Method and system for anhydrous ammonia recovery
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United States of America Patent
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Dec 15, 2015
Grant Date -
Jun 12, 2014
app pub date -
Nov 20, 2013
filing date -
Nov 20, 2012
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Abstract
An apparatus for recycling exhaust gas includes a vessel containing a reversible ammonia sorber material which is exothermic when sorbing (“loading”) ammonia and which is endothermic when releasing (“unloading”) ammonia. A first valve selectively couples a source of exhaust gas including ammonia to a first port of the vessel, a second valve selectively couples a vacuum pump to the vessel, and a third valve selectively coupling a second port of the vessel to an output. A controller opens and closes the first valve, the second valve and the third valve to implement a loading phase, an intermediate venting phase and an unloading phase for the vessel.
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