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    • 6. 发明申请
    • METHOD AND INSTALLATION FOR PRODUCING DIRECT REDUCED IRON
    • 生产直接还原铁的方法和安装
    • US20120031236A1
    • 2012-02-09
    • US13262796
    • 2010-04-06
    • Jean-Luc RothDavid Rodriguez
    • Jean-Luc RothDavid Rodriguez
    • C21B13/02F27B1/10F27D17/00
    • C21B13/02C21B2100/22C21B2100/42C21B2100/64C21B2100/66C21B2200/00Y02P10/136Y02P10/212
    • “A method for producing direct reduced iron in a vertical reactor having an upper reducing zone and a lower cooling zone, the method including: feeding iron oxide feed material to an upper portion of the vertical reactor, the iron oxide feed material forming a burden flowing by gravity to a material outlet portion in a lower portion of the vertical reactor; feeding hot reducing gas to a lower portion of the reducing zone of the vertical reactor, the hot reducing gas flowing in a counter flow to the burden towards a gas outlet port in the upper portion of the vertical reactor; recovering direct reduced iron at the lower portion of the vertical reactor; recovering top gas at the upper portion of the vertical reactor; submitting at least a portion of the recovered top gas to a recycling process; and feeding the recycled top gas back into the vertical reactor, where the recycling process includes heating the recovered top gas in a preheating unit before feeding it to a reformer unit; feeding volatile carbon containing material to the reformer unit and allowing the volatile carbon containing material to devolatise and to react with the recovered top gas; feeding desulfurizing agent into the recovered top gas in or upstream of the reformer unit; heating the reformer unit; and feeding the reformed top gas recovered from the reformer unit through a particle separation device for removal of sulfur containing material.”
    • “在具有上部还原区和下部冷却区的立式反应器中生产直接还原铁的方法,该方法包括:将铁氧化物进料输送到垂直反应器的上部,氧化铁原料形成流动的负荷 通过重力引导到垂直反应器的下部的材料出口部分; 将热还原气体供给到垂直反应器的还原区域的下部,热还原气体逆流流向垂直反应器上部的气体出口的负荷; 在垂直反应器的下部回收直接还原铁; 在垂直反应器的上部回收顶部气体; 将回收的顶部气体的至少一部分提交到再循环过程; 并将再循环的顶部气体送回到垂直反应器中,其中回收过程包括在将其送入重整器单元之前将预热单元中回收的顶部气体加热; 将含挥发性碳的材料供给重整单元,并使含挥发性碳的材料脱挥发和与回收的顶部气体反应; 将脱硫剂进料到重整器单元内或上游的回收顶部气体中; 加热重整单元; 并通过用于除去含硫物质的颗粒分离装置将从重整单元回收的重整顶部气体进料。