Distillation: processes – separatory – Water purification only
Patent
1993-11-05
1995-04-11
Manoharan, Virginia
Distillation: processes, separatory
Water purification only
60648, 159DIG39, 203 4, 203 7, 203DIG17, 203DIG20, 210687, 210673, B01D 334, C02F 104, C02F 142
Patent
active
054055032
ABSTRACT:
A process and apparatus for desalinating seawater or brine and purifying water which contains minerals, salts, and other dissolved solids while simultaneously generating power. The salinous water is heated in a boiler to form steam and a concentrated brine. The concentrated brine is removed from the boiler, the steam produced in the boiler is washed with fresh water to remove trace salts and inorganic materials, and water bearing trace salts and inorganic materials are returned to the boiler. The washed steam is expanded across a turbine to generate electrical or mechanical power which is utilized as a product. The steam exhausted from the turbine is collected and condensed, and one portion of the condensed water is utilized as a fresh water product and another portion of the condensed water is used as the wash water to wash the steam produced in the boiler. Energy efficiency is improved by heat exchanging the hot concentrated brine against the salinous feed water or by flashing the brine to produce steam. Boiler scaling and corrosion may be controlled by feed water pretreatment. By utilizing distillation combined with power generation, demand for fresh water and power can be satisfied simultaneously.
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patent: 4392959 (1983-07-01), Coillet
patent: 4770790 (1988-09-01), Oberhofer
Lin Karl
Simpson Gary D.
Manoharan Virginia
Roddy Kenneth A.
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