METHOD FOR LONG-TERM OPERATION OF A HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE TO OBTAIN ACROLEIN
    1.
    发明申请
    METHOD FOR LONG-TERM OPERATION OF A HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF PROPENE TO OBTAIN ACROLEIN 审中-公开
    方法长期运行丙烯到丙烯醛的非均相催化部分气相氧化

    公开(公告)号:WO2012049246A3

    公开(公告)日:2012-06-14

    申请号:PCT/EP2011067887

    申请日:2011-10-13

    CPC classification number: C07C45/35 C07C47/22

    Abstract: Disclosed is a method for long-term operation of a heterogeneously catalyzed partial gas phase oxidation of propene to obtain acrolein, in which the propene contained in the fed reaction gas mixture is partially oxidized when said gas mixture penetrates the fixed catalyst bed that is accommodated in two spatially successive temperature zones A, B, and in order to prevent the quality of the fixed catalyst bed from deteriorating during long-term operation, the temperature in at least one of the two temperature zones is raised in such a way that the difference TB- TA becomes greater and greater, where TB is the temperature in temperature zone B and TA is the temperature in temperature zone A.

    Abstract translation: 一种用于丙烯的非均相催化部分气相氧化成丙烯醛,其中部分氧化的通过固定催化剂床,其被容纳在两个空间上连续的温度区A,B传递时该气体混合物中,并且,在长期运转中所含的反应气体输入混合物的丙烯的长期操作方法,作为针对一个测量 减少在固定催化剂床的质量,两个温度区中的至少一个的温度提高,以使差TB TA变得越来越大,TB温度区B的温度,和TA是温度区中的温度。

    METHOD FOR PRODUCING A CATALYTICALLY ACTIVE MASS THAT IS A MIXTURE OF A MULTI-ELEMENT OXIDE CONTAINING THE ELEMENTS MO AND V AND AT LEAST ONE OXIDE OF MOLYBDENUM

    公开(公告)号:ZA201506507B

    公开(公告)日:2020-11-25

    申请号:ZA201506507

    申请日:2015-09-04

    Applicant: BASF SE

    Abstract: Preparing catalytically active composition including a mixture made of a multi element oxide comprising molybdenum and vanadium and at least one oxide of molybdenum, comprises e.g. obtaining a spray-dried powder by spray-drying the aqueous solution comprising multi element oxide or an aqueous suspension, (iii) uniformly mixing the spray-dried powder, at least one powdery oxide of molybdenum and optionally at least one forming agent to obtain a mixture and forming geometrical precursor bodies, and (iv) thermally treating the geometrical precursor bodies. Preparing a catalytically active composition including a mixture made of a multi element oxide comprising molybdenum and vanadium and at least one oxide of molybdenum, comprises (i) preparing an aqueous solution by sources of the elemental constituents of the multi element oxide or an aqueous suspension with the condition that each of the sources passes through the state of an aqueous solution during producing the aqueous suspension, (ii) obtaining a spray-dried powder by spray-drying the aqueous solution or the aqueous suspension, (iii) uniformly mixing the spray-dried powder, at least one powdery oxide of molybdenum and optionally at least one forming agent to obtain a mixture and forming geometrical precursor bodies, and (iv) thermally treating the geometrical precursor bodies. Independent claims are also included for: (1) a catalyst comprising a geometric shaped support body, the catalytically active composition obtained by the above mentioned method, which is applied on the outer surface of the geometric shaped support body, and optionally a binding agent; and (2) heterogeneously catalyzed partial gas phase oxidation of methacrolein to methacrylic acid, using at least one catalyst obtained by the above mentioned method.

    Oxidationskatalysator mit sattelförmigem Trägerformkörper

    公开(公告)号:DE102014203725A1

    公开(公告)日:2015-09-03

    申请号:DE102014203725

    申请日:2014-02-28

    Applicant: BASF SE

    Abstract: Die Erfindung betrifft einen Oxidationskatalysator, umfassend mindestens einen anorganischen oxidischen oder keramischen Trägerformkörper mit einer BET-Oberfläche von weniger als 0,5 m2/g, bezogen auf den Träger, der mindestens teilweise beschichtet ist mit einem katalytisch aktiven Multielementoxid, wobei der Katalysator edelmetallfrei ist und der Trägerformkörper die Form eines Sattels hat, dessen Sattelfläche in den beiden Hauptrichtungen entgegengesetzt gekrümmt ist, ein Verfahren zu seiner Herstellung, seine Verwendung in unterschiedlichen katalytischen Gasphasenoxidationen und entsprechende Verfahren zur katalytischen Gasphasenoxidation.

    DEVICE AND METHOD FOR SEPARATING LIQUID DROPLETS FROM A GAS STREAM BY MEANS OF A CENTRIFUGAL MIST ELIMINATOR

    公开(公告)号:ZA202310791B

    公开(公告)日:2025-02-26

    申请号:ZA202310791

    申请日:2023-11-22

    Applicant: BASF SE

    Abstract: The invention relates to a centrifugal mist eliminator for separating liquid droplets from a gas stream, comprising: - a shell (1), which has a circular cross-section and a vertical longitudinal axis (11); - a an upper hood (2), which delimits the shell (1) at the top and has a gas outlet connecting piece (7) for the gas stream purified in the centrifugal mist eliminator; - a drip plate (8), which is disposed below the gas outlet connecting piece (7); - a lower hood (10), which delimits the shell (1) at the bottom and which has a liquid outlet connecting piece (4) for discharging the separated liquid droplets; and - an inlet (3) for feeding the gas stream, the inlet leading tangentially into the shell (1); the centrifugal mist eliminator being characterized in that at least two nozzles (9) for feeding a stabilizer liquid into the interior of the centrifugal mist eliminator are provided, the nozzle outlet (15) of each nozzle being disposed between the tangential inlet (3) and the drip plate (8) in the vertical direction, and the main spray direction (12) of the nozzles (9) being directed upward at an interior angle of 0 to 60° to the vertical longitudinal axis (11). The invention also relates to a method for separating liquid droplets from a gas stream in a centrifugal mist eliminator of this type.

    processo para operação a longo prazo de uma oxidação de fase de gás parcial catalisada heterogeneamente de propeno a acroleína

    公开(公告)号:BR112013009049A2

    公开(公告)日:2016-07-26

    申请号:BR112013009049

    申请日:2011-10-13

    Applicant: BASF SE

    Abstract: processo para operação a longo prazo de uma oxidação de fase de gás parcial catalisada heterogeneamente de propeno a acroleína. é descrito um processo para operação a longo prazo de uma oxidação de fase de gás parcial catalisada heterogeneamente de propeno a acroleína, em que o propeno presente na mistura de entrada do gás de reação é parcialmente oxidado nesta mistura de gás através do catalisador de leito fixo que é acomodado em duas zonas de temperatura espacialmente sucessivas a, b, e operação a longo prazo, como uma medição para anular a redução na qualidade do catalisador de leito fixo, a temperatura de pelo menos uma das duas zonas de temperatura é aumentada, de maneira tal que a diferença t^ b^ - t^ a^ se torne crescentemente maior, onde t^ b^ é a temperatura da zona de temperatura b, e t^ a^ a temperatura da zona de temperatura a.

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