Vacuum dewatering of desiccant brines
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United States of America Patent
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Aug 25, 1998
Grant Date -
N/A
app pub date -
Nov 27, 1996
filing date -
May 30, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Desiccant brine is heated and diluted in an air drier by coming into contact with air to be cooled in an evaporative cooler but is regenerated by dewatering in a vacuum chamber, from which it is discharged first into a sump, and then back into the vacuum chamber. Both the desiccant brine and air are heated in the air drier and the hot brine when in the vacuum chamber has a temperature above atmospheric, which provides a higher vapor pressure and its water is readily vaporized. The higher efficiency reduces the amount of heat input required, and thereby reduces the extent of heat exchanger requirement.
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