Patent ID: 9211493
Filing Date: 2015-12-15
Classification: B01D,B01J,C01C

Abstract:
1. A method for recovering ammonia from exhaust gas comprising: loading a vessel, during a loading phase of not less than 1 minute and not more than forty minutes, with an input gas containing ammonia via a vessel inlet proximate to a first portion of the vessel, wherein the vessel contains a reversible ammonia adsorber material; venting the vessel via a venting outlet, under a vacuum condition, during an intermediate venting phase after the loading phase, wherein the intermediate venting phase has a duration defined by at least one of a time threshold, a vapor pressure threshold and an N unloading the vessel via an unloading outlet, under a vacuum condition, during an unloading phase after the intermediate venting phase, whereby ammonia is recovered from exhaust gas.