furnace gas being a CO2 containing gas, combining the blast furnace gas with a fuel gas to obtain a gas mixture, the fuel gas being a hydrocarbon containing gas, subjecting the gas mixture to a reforming process, thereby producing a synthesis gas containing CO and H2; and feeding at least a portion of the synthesis gas and an oxygen-rich gas into the blast furnace, where the blast furnace gas is combined with the fuel gas while containing substantially the same amount of CO2 as when exiting the blast furnace and wherein the blast furnace gas is combined with the fuel gas in an over-stoichiometric ratio, so that the synthesis gas contains a surplus portion of the blast furnace gas.
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