Method for reducing the concentration of sulfur compounds in a system
for calcining fine grained materials
    1.
    发明授权
    Method for reducing the concentration of sulfur compounds in a system for calcining fine grained materials 失效
    降低煅烧细粒料的系统中硫化合物浓度的方法

    公开(公告)号:US4469664A

    公开(公告)日:1984-09-04

    申请号:US484980

    申请日:1983-04-04

    摘要: A method and apparatus for reducing the sulfur content and/or the SO.sub.2 emission in a system for calcining fine grained materials such as in the manufacture of cement utilizing a pre-calcining and a final calcining stage. The sulfur content of a process gas or of a material stream is determined and then is mixed with appropriate amounts of a dust or a raw meal in a reaction zone, the dust or raw meal containing sulfur bonding substances such as alkaline earth carbonates. The exhaust gas from which the sulfur compounds are removed by the sulfur bonding is separated from the sulfur containing solids and the exhaust gas and solids are removed from the calcining system.

    摘要翻译: 一种用于在用于煅烧细粒材料的系统中降低硫含量和/或SO 2排放的方法和装置,例如在使用预煅烧和最终煅烧阶段制造水泥时。 确定工艺气体或材料流的硫含量,然后在反应区域中混合适量的粉尘或生料,含有硫结合物质如碱土金属碳酸盐的粉末或生料。 通过硫键除去硫化合物的废气与含硫固体分离,排气和固体从煅烧系统中除去。

    Method and apparatus for the thermal treatment of moist, granular
materials
    2.
    发明授权
    Method and apparatus for the thermal treatment of moist, granular materials 失效
    用于热处理潮湿颗粒材料的方法和设备

    公开(公告)号:US4119396A

    公开(公告)日:1978-10-10

    申请号:US764446

    申请日:1977-01-31

    CPC分类号: F28C3/12 F27B7/2033

    摘要: Method and apparatus for the thermal treatment of moist, granular materials utilizing at least two superposed cyclone separators, with a relatively long gas conduit connecting the lower cyclone separator to the upper one. Charging means are provided in the conduit for introducing material to be treated near the lower cyclone separator, and a venturi-type constriction is provided in the conduit below the charging means, the constriction having its lower end projecting into the lower cyclone separator and serving to break up lumps of material which might otherwise be deposited in the cyclone separator and transfer the particulate material to the upper cyclone separator.

    摘要翻译: 使用至少两个重叠的旋风分离器热处理潮湿的颗粒材料的方法和装置,具有将下部旋风分离器连接到上部旋风分离器的较长的气体导管。 在导管中设置充电装置,用于引导下部旋风分离器附近的待处理材料,并且在充气装置下方的导管中设置文丘里型收缩部,收缩部的下端突出到下部旋风分离器中, 分解可能会沉积在旋风分离器中的材料块,并将颗粒材料转移到上旋风分离器。

    Apparatus for thermal treatment of moist raw material
    3.
    发明授权
    Apparatus for thermal treatment of moist raw material 失效
    潮湿原料热处理设备

    公开(公告)号:US3998583A

    公开(公告)日:1976-12-21

    申请号:US606194

    申请日:1975-08-20

    CPC分类号: F26B17/10 F26B21/02 F26B3/10

    摘要: Method and apparatus for the thermal treatment of moist raw pulverulent material, particularly slurries of raw cement material, wherein a plurality of gas and material separators are connected in series, the material to be treated is introduced between the last separator and the next-to-the-last separator and penetration of infiltrated air into the gas stream is prevented by a blower in advance of the zone of introduction of the raw material.The blower prevents a large pressure differential at the point of material supply and at the same time accommodates maintenance of a high vacuum and rate of flow of gas for the transporting of the material. The gas conduit leading to the last separator has an elongated riser so that the moist material introduced into the gas stream is maintained in contact with the hot gases for a long period to effect efficient pre-drying of the material.

    摘要翻译: 用于热处理潮湿的原料粉末材料,特别是原料水泥材料的浆料的方法和装置,其中多个气体和材料分离器串联连接,待处理材料被引入最后一个分离器和下一个分离器之间, 渗透空气在气流中的最后分离器和渗透通过鼓风机在原料引入区域之前被防止。