公开(公告)号：JPH11199559A

公开(公告)日：1999-07-27

申请号：JP26552498

申请日：1998-09-18

Applicant: STANDARD OIL CO OHIO

Inventor： SOCKELL EDWARD J ,  SARNA JOSEPH C ,  KERR ALI ,  GODBOLE SANJAY P

IPC: C07C253/24 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: PROBLEM TO BE SOLVED: To improve HCN recovery rate in the production of acrylonitrile. SOLUTION: This production process of (meth)acrylonitrile comprises the step of transferring a discharged material obtained in the ammoxidation of propylene, etc., to a quenching column, and cooling the hot exhaust gas with a water fume, the step of passing the cooled reaction discharged material to an absorption column from an overhead to absorb a crude acrylonitrile or methacrylonitrile with water, and the step of passing the obtained vapor flow containing HCN through a product cooling device and then a knockout pot, and also comprises bringing the cooled HCN product in contact with a water flow as an improved point.

公开(公告)号：BR9803782A

公开(公告)日：1999-12-14

申请号：BR9803782

申请日：1998-09-14

Applicant: STANDARD OIL CO OHIO

Inventor： SOCKELL EDWARD J ,  KERR ALI ,  SARNA JOSEPH C ,  GODBOLE SANJA Y P

IPC: C07C253/24 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: A process for the enhanced recovery of hydrogen cyanide (HCN) obtained from the reactor effluent of an ammoxidation reaction of propylene or isobutylene comprising passing the reactor effluent through a quench column, an absorber column, a first distillation column, a second distillation column, a cooler and a knock-out pot, wherein the improvement comprises contacting the vapor phase containing hydrogen cyanide with an aqueous stream.

公开(公告)号：AT375066B

公开(公告)日：1984-06-25

申请号：AT582

申请日：1982-01-04

Applicant: STANDARD OIL CO OHIO

Inventor： SOCKELL EDWARD J ,  PRESSON ROBERT DEAN ,  WU HSIN-CHIH

IPC: C07C5/00 ,  B01D3/36 ,  C07C253/34 ,  C07C121/18

Abstract: A continuous process for recovering highly pure acetonitrile from crude acetonitrile containing acetonitrile, water, HCN and heavy organics, said process comprising:… (1) distilling said crude acetonitrile in a first distillation zone at a first pressure at or above 1 atmosphere to remove HCN therefrom and produce a first acetonitrile/water azeotrope and a first bottoms product containing water,… (2) distilling said first azeotrope in a second distillation zone at a second pressure less than 1 atmosphere to separate said first azeotrope into a second bottoms product containing water and a second acetonitrile/water azeotrope having a greater acetonitrile concentration than said first azeotrope, and… (3) distilling said second acetonitrile/water azeotrope in a third distillation zone at a third pressure above 1 atmosphere to produce a third acetonitrile/water azeotrope containing substantially all of the water in said second azeotrope, third bottoms product comprising acetonitrile and heavy organics and a sidestream comprising said highly pure acetonitrile. … This process enables one to obtain acetonitrile in 99+% purity. It is based upon a continuous distillation process carried out in three stages at three different pressures.

公开(公告)号：ATA582A

公开(公告)日：1983-11-15

申请号：AT582

申请日：1982-01-04

Applicant: STANDARD OIL CO OHIO

Inventor： SOCKELL EDWARD J ,  PRESSON ROBERT DEAN ,  WU HSIN-CHIH

IPC: C07C5/00 ,  B01D3/36 ,  C07C253/34 ,  C07C121/18

Abstract: A continuous process for recovering highly pure acetonitrile from crude acetonitrile containing acetonitrile, water, HCN and heavy organics, said process comprising:… (1) distilling said crude acetonitrile in a first distillation zone at a first pressure at or above 1 atmosphere to remove HCN therefrom and produce a first acetonitrile/water azeotrope and a first bottoms product containing water,… (2) distilling said first azeotrope in a second distillation zone at a second pressure less than 1 atmosphere to separate said first azeotrope into a second bottoms product containing water and a second acetonitrile/water azeotrope having a greater acetonitrile concentration than said first azeotrope, and… (3) distilling said second acetonitrile/water azeotrope in a third distillation zone at a third pressure above 1 atmosphere to produce a third acetonitrile/water azeotrope containing substantially all of the water in said second azeotrope, third bottoms product comprising acetonitrile and heavy organics and a sidestream comprising said highly pure acetonitrile. … This process enables one to obtain acetonitrile in 99+% purity. It is based upon a continuous distillation process carried out in three stages at three different pressures.

