Distillation: processes – separatory – Water purification only
Patent
1977-01-31
1978-03-14
Hart, Charles N.
Distillation: processes, separatory
Water purification only
203 49, 203DIG1, 203DIG20, 202185R, 202234, 126271, 60641, 60648, 60677, B01D 300, B01D 306
Patent
active
040789756
ABSTRACT:
A process for recovering potable water from a source of salinous water -- e.g. sea and/or ocean water. Certain modifications afford the simultaneous generation of power. A portion of salinous water and an air stream are introduced into a solar radiation heat sink, with the air stream flowing over the salinous water. Heated, water-containing air is withdrawn from the heat sink and reduced in temperature to recover potable water. The heated salinous water, from the heat sink, may be recycled thereto, or at least in part introduced into a flash separation zone, maintained at a subatmospheric pressure to provide a non-salinous vaporous phase which is passed through a turbine, from the resulting motion of which power is generated. The exiting turbine vapors are cooled and/or condensed via indirect contact with a second portion of salinous water to recover additional potable water. Alternatively, the heated, water-containing air stream may be cooled by vaporizing a hydrocarbon which then passes through a turbine for the purpose of producing energy. Salinous water which is returned to the original source thereof is at a temperature not more than 15 .degree. F. greater than the coldest salinous water obtained from the source.
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Erickson Robert W.
Hart Charles N.
Hoatson Jr. James R.
Page II William H.
Therkorn Ernest G.
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