Method for desalinating water

Distillation: processes – separatory – With measuring – testing or inspecting – Of temperature or pressure

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203 11, 203 22, 203 49, 203 90, 203DIG1, 203DIG25, 202176, 202177, 202180, 202205, 202234, 202236, C02F 114

Patent

active

043436838

ABSTRACT:
An apparatus and method for removing contaminants from water having solid contaminants dissolved therein. Contaminated water flows across a grid and into a storage tank. The grid utilizes solar energy to heat that water to a predetermined temperature. A heat transfer structure which is dome-shaped and receives water from the storage tank and a preheater means utilizing solar energy heats the water to a further predetermined temperature. An evaporator means receives the heated water and exposes it to a vacuum condition so that the temperature of the water is above the saturation temperature. The water is thus vaporized, and solid contaminants dissolved therein are separated therefrom. The solids are deposited on a plurality of moving belts and are then moved into a solids removal system. The solids removal system comprises a plurality of trap door pairs upon which the solids are deposited and which are sequentially opened so that the vacuum conditions existing in the evaporator are not disturbed. Vapor transferring means removes the water vapor from the evaporator and transfers it to the heat transfer structure wherein it is condensed to form distillate which is free of solid contaminants. Distillate removal means then removes the distillate from the heat transfer structure to collection or usage means.

REFERENCES:
patent: 2490659 (1949-12-01), Snyder
patent: 2975107 (1961-03-01), Friedman
patent: 3163587 (1964-12-01), Champe
patent: 3190816 (1965-06-01), Ademac
patent: 3206380 (1965-09-01), Daviau
patent: 3248306 (1966-04-01), Cummings
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patent: 3257291 (1966-06-01), Gerber
patent: 3338797 (1967-08-01), Hermansen
patent: 3351537 (1967-11-01), Peterson
patent: 3522151 (1970-07-01), Dismore
patent: 3879266 (1975-04-01), Sorensen
patent: 3970525 (1976-07-01), Kurek

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