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    MINIMIZATION OF WASTE MATERIAL AND PRODUCT RECOVERING PROCESS
    1.
    发明专利
    MINIMIZATION OF WASTE MATERIAL AND PRODUCT RECOVERING PROCESS 失效

    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.

    2.
    发明专利
    未知

    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.

    3.
    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.

    5.
    发明专利
    未知

    公开(公告)号：TR199801855A2

    公开(公告)日：1999-06-21

    申请号：TR9801855

    申请日：1998-09-18

    Applicant: STANDARD OIL CO

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

    IPC: C07C253/26 ,  C07C253/24 ,  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.

    8.
    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.

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