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    Process for preparing 1,3-butadiene from N-butenes by oxidative dehydrogenation
    13.
    发明授权
    Process for preparing 1,3-butadiene from N-butenes by oxidative dehydrogenation 有权

    公开(公告)号：US09957208B2

    公开(公告)日：2018-05-01

    申请号：US15503189

    申请日：2015-08-11

    Applicant: BASF SE ,  Linde AG

    Inventor： Philipp Grüne ,  Oliver Hammen ,  Rainer Eckrich ,  Jan Pablo Josch ,  Christian Walsdorff ,  Andre Biegner ,  Gregor Bloch ,  Heinz Boelt ,  Hendrik Reyneke ,  Christine Toegel ,  Ulrike Wenning

    IPC: C07C5/48 ,  C07C7/00 ,  C07C7/08 ,  C07C7/11 ,  C07C7/09

    CPC classification number: C07C5/48 ,  C07C7/005 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C2523/887 ,  C07C11/167

    Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes, B) feeding the input gas stream a 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 b comprising butadiene, unconverted n-butenes, water vapor, 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 by contacting with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase of an organic solvent, wherein the organic solvent is selected from the group consisting of toluene, o-, m- and p-xylene, mesitylene, mono-, di- and triethylbenzene, mono-, di- and triisopropylbenzene and mixtures thereof, and the mass ratio of the aqueous phase to the organic phase in the cooling medium when it is fed into the cooling zones prior to the contacting with the product gas stream being from 0.015:1 to 10:1, Cb) compressing the cooled product gas stream b which may have been depleted of high-boiling secondary components in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, water vapor, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons comprising butadiene and n-butenes 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 with a butadiene-selective solvent into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes; F) distilling the stream e1 comprising butadiene and the selective solvent into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene.

    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    14.
    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：US20180105479A1

    公开(公告)日：2018-04-19

    申请号：US15561711

    申请日：2016-03-23

    Applicant: BASF SE ,  Linde AG

    Inventor： Jan Pablo JOSCH ,  Ragavendra Prasad BALEGEDDE RAMACHANDRAN ,  Christian Walsdorff ,  Regina BENFER ,  Anton WELLENHOFER ,  Ulrike WENNING ,  Heinz BOELT ,  Hendrik REYNEKE ,  Christine TOEGEL

    IPC: C07C5/48 ,  C07C7/00 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C11/167

    Abstract: The invention relates to a process for producing butadiene from n-butenes which comprises the steps of: A) providing a vaporous n-butenes-comprising input gas stream a1 by evaporating a liquid n-butenes-comprising stream a0; B) introducing the vaporous n-butenes-comprising input gas stream a1 and an at least oxygenous gas into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene to obtain a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides and possibly inert gases, Ca) chilling the product gas stream b by contacting with a cooling medium comprising an organic solvent in at least one chilling zone, the cooling medium being at least partially recycled into the chilling zone, Cb) compressing the chilled product gas stream b which is possibly depleted of high-boiling secondary components in at least one compression stage to obtain at least one aqueous condensate stream c1 and a gas stream c2 comprising butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases, D) removing noncondensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, possibly carbon oxides and possibly inert gases as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons comprising butadiene and n-butenes into an absorption medium to obtain a C4-hydrocarbons-laden absorption medium stream and the gas stream d2 and subsequently desorbing the C4 hydrocarbons from the laden absorption medium stream to obtain a C4 product gas stream d1, wherein at least some of the recycled cooling medium from step Ca) is brought into thermal contact with the liquid n-butenes-comprising stream a0 in one or more indirect heat exchangers and at least some of the liquid n-butenes-comprising stream a0 is evaporated by indirect heat transfer with the recycled cooling medium.

    Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene
    16.
    发明申请
    Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene 审中-公开
    丁烯丁二烯氧化脱氢工艺

    公开(公告)号：US20140163292A1

    公开(公告)日：2014-06-12

    申请号：US14097476

    申请日：2013-12-05

    Applicant: BASF SE

    Inventor： Philipp Grüne ,  Wolfgang Rüttinger ,  Christian Walsdorff

    IPC: C07C5/48

    CPC classification number: C07C5/48 ,  B01J23/882 ,  B01J23/94 ,  B01J37/0009 ,  B01J37/0045 ,  B01J37/031 ,  B01J37/08 ,  B01J38/02 ,  B01J38/12 ,  B01J38/14 ,  B01J2523/00 ,  C07C2521/06 ,  C07C2523/04 ,  C07C2523/18 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  Y02P20/584 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

    Abstract: The invention relates to a process for the oxidative dehydrogenation of n-butenes to butadiene, which comprises at least two production steps (i) and at least one regeneration step (ii), in which (i) in one production step, a starting gas mixture comprising n-butenes is mixed with an oxygen-comprising gas and brought into contact with a multimetal oxide catalyst which comprises at least molybdenum and a further metal and is arranged in a fixed catalyst bed in a fixed-bed reactor, and (ii) in a regeneration step, the multimetal oxide catalyst is regenerated by passing an oxygen-comprising regeneration gas mixture over the fixed catalyst bed and burning off the carbon deposited on the catalyst, where a regeneration step (ii) is carried out between two production steps (i), wherein the at least two production steps (i) are carried out at a temperature of at least 350° C. and the at least one regeneration step (ii) is carried out at a temperature which is not more than 50° C. above the temperature at which the preceding production step (i) was carried out.

