Patent ID: 6254734
Filing Date: 2001-07-03
Classification: B01D,C02F,F28D,F28F,Y02W,Y10S

Abstract:
In a barometric evaporation process for flash-down evaporation of a warmed liquid by reducing the pressure thereon and generating vapor while reducing the temperature of said liquid, the improvement comprising:(a) Flowing said liquid through a multiplicity of orifices in parallel array at a selected point within a flash-down channel for flow throught said channel;(b) said orifices having a diameter adjustment for controlling a pressure drop on said liquid initiating said flash-down of said liquid to produce two-phase flow consisting of vapor from said liquid and residual liquid;(c) imposing a pressure gradient on said two-phase flow within said channel and causing further of said flash-down evaporation of said residual liquid while raising said residual liquid to a higher elevation;(d) separating said residual liquid and said vapor adjacent to an outlet end of said channel, and condensing said separated vapor to produce distillate of said vapor;(e) and wherein said raising of said residual liquid to said higher elevation provides an elevation sufficient for the discharge of said residual liquid from reduced pressure to a higher pressure without a pump but by gravity induced flow of said separated residual liquid.