Desalination method with mercury refrigerant

Details Desalination method with mercury refrigerant Desalination method with mercury refrigerant

1977-11-23

1979-08-21

Yudkoff, Norman

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

62533, 62123, B01D 904

Patent

active

041648544

ABSTRACT:
A salt water purification apparatus and process utilizes a vertically arranged elongated tank in which salt water is first frozen into a solid block and then melted to provide pure water. The freezing is accomplished by injecting into a column of salt water within the tank, a finely atomized spray of precooled mercury to absorb heat from the water and to initiate the formation of ice crystals in the ice column. The mercury is continuously recirculated through a cooling means and the ice crystals accumulate in the upper portion of the tank due to their inherent buoyancy when they form a solid block of ice. A heat exchanger positioned in the upper portion of the tank thaws the upper portion of the ice block by indirect heat exchange with the incoming salt water feed. The block is moved upwardly in the tank due to hydraulic pressure created below the block by the salt water feed. Fresh water can therefore, be continuously or intermittently withdrawn from the upper portion of the tank and concentrated brine and precipitated salts withdrawn from the lower portion of the tank.

REFERENCES:
patent: 1905185 (1933-04-01), Morris
patent: 2666304 (1954-01-01), Ahrel
patent: 3069864 (1962-12-01), Crosby
patent: 3233420 (1966-02-01), Vesper
patent: 3367123 (1968-02-01), Schambra

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