Process for the direct reduction of iron ores
    1.
    发明授权
    Process for the direct reduction of iron ores 失效
    直接还原铁矿石的工艺

    公开(公告)号:US4248623A

    公开(公告)日:1981-02-03

    申请号:US18977

    申请日:1979-03-09

    IPC分类号: C21B13/02 F27B1/08 F27B1/16

    摘要: A process for the direct reduction of iron ore in a shaft furnace having an upper reducing zone and a lower cooling zone in which reducing gas is introduced to the furnace at the bottom of the reducing zone around the periphery of the furnace, exhausted reducing gas or top gas is removed from the top of the furnace, cleaned, mixed with additional hydrocarbons, and reinjected into the furnace below the reducing zone. The hot reducing gas is injected serially into different sectors of the cross-section of the furnace and at varying velocities to force upflowing cleaned top gas to change its flow path or its flow rate, or both, periodically. Apparatus for accomplishing the method is also disclosed.

    摘要翻译: 一种用于在具有上部还原区和下部冷却区的竖炉中直接还原铁矿石的方法,其中还原气体在炉周围的还原区的底部被引入到炉中,排出的还原气体或 将顶部气体从炉顶部除去,清洁,与另外的烃混合,并且重新注入到还原区下方的炉中。 热还原气体连续注入到炉的横截面的不同部分中,并以不同的速度喷射,以迫使向上流动的清洁的顶部气体周期性地改变其流动路径或其流速,或者两者。 还公开了用于实现该方法的装置。

    Apparatus for the direct reduction of iron ores
    2.
    发明授权
    Apparatus for the direct reduction of iron ores 失效
    用于直接还原铁矿石的设备

    公开(公告)号:US4374585A

    公开(公告)日:1983-02-22

    申请号:US176894

    申请日:1980-08-11

    IPC分类号: C21B13/00 C21B13/02 F27B1/16

    摘要: A process for the direct reduction of iron ore in a shaft furnace having an upper reducing zone and a lower cooling zone in which reducing gas is introduced to the furnace at the bottom of the reducing zone around the periphery of the furnace, exhausted reducing gas or top gas is removed from the top of the furnace, cleaned, mixed with additional hydrocarbons, and reinjected into the furnace below the reducing zone. The hot reducing gas is injected serially into different sectors of the cross-section of the furnace and at varying velocities to force upflowing cleaned top gas to change its flow path or its flow rate, or both, periodically. Apparatus for accomplishing the method is also disclosed.

    摘要翻译: 一种用于在具有上部还原区和下部冷却区的竖炉中直接还原铁矿石的方法,其中还原气体在炉周围的还原区的底部被引入到炉中,排出的还原气体或 将顶部气体从炉顶部除去,清洁,与另外的烃混合,并且重新注入到还原区下方的炉中。 热还原气体连续注入到炉的横截面的不同部分中,并以不同的速度喷射,以迫使向上流动的清洁的顶部气体周期性地改变其流动路径或其流速,或者两者。 还公开了用于实现该方法的装置。

    Apparatus for cooling a hot product gas
    3.
    发明授权
    Apparatus for cooling a hot product gas 失效
    用于冷却热产品气体的装置

    公开(公告)号:US4874037A

    公开(公告)日:1989-10-17

    申请号:US756294

    申请日:1985-07-18

    摘要: An apparatus for cooling a hot product gas, the latter is passed through a tubular zone. The product gas contains particles which, on entering the tubular zone, are tacky, but lose their tackiness through cooling in said zone. Within said zone a cooling gas flow forms a gas wall, which prevents contact between the product gas or the tacky particles contained therein, and one of the fixed walls in the tubular zone. Thus within an outlet connection (2) forming the tubular zone is provided an anular insert (3), which forms a gap (4) with the outlet connection. A cooling gas is blown into this gap counter to the flow direction of the product gas. At the end of the insert, this cooling gas is deflected by the product gas and flows within the insert in the same direction as the product gas and protects the inner wall of the insert from the latter. This product gas is cooled to such an extent by the action of the cooling gas that the particles in the product gas have lost their tackiness at the outlet-side end of the insert.

    摘要翻译: 用于冷却热产物气体的装置,其通过管状区域。 产物气体包含在进入管状区域时发粘的颗粒,但是通过在所述区域中的冷却而失去其粘性。 在所述区域内,冷却气体流形成气体壁,其防止产物气体或其中所含的粘性颗粒与管状区域中的一个固定壁之间的接触。 因此,在形成管状区域的出口连接件(2)内设置有与出口连接件形成间隙(4)的孔口插入件(3)。 冷却气体与产品气体的流动方向相反地吹入该间隙。 在插入件的末端,该冷却气体被产品气体偏转,并沿与产品气体相同的方向在插入件内流动,并保护插入件的内壁免于产生气体。 该产品气体通过冷却气体的作用被冷却到产品气体中的颗粒在插入件的出口侧端部失去粘性。

