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1.发明公开METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON UTILIZING A SOURCE OF REDUCING GAS COMPRISING HYDROGEN AND CARBON MONOXIDE 有权对任何直接的制造方法和设备还原铁用氢气和一氧化碳还原气体源
公开(公告)号：EP2622106A1
公开(公告)日：2013-08-07
申请号：EP11785073.5
申请日：2011-09-28
发明人： MARTINIS, Alessandro , CONDOSTA, Michele , ZENDEJAS MARTÍNEZ, Eugenio , DUARTE ESCAREÑO, Pablo Enrique
CPC分类号： C21B13/0073 , B01D53/1475 , B01D53/75 , C21B13/02 , C21B13/029 , C21B2100/282 , C21B2100/44 , C21B2100/64 , C21B2100/66 , Y02P10/122 , Y02P10/128 , Y02P10/136 , Y02P10/265 , Y02P10/283
摘要： The present invention concerns a method and an apparatus for producing DRI (Direct Reduced Iron) utilizing a high-oxidation reducing gas containing carbon monoxide and hydrogen, derived directly or indirectly from the gasification of hydrocarbons or coal, with a high content of oxidants (H20 and CO2). The invention provides a more efficient method and plant comprising a reactor in which particulate material of iron ore comes into contact with a high temperature reducing gas to produce DRI, with lower investment and operating costs, avoiding the need for a fired heater for the reducing gas fed into the reduction reactor. The reducing gas is heated to a temperature above 700°C in two steps, a first step at a temperature below about 400°C to prevent the phenomenon of metal dusting, by exchange of sensible heat supplied by the stream of hot spent gas removed from the reduction reactor; and a second step by means of partial or total combustion with oxygen, maintaining the temperature of the combustion gas below the limits established by the construction materials of the combustion chamber.
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公开(公告)号：EP2427580A1
公开(公告)日：2012-03-14
申请号：EP10727502.6
申请日：2010-05-08
发明人： BECERRA-NOVOA, Jorge, Octavio , LOPEZ-GOMEZ, Ronald, Victor Manuel , MARTINIS, Alessandro , TAVANO, Andrea
CPC分类号： C21B13/143 , C21B13/0086 , C21B13/02 , C21B13/029 , C21B2100/44 , C21B2100/64 , F27B3/18 , Y02P10/136
摘要： An integrated steelmaking plant for merging continuous operation of a reduction reactor producing hot DRI with the batch operation of a DRI melting furnace(s). The reactor produces hot DRI for a DRI melting furnace or cold DRI continuously even when the DRI production exceeds the DRI consumption rate of the furnace or suffers long-term operational delays. The reduction reactor has a DRI cooling zone therein which is selectively operable for cooling DRI when the hot DRI produced in the reactor can't all be consumed by the DRI melting furnace and when the capacity of the DRI bin feeding the melting furnace is insufficient to accumulate additional hot DRI. No separate DRI cooling vessel plus its gas compressor and gas cooling-cleaning system is needed, thus decreasing capital and operational costs. This also permits a flexible and modular construction and operation of a steelmaking plant with high or low pressure reduction reactors.
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3.发明授权METHOD AND APPARATUS FOR PRODUCING DIRECT REDUCED IRON UTILIZING A SOURCE OF REDUCING GAS COMPRISING HYDROGEN AND CARBON MONOXIDE 有权对任何直接的制造方法和设备还原铁用氢气和一氧化碳还原气体源
公开(公告)号：EP2622106B1
公开(公告)日：2016-08-31
申请号：EP11785073.5
申请日：2011-09-28
发明人： MARTINIS, Alessandro , CONDOSTA, Michele , ZENDEJAS MARTÍNEZ, Eugenio , DUARTE ESCAREÑO, Pablo Enrique
CPC分类号： C21B13/0073 , B01D53/1475 , B01D53/75 , C21B13/02 , C21B13/029 , C21B2100/282 , C21B2100/44 , C21B2100/64 , C21B2100/66 , Y02P10/122 , Y02P10/128 , Y02P10/136 , Y02P10/265 , Y02P10/283
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公开(公告)号：EP2794932B1
公开(公告)日：2019-05-01
申请号：EP12848748.5
申请日：2012-12-21
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公开(公告)号：EP2427580B1
公开(公告)日：2018-07-11
申请号：EP10727502.6
申请日：2010-05-08
发明人： BECERRA-NOVOA, Jorge, Octavio , LOPEZ-GOMEZ, Ronald, Victor Manuel , MARTINIS, Alessandro , TAVANO, Andrea
CPC分类号： C21B13/143 , C21B13/0086 , C21B13/02 , C21B13/029 , C21B2100/44 , C21B2100/64 , F27B3/18 , Y02P10/136
摘要： An integrated steelmaking plant for merging continuous operation of a reduction reactor producing hot DRI with the batch operation of a DRI melting furnace(s). The reactor produces hot DRI for a DRI melting furnace or cold DRI continuously even when the DRI production exceeds the DRI consumption rate of the furnace or suffers long-term operational delays. The reduction reactor has a DRI cooling zone therein which is selectively operable for cooling DRI when the hot DRI produced in the reactor can't all be consumed by the DRI melting furnace and when the capacity of the DRI bin feeding the melting furnace is insufficient to accumulate additional hot DRI. No separate DRI cooling vessel plus its gas compressor and gas cooling-cleaning system is needed, thus decreasing capital and operational costs. This also permits a flexible and modular construction and operation of a steelmaking plant with high or low pressure reduction reactors.
