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82. 发明公开

EP1991711A1 REDUCTION PROCESS AND PLANT 有权
标题翻译：还原的方法和系统HAVE
公开(公告)号：EP1991711A1
公开(公告)日：2008-11-19
申请号：EP07704249.7
申请日：2007-01-30
申请人： DANIELI & C. OFFICINE MECCANICHE S.p.A.
发明人： MARTINIS, Alessandro , TAVANO, Andrea , FRANCO, Barbara
IPC分类号： C21B13/02
CPC分类号： C21B13/0073 , C21B13/0086 , C21B13/02 , C21B13/029 , C21B2100/22 , C21B2100/26 , C21B2100/282 , C21B2100/44 , C21B2100/64 , Y02P10/122 , Y02P10/128 , Y02P10/136 , Y02P10/143
摘要： Reduction process and relative plant for the production of metallic iron by means of the direct reduction of iron ore, in which a reduction shaft is connected to a source of reducing gas obtained from the gasification of coal. The process advantageously comprises a step in which a portion or all of the synthesis gas entering the plant circuit is processed to separate the methane from the rest of the components of said synthesis gas. The advantageous management of the extracted methane enables the entire reduction process to be optimized, making the efficiency of the process independent of the methane content in the original synthesis gas and making it possible to control the carbon content of the product more accurately and more easily.

83. 发明公开

EP0428098A3 Improved method of reducing iron ore 失效
标题翻译：减少铁矿石的改进方法
公开(公告)号：EP0428098A3
公开(公告)日：1991-11-21
申请号：EP90121614.3
申请日：1990-11-12
申请人： HYLSA S.A. de C.V.
发明人： Villarreal-Trevino, Juan Antonio , Zendejas-Martinez, Engenio , Martinez-Vera, Erique Ramon
IPC分类号： C21B13/02
CPC分类号： C21B13/02 , C21B13/029 , C21B2100/22 , C21B2100/282 , C21B2100/64 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/136 , Y02P10/143
摘要： A process for the gaseous reduction of iron ore to sponge in a vertical shaft, moving bed reactor wherein a hot gaseous mixture of hydrogen and carbon monoxide generated by the reformation of methane or natural gas, is used to reduce the ore without the need for an external catalytic reformer. A reducing gas recycle loop to which make-up natural gas and steam are fed in the proper proportions is established with the product sponge iron in the reduction reactor being used to catalyze hydrocarbon reformation, provided that the carbon content of the recycled gas is maintained low by removing carbon dioxide therefrom. High overall process thermal efficiency and operating cost effectiveness is achieved by also establishing a steam and/or hot water loops wherein all process steam requirements are met through the utilization of hot water discharge from the quench cooler and advantageously also the generation of steam by the reclamation of waste heat from spent hot reducing gas leaving the reactor, thereby eliminating the need for importing costly process steam.

84. 发明公开

EP0428098A2 Improved method of reducing iron ore 失效
标题翻译： Verbeetes Verfahren zur Reduktion von Eisenerzen。
公开(公告)号：EP0428098A2
公开(公告)日：1991-05-22
申请号：EP90121614.3
申请日：1990-11-12
申请人： HYLSA S.A. de C.V.
发明人： Villarreal-Trevino, Juan Antonio , Zendejas-Martinez, Engenio , Martinez-Vera, Erique Ramon
IPC分类号： C21B13/02
CPC分类号： C21B13/02 , C21B13/029 , C21B2100/22 , C21B2100/282 , C21B2100/64 , C21B2100/66 , Y02P10/122 , Y02P10/126 , Y02P10/136 , Y02P10/143
摘要： A process for the gaseous reduction of iron ore to sponge in a vertical shaft, moving bed reactor wherein a hot gaseous mixture of hydrogen and carbon monoxide generated by the reformation of methane or natural gas, is used to reduce the ore without the need for an external catalytic reformer. A reducing gas recycle loop to which make-up natural gas and steam are fed in the proper proportions is established with the product sponge iron in the reduction reactor being used to catalyze hydrocarbon reformation, provided that the carbon content of the recycled gas is maintained low by removing carbon dioxide therefrom. High overall process thermal efficiency and operating cost effectiveness is achieved by also establishing a steam and/or hot water loops wherein all process steam requirements are met through the utilization of hot water discharge from the quench cooler and advantageously also the generation of steam by the reclamation of waste heat from spent hot reducing gas leaving the reactor, thereby eliminating the need for importing costly process steam.
摘要翻译：用于在垂直轴中将铁矿石气态还原成海绵的方法，移动床反应器，其中通过甲烷或天然气的重整产生的氢气和一氧化碳的热气体混合物用于减少矿石，而不需要外部催化重整器。建立了以适当比例供给补充天然气和蒸汽的还原气体循环回路，还原反应器中的产品海绵铁用于催化烃改性，只要循环气体的碳含量维持在低水平通过从其中除去二氧化碳。通过建立蒸汽和/或热水循环来实现高整体工艺热效率和运行成本效益，其中通过利用来自骤冷冷却器的热水排放满足所有工艺蒸汽需求，并且有利地还通过回收产生蒸汽来自废热的还原气体离开反应器的废热，从而无需进口昂贵的工艺蒸汽。

