Distillation: processes – separatory – Water purification only – Under pressure or vacuum
Patent
1997-04-01
1999-07-20
Manoharan, Virginia
Distillation: processes, separatory
Water purification only
Under pressure or vacuum
60648, 60653, 60676, 159 21, 159 171, 159 241, 159DIG8, 202160, 202174, 202176, 203 2, 203 22, 203 23, 203 24, 203 27, 203 71, 203 88, 203DIG8, 203DIG9, 203DIG20, 203DIG17, B01D 306, C02F 106, F01K 1700
Patent
active
059252235
ABSTRACT:
A process and apparatus for improving the thermal efficiency of a steam turbine power generating plant while simultaneously desalinating seawater or brine and purifying water which contains minerals, salts, and other dissolved solids. Exhaust gases from a power plant is heat exchanged against water in a secondary ecomomizer which circulates water at a temperature near, or slightly above the dewpoint of the combustion exhaust of the high-pressure boiler. The heated water is flashed to produce low-pressure steam. The low-pressure steam is condensed against the last effect of a multi-effect desalinization unit. Steam from the first effect of the desalination unit is condensed against steam condensate from the power plant turbine to preheat the condensate and thereby recover heat from the power plant's exhaust gas. Salinous water is fed to the multi-effect desalinization unit to produce fresh water and a concentrated brine. The low-pressure steam is used to replace high-pressure steam that is used for preheating and deareation of feedwater for the boiler.
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Lin Karl
Simpson Gary D.
Manoharan Virginia
Robby Kenneth A.
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