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    2.
    发明专利
    未知

    公开(公告)号：DE3834065A1

    公开(公告)日：1990-04-12

    申请号：DE3834065

    申请日：1988-10-06

    Applicant: UNION CARBIDE CORP

    Inventor： DOUMAUX JUN ARTHUR ROY ,  NELSON JAMES RUSSELL

    IPC: C07C201/16 ,  C07C67/00 ,  C07C201/00 ,  C07C201/04 ,  C07C203/00 ,  C07C203/02 ,  C07C203/04

    Abstract: A process is provided for removing impurities from the gaseous product of an alkyl nitrite production zone by contacting a portion of it with lower alcohol and oxygen to convert substantially all of the nitric oxide in that portion of the gaseous product stream to alkyl nitrite, the oxygen being present in an amount such that the mole ratio of nitric oxide to oxygen is in the range of about 4:1 to about 2:1 and the lower alcohol being present in the reaction zone such that the mole ratio of nitric oxide to lower alcohol is about 1:1 or less. A recovery stream, comprising alkyl nitrite substantially free of nitric oxide, is withdrawn from the reaction zone and at least a portion of the alkyl produced in the reaction zone is removed. A least a portion of the balance of the recovery stream from which the alkyl nitrite has been removed is purged, thereby removing impurities from the process.

    PROCESS AND REACTION VESSEL FOR PRODUCTION OF ALKYL NITRITE
    3.
    发明专利
    PROCESS AND REACTION VESSEL FOR PRODUCTION OF ALKYL NITRITE 未知

    公开(公告)号：ZA887288B

    公开(公告)日：1989-06-28

    申请号：ZA887288

    申请日：1988-09-28

    Applicant: UNION CARBIDE CORP

    Inventor： NELSON JAMES RUSSELL ,  JAMES RUSSELL NELSON

    IPC: C07C201/02 ,  B01D3/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/04 ,  C07C203/00 ,  C07C203/02 ,  C07C203/04 ,  C01B ,  B01D

    Abstract: A process and reaction vessel for producing alkyl nitrite is disclosed, the process comprising (a) contacting nitric oxide ¸& lower alcohol and oxygen in a reaction zone such that alkyl nitrite is formed, said reaction zone comprising a reactor section and a rectification section, (b) supplying a liquid scrubbing agent to an upper portion of the rectification section, (c) withdrawing a gaseous alkyl nitrite product stream from the upper portion of the rectification section, and (d) withdrawing a liquid stream from a lower portion of the reactor section. The reactor section provides intimate vapor-liquid contact sufficient to enhance the conversion of nitric oxide to alkyl nitrite and the rectification section provides sufficient vapor residence time to enhance conversion of oxygen, as well as sufficient rectification capabilities to reduce the amounts of water and nitric acid in the gaseous alkyl nitrite product stream.

    8.
    发明专利
    未知

    公开(公告)号：DE3887806T2

    公开(公告)日：1994-05-19

    申请号：DE3887806

    申请日：1988-09-28

    Applicant: UNION CARBIDE CORP

    Inventor： NELSON JAMES RUSSELL

    IPC: C07C201/02 ,  B01D3/00 ,  C07C67/00 ,  C07C201/00 ,  C07C201/04 ,  C07C203/00 ,  C07C203/02 ,  C07C203/04

    Abstract: A process and reaction vessel for producing alkyl nitrite is disclosed, the process comprising (a) contacting nitric oxide ¸& lower alcohol and oxygen in a reaction zone such that alkyl nitrite is formed, said reaction zone comprising a reactor section and a rectification section, (b) supplying a liquid scrubbing agent to an upper portion of the rectification section, (c) withdrawing a gaseous alkyl nitrite product stream from the upper portion of the rectification section, and (d) withdrawing a liquid stream from a lower portion of the reactor section. The reactor section provides intimate vapor-liquid contact sufficient to enhance the conversion of nitric oxide to alkyl nitrite and the rectification section provides sufficient vapor residence time to enhance conversion of oxygen, as well as sufficient rectification capabilities to reduce the amounts of water and nitric acid in the gaseous alkyl nitrite product stream.

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