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    FLEXIBLE PREPARATION OF PROPYLENE AND HEXENE
    1.
    发明专利
    FLEXIBLE PREPARATION OF PROPYLENE AND HEXENE 失效

    公开(公告)号：JP2001302562A

    公开(公告)日：2001-10-31

    申请号：JP2001072595

    申请日：2001-03-14

    Applicant: BASF AG

    Inventor： SCHWAB PETER DR ,  SCHULZ RALF DR ,  HUBER SYLVIA

    IPC: C07C6/04 ,  C07B61/00 ,  C07C5/13 ,  C07C7/04 ,  C07C7/10 ,  C07C7/13 ,  C07C7/163 ,  C07C11/04 ,  C07C11/06 ,  C07C11/107 ,  C07C11/16 ,  C07C41/06 ,  C10G70/00

    Abstract: PROBLEM TO BE SOLVED: To provide a process for preparing propylene and hexene from a raffinate II feed comprising olefinic 4C-hydrocarbons. SOLUTION: This process for preparing the propene and hexene comprises (a) a step of obtaining a mixture comprising ethene, propene, butenes, 2-pentene, 3-hexene and butanes by a metathesis reaction in which butenes present in the feed stream are reacted with ethene in the presence of a transition metal catalyst using 0.05-0.6 molar equivalent of ethene based on the butenes, (b) a step of obtaining a low-boiling fraction A comprising 2-3C olefins and a high- boiling fraction comprising 4-6C olefins and butanes by fractional distillation, (c) a step of obtaining an ethene-containing fraction and a propene-containing fraction by fractionally distilling the low boiling fraction A, (d) a step of obtaining a low-boiling fraction B comprising butenes and butanes, a pentene- containing intermediate-boiling fraction C and a hexene-containing high-boiling fraction D by fractional distillation of the high-boiling fraction obtained from (b) and (e) a step of returning the fractions B and C to the step (a) and discharging the fraction D as a product.

    PRODUCTION OF OLEFIN
    2.
    发明专利
    PRODUCTION OF OLEFIN 失效

    公开(公告)号：JPH11322637A

    公开(公告)日：1999-11-24

    申请号：JP8406399

    申请日：1999-03-26

    Applicant: BASF AG

    Inventor： SCHWAB PETER DR ,  SCHULZ RALF DR ,  SCHULTZ MICHAEL ,  BREITSCHEIDEL BORIS DR ,  MEYER GERALD DR

    IPC: B01J23/36 ,  C07B61/00 ,  C07C6/02 ,  C07C7/163 ,  C07C11/06 ,  C07C41/06 ,  C10G35/06

    Abstract: PROBLEM TO BE SOLVED: To provide a process for the production of an olefin as a set of products by a 4C stream of a steam cracker or a refining apparatus. SOLUTION: This olefin production process comprises (A) a step to perform extractive distillation of butadiene from a 4C stream optionally using a butadiene-selective solvent, (B) a step to selectively hydrogenate butadiene and acetylene impurities in the 4C stream supplied from a steam cracker or a refiner or a stream of the step A and simultaneously isomerize at least a part of 1-butene to 2-butene, (C) a step to remove i-butene from the 4C stream and obtain an ether, (D) a step to remove oxygen-containing impurities from the 4C stream using an adsorbing material and (E) a step to perform the metathesis of butene in the 4C stream in two stages.

    PRODUCTION OF 5C- AND/OR 6C-OLEFIN
    3.
    发明专利
    PRODUCTION OF 5C- AND/OR 6C-OLEFIN 失效

    公开(公告)号：JP2001072612A

    公开(公告)日：2001-03-21

    申请号：JP2000207761

    申请日：2000-07-10

    Applicant: BASF AG

    Inventor： SCHWAB PETER DR ,  SCHULTZ MICHAEL ,  SCHULZ RALF DR ,  HUBER SYLVIA

    IPC: C07C6/04 ,  C07B61/00 ,  C07C7/00 ,  C07C7/10 ,  C07C7/148 ,  C07C7/163 ,  C07C7/177 ,  C07C11/06 ,  C07C11/10 ,  C07C11/107 ,  C07C11/113

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 5C- and/or 6C-olefins from 4C- olefins. SOLUTION: This method for producing 5C- and/or 6C-olefins from a 4C- olefinic starting substance flow comprises the following processes: (a) a metathesis reaction process where butene in the starting substance flow is converted into a mixture of 2C- to 6C-olefins with butane in the presence of a catalyst containing at least one of group VI b, VII b or VII transition metal compounds; (b) a process where the obtained reaction product flow is fractionated to discharge a fraction A comprising 2C- to 4C-olefins and butane, or comprising 2C- and 3C-olefins and to obtain a fraction comprising 4C- to 6C-olefins and butane; (c) a process for obtaining a fraction B comprising butene and butane, a fraction C comprising pentene and methylbutene and a fraction D comprising hexene and methylpentene by fractionation; and (d) a process for recirculating the whole or a part of the fraction B and/or the fraction C to the process (a) and for taking out the fraction D as a product.

