Methods for the evaporation of an aqueous solution containing ammonia
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United States of America Patent
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Oct 28, 2003
Grant Date -
N/A
app pub date -
May 21, 2002
filing date -
Aug 11, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method including evaporating aqueous solutions containing ammonia, adding an acid to the evaporated vapor flow to form an ammonium salt, and condensing the vapor flow to form a liquid containing the salt. By this method the ammonia formed into a salt is not present as an inert gas layer which would impede condensation on the condenser surfaces.
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