Method for feeding hot gas to a shaft furnace
    1.
    发明授权
    Method for feeding hot gas to a shaft furnace 有权
    将热气送入立式炉的方法

    公开(公告)号:US08550811B2

    公开(公告)日:2013-10-08

    申请号:US13257116

    申请日:2010-03-15

    IPC分类号: F23N1/02

    摘要: The present invention proposes a method for feeding hot gas to a shaft furnace (12), wherein the method comprises feeding a first portion (32) of a first gas flow (24) to a mixing chamber (36) and feeding a second portion (34) of the first gas flow (24) into said shaft furnace. The method further comprises feeding a second gas flow (28) to the mixing chamber (36), allowing the first portion (32) of the first gas flow (24) to mix with the second gas flow (28) in the mixing chamber (36), thereby forming a third gas flow (38), and feeding the third gas flow (38) to the shaft furnace (12). The first gas flow (24) has a first volumetric fluid flow rate (V1), a first temperature (T1) and a first pressure (p1); the second gas flow (28) has a second volumetric fluid flow rate (V2), a second temperature (T2) and a second pressure (p2); and the third gas flow (38) has a third volumetric fluid flow rate (V3), a third temperature (T3) and a third pressure (p3). According to an important aspect of the present invention, the first temperature (T1) is higher than the second temperature (T2) and the first pressure (p1) is lower than the second pressure (p2) and the third temperature (T3) is regulated by controlling the second pressure (p2).

    摘要翻译: 本发明提出了一种向竖炉(12)供给热气体的方法,其中所述方法包括将第一气流(24)的第一部分(32)输送到混合室(36)并将第二部分 34)进入所述竖炉中。 该方法还包括将第二气流(28)输送到混合室(36),允许第一气流(24)的第一部分(32)与混合室中的第二气流(28)混合 36),从而形成第三气流(38),并将第三气流(38)输送到竖炉(12)。 第一气流(24)具有第一体积流体流速(V1),第一温度(T1)和第一压力(p1); 第二气流(28)具有第二体积流体流速(V2),第二温度(T2)和第二压力(p2); 并且第三气流(38)具有第三体积流体流速(V3),第三温度(T3)和第三压力(p3)。 根据本发明的重要方面,第一温度(T1)高于第二温度(T2),第一压力(p1)低于第二压力(p2),第三温度(T3)被调节 通过控制第二压力(p2)。

    METHOD FOR HEATING A BLAST FURNACE STOVE
    2.
    发明申请
    METHOD FOR HEATING A BLAST FURNACE STOVE 审中-公开
    加热火炉炉的方法

    公开(公告)号:US20120214115A1

    公开(公告)日:2012-08-23

    申请号:US13031941

    申请日:2011-02-22

    IPC分类号: C21B9/14 F23G7/06 C21B9/02

    摘要: A method for heating a blast furnace stove by combusting in a stable, visible flame a fuel with a lower heating value (LHV) of 9 MJ/Nm3 or less in a combustion region, arranged in a combustion chamber in the stove, and causing the combustion gases to flow through and thereby heat refractory material in the stove, wherein the fuel is combusted with an oxidant comprising at least 85% oxygen, and combustion gases are caused to be recirculated into the combustion zone and thereby dilute the mixture of fuel and oxidant therein sufficiently for the flame not to damage the refactory material.

    摘要翻译: 一种用于通过在稳定的可见火焰中燃烧在燃烧区域内具有低于9MJ / Nm3或更小的发热值(LHV)为9MJ / Nm3或更小的燃料的燃烧室中的炉子加热炉的方法, 燃烧气体流过并由此加热炉中的耐火材料,其中燃料与包含至少85%氧气的氧化剂燃烧,并且使燃烧气体再循环进入燃烧区域,从而稀释燃料和氧化剂的混合物 其中充分地使火焰不会损坏该重构材料。

    Air separation
    5.
    发明授权
    Air separation 失效
    空气分离

    公开(公告)号:US5295351A

    公开(公告)日:1994-03-22

    申请号:US43430

    申请日:1993-04-06

    申请人: Thomas Rathbone

    发明人: Thomas Rathbone

    摘要: In a process integration, particularly with a blast furnace, low grade fuel gas produced by the furnace is compressed and moisturized. The moisturized fuel is burnt using a major part of a compressed air stream to support its combustion. The resulting combustion gases are then expanded with the generation of power. The minor part of the air is separated into oxygen and nitrogen. Oxygen is used in the blast furnace.

    摘要翻译: 在过程集成中,特别是与高炉相比,由炉产生的低等级燃料气体被压缩和保湿。 使用主要部分的压缩空气流来燃烧保湿的燃料以支持其燃烧。 随后产生的燃烧气体被扩大。 空气的小部分被分离成氧和氮。 氧气用于高炉。