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    • 10. 发明申请
    • METHOD AND DEVICE FOR MIXING A FLOWING GAS AND A PULVERULENT MATERIAL
    • 用于混合流动气体和粉末材料的方法和装置
    • WO00038822A1
    • 2000-07-06
    • PCT/SE1999/002359
    • 1999-12-15
    • B01D53/10B01D53/14B01F3/06B01F5/00B01J8/18B01J19/24
    • B01J19/2405B01D53/10B01F5/0057B01F2003/061
    • A method for mixing a pulverulent material in a main gas flow with a view to achieving uniform distribution of the pulverulent material. The turbulence in the main gas flow is increased in a vortex-generating zone. The pulverulent material is introduced into the main gas flow, in a mixing zone, with a carrier gas flow whose net motion during introduction is essentially opposite to the main gas flow. The mixing zone is positioned downstream of the vortex-generating zone and in the vicinity thereof. The carrier gas flow with the pulverulent material is in a rotational zone given a helical motion, whose axis of symmetry is essentially parallel with the direction of flow of the main gas flow, and is introduced into the mixing zone in the form of a divergent hollow cone. A device for carrying out the method comprises a gas duct (1) for the main gas flow with vortex-generating means (4) and an introducing means (11) for introduction of pulverulent material in dispersed state into a carrier gas flow. The introducing means (11) comprises a cylindrical pipe (13) with an open and a closed end, a tangential inlet (17) in the vicinity of the closed end of the cylindrical pipe (13), and a divergent axial outlet (18) at the open end of the cylindrical pipe comprising a truncated conical jacket (14) and a centered insert (16) adjacent to the axial outlet so adapted that an annular opening (19) forms between the truncated conical jacket (14) and the insert (16).
    • 为了实现粉状材料的均匀分布,在主气流中混合粉状物质的方法。 主涡流中的湍流在涡流发生区增加。 粉状材料在混合区中与主气流一起引入,其中引入时的净运动基本上与主气流相反。 混合区位于涡流发生区的下游并在其附近。 具有粉状材料的载气流动呈旋转区域给予螺旋运动,其对称轴线基本上与主气流的流动方向平行,并且以分散空心的形式引入混合区域 锥体。 用于实施该方法的装置包括用于主气流的气体管道(1),其具有涡流发生装置(4)和用于将分散状态的粉状材料引入载气流的引入装置(11)。 引入装置(11)包括具有开口和封闭端的圆柱形管(13),在圆柱形管(13)的封闭端附近的切向入口(17)和发散的轴向出口(18) 在圆柱形管的开口端包括一个截头圆锥形夹套(14)和与轴向出口相邻的中心插入件(16),以便在截锥形夹套(14)和插入件(14)之间形成一个环形开口(19) 16)。