BLAST FURNACE WITH SHAFT FEEDING OF HOT PROCESS GAS

    公开(公告)号:US20230375272A1

    公开(公告)日:2023-11-23

    申请号:US18027488

    申请日:2021-09-27

    申请人: PAUL WURTH S.A.

    摘要: 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.

    Compound furnace
    74.
    发明授权

    公开(公告)号:US11766718B2

    公开(公告)日:2023-09-26

    申请号:US17018334

    申请日:2020-09-11

    发明人: Nathan Woodard

    摘要: A compound sintering furnace with managed contamination for debinding and sintering parts. An inner insulation layer is disposed within an outer insulation layer and has an internal hot face surrounding a work zone. A sealed housing surrounds the inner insulation layer and is composed of a refractory material capable of withstanding a service temperature greater than a debinding temperature and less than a sintering temperature. An outer heater system is configured to heat at least a portion of the sealed housing and externally heat the inner insulation layer to, in conjunction with an inner heater system, heat the work zone to the debinding temperature, and inhibit condensation of a binder within and upon the inner insulation layer during a debinding process. The inner heater system is configured to internally heat the inner insulation and heat the work zone to the sintering temperature.

    HIGH PRESSURE HEAT TREATMENT APPARATUS
    76.
    发明公开

    公开(公告)号:US20230204290A1

    公开(公告)日:2023-06-29

    申请号:US18145331

    申请日:2022-12-22

    申请人: HPSP Co., Ltd.

    发明人: Kun Young LIM

    IPC分类号: F27D7/02 F27D99/00 F27D7/06

    摘要: Provided is a high pressure heat treatment apparatus including: an internal chamber accommodating an object to be heat-treated; an external chamber including a housing and a partition plate partitioning the housing into a high-temperature zone accommodating the internal chamber and a low-temperature zone having a lower temperature than the high-temperature zone, the partition plate including a discharge hole for allowing the high-temperature zone and the low-temperature zone to communicate with each other; a gas supply module configured to supply a process gas for the heat treatment to the internal chamber at a first pressure higher than that of the atmosphere, and supply a protective gas to the high-temperature zone and the low-temperature zone at a second pressure set in relation to the first pressure; and a discharge module configured to open the discharge hole to discharge the protective gas in the high-temperature zone to the low-temperature zone.

    GAS MANAGEMENT ASSEMBLY FOR HIGH PRESSURE HEAT-TREATMENT APPARATUS

    公开(公告)号:US20230194174A1

    公开(公告)日:2023-06-22

    申请号:US18068776

    申请日:2022-12-20

    申请人: HPSP Co., Ltd.

    发明人: Kun Young LIM

    IPC分类号: F27D7/02 F27D7/06

    摘要: Provided is a gas management assembly for a high pressure heat-treatment apparatus, the assembly including: a housing having an inner space; a gas supply module disposed in the inner space and configured to supply a gas to internal and external chambers of the high pressure heat-treatment apparatus; a gas exhaust module disposed in the inner space and configured to exhaust the gas caused by heat treatment of an object from the internal chamber; a detection module connected to the gas exhaust module in the inner space and configured to detect the residual gas remaining in the internal chamber; and a control module configured to control at least one of the gas supply module and the gas exhaust module based on a detection result of the residual gas by the detection module.

    CALCINATION APPARATUS AND PROCESS USING HYDROGEN

    公开(公告)号:US20230064514A1

    公开(公告)日:2023-03-02

    申请号:US17792576

    申请日:2021-01-13

    发明人: Tomas Mach

    IPC分类号: C01F7/444 B01J6/00 F27D7/02

    摘要: A process of calcining aluminium hydroxide (Al2O3.3H2O) to form alumina (Al2O3), for example in an alumina plant, such as a Bayer process plant, is disclosed. The process comprises combusting hydrogen and oxygen and generating steam and heat 5 and using the heat to calcine aluminium hydroxide and form alumina and more steam. An apparatus is also disclosed.

    Laminar flow shrink oven
    79.
    发明授权

    公开(公告)号:US11549753B2

    公开(公告)日:2023-01-10

    申请号:US15876826

    申请日:2018-01-22

    摘要: Heat shrink wrap product packaging oven or tunnel apparatus and processing methods are provided which incorporate or utilize airfoils in conjunction with hot air-providing side walls to desirably control impact of hot air onto a product wrapped with a tube of heat shrink wrap film and being conveyed on a conveyor thereby. In such heat shrink wrap product packaging apparatus and methods, such airfoils can be movable, e.g., rotatably moveable, relative to the side walls to vertically alter an air impact point onto the product.