    Process for the production of pig iron using cyclone
    4.
    发明授权
    Process for the production of pig iron using cyclone 失效
    使用旋风式生产生铁的工艺

    公开(公告)号:US4851039A

    公开(公告)日:1989-07-25

    申请号:US188715

    申请日:1988-04-29

    申请人: Gero Papst Rolf Hauk

    发明人: Gero Papst Rolf Hauk

    IPC分类号: C21B11/08 C21B11/00 C21B13/14

    摘要: A process for the production of pig iron from fine ore is described, in which initially the fine ore undergoes prereduction to a degree of metallization of preferably 65 to 75%. The sponge iron obtained is then melted down and under goes a final reduction. This process takes place in a melting cyclone 2, to which the sponge iron is supplied by means of a central opening 1 and into which are tangetially blown via a lateral opening 3 a carbon carrier, an oxygen-containing gas and optionally fluxes. As a result of the angular momentum produced, the sponge iron particles are deflected to the side and melted and finally reduced by the combustion gases of the carbon carrier. The molten iron collects in an iron bath 8. The gas produced in the melting cyclone is cooled from approximately 1500.degree. C. to approximately 800.degree. C. in a waste heat system 10, as well as by admixing cooling gas supplied via a line 11 and is then used for the prereduction of the iron ore.

    摘要翻译: 描述了从细矿石生产生铁的方法,其中最初将细矿石预先还原至优选65至75%的金属化程度。 然后将获得的海绵铁熔化,并进行最终还原。 该过程在熔融旋流器2中进行,海绵铁通过中心开口1供应到其中,通过侧向开口3,碳载体,含氧气体和任选的助熔剂对其进行正向吹送。 作为产生角动量的结果,海绵铁颗粒被偏转到侧面并且被碳载体的燃烧气体熔化并最终减少。 铁水在铁浴槽8中收集。在废热系统10中,将熔融旋流器中产生的气体从大约1500℃冷却至约800℃,以及通过混合通过管线11供应的冷却气体 然后用于铁矿石的预还原。

    Fluidized bed arrangement for the production of molten pig iron and
steel pre-products
    5.
    发明授权
    Fluidized bed arrangement for the production of molten pig iron and steel pre-products 失效
    用于生产生铁和钢铁预产品的流化床装置

    公开(公告)号:US4805880A

    公开(公告)日:1989-02-21

    申请号:US099233

    申请日:1987-09-21

    摘要: A process and an arrangement for the production of molten pig iron or steel pre-products from particulate ferrous material as well as for the production of reducing gas in a meltdown gasifier. A fluidized bed of coke particles is formed by the addition of coal and the injection of oxygen-containing gas. In order to ensure a satisfactory mode of operation of the meltdown gasifier even if coal of inferior quality with a high moisture content and a high portion of volatile matter is used, additional heat is supplied to the meltdown gasifier above the feed lines for the fluidized-bed-forming oxygen-containing gas by burning and/or degassing coal particles separated from the reducing gas.

    摘要翻译: 一种用于生产来自颗粒状亚铁材料的生铁或钢铁预产品以及用于在熔化气化炉中生产还原气体的方法和装置。 通过加入煤和注入含氧气体形成焦炭颗粒流化床。 为了确保熔化气化器的令人满意的操作模式,即使使用具有高水分含量和高挥发性物质的质量差的煤,另外的热量也被供应给用于流化床的进料管线上的熔化气化器, 通过燃烧和/或脱气从还原气体分离的煤颗粒来形成含氧气体。

    Process for producing gas containing CO and H.sub.2
    6.
    发明授权
    Process for producing gas containing CO and H.sub.2 失效
    生产含CO和H2的气体的方法

    公开(公告)号:US4865626A

    公开(公告)日:1989-09-12

    申请号:US225241

    申请日:1988-07-28

    IPC分类号: C10J3/54

    摘要: A process for producing gas containing CO and H.sub.2 from pulverulent to coarse-grained coal in a coal gasifier in which a fluidized bed is produced, and to which are supplied coal, oxygen and/or one or more oxygen-containing gases. The coal is supplied in counter-current to the gas removed from the fluidized bed. Thus, the coal is dried, degassed and preheated before it enters the fluidized bed. The upper limit of the particle size of the coal is between about 10 mm and 40 mm, and is determined by the volatile matter content of the coal.

