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    3.
    发明专利
    未知

    公开(公告)号：BR0208674A

    公开(公告)日：2004-08-03

    申请号：BR0208674

    申请日：2002-04-08

    Applicant: BASF AG

    Inventor： BUSCHULTE THOMAS ,  DIEHL VOLKER ,  HAGEN BERND ,  HUTH VOLKER ,  KASTEN WOLFGANG ,  SCHLEMMER PETER ,  SCHROTH AXEL

    IPC: B01J8/00 ,  B01J8/04 ,  B01J19/00 ,  C07B61/00 ,  C07C45/33 ,  C07C45/34 ,  C07C45/35 ,  C07C51/215 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  G01N21/3504 ,  C07C21/215 ,  C07C57/08 ,  C07C57/10 ,  G01N21/35 ,  C07C47/22

    Abstract: alpha,beta-ethylenically unsaturated aldehydes and/or carboxylic acids are prepared by means of a two-stage catalytic gas-phase oxidation in which a gas mixture comprising at least an alkane or alkene having from three to six carbon atoms and oxygen is subjected to a catalytic oxidation reaction, in the first stage ( 1 ). oxygen is added to the gases produced in the first stage ( 1 ) and the resulting mixture is introduced into the second stage ( 2 ) in which it is subjected to a further catalytic oxidation reaction. In the process of the present invention, a signal which correlates with the oxygen content of the reaction gases before and/or after the addition of oxygen between the first and second stages ( 1, 2 ) is generated and the oxygen addition is regulated as a function of the signal. Also provided are an apparatus for regulating a process for preparing alpha,beta-ethylenically unsaturated aldehydes and/or carboxylic acids and an apparatus for preparing these substances using the regulating apparatus of the present invention.

    4.
    发明专利
    未知

    公开(公告)号：CZ20032737A3

    公开(公告)日：2004-05-12

    申请号：CZ20032737

    申请日：2002-04-08

    Applicant: BASF AG

    Inventor： BUSCHULTE THOMAS ,  DIEHL VOLKER ,  HAGEN BERND ,  HUTH VOLKER ,  KASTEN WOLFGANG ,  SCHLEMMER PETER ,  SCHROTH AXEL

    IPC: B01J8/00 ,  B01J8/04 ,  B01J19/00 ,  C07B61/00 ,  C07C45/33 ,  C07C45/34 ,  C07C45/35 ,  C07C51/215 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  G01N21/3504 ,  C07C57/08 ,  C07C57/10

    Abstract: alpha,beta-ethylenically unsaturated aldehydes and/or carboxylic acids are prepared by means of a two-stage catalytic gas-phase oxidation in which a gas mixture comprising at least an alkane or alkene having from three to six carbon atoms and oxygen is subjected to a catalytic oxidation reaction, in the first stage ( 1 ). oxygen is added to the gases produced in the first stage ( 1 ) and the resulting mixture is introduced into the second stage ( 2 ) in which it is subjected to a further catalytic oxidation reaction. In the process of the present invention, a signal which correlates with the oxygen content of the reaction gases before and/or after the addition of oxygen between the first and second stages ( 1, 2 ) is generated and the oxygen addition is regulated as a function of the signal. Also provided are an apparatus for regulating a process for preparing alpha,beta-ethylenically unsaturated aldehydes and/or carboxylic acids and an apparatus for preparing these substances using the regulating apparatus of the present invention.

    5.
    发明专利
    未知

    公开(公告)号：DE10117678A1

    公开(公告)日：2002-10-10

    申请号：DE10117678

    申请日：2001-04-09

    Applicant: BASF AG

    Inventor： BUSCHULTE THOMAS ,  DIEHL VOLKER ,  HAGEN BERND ,  HUTH VOLKER ,  KASTEN WOLFGANG ,  SCHLEMMER PETER ,  SCHROTH AXEL

    IPC: B01J8/00 ,  B01J8/04 ,  B01J19/00 ,  C07B61/00 ,  C07C45/33 ,  C07C45/34 ,  C07C45/35 ,  C07C51/215 ,  C07C51/235 ,  C07C51/25 ,  C07C57/05 ,  C07C57/055 ,  G01N21/3504 ,  B01J4/00

