中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.015 seconds)

    PROCESS FOR OBTAINING ISOBUTENE FROM A C4-HYDROCARBON MIXTURE
    2.
    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mixture (4) from the etherification unit (3) in the first distillation unit (5), a C4-hydrocarbon raffinate being withdrawn as the overhead product (6), the alkyl tert-butyl ether and diisobutene being withdrawn as the liquid or vaporous bottom product (7), and vaporizing the bottom product (7) if it is withdrawn as a liquid: (c) reacting the vaporous bottom product (7) in the presence of an acidic catalyst obtaining isobutene and the primary alcohol as reaction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the reaction mixture (9) from the ether cleavage unit (8) in the second distillation unit (10), isobutene being withdrawn as the overhead product (11), the primary alcohol and diisobutene being withdrawn as the bottom product (12) and being recycled to the etherification unit (3); the plant further comprising a byproduct separation unit (15) being fed by a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).

    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：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 THE PRODUCTION OF OLIGOMERIZED OLEFINS
    6.
    发明申请
    PROCESS FOR THE PRODUCTION OF OLIGOMERIZED OLEFINS 审中-公开

    公开(公告)号：US20170247298A1

    公开(公告)日：2017-08-31

    申请号：US15517695

    申请日：2014-10-09

    Applicant: BASF SE

    Inventor： Hans-Guenter WAGNER ,  Christoph BAYER ,  Lothar KARRER ,  Sven CRONE ,  Markus EGGERSMANN ,  Kam Wing WONG ,  Patrik PIETZ ,  Heinz RUETTER

    IPC: C07C2/10 ,  C07C5/05 ,  C07C5/03

    Abstract: A process for the production of oligomerized olefins comprising the following steps: purification of an organic composition (OC1) in at least one adsorber to obtain an organic composition (OC2); oligomerization of organic composition (OC2) in the presence of a catalyst to obtain an organic composition (OC3); distillation of organic composition (OC3) in a distillation column (D1) to obtain an organic composition (OC4) from the upper part of (D1) and an organic composition (OC5) from the lower part of (D1); hydrogenation of organic composition (OC4) to obtain an organic composition (OC1 1) and regeneration of an adsorber (A1) employing organic composition (OC11) as regeneration media.

    PROCESS FOR PURIFICATION OF AN ORGANIC COMPOSITION
    8.
    发明申请
    PROCESS FOR PURIFICATION OF AN ORGANIC COMPOSITION 审中-公开

    公开(公告)号：US20170259188A1

    公开(公告)日：2017-09-14

    申请号：US15517558

    申请日：2014-10-09

    Applicant: BASF SE

    Inventor： Hans-Guenter WAGNER ,  Christoph BAYER ,  Lothar KARRER ,  Markus EGGERSMANN ,  Sven CRONE ,  Kam Wing WONG ,  Heinz RUETTER ,  Patrik PIETZ

    IPC: B01D15/00 ,  C07C5/03 ,  B01D3/14 ,  C07C2/06

    Abstract: Disclosed is a process for the purification of an organic composition (OC1) by adsorption using an assembly containing at least two adsorbers. The organic composition (OC1) comprising at least one alkane, at least one olefin and at least one compound containing oxygen and/or sulphur is fed into a first adsorber (A1) of the assembly in order to obtain an organic composition (OC2) comprising at least one alkane, at least one olefin and a reduced amount of at least one compound containing oxygen and/or sulphur compared to the respective amount in organic composition (OC1). Hydrogenation of the organic composition (OC2) provides a stream (S2) comprising at least one alkane and a reduced amount of at least one olefin compared to the respective amount in organic composition (OC2) obtained after feeding into the first adsorber (A1). A second adsorber (A2) of the assembly is regenerated by contact with stream (S2).

Patent Agency Ranking