公开(公告)号：US4160692A

公开(公告)日：1979-07-10

申请号：US817003

申请日：1977-07-18

申请人： James Mitchell ,  Thomas N. Pye

发明人： James Mitchell ,  Thomas N. Pye

IPC分类号： B01D1/22

CPC分类号： B01D1/225 ,  Y10S159/15

摘要： A thin wiped-film evaporator comprises an upright cylindrical vessel with a vertical rotor shaft extending concentrically within the vessel. An inlet pipe supplies liquid to be evaporated to a distributor which spreads the liquid around the inner wall of the vessel, and a series of wiper assemblies carried by the rotor shaft below the distributor serve for the creation of a thin liquid film on the vessel's inner wall, heating means being provided to evaporate the liquid film. The evaporator includes a vapor inlet and a liquid discharge.To enable the evaporator to handle corrosive liquids or products, the internal surface of the vessel is corrosion resistant as are the other parts within the evaporator. In particular, the vessel's inner wall and the rotor shaft are glass (or enamel) lined and additionally at least part of each wiper assembly can be glassed: the other internal parts can be of fluorocarbon. This arrangement enables the evaporator to satisfactorily handle high temperature materials, and is also conducive to greater purity and longer evaporator life. Each wiper assembly includes an axial series of radial finger elements pivotally carried by a spindle: such an assembly satisfactorily caters for out-of-roundness and straightness irregularities in the vessel.

摘要翻译： 薄的薄膜蒸发器包括直立圆柱形容器，其具有同心地延伸在容器内的垂直转子轴。 入口管将待蒸发的液体供应到分布器，分配器将液体围绕容器的内壁扩散，并且由分配器下方的转子轴承载的一系列擦拭器组件用于在容器的内部形成薄的液体膜 壁，提供加热装置以蒸发液膜。 蒸发器包括蒸汽入口和液体排放。