Barometric evaporation process and evaporator
OwnerHugo H Sephtoninventor
Life of this patent
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Abstract
A process for the evaporation of an available warm or hot liquid under a vacuum by applying a pressure drop thereon initiating flash-down evaporation, and followed by further flash-down evaporation under an applied pressure gradient whereby the residual liquid is raised by the vapor produced to an elevation sufficient for subsequently discharging the residual liquid from vacuum without a pump; and by separating the vapor phase from the residual liquid phase before condensing the vapor produced into distilled liquid.
Claims7
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.
In a barometric evaporation process for flash-down evaporation of warmer saline water by reducing the pressure thereon and generating vapor while reducing the temperature of said saline water, the improvement comprising:
- (a) Flowing said saline water through a multiplicity of orifices in parallel array into an inlet end of a flash-down channel;
- (b) said orifices imposing a pressure drop on said saline water initiating said flash-down of said saline water to produce two-phase flow consisting of vapor from said saline water and residual saline water;
- (c) imposing a pressure gradient on said two-phase flow within said channel and causing further flash-down evaporation of said residual saline water while raising said residual saline water to a higher elevation by vapor lift;
- (d) separating said residual saline water from said vapor adjacent to an outlet end of said channel, and
- (e) condensing said vapor to produce distillate from said vapor;
- (f) and wherein said raising of said residual saline water provides for the discharge of said separated residual saline water from said reduced pressure to a higher pressure without a pump but under gravity induced flow reducing pumping cost.
Dependencies are inferred from the claim text.