12.
    发明专利
    未知

    公开(公告)号:DE502004003484D1

    公开(公告)日:2007-05-24

    申请号:DE502004003484

    申请日:2004-05-06

    Applicant: BASF AG

    Abstract: A process for preparing a C 4 - to C 12 -olefin (olefin A) from another C 4 - to C 12 -olefin (olefin B), wherein olefin (A) and olefin (B) differ with regard to the position of the double bond, and wherein a gaseous mixture comprising olefin (B) and from 0.01 to 10% by weight, based on the total amount of hydrocarbon compounds in this mixture, of a compound having a dipole moment of from 0.5 to 5 debye (compound P) is contacted with a basic catalyst at a temperature of from 200 to 700° C.

    13.
    发明专利
    未知

    公开(公告)号:AT359251T

    公开(公告)日:2007-05-15

    申请号:AT04739141

    申请日:2004-05-06

    Applicant: BASF AG

    Abstract: A process for preparing a C 4 - to C 12 -olefin (olefin A) from another C 4 - to C 12 -olefin (olefin B), wherein olefin (A) and olefin (B) differ with regard to the position of the double bond, and wherein a gaseous mixture comprising olefin (B) and from 0.01 to 10% by weight, based on the total amount of hydrocarbon compounds in this mixture, of a compound having a dipole moment of from 0.5 to 5 debye (compound P) is contacted with a basic catalyst at a temperature of from 200 to 700° C.

    14.
    发明专利
    未知

    公开(公告)号:DE10311139A1

    公开(公告)日:2004-09-23

    申请号:DE10311139

    申请日:2003-03-14

    Applicant: BASF AG

    Abstract: Preparation of 1-butene from a mixture of 1-butene and 2-butene involves feeding a hydrocarbon feed stream and 1- and 2-butene recycle stream into a distillation column and taking off the streams, where the 1-butene content of the stream is higher than that of the hydrocarbon feed stream, and producing the hydrocarbon recycle stream by bringing the feed stream into contact with an isomerization catalyst to convert 2-butenes into 1-butene. Preparation of a 1-butene-containing 4C hydrocarbon stream (1-C4= stream) from a 1-butene- and 2-butene-containing 4C hydrocarbon stream (1- and 2-C4= feed stream) whose 1-butene content is lower than that of the 1-C4= stream, by: (a) feeding the 1- and 2-C4= feed stream and a 1-butene- and 2-butene-containing C4 hydrocarbon stream (1- and 2-C4= recycle stream) whose 1-butene content is lower than that of the 1-C4= stream and which has been produced by step (b) below into a distillation column and taking off the 1-C4= stream and a 2-butene-containing 4C hydrocarbon stream (2-C4= stream) whose 1-butene content is lower than that of the 1- and 2-C4= feed stream and of the 1- and 2-C4= recycle stream from the distillation column; and (b) producing the 1- and 2-C4= recycle stream from the 2-C4= stream by bringing the 2-C4= stream into contact with an isomerization catalyst which catalyzes the conversion of 2-butenes into 1-butene in a reaction zone.

    16.
    发明专利
    未知

    公开(公告)号:AT384112T

    公开(公告)日:2008-02-15

    申请号:AT05770210

    申请日:2005-08-06

    Applicant: BASF AG

    Abstract: Processes for preparing a C5 aldehyde and propene are disclosed, the processes comprising: (a) providing a feedstream, the feedstream comprising butane, 1-butene, 2-butene and 1,3-butadiene, the 1,3-butadiene present in the feedstream in an amount up to 1000 ppm; (b) contacting the feedstream with hydrogen and carbon monoxide in the presence of a hydroformylation catalyst to form a 2-butene-rich butane stream and a C5 aldehyde; (c) separating the 2-butene-rich butane stream and the C5 aldehyde; and (d) contacting the 2-butene-rich butane stream with ethene in the presence of a metathesis catalyst to form a propene-containing hydrocarbon stream.

