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1.发明申请METHOD AND APPARATUS FOR THE DIRECT REDUCTION OF IRON ORES UTILIZING SYNGAS 审中-公开直接还原铁矿石利用方法和装置的方法和装置公开(公告)号：US20100162852A1
公开(公告)日：2010-07-01
申请号：US12601984
申请日：2008-05-14
IPC分类号： C21B13/00
CPC分类号： C21B13/02 , C21B13/0073 , C21B2100/24 , C21B2100/282 , C21B2100/42 , C21B2100/64 , Y02P10/122 , Y02P10/136
摘要： A direct reduction plant for the production of a metallized product (DRI) by the reduction of iron ores in lump or pellet form, wherein the reducing gas utilized in the DRI reactor contains acid gases such as sulphur compounds and carbon dioxide. The make-up reducing gases are typically produced by partial oxidation of hydrocarbons (syngas) at a high pressure while the DRI reactor is usually operated at a lower pressure. The pressure level of the reducing gas effluent from the DRI reactor (top gas), after cooling and dewatering, is increased to the pressure level of the syngas and the resulting recycle reducing gas is then combined with the make-up syngas and treated in a single acid-gas absorption unit forming a combined stream of clean upgraded reducing gas which thereafter is expanded in a turbine for lowering combined reducing gas pressure to the pressure level of the DRI reactor and is then heated to a temperature preferably above 950° C. and used in the DRI reactor for producing said DRI. The compressor for raising the pressure of the initially cool recycle gas uses energy from the expansion turbine (used for lowering the pressure of the high-pressure combined reducing gas).
摘要翻译： 用于通过还原块状或丸状铁矿石生产金属化产品（DRI）的直接还原装置，其中在DRI反应器中使用的还原气体含有酸性气体如硫化合物和二氧化碳。 补充还原气体通常通过在高压下烃（合成气）的部分氧化产生，而DRI反应器通常在较低压力下操作。 来自DRI反应器（顶部气体）的还原性气体流出物在冷却和脱水后的压力水平增加到合成气的压力水平，然后将所得的再循环还原气体与补充合成气合并，并在 单一酸性气体吸收单元形成清洁升级还原气体的组合流，其后在涡轮机中膨胀，以将组合的还原气体压力降低至DRI反应器的压力水平，然后被加热至优选高于950℃的温度， 用于生产DRI的DRI反应器。 用于提高初始冷却循环气体的压力的压缩机使用来自膨胀涡轮机的能量（用于降低高压组合还原气体的压力）。
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2.发明授权Method and apparatus for improved use of primary energy sources in integrated steel plants 有权一体化钢铁厂改善一次能源利用的方法和装置公开(公告)号：US06986800B2
公开(公告)日：2006-01-17
申请号：US10846508
申请日：2004-05-17
IPC分类号： C21B5/06
CPC分类号： C21B5/008 , C21B13/143 , C21B2100/24 , C21B2100/282 , C21B2100/60 , C21B2100/66 , C21C5/285 , Y02P10/122 , Y02P10/136
摘要： A method and an integrated steel plant wherein, instead of using coke oven gases, converter gases and blast furnace top gases available as fuel for power generation or other heating purposes, these gases are more efficiently utilized as chemical agents for direct reduction of iron ores producing DRI.DRI is charged to blast furnaces increasing production of crude steel without increasing the capacities of the coke oven plant and blast furnaces and without changes in the quality of the crude steel, or, if production rate is maintained, the fossil fuels specific consumption is significantly reduced.Utilisation of primary fossil energy according to the invention also reduces the specific CO2 emissions per ton of crude steel. The specific CO2 emission in conventional integrated mills is about 1.6 tons of CO2 per ton of crude steel.
摘要翻译： 一种方法和综合钢铁厂，其中，代替使用焦炉煤气，转炉气体和高炉顶部气体作为用于发电或其他加热目的的燃料，这些气体被更有效地用作直接还原铁矿石生产的化学试剂 DRI。 在不增加焦炉厂和高炉的能力，粗钢质量不变的情况下，DRI将用于提高粗钢产量的高炉，或者如果维持生产率，则化石燃料的特定消耗量显着降低 。 根据本发明的初级化石能源的利用也降低了每吨粗钢的特定CO 2排放量。 在常规的综合磨机中，特定CO 2排放量为每吨粗钢约1.6吨CO 2。
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3.发明申请公开(公告)号：US20090211401A1
公开(公告)日：2009-08-27
申请号：US12160180
申请日：2007-01-05
IPC分类号： C22B5/14
CPC分类号： C22B5/12 , C21B13/0073 , C21B13/02 , C21B13/029 , C21B2100/22 , C21B2100/64 , Y02P10/122 , Y02P10/126 , Y02P10/128 , Y02P10/136 , Y02P10/143
摘要： A process for reducing iron ore particles in a moving bed reduction reactor comprising an upper reduction zone and a lower discharge zone, wherein the coke oven gas, preferably forming all the make-up for the reducing gas circulating through and reacting in said reduction zone, is first fed to said discharge (cooling) zone and thereafter said coke oven gas, conditioned by the DRI in the lower zone, is withdrawn from the reactor and fed preferably into the recycled reducing gas for injection into the reduction zone of the reactor. Heavy hydrocarbons and other components of coke oven gas which may otherwise cause fouling, corrosion, or deposits in the direct reduction plant are removed from coke oven gas by catalytic and/or adsorptive action of the DRI present in said lower zone, before being externally transferred to the reduction zone of the reduction reactor.
摘要翻译： 一种用于还原移动床还原反应器中的铁矿石颗粒的方法，其包括上部还原区和下部排出区，其中焦炉气体优选地形成循环通过并在所述还原区中反应的还原气体的所有补充， 首先进料到所述排出（冷却）区，然后将由下部区域中的DRI调节的所述焦炉气体从反应器中排出并优选进料到再循环的还原气体中，以将其注入到反应器的还原区中。 在外部转移之前，可能通过在所述下部区域中存在的DRI的催化和/或吸附作用从焦炉气体中除去可能导致直接还原装置中的结垢，腐蚀或沉积的焦炉气体的重质烃和其它组分 到还原反应器的还原区。
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