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

    公开(公告)号：WO2022189219A1

    公开(公告)日：2022-09-15

    申请号：PCT/EP2022/055187

    申请日：2022-03-01

    Applicant: BASF SE

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

    IPC: C07C41/06 ,  C07C41/58 ,  C07C43/04 ,  C07C1/20 ,  C07C11/09 ,  C07C29/10 ,  C07C29/80 ,  C07C31/12 ,  C07C7/04 ,  C07C11/02

    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mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), and the alkyl tert-butyl ether being withdrawn as the bottom product (7);(c) vaporizing the bottom product from the first distillation unit (5) in an evaporator (8) obtaining a vapor stream (9);(d) reacting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the reaction mixture (11) from the ether cleavage unit (10) in the second distillation unit (12), isobutene being withdrawn as the overhead product (13), the primary alcohol and diisobutene being withdrawn as the bottom product (14) and being recycled to the etherification unit (3); wherein a purge stream (15) containing high boiling components with a normal boiling point higher than that of the alkyl tert-butyl ether is withdrawn from the evaporator (8) in step (c).

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    2.
    发明申请
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：WO2022189218A1

    公开(公告)日：2022-09-15

    申请号：PCT/EP2022/055186

    申请日：2022-03-01

    Applicant: BASF SE

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

    IPC: C07C1/20 ,  C07C7/04 ,  C07C11/02 ,  C07C11/09 ,  C07C29/10 ,  C07C29/80 ,  C07C31/12 ,  C07C41/06 ,  C07C41/58 ,  C07C43/04

    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
    4.
    发明申请
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：WO2022189216A1

    公开(公告)日：2022-09-15

    申请号：PCT/EP2022/055183

    申请日：2022-03-01

    Applicant: BASF SE

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

    IPC: C07C7/148 ,  C07C11/09 ,  C07C7/04 ,  C07C41/06 ,  C07C41/42 ,  C07C43/04

    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).

    NICKELHEXAALUMINATHALTIGER KATALYSATOR ZUR REFORMIERUNG VON KOHLENWASSERSTOFFEN IN GEGENWART VON KOHLENDIOXID
    6.
    发明申请
    NICKELHEXAALUMINATHALTIGER KATALYSATOR ZUR REFORMIERUNG VON KOHLENWASSERSTOFFEN IN GEGENWART VON KOHLENDIOXID 审中-公开
    NICKELHEXAALUMINATHALTIGER催化剂的对二氧化碳的存在烃类进行重整

    公开(公告)号：WO2014135642A1

    公开(公告)日：2014-09-12

    申请号：PCT/EP2014/054362

    申请日：2014-03-06

    Applicant: BASF SE

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

    IPC: B01J35/00 ,  B01J37/08 ,  B01J37/04 ,  B01J37/03 ,  B01J23/00 ,  B01J23/02 ,  B01J23/755 ,  B01J23/78 ,  B01J23/83 ,  B01J21/04 ,  C01B3/00

    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: Die Erfindung betrifft nickelhexaaluminathaltigen Katalysator zur Reformierung von Kohlenwasserstoffen, vorzugsweise Methan, in Gegenwart von Kohlendioxid umfassend Hexaaluminat mit Anteil im Bereich von 65 bis 95 Gew.-%, vorzugweise von 70 bis 90 Gew.-%, und kristalline, oxydische Nebenphase aus der Gruppe LaAlO 3 , SrAl 2 O 4 und/oder BaAl 2 O 4 im Bereich von 5 bis 35 Gew.-%, vorzugweise 10 bis 30 Gew.-%. Die BET-Oberfläche des Katalysators ist ≥ 5 m 2 /g, vorzugsweise ≥ 10 m 2 /g. Der molare Nickelgehalt des Katalyators ist ≤ 3 mol-%, vorzugsweise ≤ 2,5 mol-% und weiter vorzugsweise ≤ 2 mol-%. Vorzugsweise handelt es sich bei den Zwischenebenenkationen um Ba und/oder Sr. Das Verfahren zur Herstellung des Katalysators umfasst die Schritte: (i) Herstellung einer Mischung aus Metallsalzen, vorzugsweise Nitratsalze von Ni sowie Sr und/oder La, und einer nanopartikulären Aluminiumquelle, (ii) Abformung und (iii) Kalzinierung. Der erfindungsgemäße Katalysator wird in einem Reformierungsverfahren mit Kohlenwasserstoffen, vorzugweise Methan, und CO 2 in Kontakt gebracht. Vorzugsweise bei einer Temperatur > 800 °C. Der Katalysator ist auch durch strukturelle und bevorzugte Eigenschaften des Nickels gekennzeichnet, dass Nickelpartikel zumeist tetragonale Ausprägung aufweisen und die Partikeln ≤ 50 nm, vorzugsweise ≤ 40 nm und insbesondere vorzugsweise ≤ 30 nm sind und feindispergiert als Aufwachsung auf Hexaaluminatpartikeln vorliegen. Der Katalysator weist nur eine sehr geringe Tendenz zur Bildung von Koks auf.

    Abstract translation: 本发明涉及一种nickelhexaaluminathaltigen催化剂用于烃类，优选甲烷的重整，在二氧化碳包括具有含量为65至95重量％六铝酸盐，优选为70的存在，以90重量％，以及选自结晶，氧化次要相 LaAlO 3的，材料SrAl2O4和/或BaAl2O4在5至35重量％，优选10〜30重量％的范围内。 该催化剂的BET表面积为≥5米2 /克，优选≥10平方米/克。 镍Katalyators的摩尔含量是≤3摩尔％，优选≤2.5摩尔％，更优选≤2摩尔％。 优选地，在中间层中的阳离子是钡和/或高级的制造催化剂的方法，包括以下步骤：（i）制备的金属盐的混合物，Ni和Sr和/或La的优选硝酸盐，和纳米微粒铝源，（ ⅱ）铸造和（iii）煅烧。 本发明的催化剂以与烃，优选甲烷和CO 2重整工艺接触。 优选在温度> 800℃ 该催化剂的特征还在于由镍的结构和优选的性能，镍颗粒，其通常具有四方表达和≤50纳米颗粒，优选≤40nm的和特别优选≤30nm的微细分散和存在于Hexaaluminatpartikeln过度生长。 该催化剂具有非常低的倾向形成积炭。

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    10.
    发明公开
    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE 审中-公开

    公开(公告)号：EP4056549A1

    公开(公告)日：2022-09-14

    申请号：EP21161219.7

    申请日：2021-03-08

    Applicant: BASF SE

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

    IPC: C07C7/148 ,  C07C11/09 ,  C07C7/04 ,  C07C41/06 ,  C07C41/42 ,  C07C43/04

    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 byproduct 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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