    Abstract: The invention relates to a method for producing alpha , beta -ethylenically unsaturated aldehydes and/or carboxylic acids by two-step catalytic gas phase oxidation which is characterized in that in the first step (1) a gas mixture containing at least alkane or alkene having three to six carbon atoms and oxygen is subjected to a catalytic oxidation reaction. Oxygen is supplied to the gases produced in the first step (1) and the resulting mixture is added to the second step (2) in which it is subjected to another catalytic oxidation reaction. The inventive method is further characterized in that a signal is obtained that is correlated with the oxygen content of the reaction gases before and/or after addition of oxygen between the first and second step (1, 2) and in that the oxygen supply is controlled on the basis of said signal. The invention further relates to a device for controlling a method for producing alpha , beta -ethylenically unsaturated aldehydes and/or carboxylic acids and to a device for producing said substances using the inventive control device.

    Method for monitoring and ensuring the safety of exothermic reactions
    8.
    发明专利
    Method for monitoring and ensuring the safety of exothermic reactions 未知

    公开(公告)号：AU2003274682B2

    公开(公告)日：2008-10-02

    申请号：AU2003274682

    申请日：2003-06-06

    Applicant: BASF AG

    Inventor： KRONER HUBERTUS ,  NIEKEN ULRICH ,  BENTHACK CHRISTINA ,  HAUFF THOMAS ,  WATZDORF JOBST RUDIGER VON ,  KESSLER JOCHEN ,  SCHLEMMER PETER

    IPC: B01J19/00 ,  B01J19/18 ,  C08F2/22 ,  G05B23/02

    Abstract: In a process to convert emulsified polymers to polymers in an exothermic reaction, educts form a product in the presence of a passing gas. The initial reactor temperature and pressure especially are monitored and logged. The energy balance is then used to calculate the quantity of educt and product. The maximum pressure variation is calculated by monitoring the step-by-step reaction of the remaining educt quantities. The passing-gas pressure is calculated from the maximum pressure variation and the initial gas pressure. The maximum pressure variation is calculated by sub-dividing the quantities of educt and product present into quantities (n, followed by the calculation the change in reactor temperature against the quantities of residual educt and product following a known change in residual educt in an exothermal reaction. Further claimed is a process to monitor and regulate the operation of a blow-down boiler in which the product of the exothermal reaction is held in intermediate storage. The blow-down boiler is monitored online and regulated on the basis of a separate pressure calculation.

    9.
    发明专利
    未知

    公开(公告)号：BR0311430A

    公开(公告)日：2005-03-22

    申请号：BR0311430

    申请日：2003-06-06

    Applicant: BASF AG

    Inventor： NIEKEN ULRICH ,  WATZDORF JOBST RUDIGER VON ,  KESSLER JOCHEN ,  BENTHACK CHRISTINA ,  KRONER HUBERTUS ,  HAUFF THOMAS ,  SCHLEMMER PETER

    IPC: B01J19/00 ,  B01J19/18 ,  C08F2/22 ,  G05B23/02

    Abstract: In a process to convert emulsified polymers to polymers in an exothermic reaction, educts form a product in the presence of a passing gas. The initial reactor temperature and pressure especially are monitored and logged. The energy balance is then used to calculate the quantity of educt and product. The maximum pressure variation is calculated by monitoring the step-by-step reaction of the remaining educt quantities. The passing-gas pressure is calculated from the maximum pressure variation and the initial gas pressure. The maximum pressure variation is calculated by sub-dividing the quantities of educt and product present into quantities (n, followed by the calculation the change in reactor temperature against the quantities of residual educt and product following a known change in residual educt in an exothermal reaction. Further claimed is a process to monitor and regulate the operation of a blow-down boiler in which the product of the exothermal reaction is held in intermediate storage. The blow-down boiler is monitored online and regulated on the basis of a separate pressure calculation.

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