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    PROCESS FOR PREPARING ACRYLIC ACID
    1.
    发明公开
    PROCESS FOR PREPARING ACRYLIC ACID 审中-公开

    公开(公告)号：US20240343667A1

    公开(公告)日：2024-10-17

    申请号：US18292359

    申请日：2022-07-19

    Applicant: BASF SE

    Inventor： Tile GIESHOFF ,  Ulrich HAMMON ,  Juergen SCHROEDER ,  Peter ZUROWSKI ,  Christian REIN ,  Filip CRAUWELS

    IPC: C07C51/25 ,  C07C51/43

    CPC classification number: C07C51/252 ,  C07C51/43

    Abstract: A process for preparing acrylic acid, in which heterogeneously catalyzed gas phase partial oxidation of at least one C3 precursor of acrylic acid with molecular oxygen over catalysts in the solid state of matter at elevated temperature affords a product gas mixture comprising acrylic acid, water vapor and secondary components, then the product gas mixture is directed into a condensation column equipped with separating internals, the product gas mixture is allowed to ascend into itself within the condensation column and undergoes fractional condensation, separating the product gas mixture into a bottoms liquid comprising conversion products and secondary components that are higher-boiling than acrylic acid, a crude acrylic acid comprising water and secondary components that have been depleted overall as target product, an acid water still comprising acrylic acid and secondary components, and a residual gas mixture comprising secondary components that are lower-boiling than water, the target product is conducted out of the condensation column via a side draw and the side draw is above the feed point of the product gas mixture into the condensation column, wherein the parts of the condensation column that are in contact with product are made of stainless steel, at least one of the streams of matter fed to the condensation column comprises a source for halide ions, and halide ions are removed in the region of the separating internals of the condensation column above the side draw.

    CHIMNEY TRAY FOR A COLUMN FOR THERMAL TREATMENT OF FLUID MIXTURES
    6.
    发明申请
    CHIMNEY TRAY FOR A COLUMN FOR THERMAL TREATMENT OF FLUID MIXTURES 审中-公开

    公开(公告)号：US20170173491A1

    公开(公告)日：2017-06-22

    申请号：US15382036

    申请日：2016-12-16

    Applicant: BASF SE

    Inventor： Ulrich HAMMON ,  Thomas WALTER

    IPC: B01D3/32 ,  B01F3/04

    CPC classification number: B01D3/324 ,  B01D3/20 ,  B01D3/205 ,  B01F3/04078 ,  B01F3/04496

    Abstract: The present invention relates to a chimney tray (3) for a column (1) for thermal treatment of fluid mixtures, comprising a collecting tray (4) and at least two chimneys (5-1, 5-2) spaced apart horizontally in the collecting tray (4), where each chimney (5-1, 5-2) forms a vertically aligned chimney body (6-1, 6-2) which forms a passage orifice (7-1, 7-2) through the collecting tray (4), and has a cover unit (8-1, 8-2) arranged spaced apart from the chimney body (6-1, 6-2), and where the cover unit (8-1, 8-2) covers the respective passage orifices (7-1, 7-2) in the vertical direction. The chimney tray (3) of the invention is characterized by a screen (9) which extends around the chimney body (6-1) of a first chimney (5-1), with the lower annular edge (14) of the screen (9) below the upper edge (13) of the chimney body (6-1) of the first chimney (5-1) and the upper annular edge (11) of the screen (9) above the lower outer edge (12) of the cover unit (8-1) of the first chimney (5-1) or adjoining the lower outer edge (12) of the cover unit (8-1) of the first chimney (5-1).

    EXTRACTION COLUMN AND PROCESS FOR EXTRACTING A CONSTITUENT FROM A FLUID
    7.
    发明申请
    EXTRACTION COLUMN AND PROCESS FOR EXTRACTING A CONSTITUENT FROM A FLUID 有权
    萃取塔和从流体中提取物质的方法

    公开(公告)号：US20150166455A1

    公开(公告)日：2015-06-18

    申请号：US14573313

    申请日：2014-12-17

    Applicant: BASF SE

    Inventor： Ulrich HAMMON ,  Daniel PFEIFFER ,  Jonathan WALTER

    IPC: C07C51/48 ,  B01D11/04

    CPC classification number: C07C51/48 ,  B01D3/141 ,  B01D3/40 ,  B01D11/0426 ,  B01D11/043 ,  B01D2011/002

