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    IMPROVED RECOVERY PROCESS FOR ACRYLONITRILE
    1.
    发明专利
    IMPROVED RECOVERY PROCESS FOR ACRYLONITRILE 失效

    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.

    2.
    发明专利
    未知

    公开(公告)号：BR9503515A

    公开(公告)日：1996-06-04

    申请号：BR9503515

    申请日：1995-08-01

    Applicant: STANDARD OIL CO OHIO

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

    IPC: B01J8/24 ,  B01J12/02 ,  C01C3/02 ,  C07C253/24 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08 ,  C01C1/10

    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.

    METHOD FOR ACRYLONITRILE REGENERATION
    4.
    发明专利
    METHOD FOR ACRYLONITRILE REGENERATION 未知

    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

    6.
    发明专利
    未知

    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.

    8.
    发明专利
    未知

    公开(公告)号：ES2144100T3

    公开(公告)日：2000-06-01

    申请号：ES95304532

    申请日：1995-06-27

    Applicant: STANDARD OIL CO OHIO

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

    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.

    METHOD FOR ACRYLONITRILE REGENERATION
    10.
    发明专利
    METHOD FOR ACRYLONITRILE REGENERATION 未知

    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

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