公开(公告)号：JPH107639A

公开(公告)日：1998-01-13

申请号：JP1299397

申请日：1997-01-27

Applicant: STANDARD OIL CO OHIO

Inventor： GIBSON JAMES S ,  RINKER JEFFREY E ,  WACHTENDORF PAUL T ,  GODBOLE SANJAY P

IPC: C07B63/00 ,  C07C5/08 ,  C07C253/26 ,  C07C253/32 ,  C07C253/34 ,  C07C255/03 ,  C07C255/08

Abstract: PROBLEM TO BE SOLVED: To obtain the subject high-quality compound in a short time by cooling an effluent gas of an ammoxidation reactor by a quenching column, absorbing a product in water by an absorbing column, separating the absorbed substance into a water and an organic layers and collecting the product from the organic layer. SOLUTION: A reactor effluent obtained by the ammoxidation of propylene or isobutylene is transferred to a quenching column and a hot effluent gas is cooled by bringing it into contact with mist. The cooled reactor effluent overhead is passed through a conduit 1 to the bottom of an absorbing column 5 to absorb crude acrylonitrile or methacrylonitrile in water introduced through a conduit 3. Then the solution is sent through a first distillation column 13 to a first decanter 19 to form a first water layer and a first organic layer containing acrylonitrile or methacrylonitrile. The first organic layer is transferred a second distillation column 27 to a second decanter 33 to form a second water layer and a second organic layer to recover the objective compound from the second organic layer.

公开(公告)号：BG63535B1

公开(公告)日：2002-04-30

申请号：BG10173797

申请日：1997-07-03

Applicant: STANDARD OIL CO

Inventor： WACHTENDORF PAUL T ,  RINKER JEFFREY E ,  GOLDBOLE SANJAY P

IPC: C07C253/34 ,  C07C255/08

Abstract: The method for the acrylonitrile or methacrylonitrile regenration produced from the reactor flow in the amoxidation of propylene or isobutylene includes admission of the reactor flow across an absorption, regeneration and desorption column. The maximum pressure in the regeneration column is increased mechanically by about 0.00018 to 0.035 mPa in order to improve the hydraulic capacity of the regenration and desorption column. 8 claims

公开(公告)号：BG101737A

公开(公告)日：1999-04-30

申请号：BG10173797

申请日：1997-07-03

Applicant: STANDARD OIL CO OHIO

Inventor： WACHTENDORF PAUL T ,  RINKER JEFFREY E ,  GOLDBOLE SANJAY P

IPC: C07C253/34 ,  C07C255/08

Abstract: The method for the acrylonitrile or methacrylonitrileregenration produced from the reactor flow in the amoxidation ofpropylene or isobutylene includes admission of the reactor flowacross an absorption, regeneration and desorption column. Themaximum pressure in the regeneration column is increasedmechanically by about 0.00018 to 0.035 mPa in order to improve thehydraulic capacity of the regenration and desorption column.8 claims

公开(公告)号：BG101172A

公开(公告)日：1998-01-30

申请号：BG10117297

申请日：1997-01-27

Applicant: STANDARD OIL CO

Inventor： GIBSON JAMES S ,  WACHTENDORF PAUL T ,  RINKER JEFFREY E ,  GODBOLE SANJAY P

IPC: C07B63/00 ,  C07C5/08 ,  C07C253/26 ,  C07C253/32 ,  C07C253/34 ,  C07C255/03 ,  C07C255/08

Abstract: The method of acrylonitrile or methacrylonitrile recyclingproduced from the reactor flow of the reaction of aminooxidationsof propylene or isobutylene consists in the admission in thereactor flow through absorption column of a first decanter,recycling column, second decanter and stripping column. The innertenperature of the first and second decanters is maintainedbetween 0°C and 23.9°C.

公开(公告)号：TR200200974T2

公开(公告)日：2002-08-21

申请号：TR200200974

申请日：1999-10-12

Applicant: STANDARD OIL CO

Inventor： RINKER JEFFREY E ,  WACHTENDORF PAUL T ,  III VINCENT A LITTLE ,  GODBOLE SANJAY P

IPC: C07C253/26 ,  C07B61/00 ,  C07C55/08 ,  C07C253/34 ,  C07C255/08

Abstract: A process for manufacturing acrylonitrile comprising reacting propylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing crude acrylonitrile, transferring the reactor effluent containing crude acrylonitrile to a quench column wherein the reactor effluent containing crude acrylonitrile is contacted with an aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the crude acrylonitrile to an absorption column wherein the reactor effluent containing crude acrylonitrile is contacted with a second aqueous stream to separate and remove the crude acrylonitrile as a bottom stream from the absorption column, transferring the bottom stream containing the crude acrylonitrile to a recovery and purification section where the acrylonitrile is recovered and purified, wherein the improvement comprises supplying the second aqueous stream to the absorption column by means of liquid spray nozzles.

公开(公告)号：BG62927B1

公开(公告)日：2000-11-30

申请号：BG10117297

申请日：1997-01-27

Applicant: STANDARD OIL CO

Inventor： GIBSON JAMES S ,  WACHTENDORF PAUL T ,  RINKER JEFFREY E ,  GODBOLE SANJAY P

IPC: C07B63/00 ,  C07C5/08 ,  C07C253/26 ,  C07C253/32 ,  C07C253/34 ,  C07C255/03 ,  C07C255/08

Abstract: The method of acrylonitrile or methacrylonitrile recycling produced from the reactor flow of the reaction of aminooxidations of propylene or isobutylene consists in the admission in the reactor flow through absorption column of a first decanter, recycling column, second decanter and stripping column. The inner tenperature of the first and second decanters is maintained between 0 deg.C and 23.9 deg.C. 7 claims, 1 figure