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6.发明公开METHOD AND APPARATUS FOR PRODUCTION OF DIRECT REDUCED IRON (DRI) UTILIZING COKE OVEN GAS 审中-公开对任何直接的制造方法和设备还原铁使用焦炉煤气
公开(公告)号：EP2794932A2
公开(公告)日：2014-10-29
申请号：EP12848748.5
申请日：2012-12-21
发明人： MARTINIS, Alessandro , BECERRA-NOVOA, Jorge-octavio , CONDOSTA, Michele , ZENDEJAS-MARTINEZ, Eugenio
CPC分类号： C21B13/0073 , C01B2203/0227 , C01B2203/025 , C10G9/16 , C10G75/00 , C21B13/02 , C21B13/029 , C21B2100/66 , F27D25/00 , F27D25/008 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136 , Y02P10/265 , Y02P10/283
摘要： Direct reduction process and plant for producing DRI comprising a reduction reactor and at least one reducing gas heater typically comprising a convective heating section and a radiant heating section for raising the reducing gas temperature to a level adequate for iron oxides reduction to metallic iron, typically above 850° C., wherein the reducing gas fed to the reduction reactor comprises a stream of reducing gas recycled from the reduction reactor and a make-up stream of coke oven gas containing carbon compounds which may form carbon deposits in the heating path of said heater, namely BTX and other complex carbon compounds. The heater is provided with means for feeding oxidizing agents, for example steam, steam and air and/or oxygen at predetermined heating tubes successively for eliminating the carbon deposits which may form inside the heating tubes of said heater without interrupting the operation of the plant. The make-up stream of cold COG can be combined with the recycled gas at a point in the gas heating path of the heater where the tubes have a skin wall temperature of at least 700° C., or when the mixture of recycled gas and COG is at a temperature above 700° C. for minimizing clogging or fouling of heating equipment.
摘要翻译： 直接还原过程和工厂用于生产DRI包括还原反应器和至少一种还原气体加热器一般包括一个对流加热段和用于提高还原气的温度，以足够的铁的氧化物还原成金属铁的水平的辐射加热段，典型地高于 850℃，进料worin到还原反应器的还原气体包括从所述还原反应器和其可形成的碳沉积物在所述加热器的加热路径焦炉气的含碳化合物的补充流再循环还原气体的流 即BTX和其它复杂的碳化合物。 加热器被用于按预定的加热管连续供给氧化剂，例如蒸汽，蒸汽和空气和/或氧气用于消除碳沉积物可形成所述加热器的加热管内，而不会中断的计划手术的装置。 冷COG的补充料流可以与再循环气体在加热器的气体加热通路，其中管具有壁皮肤温度至少700℃，或者当再循环气体的混合物和一个点相结合 COG是在高于700℃的温度下最小化堵塞或加热设备结垢。
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7.发明公开DIRECT REDUCTION DEVICE TO OBTAIN METAL IRON WITH A HIGH CONTENT OF CARBON IN THE FORM OF CARBIDE 审中-公开直接还原设备生产铁在碳化物形式的碳含量较高
公开(公告)号：EP1228249A1
公开(公告)日：2002-08-07
申请号：EP00960939.7
申请日：2000-10-04
CPC分类号： C21B13/0086 , C21B13/02 , Y02P10/136
摘要： Direct reduction device (10) of the gravitational type to obtain iron carbide starting from iron oxide, comprising a reduction and carburation reactor (12) below which a cooling and passivation container (26) is arranged wherein the iron carbide is suitably cooled and passivated. Between the reactor (12) and the container (26) a valve for solids (24) is interposed suitable to regulate the transfer of the iron carbide.
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