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:
Oct. 10, 1995
Filed:
Aug. 11, 1993
Wilfrid G Shaw, Lyndhurst, OH (US);
Kenneth L Bigler, Aurora, OH (US);
Louis R Trott, Solon, OH (US);
Steve J Miko, Hudson, OH (US);
Vincent G Reiling, Shaker Heights, OH (US);
Michael J Seely, Twinsburg, OH (US);
Dev D Suresh, Hudson, OH (US);
Maria S Friedrich, Lyndhurst, OH (US);
Paul E Bott, Victoria, TX (US);
Edward J Sockell, Port Lavaca, TX (US);
Albert R Shuki, Jr, Sagamore Hills, OH (US);
Kenneth P Keckler, Lima, OH (US);
Frank J Kocjancic, Independence, OH (US);
Steven J Rowe, Medina, OH (US);
The Standard Oil Company, Cleveland, OH (US);
Abstract
A process for the substantial or complete elimination of ammonium sulfate generated during the production of acrylonitrile by the direct ammoxidation of propylene/propane, ammonia and an oxygen containing gas (e.g. air) over a fluid bed catalyst wherein the improvement comprises introducing methanol into said reactor in the upper portion of the reactor at a location where the methanol reacts with at least a portion if not substantially all of the excess ammonia without affecting the acrylonitrile yield. Preferably, methanol is introduced into the reactor at below its coking temperature. In particular, when an oxygen lean fluid bed catalyst is utilized, an additional oxygen containing gas is introduced into the reaction at a distance between about 8 to 14 inches from the methanol feed location.