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    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    1.
    发明公开
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：US20240140885A1

    公开(公告)日：2024-05-02

    申请号：US18280689

    申请日：2022-03-01

    Applicant: BASF SE

    Inventor： Hans-Guenter WAGNER ,  Randolph HUGO ,  Thomas ROUSSIERE ,  Suman THOTLA ,  Gerrit WATERS ,  Michael HUEBNER ,  Markus NEUDERT

    IPC: C07C5/32 ,  C07C7/00 ,  C07C7/04 ,  C07C7/148

    CPC classification number: C07C5/321 ,  C07C7/005 ,  C07C7/04 ,  C07C7/14891

    Abstract: The invention relates to a process for obtaining isobutene from an isobutene containing C4-hydrocarbon mixture (1) in a plant comprising an etherification unit (3), a first distillation unit (5), an ether cleavage unit (8) and a second distillation unit (10), the process comprising: (a) contacting the C4-hydrocarbon mixture (1) with a primary alcohol (2) and reacting the mixture with the primary alcohol in the presence of an acidic catalyst to form the corresponding alkyl tert-butyl ether as an intermediate product and diisobutene as a by-product in the etherification unit (3); (b) distilling the reaction mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), the alkyl tert-butyl ether and diisobutene being withdrawn as the liquid or vaporous bottom product (7), and vaporizing the bottom product (7) if it is withdrawn as a liquid; (c) reacting the vaporous bottom product (7) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction products in the ether cleavage unit (8); (d) distilling the reaction mixture (9) from the ether cleavage unit (8) in the second distillation unit (10), isobutene being withdrawn as the overhead product (11), the primary alcohol and diisobutene being withdrawn as the bottom product (12) and being recycled to the etherification unit (3); the plant further comprising a byproduct separation unit (15) being fed by a bottom purge stream (13) of the first distillation unit (5) and/or by a part of the bottom product of the second distillation unit (10), this feed stream (14) being split up in at least three byproduct streams wherein a first byproduct stream (16) is rich in diisobutene, a second byproduct stream (17) is rich in the primary alcohol, and a third byproduct stream (18) is rich in components with a normal boiling point higher than 110° C.

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    3.
    发明公开
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：US20240150264A1

    公开(公告)日：2024-05-09

    申请号：US18280686

    申请日：2022-03-01

    Applicant: BASF SE

    Inventor： Suman THOTLA ,  Hans-Guenter Wagner ,  Randolf HUGO ,  Gerrit WATERS ,  Michael HUEBNER ,  Markus NEUDERT ,  Thomas ROUSSIERE

    IPC: C07C7/05 ,  C07C1/22

    CPC classification number: C07C7/05 ,  C07C1/22

    Abstract: The invention relates to a process for obtaining isobutene from an isobutene containing C4-hydrocarbon mixture (1) in a plant comprising an etherification unit (3), a first distillation unit (5), an ether cleavage unit (10) and a second distillation unit (12), the process comprising: (a) contacting the C4-hydrocarbon mixture (1) with a primary alcohol (2) and reacting the mixture with the primary alcohol in the presence of an acidic catalyst to form the corresponding alkyl tert-butyl ether in the etherification unit (3); (b) distilling the reaction mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), and the alkyl tert-butyl ether being withdrawn as the bottom product (7); (c) vaporizing the bottom product from the first distillation unit (5) in an evaporator (8) obtaining a vapor stream (9); (d) reacting the vapor stream (9) of step (c) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction products in the ether cleavage unit (10); (e) distilling the reaction mixture (11) from the ether cleavage unit (10) in the second distillation unit (12), isobutene being withdrawn as the overhead product (13), the primary alcohol and diisobutene being withdrawn as the bottom product (14) and being recycled to the etherification unit (3); wherein a purge stream (15) containing high boiling components with a normal boiling point higher than that of the alkyl tert-butyl ether is withdrawn from the evaporator (8) in step (c).

    NICKEL HEXAALUMINATE-CONTAINING CATALYST FOR REFORMING HYDROCARBONS IN THE PRESENCE OF CARBON DIOXIDE
    5.
    发明申请
    NICKEL HEXAALUMINATE-CONTAINING CATALYST FOR REFORMING HYDROCARBONS IN THE PRESENCE OF CARBON DIOXIDE 有权
    在二氧化碳存在下用于改造碳氢化合物的含镍六卤化镓的催化剂

    公开(公告)号：US20160008791A1

    公开(公告)日：2016-01-14

    申请号：US14771888

    申请日：2014-03-06

    Applicant: BASF SE

    Inventor： Stephan SCHUNK ,  Ekkehard SCHWAB ,  Andrian MILANOV ,  Guido WASSERSCHAFF ,  Thomas ROUSSIERE ,  Gerhard COX ,  Bernd HINRICHSEN ,  Ulrich FLOERCHINGER

