25.
    发明专利
    未知

    公开(公告)号:BRPI0716259A2

    公开(公告)日:2013-08-06

    申请号:BRPI0716259

    申请日:2007-09-17

    Applicant: BASF SE

    Abstract: A method (M1) for mixing liquids or mixtures of liquids and finely-divided solids (I) in a closed tank where (I) fills only part of the available volume and the rest is filled by gas, by feeding in the same liquid or mixture (I) as a propulsive jet from a nozzle with a pulse-exchange space containing the jet nozzle outlet, in which the intake zone between jet nozzle and pulse-exchange space (PES) has a casing with at least one intake which is below the central jet leading from the nozzle to the PES. Independent claims are included for (1) a jet nozzle as above in which the casing has at least one intake opening into a dip tube or at least one connection for such a tube (2) a mixing method (M2) as above in which a different liquid or mixture is fed in as a propulsive jet .

    Thermisches Trennverfahren
    26.
    发明专利

    公开(公告)号:DE102012204436A1

    公开(公告)日:2012-10-04

    申请号:DE102012204436

    申请日:2012-03-20

    Applicant: BASF SE

    Abstract: Ein thermisches Trennverfahren zwischen einem in einer Trennkolonne aufsteigenden Gas und einer in der Trennkolonne absteigenden Flüssigkeit, die (Meth)acrylmonomere enthalten, wobei die Trennkolonne eine Abfolge von Querstrom-Stoffaustauschböden enthält, deren Querstrom-Stoffaustauschböden in Querstromrichtung sowohl vor als auch hinter einem Ablaufschacht für die absteigende Flüssigkeit Durchtrittsöffnungen für das aufsteigende Gas aufweisen, sowie solche Querstrom-Stoffaustauschböden und eine solche in einer Trennkolonne enthaltene Abfolge von Querstrom-Stoffaustauschböden.

    27.
    发明专利
    未知

    公开(公告)号:AT533552T

    公开(公告)日:2011-12-15

    申请号:AT07803512

    申请日:2007-09-17

    Applicant: BASF SE

    Abstract: A method (M1) for mixing liquids or mixtures of liquids and finely-divided solids (I) in a closed tank where (I) fills only part of the available volume and the rest is filled by gas, by feeding in the same liquid or mixture (I) as a propulsive jet from a nozzle with a pulse-exchange space containing the jet nozzle outlet, in which the intake zone between jet nozzle and pulse-exchange space (PES) has a casing with at least one intake which is below the central jet leading from the nozzle to the PES. Independent claims are included for (1) a jet nozzle as above in which the casing has at least one intake opening into a dip tube or at least one connection for such a tube (2) a mixing method (M2) as above in which a different liquid or mixture is fed in as a propulsive jet .

    28.
    发明专利
    未知

    公开(公告)号:AT529449T

    公开(公告)日:2011-11-15

    申请号:AT08787056

    申请日:2008-08-08

    Applicant: BASF SE

    Abstract: What is described is a process for producing water-absorbing resins, in which a) acrylic acid is prepared at an acrylic acid production site, b) the acrylic acid prepared is dissolved in water at the acrylic acid production site to obtain an aqueous acrylic acid solution, c) the aqueous acrylic acid solution is fed into a pipeline at the acrylic acid production site and passed through the pipeline to an acrylic acid processing site and d) the aqueous acrylic acid solution is subjected to a free-radical polymerization at the acrylic acid processing site. The process ensures safe transport of the highly reactive acrylic acid. Endangerment as a result of premature polymerization, as in the case of glacial acrylic acid, is ruled out, since the acrylic acid is “diluted” by the aqueous solvent and the specific heat capacity and the evaporation enthalpy of the water limit the maximum temperature rise. The amount of polymerization inhibitors used be reduced or it is possible to entirely dispense with polymerization inhibitors. Temperature control of vessels and pipelines within which the aqueous acrylic acid solution is conducted can be dispensed with because the solidification point of the aqueous acrylic acid solution is lower than that of anhydrous acrylic acid.

    30.
    发明专利
    未知

    公开(公告)号:AT489153T

    公开(公告)日:2010-12-15

    申请号:AT03762574

    申请日:2003-07-02

    Applicant: BASF SE

    Abstract: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by

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