公开(公告)号：DE69414660D1

公开(公告)日：1998-12-24

申请号：DE69414660

申请日：1994-02-04

Applicant: STANDARD OIL CO OHIO

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

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.

公开(公告)号：MX158763A

公开(公告)日：1989-03-13

申请号：MX19083982

申请日：1982-01-04

Applicant: STANDARD OIL CO OHIO

Inventor： PRESSONH ROBERT DEAN ,  WU SINCHIH ,  SOCKELL EDWARD J

IPC: C07C5/00 ,  B01D3/36 ,  C07C253/34 ,  C07C121/18

Abstract: A continuous process for recovering highly pure acetonitrile from crude acetonitrile containing acetonitrile, water, HCN and heavy organics, said process comprising:… (1) distilling said crude acetonitrile in a first distillation zone at a first pressure at or above 1 atmosphere to remove HCN therefrom and produce a first acetonitrile/water azeotrope and a first bottoms product containing water,… (2) distilling said first azeotrope in a second distillation zone at a second pressure less than 1 atmosphere to separate said first azeotrope into a second bottoms product containing water and a second acetonitrile/water azeotrope having a greater acetonitrile concentration than said first azeotrope, and… (3) distilling said second acetonitrile/water azeotrope in a third distillation zone at a third pressure above 1 atmosphere to produce a third acetonitrile/water azeotrope containing substantially all of the water in said second azeotrope, third bottoms product comprising acetonitrile and heavy organics and a sidestream comprising said highly pure acetonitrile. … This process enables one to obtain acetonitrile in 99+% purity. It is based upon a continuous distillation process carried out in three stages at three different pressures.

公开(公告)号：DE69414660T2

公开(公告)日：1999-04-08

申请号：DE69414660

申请日：1994-02-04

Applicant: STANDARD OIL CO OHIO

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

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.

公开(公告)号：BR9304451A

公开(公告)日：1995-06-27

申请号：BR9304451

申请日：1993-11-01

Applicant: STANDARD OIL CO OHIO

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

IPC: C01C3/02 ,  C07C120/14

公开(公告)号：BR9400642A

公开(公告)日：1995-03-28

申请号：BR9400642

申请日：1994-02-22

Applicant: STANDARD OIL CO OHIO

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

IPC: B01J23/88 ,  B01D53/58 ,  C01C3/02 ,  C07B61/00 ,  C07C5/08 ,  C07C253/24 ,  C07C253/26 ,  C07C253/32 ,  C07C255/00 ,  C07C255/08 ,  C07C253/34

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.

公开(公告)号：DE3168979D1

公开(公告)日：1985-03-28

申请号：DE3168979

申请日：1981-12-23

Applicant: STANDARD OIL CO OHIO

Inventor： PRESSON ROBERT DEAN ,  WU HSIN-CHIH ,  SOCKELL EDWARD J

IPC: C07C5/00 ,  B01D3/36 ,  C07C253/34 ,  C07C120/00 ,  C07C121/18

Abstract: A continuous process for recovering highly pure acetonitrile from crude acetonitrile containing acetonitrile, water, HCN and heavy organics, said process comprising:… (1) distilling said crude acetonitrile in a first distillation zone at a first pressure at or above 1 atmosphere to remove HCN therefrom and produce a first acetonitrile/water azeotrope and a first bottoms product containing water,… (2) distilling said first azeotrope in a second distillation zone at a second pressure less than 1 atmosphere to separate said first azeotrope into a second bottoms product containing water and a second acetonitrile/water azeotrope having a greater acetonitrile concentration than said first azeotrope, and… (3) distilling said second acetonitrile/water azeotrope in a third distillation zone at a third pressure above 1 atmosphere to produce a third acetonitrile/water azeotrope containing substantially all of the water in said second azeotrope, third bottoms product comprising acetonitrile and heavy organics and a sidestream comprising said highly pure acetonitrile. … This process enables one to obtain acetonitrile in 99+% purity. It is based upon a continuous distillation process carried out in three stages at three different pressures.