    Abstract: The present invention relates to an extraction column 1 having a vertically aligned column body 2 which is cylindrical at least in sections and forms a column cavity 3 having a horizontal maximum extent, with provision in the column body 2 of at least one first feed 4 for an extractant, at least one second feed 5 for the fluid to be extracted and at least one outlet 6 for the extract mixture and at least one outlet for the raffinate. In the inventive extraction column 1, a vertically aligned divider 7 arranged within the column cavity 3 subdivides the column cavity 3 into a plurality of vertically aligned and horizontally divided regions, the horizontal maximum extent of each region being less than the horizontal maximum extent of the column cavity 3. The invention further relates to a process for extracting a constituent from a fluid by means of such an extraction column 1.

    Abstract translation: 本发明涉及一种具有垂直排列的柱体2的抽取柱1，该柱主体2至少以分段为圆柱形并形成具有水平最大程度的柱形空腔3，在柱体2中设置有至少一个第一进料4，用于 萃取剂，用于待萃取的流体的至少一个第二进料5和用于提取物混合物的至少一个出口6和用于萃余液的至少一个出口。 在本发明的提取塔1中，布置在柱腔3内的垂直排列的分隔件7将柱腔3细分成多个垂直排列和水平分开的区域，每个区域的水平最大程度小于水平最大范围 柱腔3.本发明还涉及通过这种提取塔1从流体中提取成分的方法。

    PROCESS FOR PREPARING AN UNSATURATED ALDEHYDE AND/OR AN UNSATURATED CARBOXYLIC ACID
    8.
    发明申请
    PROCESS FOR PREPARING AN UNSATURATED ALDEHYDE AND/OR AN UNSATURATED CARBOXYLIC ACID 有权
    制备不饱和醛和/或不饱和羧酸的方法

    公开(公告)号：US20150133687A1

    公开(公告)日：2015-05-14

    申请号：US14536969

    申请日：2014-11-10

    Applicant: BASF SE

    Inventor： Josef MACHT ,  Christian WALSDORFF ,  Cornelia Katharina DOBNER ,  Cathrin Alexandra WELKER-NIEUWOUDT ,  Ulrich HAMMON

    IPC: C07C51/25 ,  B01J23/887 ,  C07C45/35

    CPC classification number: C07C51/252 ,  B01J23/8876 ,  C07C45/35 ,  C07C47/22 ,  C07C57/04

    Abstract: An α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid are prepared by gas phase oxidation of alkene with molecular oxygen over a fixed catalyst bed comprising a bed of hollow cylindrical shaped catalyst bodies having a multimetal oxide active composition. The fixed catalyst bed comprises at least three successive reaction zones; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor outlet; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor inlet; and the value WT=(ED−ID)/2 in the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than in the other reaction zones, in which ED is the external diameter and ID is the internal diameter of the shaped catalyst body. The yield of the products of value is enhanced in this way.

    Abstract translation: 通过在固定的催化剂床上用分子氧气气氧化烯烃制备α，β-不饱和醛和/或α，β-不饱和羧酸，所述催化剂床包含具有多金属氧化物活性的中空圆柱形催化剂体床 组成。 固定的催化剂床包括至少三个连续的反应区; 在最接近反应器出口的反应区域内不会发生固定催化剂床中最高的局部温度; 固定催化剂床中最高的局部温度不会在最接近反应器入口的反应区中发生; 在固定催化剂床中发生最高局部温度的反应区域中的值WT =（ED-ID）/ 2低于其他反应区域，其中ED为外径，ID为内径 的成形催化剂体。 以这种方式提高了产品的产量。

    PROCESS FOR SHUTTING-DOWN AND HEATING UP A TUBULAR REACTOR FOR A CATALYTIC GAS PHASE REACTION
    9.
    发明申请
    PROCESS FOR SHUTTING-DOWN AND HEATING UP A TUBULAR REACTOR FOR A CATALYTIC GAS PHASE REACTION 有权

