发明名称 Helical duct gas/meal separator
摘要 A helical duct separator particularly suited for use in the suspension preheater of a cement calcining plant to separate raw cement meal from kiln-off gases in which the meal is suspended comprises a hollow elongated continuous duct having its longitudinal axis disposed along a downwardly inclined helical path, an inlet opening in a vertical plane for receiving a horizontal stream of gas with entrained meal, a downwardly inclined upper wall and a concave outer sidewall in the path of the gas stream to deflect the gas stream into a downwardly inclined helical path, a horizontal bottom wall adjacent the outlet end of the duct, a meal exit opening in the bottom wall and a gas exhaust opening in a horizontal plane in the upper wall adjacent the outlet end of the duct. The gas stream so directed in a downwardly inclined helical path impinges on the horizontal bottom wall and is deflected upward and drawn upward by suction from an induced draft fan toward the gas exhaust opening while the heavier meal is precipitated from the gas stream and urged by centrifugal and inertial forces to flow along the bottom wall and through the meal exit opening. The helical duct separator is substantially shorter in height, and has a substantially lower pressure drop, than a cyclone separator, thereby permitting reduction in the height of, and the energy required to operate, a suspension preheater in comparison to one of the cyclone separator type.
申请公布号 US4318692(A) 申请公布日期 1982.03.09
申请号 US19810222034 申请日期 1981.01.02
申请人 ALLIS-CHALMERS CORPORATION 发明人 HESS, PAUL D.
分类号 F27B7/20;(IPC1-7):F27B15/00;F27B7/02 主分类号 F27B7/20
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