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    METHOD FOR CRYSTALLIZING MATERIAL TO BE ISOLATED BY VAPORIZATION AND VAPOR CONDENSATION
    1.
    发明专利
    METHOD FOR CRYSTALLIZING MATERIAL TO BE ISOLATED BY VAPORIZATION AND VAPOR CONDENSATION 失效

    公开(公告)号：JPH10323502A

    公开(公告)日：1998-12-08

    申请号：JP12137598

    申请日：1998-04-30

    Applicant: BASF AG

    Inventor： ECK BERND ,  HEILEK JOERG

    IPC: B01D9/02 ,  B01D9/00 ,  C01D1/30 ,  C07C29/78 ,  C07C31/20 ,  C07C51/43 ,  C07C53/08

    Abstract: PROBLEM TO BE SOLVED: To increase the application range of crystallization and to obtain an economically advantageous method by controlling the partial pressure of the fluid component which is condensed from a liquid mixture containing a specified material to be isolated, to be lower than the partial pressure of the fluid component on a crystallization soln., and controlling the solidifying temp. of the liquid mixture to be lower than the condensation temp. in the liquid mixture. SOLUTION: The material to be isolated means inorg. salts, salts. of org. compds., solvates of these, and preferably hydrates present in a mixture with water or an org. solvent as a fluid. Or, it means a certain kind of org. component in such a mixture with water or an org. solvent that has a narrow boiling temp. range, however, the gas phase and the liquid phase in an equilibrium state under crystallization pressure and a crystallization temp. show

    METHOD FOR THE REGULATION OF A HYDRAULIC WASH COLUMN
    3.
    发明申请
    METHOD FOR THE REGULATION OF A HYDRAULIC WASH COLUMN 审中-公开
    一种用于控制液压洗涤塔

    公开(公告)号：WO2006111565A3

    公开(公告)日：2007-04-19

    申请号：PCT/EP2006061714

    申请日：2006-04-20

    Applicant: BASF AG ,  HEILEK JOERG ,  MUELLER-ENGEL KLAUS JOACHIM ,  HAMMON ULRICH ,  WALTER THOMAS

    Inventor： HEILEK JOERG ,  MUELLER-ENGEL KLAUS JOACHIM ,  HAMMON ULRICH ,  WALTER THOMAS

    IPC: B01D11/02 ,  B01D9/00

    CPC classification number: C07C51/43 ,  C07C57/04

    Abstract: Disclosed is a method for operating a hydraulic wash column, in which the position of the wash front in the wash column is determined by means of the rate of flow of the control liquor conducted into the wash column and/or by means of the rate of flow of the suspension conducted into the wash column, and the rate of flow is defined with the aid of the difference in pressure between points in the suspension zone located upstream of the wash front and points in the zone extending from the wash front to the end of the crystal bed in the column.

    Abstract translation: 进行操作的液压洗涤塔，其中积累前在洗涤塔的通过的电流的量的装置的位置，以被引导到洗涤塔控制液和/或由所述压力差的装置定位在由被引导到洗涤塔悬浮液和电流设定的量的质量流量的装置的方法， 它由在位于所述堆积前悬架区和点前面在高达晶体床从堆积前区突出的端部的点之间的列。

    METHOD FOR OBTAINING PURE N-VINYL PYRROLIDONE
    6.
    发明申请
    METHOD FOR OBTAINING PURE N-VINYL PYRROLIDONE 审中-公开
    得到纯N-乙烯基吡咯烷酮

    公开(公告)号：WO0190066A3

    公开(公告)日：2002-08-01

    申请号：PCT/EP0106006

    申请日：2001-05-25

    Applicant: BASF AG ,  ECK BERND ,  HEILEK JOERG ,  SCHMIDT-RADDE MARTIN ,  HELFERT HERBERT

    Inventor： ECK BERND ,  HEILEK JOERG ,  SCHMIDT-RADDE MARTIN ,  HELFERT HERBERT

    IPC: C07D201/16 ,  C07D207/26 ,  C07D207/267

    CPC classification number: C07D207/267 ,  C07D201/16

    Abstract: The invention relates to a method for obtaining pure N-vinyl pyrrolidone from raw materials containing N-vinyl pyrrolidone, said method comprising a single or multiple-stage crystallisation method. The method is characterised in that the mother liquor of the first crystallisation stage is either purified by distillation and/or extraction or is returned to a product stream of the production process, said stream containing an N-vinyl pyrrolidone.

