Patent ID: 8303921
Filing Date: 2012-11-06
Classification: B01D,C01C,C07C,C07D

Abstract:
1. A process of producing an ammonium salt composition, comprising the steps of: (a) providing a process stream comprising sulfuric acid and at least one tertiary amine or a precursor thereof; (b) contacting the process stream with ammonia under conditions effective to form a waste stream comprising water, the tertiary amine, and ammonia and a product stream comprising a first amount of ammonium salt; (c) deriving from the waste stream an off gas stream comprising a preliminary amount of ammonia; and (d) contacting at least a portion of the off gas stream with an acid under conditions effective to form an ammonium salt stream comprising a second amount of ammonium salt and a purge stream comprising a reduced amount of ammonia.