    Abstract translation: 本发明涉及一种将丁烯氧化脱氢成丁二烯的方法，其包括至少两个生产步骤（i）和至少一个再生步骤（ii），其中（i）在一个生产步骤中，将起始气体 将包含正丁烯的混合物与含氧气体混合并与至少包含钼和另外的金属的多金属氧化物催化剂接触，并且在固定床反应器中的固定催化剂床中排列，和（ii） 在再生步骤中，通过使含氧再生气体混合物在固定的催化剂床上通过并燃烧沉积在催化剂上的碳来再生多金属氧化物催化剂，其中在两个生产步骤之间进行再生步骤（ii） i），其中所述至少两个制备步骤（i）在至少350℃的温度下进行，并且所述至少一个再生步骤（ii）在不高于50℃的温度下进行 在t之上 执行前述制备步骤（i）的温度。

    Coated Catalyst for the Oxidative Dehydrogenation of N-Butenes to Butadiene
    17.
    发明申请
    Coated Catalyst for the Oxidative Dehydrogenation of N-Butenes to Butadiene 审中-公开
    用于N-丁烯氧化脱氢成丁二烯的涂层催化剂

    公开(公告)号：US20140163289A1

    公开(公告)日：2014-06-12

    申请号：US14097383

    申请日：2013-12-05

    Applicant: BASF SE

    Inventor： Philipp Grüne ,  Cornelia Katharina Dobner ,  Christine Schmitt ,  Wolfgang Rüttinger ,  Christian Walsdorff ,  Frank Rosowski

    IPC: B01J23/887 ,  C07C5/48

    CPC classification number: B01J23/8878 ,  C07C5/48 ,  C07C2523/18 ,  C07C2523/28 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  C07C11/167

    Abstract: The invention relates to a coated catalyst which comprises (a) a support body, (b) a shell comprising a catalytically active multimetal oxide comprising molybdenum and at least one further metal, where the shell is made up of multimetal oxide particles having a d50 of from 6 to 13 μm, and can be obtained by (i) production of a multimetal oxide precursor composition comprising molybdenum and at least one further metal, (ii) production of a shaped body from the multimetal oxide precursor composition, (iii) calcination of the shaped body composed of the multimetal oxide precursor composition to produce a multimetal oxide composition, (iv) milling of the shaped body composed of multimetal oxide composition to form multimetal oxide particles having a d50 of from 6 to 13 μm, (v) coating of the support body with the multimetal oxide particles, (vi) thermal treatment of the coated support body.

    Abstract translation: 本发明涉及一种涂覆的催化剂，其包括（a）支撑体，（b）包含催化活性多金属氧化物的壳，所述催化活性多金属氧化物包含钼和至少一种另外的金属，其中所述壳由具有d50的多金属氧化物颗粒 6至13μm，并且可以通过（i）制备包含钼和至少一种其它金属的多金属氧化物前体组合物获得，（ii）从多金属氧化物前体组合物生产成形体，（iii）煅烧 由多金属氧化物前体组合物组成的成形体，以制备多金属氧化物组合物，（iv）研磨由多金属氧化物组合物构成的成形体，以形成d50为6至13μm的多金属氧化物颗粒，（v） 具有多金属氧化物颗粒的支撑体，（vi）涂覆的支撑体的热处理。

    Process for producing ethylene oxide by gas-phase oxidation of ethylene
    18.
    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.

    Process for preparing 1,3-butadiene from n-butenes by oxidative dehydrogenation
    20.
    发明授权
    Process for preparing 1,3-butadiene from n-butenes by oxidative dehydrogenation 有权

    公开(公告)号：US10358399B2

    公开(公告)日：2019-07-23

    申请号：US15523862

    申请日：2015-11-02

    Applicant: BASF SE ,  Linde AG

    Inventor： Philipp Grüne ,  Stephan Deublein ,  Christian Walsdorff ,  Jan Pablo Josch ,  Rainer Rahm ,  Hendrik Reyneke ,  Anton Wellenhofer ,  Ulrike Wenning ,  Christine Toegel ,  Heinz Boelt

    IPC: C07C5/48 ,  B01D3/40 ,  C07C7/05 ,  C07C7/04 ,  C07C7/08 ,  C07C7/11 ,  C07C7/00 ,  C07C11/167

    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.

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