    公开(公告)号：US20240424466A1

    公开(公告)日：2024-12-26

    申请号：US18570667

    申请日：2022-05-25

    Applicant: BASF SE

    Inventor： Ulrich HAMMON ,  Christian RAITH ,  Hans-Juergen BASSLER

    IPC: B01J19/00 ,  B01J8/06 ,  B01J19/24 ,  C07C51/25

    Abstract: The present invention relates to a process for shutting-down a tubular reactor (1) for a catalytic gas phase reaction from a reaction temperature, wherein the tubular reactor (1) comprises a plurality of vertically arranged reaction tubes (2), an upper tube sheet (5) and a lower tube sheet (6) which each are connected to upper ends and lower ends of the reaction tubes (2) in a gas-tight manner, and a reactor shell (7) which encloses the plurality of reaction tubes (2) forming a liquid-tight heat transfer space (9), wherein, in operation mode, a substantially anhydrous liquefied salt melt (8) is circulated in the heat transfer space (9), characterized in that water (10) is added to the substantially anhydrous liquefied salt melt (8), obtaining a water-salt mixture (11), while cooling the tubular reactor (1) to a temperature below the solidification temperature of the substantially anhydrous liquefied salt melt (8), such that the water-salt mixture (11) is kept in a liquefied state during the whole cooling step of the tubular reactor (1).

    METHOD OF STARTING UP A REACTOR FOR THE OXIDATIVE DEHYDROGENATION OF N-BUTENES
    10.
    发明申请
    METHOD OF STARTING UP A REACTOR FOR THE OXIDATIVE DEHYDROGENATION OF N-BUTENES 审中-公开

    公开(公告)号：US20190337870A1

    公开(公告)日：2019-11-07

    申请号：US16324315

    申请日：2017-08-08

    Applicant: BASF SE ,  LINDE AG

    Inventor： JAN UNGELENK ,  Oliver HAMMEN ,  Ulrich HAMMON ,  Rainer ECKRICH ,  Signe UNVERRICHT ,  Christian WALSDORFF ,  Heinz BOELT ,  Hendrik REYNEKE ,  Christine TOEGEL ,  Anton WELLENHOFER ,  Ulrike WENNING

    IPC: C07C5/48 ,  C07C7/11 ,  C07C11/167

    Abstract: Process for preparing butadiene from n-butenes, which has a start-up phase and an operating phase and the operating phase of the process comprises the steps: A) provision of a feed gas stream a1 comprising n-butenes; B) introduction of the feed gas stream a1 comprising n-butenes, an oxygen-comprising gas stream a2 and an oxygen-comprising recycle gas stream d2 into at least one oxidative dehydrogenation zone and oxidative dehydrogenation of n-butenes to butadiene, giving a product gas stream b comprising butadiene; C) cooling and compression of the product gas stream b, giving at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene; D) introduction of the gas stream c2 into an absorption zone and separation of incondensable and low-boiling gas constituents as gas stream d from the gas stream c2 by absorption of the C4 hydrocarbons in an absorption medium, giving an absorption medium stream loaded with C4 hydrocarbons and the gas stream d, and recirculation of the gas stream d as recycle gas stream d2 to the oxidative dehydrogenation zone, where the start-up phase comprises the steps, in the order i) to iv): i) introduction of a gas stream d2′ having a composition corresponding to the recycle gas stream d2 in the operating phase into the dehydrogenation zone and setting of the recycle gas stream d2 to at least 70% of the total volume flow in the operating phase; ii) optionally additional introduction of a steam stream a3 into the dehydrogenation zone; iii) additional introduction of the feed gas stream a1 comprising butenes at a lower volume flow than in the operating phase and raising of this volume flow until at least 50% of the volume flow of the feed gas stream a1 in the operating phase has been attained, with the total gas flow through the dehydrogenation zone corresponding to not more than 120% of the total gas flow during the operating phase; iv) additional introduction, when at least 50% of the volume flow of the feed gas stream a1 comprising butenes in the operating phase has been attained, of an oxygen-comprising stream a2 at a lower volume flow than in the operating phase and raising of the volume flows of the feed gas streams a1 and a2 until the volume flows in the operating phase have been attained, with the total gas flow through the dehydrogenation zone corresponding to not more than 120% of the total gas flow during the operating phase.

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