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:
Apr. 20, 1999
Filed:
Oct. 17, 1997
Applicant:
Inventors:
James Frank Brazdil, Jr, Highland Heights, OH (US);
Kenneth Paul Keckler, Lima, OH (US);
Richard Paul Hauser, Ravenna, OH (US);
Assignee:
The Standard Oil Company, Cleveland, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01C / ; C07C / ;
U.S. Cl.
CPC ...
423238 ; 558319 ;
Abstract
A process for the recovery of unreacted ammonia from the reactor effluent obtained from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate wherein the ratio of ammonium ions to phosphate ions in the solution is between about 0.7 to about 1.3, preferably between about 0.9 to 1.2.