| 摘要 |
PURPOSE: To provided a multiple effective flash evaporator device and individual effective evaporators used for it. CONSTITUTION: Evaporator elements 23 of dimpled surface plates mounted so that they extend horizontally are provided to each evaporator step, each step forms a circular cross-section vessel 17 using I-beams horizontally extended at the approximately horizontal diameter position of the vessel 17 and supporting the dimpled surface plates. A condensate collection trough 28 is mounted below the dimpled surface plates and at the I-beams, the I-beams having openings in them through which condensate collected by the trough 28 passes from one end of the vessel 17 to the other. The hot liquid to be evaporated e.g. brine is passed into a bottom chamber 24 of each stage of the vessel 17, with vapor flowing upwardly through demisters 27 and channels, coming into contact with the dimpled plates, and the condensate falling as a thin film down the plates and collecting in the condensate trough 28 below.
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