85. 发明公开

EP0319966A3 Method of smelting reduction of ores containing metal oxides 无效
标题翻译：减少含有金属氧化物的矿石的方法
公开(公告)号：EP0319966A3
公开(公告)日：1991-02-27
申请号：EP88120482.0
申请日：1988-12-07
申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA
发明人： Maeda, Takuya , Murakami, Keikichi , Yamada, Tsutomu , Kishimoto, Mitsuharu , Yajima, Kenichi
IPC分类号： C21B13/14
CPC分类号： C21B13/143 , C21B13/029 , C21B2100/22 , C21B2100/26 , C21B2100/282 , C21B2100/44 , C21B2100/60 , Y02P10/136
摘要： Metal oxide ore is subjected to smelting reduction to obtain the molten metal by a method which comprises prereducing said ore in solid state in a prereduction furnace (1), thereafter melting said ore and carrying out final reduction thereof in a smelting reduction furnace (2), and at the same time introducing gas generated in said smelting reduction furnace (2) and having reductive capability into said prereduction furnace (1), said method being characterized by the rate of prereducing said ore in said prereduction furnace (1) being controlled at a value with a maximum of the order of 33 percent for raising the rate of utilization of energy to a maximum limit.

86. 发明专利

JPS61104011A Melt reduction method of iron ore 失效
标题翻译：铁矿石冶炼减少方法
公开(公告)号：JPS61104011A
公开(公告)日：1986-05-22
申请号：JP22504884
申请日：1984-10-25
申请人： Nippon Tekko Renmei
发明人： HASEBA SHIGERU
IPC分类号： C21B11/00 , C21B13/00 , C21B13/14
CPC分类号： C21B13/143 , C21B13/029 , C21B2100/282 , C21B2100/60 , C21B2100/64 , Y02P10/122 , Y02P10/128
摘要： PURPOSE:To make effective use of the waste gas and temp. of respective furnaces in a method for charging iron ore cooled after preliminary reduction together with a carbonaceous material, slag forming agent and oxygen into a melt reduction furnace by using the gas of the preliminary reduction furnace for heating up the waste gas of said furnace. CONSTITUTION:The iron ore reduction preliminarily in the fluidized bed type preliminary reduction furnace 1 is cooled by a cooler 8 and is charged together with the carbonaceous material, slag forming agent, oxygen, etc., by a carrier gas into the melt reduction furnace 2 from the bottom thereof to produce molten M.Fe. The waste gas C discharged from the upper part of the furnace 2 in this stage is cooled by a heat exchanger 5 and is cooled after the gas is compressed by a compressor. CO2 is removed from said gas in a decarburization device 6 and thereafter the gas is supplied to a heat exchanger 4. The waste gas here is subjected to a heat exchange with the waste gas B which is heated to a high temp. by the partial self combustion of the waste gas A from the furnace 1 by the theoretical combustion oxygen supplied by a self-combustion type heater 3. The gas is then supplied as the heated waste gas D from the lower part of the furnace 1.
摘要翻译：目的：有效利用废气和温室。在通过使用预还原炉的气体来加热所述炉的废气的方法中，将预先还原后的铁矿石与碳质材料，熔渣形成剂和氧气一起加入到熔融还原炉中的方法中的各个炉子。构成：预先将流化床型预还原炉1中的铁矿石还原由冷却器8冷却，并通过载气与碳质材料，熔渣形成剂，氧等一起装入熔融还原炉2 从其底部产生熔融的M.Fe。在该阶段从炉2的上部排出的废气C由热交换器5冷却，并在气体被压缩机压缩之后被冷却。在脱碳装置6中从所述气体中除去CO 2，之后将气体供给到热交换器4.这里的废气与被加热到高温的废气B进行热交换。通过由自燃式加热器3供给的理论燃烧氧将来自炉1的废气A的部分自燃。然后从炉1的下部将气体作为加热废气D供给。

