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1.发明公开公开(公告)号：US20240167172A1
公开(公告)日：2024-05-23
申请号：US18138116
申请日：2023-04-23
申请人： Dioxycle
发明人： Sarah Lamaison , Jonathan Maistrello , Ruperto G Mariano , Bastien Faure , David Wakerley , Lindsay Leveen
IPC分类号： C25B3/25 , C01B32/942 , C07C1/32 , C21B13/12
CPC分类号： C25B3/25 , C01B32/942 , C07C1/325 , C21B13/12 , C01B2210/0006 , C21B2100/40 , C21B2100/80
摘要： Methods and systems for the valorization of carbon monoxide emissions from electric arc furnaces into highly valuable low-carbon footprint chemicals using carbon monoxide electrolysis are disclosed herein are disclosed. A disclosed method includes operating an electric arc furnace, generating, via operation of the electric arc furnace, a volume of carbon monoxide, supplying the volume of carbon monoxide to a cathode area of a carbon monoxide electrolyzer to be used as a reduction substrate, and generating, using the carbon monoxide electrolyzer, the reduction substrate, and an oxidation substrate, a volume of generated chemicals. The volume of generated chemicals is at least one of: a volume of hydrocarbons, a volume of organic acids, a volume of alcohol, a volume of olefins and a volume of N-rich organic compounds.
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公开(公告)号：US20180010202A1
公开(公告)日：2018-01-11
申请号：US15700212
申请日：2017-09-11
申请人： POSCO
发明人： Myoung-Kyun Shin , Dong-Won Kim , Sang-Hyun Kim , Jun-Hyuk Lee
CPC分类号： C21B13/0033 , C21B13/143 , C21B2100/40 , C21B2100/66 , C21B2100/80 , F27D17/004
摘要： Provided is a method for manufacturing reduced iron which includes the steps of: i) drying ores in an ore drier; ii) supplying the dried ores to at least one reduction reactor; iii) reducing the ores in the at least one reduction reactor and manufacturing reduced iron; iv) discharging exhaust gas by which the ores are reduced in the reduction reactor; v) branching the exhaust gas and providing the branched exhaust gas as ore feeding gas; and vi) exchanging heat between the exhaust gas and the ore feeding gas and transferring the sensible heat of the exhaust gas to the ore feeding gas. In the supplying the dried ores to the at least one reduction reactor, the dried ores are supplied to the at least one reduction reactor by using the ore feeding gas.
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3.发明公开公开(公告)号：US20240309477A1
公开(公告)日：2024-09-19
申请号：US18600495
申请日：2024-03-08
发明人： Kevin A. Bush , Caleb C. Boyd
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.
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公开(公告)号：US20240279759A1
公开(公告)日：2024-08-22
申请号：US18571210
申请日：2022-06-20
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.
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公开(公告)号：US20230175086A1
公开(公告)日：2023-06-08
申请号：US17910970
申请日：2021-03-03
发明人： Stefan Grönkvist , Joakim Andersson
CPC分类号： C21B13/0073 , C25B15/081 , C21B2100/66 , C21B2100/40 , C25B1/04
摘要： A process for the production of sponge iron and a system for the production of sponge iron. The process includes the steps of: producing electrolytic hydrogen and oxygen by electrolysis of water; producing methanol by reacting the electrolytic hydrogen with carbon dioxide; storing the methanol; reforming the methanol using water and/or oxygen to provide carbon dioxide and released hydrogen; providing the released hydrogen as a component portion of a reducing gas to a direct reduction shaft; and reducing iron ore in the direct reduction shaft using the reducing gas to produce the sponge iron.
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公开(公告)号：US20230167517A1
公开(公告)日：2023-06-01
申请号：US17921745
申请日：2021-05-14
CPC分类号： C21B13/0073 , C21B13/02 , C21B2100/40 , C21B2100/64
摘要： A method for producing reduced iron that produces reduced iron by reducing iron oxide charged in a shaft furnace, in which a heated gas mixture which contains a reducing gas and a nitrogen gas, the reducing gas containing 90 volume % or more of a hydrogen gas, is blown into the shaft furnace from a tuyere equipped at a lower portion of a reduction zone of the shaft furnace, at least part of the reducing gas is blown into a cooling zone of the reduced iron provided at a lower portion of the shaft furnace at normal temperature, and the reducing gas that has flowed up in the cooling zone is used for reduction of the iron oxide.
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公开(公告)号：US20230167516A1
公开(公告)日：2023-06-01
申请号：US17921654
申请日：2021-05-13
CPC分类号： C21B13/0073 , C21B13/02 , C21B2100/28 , C21B2100/40 , C21B2100/64
摘要： A method for producing reduced iron that produces reduced iron by reducing iron oxide charged in a shaft furnace, in which a gas mixture which contains a reducing gas and a nitrogen gas, and has a predetermined temperature, is blown into the shaft furnace. The reducing gas contains 90 volume% or more of a hydrogen gas.
