Urea granulation process with an acidic scrubbing system and the subsequent integration of ammonium salt into urea granules
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United States of America Patent
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Jun 18, 2013
Grant Date -
Sep 22, 2011
app pub date -
Nov 6, 2009
filing date -
Nov 28, 2008
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Abstract
A urea granulation process and the apparatus suitable for operating that process integrates a method for reducing ammonia emissions from a urea granulation plant which is emitted by a urea production process by scrubbing the off-gas and recovering the scrubber bleed and integrating it into the granulation process so that ammonium salts are completely contained by the process.
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