    摘要翻译: 在生产流化床的煤气化炉中生产含有CO和H 2的从粉状至粗粒煤的气体的方法,并向其供应煤,氧和/或一种或多种含氧气体。 煤被从与流化床去除的气体逆流供应。 因此,在进入流化床之前将煤干燥,脱气并预热。 煤的粒度上限在约10mm至40mm之间,由煤的挥发物质含量决定。

    Process for the production of molten pig iron and steel pre-products
    7.
    发明授权
    Process for the production of molten pig iron and steel pre-products 失效
    生产生铁和钢铁前期产品的工艺

    公开(公告)号:US4728360A

    公开(公告)日:1988-03-01

    申请号:US797820

    申请日:1985-11-14

    摘要: A process and an arrangement for the production of molten pig iron or steel pre-products from particulate ferrous material as well as for the production of reducing gas in a meltdown gasifier. A fluidized bed of coke particles is formed by the addition of coal and the injection of oxygen-containing gas. In order to ensure a satisfactory mode of operation of the meltdown gasifier even if coal of inferior quality with a high moisture content and a high portion of volatile matter is used, additional heat is supplied to the meltdown gasifier above the feed lines for the fluidized-bed-forming oxygen-containing gas by burning and/or degassing coal particles separated from the reducing gas.

    摘要翻译: 一种用于生产来自颗粒状亚铁材料的生铁或钢铁预产品以及用于在熔化气化炉中生产还原气体的方法和装置。 通过加入煤和注入含氧气体形成焦炭颗粒流化床。 为了确保熔化气化器的令人满意的操作模式,即使使用具有高水分含量和高挥发性物质的质量差的煤,另外的热量也被供应给用于流化床的进料管线上的熔化气化器, 通过燃烧和/或脱气从还原气体分离的煤颗粒来形成含氧气体。

    Process for gaining electric energy in addition to producing molten pig
iron and an arrangement for carrying out the process
    8.
    发明授权
    Process for gaining electric energy in addition to producing molten pig iron and an arrangement for carrying out the process 失效
    除了生产熔融生铁以外还有获得电能的方法以及用于执行该过程的装置

    公开(公告)号:US4861369A

    公开(公告)日:1989-08-29

    申请号:US125482

    申请日:1987-11-25

    IPC分类号: C21B13/00 C21B13/14 F25J3/04

    摘要: To gain electric energy in addition to producing molten pig iron, from lumpy iron ore and solid fuels, by using a direct reduction zone for the reduction of the iron ore to sponge iron and a meltdown-gasifying zone for the production of molten pig iron, carbon carriers are used in, and oxygen-containing gases are supplied to, the meltdown-gasifying zone. The reduction gas forming is fed into the direct reduction zone. The reduction gas reacted there is supplied as top gas to a power generation plant including a turbine. In order to adapt the power generation to the power consumption by simultaneously avoiding any influence on the metallurgical conditions at the production of pig iron and its further processing, the charge of carbon carriers into the meltdown-gasifying zone is varied as a function of the gas consumption of the power generation plant in a manner that, with a higher gas consumption, the volatile constituents of the charge are increased and the C.sub.fix charge is reduced and, with a lower gas consumption, it is proceeded the other way round, while keeping the amount and composition of the pig iron produced substantially constant.

    摘要翻译: 通过使用直接还原区将铁矿石还原成海绵铁,以及用于生产熔融生铁的熔化气化区,除了生产熔融生铁以外,还可以获得电能,除铁矿石和固体燃料外, 使用碳载体,并且将含氧气体供应至熔化气化区。 还原气体形成被送入直接还原区。 在那里反应的还原气体作为顶部气体供给到包括涡轮机的发电厂。 为了通过同时避免对生铁生产中的冶金条件的任何影响及其进一步加工,使发电量适应功率消耗,进入熔化气化区的碳载体的电荷随着气体的变化而变化 发电厂的消耗以较高的天然气消耗量增加,挥发性成分增加,Cfix充电量减少,而在较低的耗气量的情况下,以相反的方式进行,同时保持 生铁的量和组成基本上是恒定的。

    Melting gasifier
    10.
    发明授权
    Melting gasifier 失效
    熔化气化器

    公开(公告)号:US4846449A

    公开(公告)日:1989-07-11

    申请号:US136374

    申请日:1987-12-22

    摘要: A novel melting gasifier (7) is disclosed, in which material at least largely comprising metal is melted in a fluidized bed. The latter is maintained by oxygen-containing gas laterally injected through approximately equidistant nozzles in the lower part of the melting gasifier. A carbon carrier and from above the material to be melted are also introduced into the melting gasifier. Over at least part of the fluidized bed height, the gasifier has a horizontal cross-section, which has different dimensions in two directions perpendicular to one another. The nozzles can project by different amounts into the gasifier vessel.

    摘要翻译: 公开了一种新颖的熔融气化器(7),其中至少在很大程度上包含金属的材料在流化床中熔化。 后者通过在熔化气化器的下部中通过大致等距的喷嘴横向注入的含氧气体来维持。 碳载体和从待熔化的材料上方也被引入熔化气化器中。 在流化床高度的至少一部分上,气化器具有水平横截面,其在彼此垂直的两个方向上具有不同的尺寸。 喷嘴可以通过不同的量投射到气化器容器中。