    PRODUCTION OF PROPENE AND, WHEN NECESSARY, 1-BUTENE
    4.
    发明专利
    PRODUCTION OF PROPENE AND, WHEN NECESSARY, 1-BUTENE 失效

    公开(公告)号：JPH11286459A

    公开(公告)日：1999-10-19

    申请号：JP2137299

    申请日：1999-01-29

    Applicant: BASF AG

    Inventor： SCHWAB PETER DR ,  BREITSCHEIDEL BORIS DR ,  OOST CARSTEN ,  SCHULZ RALF DR ,  SCHULTZ MICHAEL

    IPC: B01J23/36 ,  B01J23/46 ,  C07B61/00 ,  C07C2/10 ,  C07C4/10 ,  C07C6/04 ,  C07C11/06 ,  C07C11/08 ,  C08F2/00

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound in high yield by subjecting butenes to the mutual reaction over a metathesis catalyst including a metal compound in the transition group in the element periodic table. SOLUTION: In the presence of a metathesis catalyst containing at least one of metal compounds in the transition groups VIb, VIIb, or VIII in the periodic table, 1-butene is allowed to react with butene-2, subsequently formed propene and 2-pentene are separated. Then, the 2-pentene is allowed to react with ethene in the presence of the metathesis catalyst, subsequently formed propene and 1-butene are separated. At least part of the 1-butene product is exhausted and/or at least part of the isolated 1-butene is isomerized over an isomerization catalyst to form 2-butene. Then, the remaining 1-butene, the formed 2-butene and a part of the unreacting C4 fraction are recycled thereby obtaining propene or a combination thereof with 1-butene.

    7.
    发明专利
    未知

    公开(公告)号：ES2185255T3

    公开(公告)日：2003-04-16

    申请号：ES99101727

    申请日：1999-02-10

    Applicant: BASF AG

    Inventor： SCHWAB PETER DR ,  BREITSCHEIDEL BORIS DR ,  OOST CARSTEN DR ,  SCHULZ RALF DR ,  SCHULZ MICHAEL DR

    IPC: B01J23/36 ,  B01J23/46 ,  C07B61/00 ,  C07C2/10 ,  C07C4/10 ,  C07C6/04 ,  C07C11/06 ,  C07C11/08 ,  C08F2/00

    Abstract: Preparation of propene and optionally 1-butene comprises converting butene isomers to propene isomers using metathesis catalyst and converting formed 2-pentene to propene and 1-butene, isolating and recycling the 2-butene fraction. Preparation of propene and optionally 1-butene comprises: (a) converting 1-butene and 2-butene in the presence of a metathesis catalyst containing group VIb, VIIb or VIII metals; (b) removing propene and 2-pentene formed; (c) converting the 2-pentene using ethene to propene and 1-butene in the presence of the metathesis catalyst in (a); (d) removing propene and 1-butene formed; and (e) discharging the 1-butene and partially isomerizing 1-butene to 2-butene in the presence of a catalyst and recycling the 1-butene and 2-butene with a part of the unreacted 4C-fraction from (a) to (a). An Independent claim is also included for the apparatus for carrying out the preparation of propene and 1-butene comprising a metathesis reactor (R01) connected to a distillation column (K101) for removing 2/3C low boiling, 4C middle boiling and 5C+ high boiling phases; column (K301) for removing ethene and propene; and reactor (R02) for reacting 2-pentene with ethene.

    9.
    发明专利
    未知

    公开(公告)号：ES2208187T3

    公开(公告)日：2004-06-16

    申请号：ES00114104

    申请日：2000-07-10

    Applicant: BASF AG

    Inventor： SCHWAB PETER DR ,  SCHULZ MICHAEL DR ,  SCHULZ RALF DR ,  HUBER SYLVIA DR

    IPC: C07C6/04 ,  C07B61/00 ,  C07C7/00 ,  C07C7/10 ,  C07C7/148 ,  C07C7/163 ,  C07C7/177 ,  C07C11/06 ,  C07C11/10 ,  C07C11/107 ,  C07C11/113

    Abstract: The production of 5C/6C olefins from a 4C olefin-containing product stream involves disproportionation of 1-, 2- and iso-butene on a Group VIb, VIIb or Sub-Group VIII metal-based catalyst followed by distillation to give a 4-6C fraction which is then distilled to give hexene and methylpentene as a high-boiling fraction. A process (A) for the production of 5C/6C olefins from 4C olefins involves: (a) disproportionation of 1-butene, 2-butene and isobutene in a 4C olefin product stream in presence of a disproportionation catalyst containing Group VIb, VIIb or Sub-Group VIII metal compound(s), to give a mixture of 2-6C olefins and butanes; (b) distillation to give a low-boiling fraction (A) comprising 2-3C olefins or 2-4C olefins and butanes, which is removed, and a high-boiling fraction consisting of 4-6C olefins and butanes; (c) distillation of the high-boiling fraction to give a low-boiling fraction (B; butenes and butanes), a middle fraction (C; pentene and methylbutene) and a high-boiling fraction (D; hexene and methylpentene), and (d) separation of (D) as product, with complete or partial return of fractions (B) and/or (C) to stage (a). An Independent claim is also included for a process (B) for the production of 5C/6C olefins and propene from steam cracker streams or refinery 4C streams, involving: (1) removal of butadiene and acetylenes by optional extraction with a butadiene-selective solvent and subsequent or alternative selective hydrogenation of butadienes and acetylenic impurities in the crude 4C fraction, to give a product containing n-butene and iso-butene; (2) removal of isobutene by reaction of the above product with an alcohol in presence of acid catalyst to give an ether, with separation of the ether and alcohol to give a product containing n-butene and possibly oxygenated impurities, and removal of the ether or re-cleavage for the production of pure isobutene by subsequent distillation with optional separation of entrained 3C, iso-4C and 5C hydrocarbons; (3) removal of oxygenated impurities on suitable adsorbers; and (4) disproportionation of the refined product (II) stream as in stages (a)-(d) above.

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