Air injection for nitrogen oxide reduction and improved product quality
    1.
    发明授权
    Air injection for nitrogen oxide reduction and improved product quality 有权
    空气注入用于减少氮氧化物并提高产品质量

    公开(公告)号:US06474984B2

    公开(公告)日:2002-11-05

    申请号:US09918269

    申请日:2001-07-30

    IPC分类号: F27B720

    摘要: A calcining system is operated in a substoichiometric mode for reducing nitrogen oxide generation and removing sulfur from materials to be processed by creating an oxygen deficient atmosphere. The calcining system includes a rotary kiln rotating on a slightly inclined horizontal axis. The rotary kiln has a feed end introducing material to be processed and a discharge end. A preheating/precalcining device is positioned adjacent the feed end such that the material passes through the device prior to entering the rotary kiln. A stationary hood surrounds the discharge end. A burner is supported by the stationary hood. The burner introduces combustible fuel and combustion air into the rotary kiln through the discharge end and operates in a substoichiometric mode. At least one air nozzle is located along the length of the rotary kiln. The air nozzle injects combustion air into the rotary kiln. The combustion air introduced by the air nozzle completely combusts the combustible fuel introduced by the burner before the combustible fuel exits the feed end.

    摘要翻译: 煅烧系统以亚化学计量模式运行,用于通过产生缺氧气氛来减少氮氧化物产生并从要处理的材料中除去硫。 煅烧系统包括在稍微倾斜的水平轴上旋转的回转窑。 回转窑具有待加工的进料端引入材料和排出端。 预热/预分解装置位于进料端附近,使得材料在进入回转窑之前通过装置。 固定罩围绕放电端。 燃烧器由固定罩支撑。 燃烧器通过排放端将可燃燃料和燃烧空气引入回转窑,并以亚化学计量模式运行。 沿着回转窑的长度设置至少一个空气喷嘴。 空气喷嘴将燃烧空气注入回转窑。 在可燃燃料离开进料端之前,由空气喷嘴引入的燃烧空气完全燃烧由燃烧器引入的可燃燃料。

    Preheating apparatus
    2.
    发明授权
    Preheating apparatus 失效
    预热装置

    公开(公告)号:US4337031A

    公开(公告)日:1982-06-29

    申请号:US230730

    申请日:1981-02-02

    CPC分类号: F27B7/2016

    摘要: An apparatus for preheating particulate material in which the particulate material is transferred from an upper storage bin to a lower annular flow passage by a plurality of connecting chutes and the particulate material is preheated in the annular flow passage by hot kiln gases flowing in countercurrent heat exchange relationship with the particulate material and, in addition, by hot kiln gases introduced into the annular flow passage from the lower regions of radially extending ducts.

    摘要翻译: 一种用于预热颗粒材料的装置,其中颗粒材料通过多个连接滑槽从上部储存箱转移到下部环形流动通道,并且颗粒材料在环形流动通道中通过逆流热交换流动的热窑气体预热 与颗粒材料的关系,此外,还可以通过从径向延伸的管道的下部区域引入环形流动通道的热窑气体。

    Apparatus for cooling particulate material
    4.
    发明授权
    Apparatus for cooling particulate material 失效
    用于冷却颗粒材料的装置

    公开(公告)号:US4076493A

    公开(公告)日:1978-02-28

    申请号:US721673

    申请日:1976-09-09

    CPC分类号: F27D15/0206

    摘要: Apparatus for cooling calcined or sintered particulate material discharged from a rotary kiln or other pyro-processing system. The apparatus includes an upright shell adapted to contain the material to be cooled, a mixing hopper arranged within the upper portion of the shell for mixing together particles of the material of different size and air distributing means arranged within the lower portion of the shell for releasing cooling air into the material. The apparatus is configured so that the cooling air moves counter to the direction of material flow.

    摘要翻译: 用于冷却从回转窑或其它热处理系统排出的煅烧或烧结颗粒材料的装置。 该装置包括适于容纳要冷却的材料的竖立壳体,设置在壳体上部的混合料斗,用于将不同尺寸的材料的颗粒和布置在壳体的下部内的空气分配装置混合在一起,用于释放 冷却空气进入材料。 该装置构造成使得冷却空气相对于材料流动的方向移动。