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公开(公告)号：US3887388A
公开(公告)日：1975-06-03
申请号：US37537273
申请日：1973-07-02
申请人： SMIDTH & CO AS F L
CPC分类号： C04B7/60 , B01D53/68 , F27B7/2025
摘要： Improvements relating to cement manufacture wherein a unique method and a plant for practicing the method are disclosed for removing at least a portion of gaseous compounds containing alkalis, chlorine or sulphur from the exit gases of a rotary kiln in which cement raw meal is burnt to cement clinker with a view to subsequent cement manufacture. The method comprises the steps of dividing the hot exit gases from the rotary kiln into a main gas flow and a separate divisional flow and directing the main flow through a suspension preheater for preheating cement raw meal prior to feeding the raw meal into the kiln. A plurality of individual relatively cool solid condensation bodies are directed to pass through the divisional flow under the influence of gravity to permit the alkalis, chlorine or sulphur to condense on the surface of the bodies and the condensed compounds are removed from the bodies for redirecting them into the separate divisional flow. Prior to redirecting the bodies into the divisional flow they may be advantageously cooled to thereby permit lowering of the temperature of the gas flow. A plant is disclosed for practicing the method.
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公开(公告)号：US3864075A
公开(公告)日：1975-02-04
申请号：US46496474
申请日：1974-04-29
申请人： SMIDTH & CO AS F L
CPC分类号： F27B7/205 , F27B7/2025
摘要： A plant is disclosed for burning granular or pulverous material, particularly in the form of cement raw materials to be burnt to cement clinker. A preheater comprises at least two cooperating units, each with its own heating gas or air inlet and outlet and raw material inlet. A kiln to which preheated raw material is fed from the preheater has associated cooling means for cooling material burnt in the kiln. Heated cooling air leaving the cooling means is divided such that a part is led as combustion air to the kiln and a part is led to the air inlet of one preheater unit, the gas inlet of the other preheater unit being connected to an exhaust gas outlet from the kiln, and each unit each having at or near its gas or air outlet, its own means for controlling the air or gas flow through that unit and hence the division of the heated cooling air.
摘要翻译： 公开了一种用于燃烧颗粒或粉末材料的设备，特别是以水泥原料的形式被烧焦到水泥熟料。 预热器包括至少两个配合单元，每个配合单元具有其自己的加热气体或空气入口和出口以及原料入口。 从预热器供给预热的原料的窑具有用于在窑中燃烧的冷却材料的冷却装置。 离开冷却装置的加热冷却空气被分割成一部分作为燃烧空气被引导到窑，一部分被引导到一个预热器单元的空气入口，另一个预热器单元的气体入口连接到废气出口 并且每个单元各自具有在其气体或空气出口处或附近，其自身的装置用于控制通过该单元的空气或气体流，并因此控制加热的冷却空气的分配。
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