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    Optimization of Geometry of Shaped Body and Manufacturing Tools
    1.
    发明申请
    Optimization of Geometry of Shaped Body and Manufacturing Tools 有权

    公开(公告)号：US20230004686A1

    公开(公告)日：2023-01-05

    申请号：US17779780

    申请日：2020-11-26

    Applicant: BASF SE

    Inventor： Marcelo Daniel Kaufman Rechulski ,  Miguel Angel Romero Valle ,  Stefan Lipp ,  Marco Oskar Kennema ,  Matthias Johannes Wagner

    IPC: G06F30/10 ,  G06F30/27

    Abstract: A computer-implemented method (110) for designing at least one shaped body (112), a computer-implemented method (138) for designing a manufacturing process for manufacturing at least one shaped body (112), a designing system (152) for designing at least one shaped body (112) and a manufacture-designing system for designing a manufacturing process for manufacturing at least one shaped body (112). The computer-implemented method (110) for designing at least one shaped body (112) comprises: a) retrieving, by using at least one interface (154), at least one set of target criteria for the shaped body (112); b) defining, by using at least one geometry defining unit (156), at least one seed geometry for the shaped body (112); c) generating, by using at least one parameter generating unit (158), a set of parameters comprising at least one geometry parameter of the seed geometry; d) simulating, by using at least one simulation unit (160), the shaped body by varying values of the set of parameters and by corn-paring simulated criteria for these values with the set of target criteria, thereby generating at least one adapted set of parameters for which the target criteria are fulfilled at least within predetermined tolerances; and e) determining, by using at least one lead candidate geometry defining unit (162), at least one lead candidate geometry of the at least one shaped body (112) from the adapted set of parameters.

    Catalyst for producing ethylene oxide by gas-phase oxidation
    2.
    发明授权
    Catalyst for producing ethylene oxide by gas-phase oxidation 有权

    公开(公告)号：US12121881B2

    公开(公告)日：2024-10-22

    申请号：US17285799

    申请日：2019-09-19

    Applicant: BASF SE

    Inventor： Andrey Karpov ,  Marco Oskar Kennema ,  Nicolas Duyckaerts ,  Christian Walsdorff ,  Christian Bartosch ,  Juergen Zuehlke ,  Miguel Angel Romero Valle

    IPC: B01J23/68 ,  B01J21/04 ,  B01J35/40 ,  B01J35/56 ,  B01J35/61 ,  B01J35/63 ,  B01J35/64 ,  B01J35/66 ,  B01J37/02 ,  B01J37/08 ,  C07D301/04

    CPC classification number: B01J23/688 ,  B01J21/04 ,  B01J35/40 ,  B01J35/56 ,  B01J35/612 ,  B01J35/633 ,  B01J35/635 ,  B01J35/651 ,  B01J35/653 ,  B01J35/657 ,  B01J35/695 ,  B01J37/0213 ,  B01J37/082 ,  C07D301/04

    Abstract: A shaped catalyst body for producing ethylene oxide by gas-phase oxidation of ethylene, comprising silver deposited on a porous refractory support, the shaped catalyst body having a first face side surface, a second face side surface and a circumferential surface, characterized by a content of at least 20 wt.-% of silver, relative to the total weight of the shaped catalyst body; a multilobe structure; a plurality of passageways extending from the first face side surface to the second face side surface, outer passageways being arranged around a central passageway with one outer passageway being assigned to each lobe, wherein neighboring outer passageways are arranged essentially equidistantly to each other and the outer passageways are arranged essentially equidistantly to the central passageway; a minimum wall thickness A between two neighboring passageways in the range of 0.6 to 1.3 mm; a minimum wall thickness B between each outer passageway and the circumferential surface in the range of 1.1 to 1.8 mm; and a BET surface area in the range of 1.6 to 3.0 m2/g. The shaped catalyst bodies allow for a favorable balance between mechanical stability, pressure drop and selectivity. The invention also relates to a process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising reacting ethylene and oxygen in the presence of a shaped catalyst body as defined above. The invention further relates to a process for preparing a shaped catalyst body as above, comprising i) impregnating a refractory support having a BET surface area in the range of 1.4 to 2.5 m2/g with a silver impregnation solution; and ii) subjecting the impregnated refractory support to a calcination process; wherein steps i) and ii) are optionally repeated.

    Process for producing ethylene oxide by gas-phase oxidation of ethylene
    3.
    发明授权
    Process for producing ethylene oxide by gas-phase oxidation of ethylene 有权

    公开(公告)号：US12187692B2

    公开(公告)日：2025-01-07

    申请号：US17285780

    申请日：2019-09-19

    Applicant: BASF SE

    Inventor： Andrey Karpov ,  Marco Oskar Kennema ,  Nicolas Duyckaerts ,  Christian Walsdorff ,  Christian Bartosch ,  Juergen Zuehlke ,  Miguel Angel Romero Valle

    IPC: C07D301/10 ,  B01J21/04 ,  B01J23/68 ,  B01J35/31 ,  B01J35/40 ,  B01J35/56 ,  B01J35/61 ,  B01J35/63 ,  B01J35/66

    Abstract: A process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising: directing a feed comprising gaseous ethylene and gaseous oxygen through a packing of individual shaped catalyst bodies, under conditions conducive to obtain a reaction mixture containing at least 2.7 vol.-% of ethylene oxide, wherein each shaped catalyst body comprises silver deposited on a refractory support and is characterized by a content of at least 20 wt.-% of silver, relative to the total weight of the shaped catalyst body; a BET surface area in the range of 1.6 to 3.0 m2/g; a first face side surface, a second face side surface and a circumferential surface with a plurality of passageways extending from the first face side surface to the second face side surface; and a uniform multilobed cross-section; and a longest direct diffusion pathway d, with 2d being in the range of 0.7 to 2.4 mm, wherein the longest diffusion pathway d is defined as the shortest distance from the geometric surface of the shaped catalyst body to a point inside the structure of the shaped catalyst body for which point the shortest distance is the largest among all points. The process allows for increased activity and/or stability of the catalyst while maintaining or increasing selectivity at high productivity.

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