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公开(公告)号：US20240279757A1
公开(公告)日：2024-08-22
申请号：US18441101
申请日：2024-02-14
申请人： NUCOR CORPORATION
发明人： Rodney James Dry , Mark Hayton
CPC分类号： C21B13/0013 , C21B13/105 , C21B2100/40 , C21B2400/024 , C21B2400/032 , C21B2400/062 , C21B2400/072
摘要： An improved direct smelting system and process using a smelt reduction vessel (SRV), and optionally, a cyclone converter furnace (CCF). The improved system and process utilizes a fast quench system in which hot process offgas containing molten material is quench-cooled from greater than 1400° C. (2552° F.) to no more than 600° C. (1112° F.) in a time-of-flight of no greater than 1 second. The quenching occurs using water spray injection and vaporization to cool, stress and break solid slag into slag pieces small enough to remove from the quenching system. The improved system eliminates plant availability problems associated with (i) accretion formation in the offgas train as hot process offgas cools down in a conventional (slow) manner to allow for steam-raising for power generation or other heat recovery purposes, and (ii) trigger mechanisms causing slag foaming events in the SRV that propagate up the offgas train.
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公开(公告)号：US09783862B2
公开(公告)日：2017-10-10
申请号：US13496683
申请日：2010-07-14
申请人： Myoung-Kyun Shin , Dong-Won Kim , Sang-Hyun Kim , Jun-Hyuk Lee
发明人： Myoung-Kyun Shin , Dong-Won Kim , Sang-Hyun Kim , Jun-Hyuk Lee
CPC分类号： C21B13/0033 , C21B13/143 , C21B2100/02 , C21B2100/06 , C21B2100/40 , C21B2100/66 , C21B2100/80 , F27D17/004
摘要： Provided is an apparatus for manufacturing reduced iron and a method for manufacturing reduced iron. The method for manufacturing reduced iron includes the steps of: i) drying ores in an ore drier; ii) supplying the dried ores to at least one reduction reactor; iii) reducing the ores in the at least one reduction reactor and manufacturing reduced iron; iv) discharging exhaust gas by which the ores are reduced in the reduction reactor; v) branching the exhaust gas and providing the branched exhaust gas as ore feeding gas; and vi) exchanging heat between the exhaust gas and the ore feeding gas and transferring the sensible heat of the exhaust gas to the ore feeding gas. In the steps of supplying the dried ores to the at least one reduction reactor, the dried ores are supplied to the at least one reduction reactor by using the ore feeding gas.
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10.发明申请公开(公告)号：US20120174711A1
公开(公告)日：2012-07-12
申请号：US13496683
申请日：2010-07-14
申请人： Myoung-Kyun Shin , Dong-Won Kim , Sang-Hyun Kim , Jun-Hyuk Lee
发明人： Myoung-Kyun Shin , Dong-Won Kim , Sang-Hyun Kim , Jun-Hyuk Lee
CPC分类号： C21B13/0033 , C21B13/143 , C21B2100/02 , C21B2100/06 , C21B2100/40 , C21B2100/66 , C21B2100/80 , F27D17/004
摘要： Provided is an apparatus for manufacturing reduced iron and a method for manufacturing reduced iron. The method for manufacturing reduced iron includes the steps of: i) drying ores in an ore drier; ii) supplying the dried ores to at least one reduction reactor; iii) reducing the ores in the at least one reduction reactor and manufacturing reduced iron; iv) discharging exhaust gas by which the ores are reduced in the reduction reactor; v) branching the exhaust gas and providing the branched exhaust gas as ore feeding gas; and vi) exchanging heat between the exhaust gas and the ore feeding gas and transferring the sensible heat of the exhaust gas to the ore feeding gas. In the steps of supplying the dried ores to the at least one reduction reactor, the dried ores are supplied to the at least one reduction reactor by using the ore feeding gas.
摘要翻译： 提供了一种制造还原铁的装置和一种制造还原铁的方法。 制造还原铁的方法包括以下步骤：i）在矿石干燥器中干燥矿石; ii）将干燥的矿石供应至至少一个还原反应器; iii）减少所述至少一个还原反应器中的矿石并制造还原铁; iv）排放还原反应器中矿石减少的废气; v）分流排气并提供分支排气作为进料气体; 和vi）在废气和送矿气体之间进行热交换，并将废气的显热转移到给矿气体。 在将干燥的矿石供应到至少一个还原反应器的步骤中，通过使用给矿气体将干燥的矿石供应至至少一个还原反应器。
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