    Abstract translation: 公开了一种用于从含N乙烯基吡咯烷酮的粗产物得到纯的N-乙烯基吡咯烷酮，包括单级或多级结晶方法，其特征在于供给所述母液从所述第一结晶阶段或者是蒸馏和/或萃取纯化或在A N的方法 返回制造过程的含乙烯基吡咯烷酮的产物流。

    Process to control hydraulic wash column, comprises feeding mother liquor, conducting liquor to filter tube, feeding control liquor to wash column, purifying liquor, transporting crystal bed, removing crystal and determining flow rate
    9.
    发明专利
    Process to control hydraulic wash column, comprises feeding mother liquor, conducting liquor to filter tube, feeding control liquor to wash column, purifying liquor, transporting crystal bed, removing crystal and determining flow rate 未知

    公开(公告)号：DE102005018702A1

    公开(公告)日：2006-10-26

    申请号：DE102005018702

    申请日：2005-04-21

    Applicant: BASF AG

    Inventor： HEILEK JOERG ,  MUELLER-ENGEL KLAUS JOACHIM ,  HAMMON ULRICH ,  WALTER THOMAS

    IPC: B01D9/00 ,  C07B63/00 ,  C07C57/07

    Abstract: Process for controlling a hydraulic wash column having a cylindrical shell (1) which delimits the column and within which filter tubes (2) in the vicinity of the second end of column and at least one filter (3) in the filter tube wall, comprises: feeding of mother liquor (7) into first end of column; conducting mother liquor into filter tube; feeding control liquor (9) into wash column (12); purifying the mother liquor and control liquor flow; transporting the crystal bed (10); continuous removing; melting; passing the melt through the crystal bed; and determining flow rates. Process for controlling a hydraulic wash column comprises: continuous feeding of a stream of a suspension comprises a substance to be purified suspended in a mother liquor (7) into the first end of the column with a pressure P2, which is greater than P1; conducting the mother liquor through the filters into the filter tube interior and out of the column through the filter tubes; feeding the control liquor (9) into the wash column (12) at the first end of the column and/or between this end and the start of the filter; purifying the mother liquor and control liquor flow in the column from the crystal bed of the substance, where the crystal bed (10) is having a buildup front faces the first end of the column and at which the crystals are added continuously to the crystal bed; transporting the crystal bed by the force resulting from the hydraulic flow pressure drop of the mother liquor and the control liquor flow in the column, where the filters into the wash zone disposed between the filters and the second end of the wash column; continuous removing of the crystals at the opposite end of the crystal bed to the buildup front; melting the removed crystals; passing the melt through the crystal bed as a wash liquid stream coming from the second end of the column against the transport direction of the crystals; and determining the flow rates of the control liquor and/or suspension conducted into the wash column by utilizing at least one pressure difference delta P s k, which exists in the column between at least one point in the zone projecting from the buildup front up to the end of the crystal bed (preferably in the concentration zone, projecting up to the start of the wash zone, of the crystal bed), where the hydraulic wash column has a cylindrical shell (1), which delimits and within which one or more filter tubes (2) extend through the column parallel to the cylinder axis and have, in the vicinity of the second end of the column, at least one filter (3) in the filter tube wall, which forms the sole direct connection between the filter tube interior under the pressure P1 and the interior of the column.

    10.
    发明专利
    未知

    公开(公告)号：DE50304605D1

    公开(公告)日：2006-09-21

    申请号：DE50304605

    申请日：2003-10-06

    Applicant: BASF AG

    Inventor： THIEL JOACHIM ,  HAMMON ULRICH ,  BAUMANN DIETER ,  HEILEK JOERG ,  SCHROEDER JUERGEN ,  MUELLER-ENGEL KLAUS JOACHIM

    IPC: C07C51/44 ,  C07C57/04

    Abstract: In a process for preparing acrylic acid, an acrylic acid-containing product gas mixture obtained by catalytic gas phase partial oxidation of a C 3 precursor of acrylic acid, after direct cooling with a quench liquid, is fractionally condensed in a separating column provided with internals, rising into itself with sidestream takeoff of crude acrylic acid, and the acrylic acid oligomers which form are dissociated and the resulting dissociation gas is subjected to a countercurrent rectification before it is recycled.

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