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：IN160761B

公开(公告)日：1987-08-01

申请号：IN500DE1985

申请日：1985-06-26

Applicant: STANDARD OIL CO OHIO

Inventor： PRESSON ROBERT DEAN ,  WU HSIN-CHIN ,  SOCKELL EDWARD JOSEPH

IPC: C07C121/18

公开(公告)号：IN159808B

公开(公告)日：1987-06-06

申请号：IN802DE1981

申请日：1981-12-23

Applicant: STANDARD OIL CO OHIO

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

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：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.

公开(公告)号：RO83616B

公开(公告)日：1984-08-30

申请号：RO10621281

申请日：1981-12-30

Applicant: STANDARD OIL CO

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

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

Abstract: Procedeul pentru recuperarea continua a acetonitrilului brut, conform inventiei, provenit din reactia de amoxidare catalitica a propilenei, continînd apa, acid cianhidric, substante grele, consta în aceea ca (1) se supune distilarii, într-o prima zona, la o presiune de aproximativ 1,12...7 kgf/cm2, pentru îndepartarea HCN si obtinerea unui prim azeotrop acetonitril-apa si un prim produs de blaz continînd apa, dupa care, (2) se supune azeotropul obtinut la o a doua zona de distilare, la o presiune de 0,2...0,3 kgf/cm2, pentru a separa un produs de blaz continînd apa si un al doilea azotrop cu un continut de acetonitril mai mare decît în primul azeotrop si apoi (3) distilerea celui de-al doilea azeotrop într-o a treia zona de distilare, la o presiune de 2,80...3,85 kgf/cm2, obtinîndu-se al treilea azeotrop continînd toata cantitatea de apa si din a doua zona de distilare si al treilea produs de blaz continînd acetonitril pur, care se recupereaza printr-un curent lateral, produsul de blaz recirculîndu-se în cea de a doua zona de distilare.

公开(公告)号：BR8108531A

公开(公告)日：1982-10-19

申请号：BR8108531

申请日：1981-12-30

Applicant: STANDARD OIL CO

Inventor： PRESSON ROBERT DEAN ,  HSIN CHIH WU ,  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：AU1692370A

公开(公告)日：1972-01-06

申请号：AU1692370

申请日：1970-06-29

Applicant: STANDARD OIL CO

Inventor： DOMINIK JURGEN GERT ,  PRESSON ROBERT DEAN ,  WYSOCKI CARL GEORGE

IPC: B01J23/88 ,  B01J27/192 ,  B01J

Abstract: 1313191 Iron-containing bismuth phosphomolybdate catalysts STANDARD OIL CO 17 June 1970 [24 Sept 1969] 29366/70 Heading B1E Iron-containing carrier-supported bismuth phosphomolybdate catalyst is prepared by a process which comprises the sequential steps of comminuting carrier-supported bismuth phosphomolybdate material with sufficient water to form a paste, adding an aqueous solution of ammonium heptamolybdate to the paste to form a slurry, adding the slurry to a dispersion of silica in water acidified with phosphoric acid, -dispersing an iron salt in acid solution in the resulting slurry to form a homogeneous mixture, drying the mixture and calcining the resulting dried product at a temperature below the inactivation temperature of the resulting iron-containing catalyst. As exemplified, comminuting is effected by ball-milling, the iron salt used is ferric nitrate nonahydrate acidified with nitric acid, drying is effected by spray drying to form a microspheroidal product and calcining is effected at a temperature of 1260‹F. The carrier-supported bismuth phosphomolybdate material may be fresh, used, spent or depleted catalyst which is intended for use, or has been used, in the annoxidation of an α,#-monoolefin, for example propylene or isobutylene, to the corresponding unsaturated nitrile, for example acrylonitrile or methacrylonitrile.