    Preparation of propene from 2-butene and isobutene rich feed stream comprises contacting 4 carbon hydrocarbon stream with ethene in a metathesis step, and separating the streams

    公开(公告)号:DE102005009665A1

    公开(公告)日:2006-08-31

    申请号:DE102005009665

    申请日:2005-02-28

    Applicant: BASF AG

    Abstract: Preparation of an ethene stream (C 2), a propene stream (C 3), an isobutene and optionally a 4C-olefin stream (C 4), a 2-methyl-2-butene and optionally 2-butene stream (C 5), and optionally other hydrocarbons containing stream (C x), optionally several separate components containing streams, comprises contacting a C4-hydrocarbon stream with ethene in a metathesis step; and separating the streams. Preparation of an ethene stream (C 2), a propene stream (C 3), an isobutene and optionally 4C olefin stream (C 4), a 2-methyl-2-butene and optionally 2-butene stream (C 5), and optionally other hydrocarbons containing stream (C x), optionally several separate components containing streams, comprises: (A) a metathesis step, in which a C4-hydrocarbon stream, containing at least 2-butene (15 wt.%), at least isobutene (5 wt.%) and 1-butene (less than 5 wt.%) (feed stream), is contacted with ethene in the presence of usual metathesis catalysts; and (B) separation of the streams (C2, C3, C4 and optionally Cx) from the obtained hydrocarbon stream, with the stream (C5) completely or partially led back to the metathesis step. Independent claims are included for methods for preparing feed stream, comprising subjecting naphtha or other hydrocarbon compounds to steam cracking or fluid catalytic cracking (FCC)-process, or dehydrating butane containing hydrocarbon stream and followed by purifying the obtained C4-olefin-mixture containing isobutene, 2-butene, butadiene, optionally butyne and optionally 1-butene, and removing the obtained stream of C4-olefin-mixture; and removing butadiene and butyne by means of selective hydrogenation to butene or butane hydride, or butadiene and butyne by extractive distillation of the obtained C4-olefin-mixture (raffinate I), where the content of 1,3-butadiene is at a maximum of 1000 wt. ppm.

    19.
    发明专利
    未知

    公开(公告)号:DE10350044A1

    公开(公告)日:2005-05-25

    申请号:DE10350044

    申请日:2003-10-27

    Applicant: BASF AG

    Abstract: A process for preparing 1-butene, which includes nonoxidatively, catalytically dehydrogenating n-butane to obtain a product gas stream of n-butane, 1-butene, 2-butene, butadiene, hydrogen, and secondary constituents; removing hydrogen and the secondary constituents to obtain a C4 product gas stream; separating the C4 product stream into a recycle stream of n-butane and a stream of 1-butene, 2-butene and butadiene by extractive distillation, and recirculating the recycle stream to the dehydrogenation zone; introducing the 1 -butene, 2-butene and butadiene stream into a selective hydrogenation zone and selective hydrogenation of butadiene to 1-butene and/or 2-butene to obtain a stream of 1-butene and 2-butene; introducing the 1-butene and 2-butene stream, and a circulating stream of 1-butene and 2-butene into a distillation zone and isolation of a product stream; and introducing the 2-butene-containing stream into an isomerization zone to obtain a circulating stream of 1-butene and 2-butene, and recirculating the circulating stream to the distillation zone.

    20.
    发明专利
    未知

    公开(公告)号:DE10321523A1

    公开(公告)日:2004-12-02

    申请号:DE10321523

    申请日:2003-05-14

    Applicant: BASF AG

    Abstract: A process for preparing a C 4 - to C 12 -olefin (olefin A) from another C 4 - to C 12 -olefin (olefin B), wherein olefin (A) and olefin (B) differ with regard to the position of the double bond, and wherein a gaseous mixture comprising olefin (B) and from 0.01 to 10% by weight, based on the total amount of hydrocarbon compounds in this mixture, of a compound having a dipole moment of from 0.5 to 5 debye (compound P) is contacted with a basic catalyst at a temperature of from 200 to 700° C.

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