公开(公告)号：RO113344B1

公开(公告)日：1998-06-30

申请号：RO9501414

申请日：1995-08-01

Applicant: STANDARD OIL CO OHIO

Inventor： VINCENT G REILLING ,  JEFFREY E RINKER ,  TIMOTHY R MCDONEL ,  JOSEPH C SARNA

IPC: B01J8/24 ,  B01J12/02 ,  C01C3/02 ,  C07C253/24 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: Redn. in the amt. of unreacted ammonia exiting the reactor in acrylonitrile mfr., comprises: (a) contacting with a fluid bed catalyst, in the lower portion of a fluid bed reactor, ammonia, O2 and a hydrocarbon comprising propylene or propane, to produce acrylonitrile; (b) feeding O2 free of any oxygenate cpds. into the upper portion of the fluid bed reactor, at a point where the additional O2 does not affect the reaction, but reacts with at least some of the unreacted ammonia; (c) cooling the reactor effluent contg. acrylonitrile by feeding into a water quench column; (d) removing unwanted impurities; and (e) recovering acrylonitrile from the quench column.

公开(公告)号：RO113343B1

公开(公告)日：1998-06-30

申请号：RO9400257

申请日：1994-02-21

Applicant: STANDARD OIL CO OHIO

Inventor： WILFRID G SHAW ,  KENNETH L BIGLER ,  LOUIS R TROTT ,  STEVE J MIKO ,  VINCENT G REILLING ,  MICHAEL J SEELY ,  DEV D SURESH ,  MARIA S FRIEDRICH ,  PAUL E BOTT ,  EDWARD J SOCKELL ,  ALBERT R SHUKI JR ,  KECKLER P KENNETH ,  FRANK J KOCJANCIC ,  STEVEN J ROWE

IPC: B01D53/58 ,  C01C3/02 ,  B01J23/88 ,  C07B61/00 ,  C07C5/08 ,  C07C253/24 ,  C07C253/26 ,  C07C253/32 ,  C07C255/00 ,  C07C255/08

Abstract: A process for the substantial reduction 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.