    IPC: B01J23/83 ,  B01J35/02 ,  C01B3/40 ,  B01J37/04 ,  B01J37/02 ,  B01J37/08 ,  B01J23/78 ,  B01J35/10

    CPC classification number: B01J23/83 ,  B01J21/04 ,  B01J23/002 ,  B01J23/02 ,  B01J23/755 ,  B01J23/78 ,  B01J35/002 ,  B01J35/006 ,  B01J35/023 ,  B01J35/1004 ,  B01J37/0236 ,  B01J37/031 ,  B01J37/036 ,  B01J37/04 ,  B01J37/08 ,  B01J37/088 ,  C01B3/40 ,  C01B2203/0227 ,  C01B2203/0805 ,  C01B2203/1058 ,  C01B2203/1082 ,  Y02E60/324

    Abstract: The invention relates to a nickel hexaaluminate-comprising catalyst for reforming hydrocarbons, preferably methane, in the presence of carbon dioxide, which comprises hexaaluminate in a proportion in the range from 65 to 95% by weight, preferably from 70 to 90% by weight, and a crystalline, oxidic secondary phase selected from the group consisting of LaAlO3, SrAl2O4 and BaAl2O4 in the range from 5 to 35% by weight, preferably from 10 to 30% by weight. The BET surface area of the catalyst is ≧5 m2/g, preferably ≧10 m2/g. The molar nickel content of the catalyst is ≦3 mol %, preferably ≦2.5 mol % and more preferably ≦2 mol %. The interlayer cations are preferably Ba and/or Sr. The process for producing the catalyst comprises the steps: (i) production of a mixture of metal salts, preferably nitrate salts of Ni and also Sr and/or La, and a nanoparticulate aluminum source, (ii) molding and (iii) calcination. The catalyst of the invention is brought into contact with hydrocarbons, preferably methane, and CO2 in a reforming process, preferably at a temperature of >800° C. The catalyst is also distinguished by structural and preferred properties of the nickel, namely that the nickel particles mostly have a tetragonal form and the particles have a size of ≦50 nm, preferably ≦40 nm and particularly preferably ≦30 nm, and are present finely dispersed as grown-on hexaaluminate particles. The catalyst has only a very low tendency for carbonaceous deposits to be formed.

    Abstract translation: 本发明涉及一种在二氧化碳存在下重整碳氢化合物（优选甲烷）的含六铝酸镍催化剂，其包含65重量％至95重量％，优选70至90重量％的六铝酸盐， 以及选自5至35重量％，优选10至30重量％范围内的LaAlO 3，SrAl 2 O 4和BaAl 2 O 4的结晶，氧化的第二相。 催化剂的BET表面积为≥5m2 / g，优选≥10m2 / g。 催化剂的摩尔镍含量为3％，优选为1％，2.5％，更优选为2％。 层间阳离子优选为Ba和/或Sr.制备催化剂的方法包括以下步骤：（i）制备金属盐，优选Ni和Sr和/或La的硝酸盐以及纳米颗粒铝源的混合物 ，（ii）成型和（iii）煅烧。 本发明的催化剂在重整过程中优选与烃，优选甲烷和CO 2接触，优选在800℃以上的温度下。催化剂的特征还在于镍的结构和优选性质，即镍 颗粒大多具有四方晶形，并且颗粒的尺寸为＆lt; nlE; 50nm，优选为＆lt; lE; 40nm，特别优选为＆lt; NE; 30nm，并且作为生长的六铝酸盐颗粒细分散存在。 催化剂仅形成碳沉积物的非常低的趋势。

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    6.
    发明公开
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：US20240300875A1

    公开(公告)日：2024-09-12

    申请号：US18280687

    申请日：2022-03-01

    Applicant: BASF SE

    Inventor： Hans-Guenter WAGNER ,  Suman THOTLA ,  Randolf HUGO ,  Gerrit WATERS ,  Michael HUEBNER ,  Markus NEUDERT ,  Thomas ROUSSIERE

    IPC: C07C11/09 ,  C07C7/00 ,  C07C7/04 ,  C07C7/148 ,  C07C41/06 ,  C07C41/42

    CPC classification number: C07C11/09 ,  C07C7/005 ,  C07C7/04 ,  C07C7/14891 ,  C07C41/06 ,  C07C41/42

    Abstract: The invention relates to a process for obtaining isobutene from an isobutene containing C4-hydrocarbon mixture (1) in a plant comprising an etherification unit (3), a first distillation unit (5), an ether cleavage unit (8) and a second distillation unit (10), the process comprising: (a) contacting the C4-hydrocarbon mixture (1) with a primary alcohol (2) and reacting the mixture with the primary alcohol in the presence of an acidic catalyst to form the corresponding alkyl tert-butyl ether as an intermediate product and diisobutene as a by-product in the etherification unit (3): (b) distilling the reaction mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), the alkyl tert-butyl ether and diisobutene being withdrawn as the liquid or vaporous bottom product (7), and vaporizing the bottom product (7) if it is withdrawn as a liquid: (c) reacting the vaporous bottom product (7) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction products in the ether cleavage unit (8): (d) distilling the reaction mixture (9) from the ether cleavage unit (8) in the second distillation unit (10), isobutene being withdrawn as the overhead product (11), the primary alcohol and diisobutene being withdrawn as the bottom product (12) and being recycled to the etherification unit (3); the plant further comprising a byproduct separation unit (15) being fed by a bottom purge stream (13) of the first distillation unit (5) and/or by a part of the bottom product of the second distillation unit (10), wherein a diisobutene product stream rich in diisobutene is separated from this feed stream (13, 14).

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