The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2008
Filed:
Jul. 21, 2005
Albert R. Shuki, Sagamore Hills, OH (US);
Kenneth P. Keckler, Naperville, IL (US);
Thomas L. Bowman, League City, TX (US);
Thomas L. Szabo, Aurora, IL (US);
Albert R. Shuki, Sagamore Hills, OH (US);
Kenneth P. Keckler, Naperville, IL (US);
Thomas L. Bowman, League City, TX (US);
Thomas L. Szabo, Aurora, IL (US);
Ineos USA LLC, Lisle, IL (US);
Abstract
A process for the recovery of unreacted ammonia from the effluent from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate in at least two stages, thereby capturing the ammonia component of the effluent. The captured ammonia may be recovered by heating the aqueous ammonium phosphate, which then may be recycled. Contaminants present in the aqueous ammonium phosphate may be removed, for example by solvent extraction or wet oxidation, prior to recycle.