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    POROUS CATALYST-SUPPORT SHAPED BODY
    21.
    发明公开
    POROUS CATALYST-SUPPORT SHAPED BODY 审中-公开

    公开(公告)号：US20230302432A1

    公开(公告)日：2023-09-28

    申请号：US18011855

    申请日：2021-06-25

    Applicant: BASF SE

    Inventor： Sung Yeun CHOI ,  Andrey KARPOV ,  Christian WALSDORFF ,  Patrick HUBACH ,  Hubert WAINDOK ,  Bernd HINRICHSEN ,  Gonzalo PRIETO GONZALEZ ,  Tania RODENAS TORRALBA ,  Karl C. KHARAS

    IPC: B01J21/04 ,  B01J35/04 ,  B01J35/10 ,  B01J35/00 ,  B01J37/08 ,  C07D301/10 ,  B01J37/02

    CPC classification number: B01J21/04 ,  B01J35/002 ,  B01J35/04 ,  B01J35/1009 ,  B01J35/1042 ,  B01J35/1061 ,  B01J37/0201 ,  B01J37/0236 ,  B01J37/088 ,  C07D301/10

    Abstract: A porous shaped catalyst support body comprising at least 85% by weight of alpha-alumina, wherein the support has a total pore volume in the range from 0.5 to 2.0 mL/g as determined by mercury porosimetry, and a pore structure characterized by a geometric tortuosity τ in the range from 1.0 to 2.0; and an effective diffusion parameter η in the range from 0.060 to 1.0; wherein geometric tortuosity τ and effective diffusion parameter η are determined by image analysis algorithms from computer-assisted 3D reconstructions of focused ion beam scanning electron microscope analyses. The structure of the support has a high total pore volume, such that impregnation with a large amount of silver is possible, while the surface area is kept sufficiently high in order to assure optimal dispersion of the catalytically active species, especially metal species. The support has a pore structure that leads to a maximum rate of mass transfer within the support. The invention also relates to a shaped catalyst body for preparation of ethylene oxide by gas phase oxidation of ethylene, comprising at least 15% by weight of silver, based on the total weight of the catalyst, deposited on a porous shaped catalyst support body as described above. The invention further relates to a process for producing the shaped catalyst body, in which a) a porous shaped catalyst support body as described above is impregnated with a silver impregnation solution, preferably under reduced pressure; and the impregnated porous shaped catalyst support body is optionally subjected to drying; and b) the impregnated porous shaped catalyst support body is subjected to a heat treatment; wherein steps a) and b) are optionally repeated. The invention also relates to a process for preparing ethylene oxide by gas phase oxidation of ethylene, comprising the reaction of ethylene and oxygen in the presence of a shaped catalyst body according to claim 11.

    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    28.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 审中-公开

    公开(公告)号：US20170334809A1

    公开(公告)日：2017-11-23

    申请号：US15523862

    申请日：2015-11-02

    Applicant: BASF SE ,  Linde AG

    Inventor： Philipp GRUNE ,  Stephan DEUBLEIN ,  Christian WALSDORFF ,  Jan Pablo JOSCH ,  Rainer RAHM ,  Hendrik REYNEKE ,  Anton WELLENHOFER ,  Ulrike WENNING ,  Christine TOEGEL ,  Heinz BOELT

    IPC: C07C5/48 ,  C07C7/04 ,  C07C7/00 ,  C07C7/11 ,  C07C11/167

    CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/04 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167 ,  C07C2523/31 ,  C07C2523/843 ,  C07C2523/847

    Abstract: A process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream comprising n-butenes; B) feeding the input gas stream comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream; Ca) cooling the product gas stream by contacting with a circulating cooling medium in at least one cooling zone; Cb) compressing the cooled product gas stream in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons in an absorbent, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1; E) separating the C4 product stream d1 by extractive distillation; F) distilling the stream e1 into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene; G) removing a portion of the aqueous phase of the cooling medium which circulates in step Ca) as aqueous purge stream g; H) distillatively separating the aqueous purge stream g into a fraction h1 and a fraction h2 depleted of organic constituents.

    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    30.
    发明申请
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 有权
    通过氧化脱氢制备N-丁烯的1,3-丁二烯的方法

    公开(公告)号：US20160355450A1

    公开(公告)日：2016-12-08

    申请号：US15033203

    申请日：2014-10-27

    Applicant: BASF SE

    Inventor： Philipp GRÜNE ,  Oliver HAMMEN ,  Christine SCHMITT ,  Ragavendra Prasad BALEGEDDE RAMACHANDRAN ,  Jan Pablo JOSCH ,  Christian WALSDORFF

    IPC: C07C5/48 ,  B01J23/00 ,  B01J23/887

    CPC classification number: C07C5/48 ,  B01J23/002 ,  B01J23/8878 ,  B01J37/0045 ,  B01J2523/00 ,  C07C7/08 ,  C07C7/11 ,  C07C2523/04 ,  C07C2523/18 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/54 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

    Abstract: A process for preparing butadiene from n-butenes, comprising the steps of A) providing an input gas stream a1 comprising n-butenes; B) feeding the input gas stream a1 comprising n-butenes, an oxygenous gas and an oxygenous cycle gas stream a2 into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b and optionally at least partly removing high-boiling secondary components and steam, giving a product gas stream b′, Cb) compressing and cooling the product gas stream b′ in at least one compression and cooling stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, steam, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, Da) absorbing the C4 hydrocarbons comprising butadiene and n-butenes in an aromatic hydrocarbon solvent as an absorbent and removing uncondensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, any carbon oxides, aromatic hydrocarbon solvent and any inert gases as gas stream d2 from the gas stream c2, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1, Db) at least partly recycling the gas stream d2 as cycle gas stream a2 into the oxidative dehydrogenation zone, wherein the content of aromatic hydrocarbon solvent in the cycle gas stream a2 is limited to less than 1% by volume.

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