87. 发明专利

JPS61104010A Melt reduction method of iron ore 失效
标题翻译：铁矿石冶炼减少方法
公开(公告)号：JPS61104010A
公开(公告)日：1986-05-22
申请号：JP22504784
申请日：1984-10-25
申请人： Nippon Tekko Renmei
发明人： HASEBA SHIGERU
IPC分类号： C21B11/00 , C21B13/14
CPC分类号： C21B13/143 , C21B13/029 , C21B2100/282 , C21B2100/60 , C21B2100/64 , Y02P10/122 , Y02P10/128
摘要： PURPOSE:To reduce efficiently and preliminarily iron ore in a method charging preliminarily reduced iron ore, carbonaceous material, slag forming agent and O2 into a melt reduction furnace by feeding the powdery iron ore catalyst into the waste gas of the above-described furnace. CONSTITUTION:The iron ore catalyst which is powder having 1-150m /g specific surface area is fed to the waste gas C from the melt reduction furnace 2 near the outlet of the furnace 2 and in the range of 300-1,000 deg.C shown by H after a waste heat recovering boiler 5. The CO and H2O in the gas C is brought into reaction to CO2+H2 and to increase the content of H2 to form the waste gas C'. The formed CO2 is removed by a decarburization device 6, by which the decarburized waste gas is obtd. Such waste gas is heated and is fed to the preliminary reduction furnace 1 where the iron ore is reduced. The preliminarily reduced iron ore is charged together with the other raw material from the base of the furnace 2. On the other hand, the fed powdery iron ore catalyst is separated and recovered from the waste gas C' by a filter.
摘要翻译：目的：通过将粉状铁矿石催化剂送入上述炉子的废气中，通过将预先还原的铁矿石，含碳材料，成矿剂和O 2的方法有效地和初步地减少到熔融还原炉中。构成：将具有1-150m 2 / g比表面积的粉末的铁矿石催化剂从炉2出口附近的熔融还原炉2供给到废气C中，并且在300-1,000度的范围内在废热回收锅炉5之后由H表示.C气体C中的CO和H 2与CO 2 + H 2反应并增加H 2的含量以形成废气C'。通过脱碳装置6去除形成的CO 2，通过该脱碳装置6可以获得脱碳废气。这种废气被加热并被送入预还原炉1，铁矿石被还原。将预先还原的铁矿石与来自炉子2的其他原料一起加入。另一方面，通过过滤器将进料的粉状铁矿石催化剂从废气C'中分离回收。

88. 发明专利

JPS59140321A Method of utilizing combustion waste gas 失效
标题翻译：使用燃烧废气的方法
公开(公告)号：JPS59140321A
公开(公告)日：1984-08-11
申请号：JP1445583
申请日：1983-01-31
申请人： Nippon Steel Corp
发明人： TAKETOMO EIJI , FUJIURA MASAMI
IPC分类号： B01D53/22 , C21B7/00 , C21C5/38 , C21C5/48 , F23J15/00 , F27D17/00
CPC分类号： C21B7/002 , C21B13/029 , C21B2100/282 , Y02P10/122
摘要： PURPOSE:To utilize easily and economically combustion waste gas by introducing said gas to a gas separating apparatus incorporating a nonporous polymer membrane, concentrating, separating CO2, and using the separated gas for cooling bottom-blown multipipe nozzles of a converter. CONSTITUTION:After a part of separated waste gas of a hot blast furnace is cooled through a gas cooler 1, the pressure is elevated by a blower 2 and the gas is introduced to a separator 3 incorporating a nonporous polymer membrane. Gaseous CO2 having high transmittance is transmitted through the polymer membrane to obtain a gas enriched with CO2, and the nontransmitted gas is released from the system through a pipe 4. Then, the pressure of the gas enriched CO2 is elevated by a compressor 6 via a vacuum pump 5 and used as a cooling gas for bottom-blown multipipe nozzles of a converter 7 by adding a part of high-purity gaseous CO2 procured on the market according to necessity.
摘要翻译：目的：通过将所述气体引入到包含无孔聚合物膜的气体分离装置，浓缩，分离CO 2以及使用分离的气体来冷却转炉的底吹多管喷嘴来便利和经济地燃烧废气。构成：通过气体冷却器1将热鼓风炉的一部分分离的废气冷却后，通过鼓风机2升压，将气体导入含有无孔聚合物膜的分离器3。具有高透射率的气态CO 2通过聚合物膜传递以获得富含CO 2的气体，并且非传输气体通过管道4从系统释放。然后，通过压缩机6经由真空泵5，并通过根据需要添加市售的一部分高纯度气态二氧化碳，用作转炉7的底吹多管喷嘴的冷却气体。

