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    Process for producing direct reduced iron (DRI) utilizing gases derived from coal
    78.
    发明授权
    Process for producing direct reduced iron (DRI) utilizing gases derived from coal 有权
    使用来自煤的气体生产直接还原铁（DRI）的方法

    公开(公告)号：US09546409B2

    公开(公告)日：2017-01-17

    申请号：US14240013

    申请日：2011-08-20

    申请人： Eugenio Zendejas-Martinez

    发明人： Eugenio Zendejas-Martinez

    IPC分类号： C21B13/00 ,  C21B13/02 ,  C10K1/00 ,  C22B1/11 ,  C21B11/02 ,  C22B3/02

    CPC分类号： C22B1/11 ,  C10K1/004 ,  C21B11/02 ,  C21B13/0033 ,  C21B13/0073 ,  C21B13/02 ,  C21B2100/02 ,  C21B2100/04 ,  C22B3/02 ,  Y02P10/122 ,  Y02P10/126 ,  Y02P10/128 ,  Y02P10/136

    摘要： A process for producing DRI from iron ores, utilizing a gas produced from fossil fuels, containing sulfur compounds and BTX, heating said gas in a heater, preferably a regenerator, wherein heat is transferred from a previously-heated solid material to the gas. Flowing the hot gas through a bed of DRI particles, iron oxides or other equivalent material, outside of the reduction reactor, where said material adsorbs sulfur compounds and destroys BTX. The resulting gas, free from sulfur compounds and BTX, is combined with a reducing gas stream from the reduction reactor after H2O and CO2 is at least partially removed for regenerating its reducing potential, with or without undergoing previous cleaning, is used for producing DRI. One inventive embodiment comprises producing DRI at high temperature giving advantageously higher productivity and energy savings when using hot DRI in an electric arc furnace lowering the capital and operational costs of steelmaking.

    摘要翻译： 利用由化石燃料产生的含有硫化合物和BTX的铁矿石从铁矿石生产DRI的方法，在加热器，优选再生器中加热所述气体，其中热量从预先加热的固体材料转移到气体中。 将热气体流过还原反应器外部的DRI颗粒，氧化铁或其他等效材料床，其中所述材料吸附硫化合物并破坏BTX。 在H 2 O和CO 2至少部分除去以后再生其还原电位，在或不经历之前的清洁的情况下，将所得到的气体，不含硫化合物和BTX与来自还原反应器的还原气流合并用于生产DRI。 一个创新实施例包括在高温下生产DRI，当在电弧炉中使用热DRI以降低炼钢的资本和操作成本时，可有利地提高生产率和节能。

    SHAFT FURNACE AND METHOD OF OPERATING SAME
    79.
    发明申请
    SHAFT FURNACE AND METHOD OF OPERATING SAME 有权
    旋转炉及其操作方法

    公开(公告)号：US20150176095A1

    公开(公告)日：2015-06-25

    申请号：US14282585

    申请日：2014-05-20

    申请人： Grede LLC

    发明人： Bill Connors ,  Kipp Witters

    IPC分类号： C21B5/00 ,  F27B1/28 ,  F27B1/16 ,  C21B7/16 ,  C21B7/00

    CPC分类号： C21B5/001 ,  C21B5/006 ,  C21B7/16 ,  C21B11/02 ,  C21B13/023 ,  C21B2005/005 ,  F27B1/16 ,  F27B1/28 ,  Y02P10/143

    摘要： A method of operating a shaft furnace includes inserting a mixture including anthracite coal and coke into a cavity defined by the furnace, and disposing a metal feedstock within the cavity. The method includes injecting natural gas at a natural gas flow rate and a first quantity of oxygen gas at a first oxygen gas flow rate into the cavity simultaneously through at least one burner. The method also includes driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate. The method also includes combusting the mixture within the cavity to produce a stack gas, melting the metal feedstock to produce a melted metal material, and monitoring the stack gas to thereby operate the shaft furnace. A shaft furnace is also disclosed.

    摘要翻译： 操作竖炉的方法包括将包含无烟煤和焦炭的混合物插入由炉限定的空腔中，并将金属原料设置在空腔内。 该方法包括通过至少一个燃烧器将天然气流量的天然气和第一氧气流量的第一量氧气注入到空腔中。 该方法还包括通过至少一个喷枪将超声波氧气流量的第二量氧气驱动到空腔中，其中超音速氧气流量大于第一氧气流量。 该方法还包括将空气中的混合物燃烧以产生堆叠气体，熔化金属原料以产生熔融金属材料，并监测堆叠气体从而操作竖炉。 还公开了一种竖炉。