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    PROCESS FOR STARTING UP A SEPARATING PROCESS FOR PURIFYING REMOVAL OF ACRYLIC ACID CRYSTALS FROM A SUSPENSIONS OF CRYSTALS THEREOF IN MOTHER LIQUOR
    2.
    发明专利
    PROCESS FOR STARTING UP A SEPARATING PROCESS FOR PURIFYING REMOVAL OF ACRYLIC ACID CRYSTALS FROM A SUSPENSIONS OF CRYSTALS THEREOF IN MOTHER LIQUOR 未知

    公开(公告)号：MY162417A

    公开(公告)日：2017-06-15

    申请号：MYPI2012001596

    申请日：2010-10-14

    Applicant: BASF SE

    Inventor： HEILEK JÖRG ,  LITTERS DIRK ,  MÜLLER-ENGEL KLAUS JOACHIM

    IPC: C07C51/43

    Abstract: A process for starting up a separating process for purifying removal of acrylic acid crystals from a suspension S of crystals thereof in mother liquor with a hydraulic wash column (0) which has a crystal melt circuit (31) including crystal melt space (C), and a process space (8) and a distributor space (A) which are separated by an end with passages connecting the two spaces, in which the crystal bed (4) is formed for the first time by first filling the crystal melt circuit (31) and, at least partly, the process space (B) with an acrylic acid-comprising startup liquid whose acrylic acid crystal formation temperature is less than or equal to the temperature of the suspension S increased by 15°C., and then continuing the filling of the wash column (0) with the suspension S and optionally with control liquor until the difference between the pressure in the crystal melt space (C) and the pressure in the distributor space (A) falls suddenly, the arithmetic mean of the total waste liquor flow flowing through the filters (7) of the filter tubes (6) of the wash column (0) until this time, based on the area of all filters, being not more than 80 m3/(m2• h).

    processo para operação a longo prazo de uma oxidação de fase de gás parcial catalisada heterogeneamente de propeno a acroleína
    4.
    发明专利
    processo para operação a longo prazo de uma oxidação de fase de gás parcial catalisada heterogeneamente de propeno a acroleína 未知

    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

    Inventor： ROSOWSKI FRANK ,  MACHT JOSEF ,  MÜLLER-ENGEL KLAUS JOACHIM

    IPC: C07C45/35 ,  C07C47/22

    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.

    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
    7.
    发明专利
    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 未知

    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

    Inventor： WELKER-NIEUWOUDT CATHRIN ALEXANDRA ,  DOBNER CORNELIA KATHARINA ,  WALSDORFF CHRISTIAN ,  MÜLLER-ENGEL KLAUS JOACHIM ,  MACHT JOSEF

    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.

    processo para oxidação parcial em fase gasosa heterogeneamente catalisada
    9.
    发明专利
    processo para oxidação parcial em fase gasosa heterogeneamente catalisada 未知

    公开(公告)号：BRPI0620948B1

    公开(公告)日：2016-03-01

    申请号：BRPI0620948

    申请日：2006-12-21

    Applicant: BASF SE

    Inventor： LAQUA GERHARD ,  MÜLLER-ENGEL KLAUS JOACHIM ,  CREMER ULRICH ,  HAMMON ULRICH ,  WEGERLE ULRIKE

    IPC: B01J8/06 ,  C07C45/35 ,  C07C51/25

    Abstract: processo para oxidação parcial em fase gasosa fieterogeneamente catalisada. um processo para oxidação parcial em fase gasosa heterogeneamente catalisada, de um composto de partida orgânico, sobre um leito de catalisador fixo recém-instalado em uma câmara de reação, em que a redução da qualidade do leito de catalisador fixo é restaurada com o aumento do tempo de operação, mediante substituição de parte do leito de catalisador fixo por um leito de catalisador fixo parcial de substituição cuja atividade específica do voluma seja menor do que a atividade específica do volume do leito de catalisador fixo parcial substituído em seu estado recém-instalado.

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