89. 发明申请

WO2013093640A2 METHOD AND APPARATUS FOR PRODUCTION OF DIRECT REDUCED IRON (DRI) UTILIZING COKE OVEN GAS 审中-公开
标题翻译：利用焦炉煤气生产直接还原铁（DRI）的方法和设备
公开(公告)号：WO2013093640A2
公开(公告)日：2013-06-27
申请号：PCT/IB2012/003062
申请日：2012-12-21
申请人： HYL TECHNOLOGIES, S.A. DE C.V. , DANIELI & C. OFFICINE MECCANICHE, S.P.A.
发明人： MARTINIS, Alessandro , BECERRA-NOVOA, Jorge-octavio , CONDOSTA, Michele , ZENDEJAS-MARTINEZ, Eugenio
IPC分类号： C21B13/00
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：用于生产DRI的直接还原方法和设备包括还原反应器和至少一个还原气体加热器，所述还原气体加热器通常包括对流加热部分和辐射加热部分，用于将还原气体温度升高到足以使铁氧化物还原成金属铁，典型地在850℃以上，其中供入还原反应器的还原气体包括从还原反应器循环的还原气流和含碳化合物的焦炉气的补充气流，所述碳化合物可形成碳沉积物在所述加热器的加热路径中，即BTX和其他复合碳化合物。加热器设有用于在预定的加热管处连续供给氧化剂例如蒸汽，蒸汽和空气和/或氧气的装置，以消除可能在所述加热器的加热管内部形成的积碳，而不中断设备的运行。冷COG的补充流可以与加热器的气体加热路径中的点处的再循环气体结合，其中管的壁表面温度为至少700℃，或者当再循环气体和COG的混合物处于700℃以上的温度以最小化加热设备的堵塞或结垢。

90. 发明申请

WO2011012964A2 METHOD FOR PRODUCING DIRECT REDUCED IRON WITH LIMITED CO2 EMISSIONS 审中-公开
标题翻译：用有限的CO 2排放生产直接还原铁的方法
公开(公告)号：WO2011012964A2
公开(公告)日：2011-02-03
申请号：PCT/IB2010001813
申请日：2010-07-21
申请人： HYL TECHNOLOGIES SA DE CV , DANIELI & C OFFICCINE MECCANICHE S P A , DUARTE-ESCARENO PABLO ENRIQUE , ZENDEJAS-MATINEZ EUGENIO , TAVANO ANDREA , MARTINIS ALESSANDRO , GASPERA OMAR DELLA
发明人： DUARTE-ESCARENO PABLO ENRIQUE , ZENDEJAS-MATINEZ EUGENIO , TAVANO ANDREA , MARTINIS ALESSANDRO , GASPERA OMAR DELLA
IPC分类号： C21B13/02
CPC分类号： C21B13/02 , B01D53/047 , B01D53/1475 , B01D53/228 , B01D53/75 , B01D2257/502 , B01D2257/702 , C21B13/029 , C21B2100/02 , C21B2100/04 , C21B2100/22 , C21B2100/28 , C21B2100/282 , Y02C10/06 , Y02C10/08 , Y02C10/10 , Y02C20/20 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136 , Y02P10/143 , Y02P10/216
摘要： A method and apparatus for producing direct reduced iron (DRI), also known as sponge iron, by means of direct contact of iron oxides with a stream of recycled and regenerated hot reducing gases containing hydrogen and carbon monoxide. The invention provides a way for decreasing the uncontained emission of CO2 to the atmosphere produced by combustion of carbon-bearing fuels in the reducing gas heater by substituting, at least partially, a gas stream mainly composed of hydrogen in lieu of the usual carbon-bearing fuels. The hydrogen fuel stream, depleted of CO2 by means of a physical gas separation unit (which can be a PSA/VPSA type adsorption unit, a gas separation membrane unit or combination of PSA/VPSA unit and a gas separation membrane unit) is derived from at least a portion of a stream of regenerated reducing gases being recycled to the reduction reactor. The derived hydrogen fuel stream is combusted in the reducing gas heater and/or other thermal equipment in the reduction plant, thus decreasing the CO2 emissions directly to the atmosphere.
摘要翻译：通过氧化铁与含有氢气和一氧化碳的再循环和再生热还原气流的直接接触来生产直接还原铁（DRI）（也称为海绵铁）的方法和设备。本发明提供了一种方法，用于通过至少部分地替代主要由氢气组成的气流代替通常的含碳气体来减少由还原气体加热器中含碳燃料燃烧所产生的大气中的CO 2的非容积排放燃料。通过物理气体分离单元（其可以是PSA / VPSA型吸附单元，气体分离膜单元或PSA / VPSA单元和气体分离膜单元的组合）耗尽了CO 2的氢燃料流得自再生的还原气流的至少一部分被再循环到还原反应器。衍生的氢燃料流在还原设备中的还原气体加热器和/或其它热设备中燃烧，从而将CO 2排放物直接减少到大气中。

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