11.
    发明专利
    未知

    公开(公告)号:DE10133788A1

    公开(公告)日:2003-02-06

    申请号:DE10133788

    申请日:2001-07-16

    Applicant: BASF AG

    Abstract: The invention relates to a method for the separation of ammonia from a mixture which contains ammonia and whose boiling point in an ammonia-free state is more than 50 DEG C higher than the boiling point of pure ammonia, characterized in that said method comprises n stages, n being a natural number of at least 2, wherein a) said mixture is fed to stage 1; b) at each stage m, m being a natural number of 1 to n-1, part of the ammonia is separated from the educt mixture fed from stage 1 at a pressure Pm by means of evaporation in order to obtain a product mixture which has an ammonia content corresponding to pressure Pm and temperature tm, and gaseous ammonia, c) the product mixture obtained in stage m is used in step m+1 as an educt mixture, with the exception of stage n, according to step b), d) in step n, the ammonia is separated at a pressure Pn and temperature tn either partially or fully from the educt mixture fed from stage n-1 by means of evaporation in order to obtain a product and gaseous ammonia, each pressure Pm being greater than Pm+1.

    PROCESO PARA PREPARAR PROPENO DE CORRIENTES DE ALIMENTACION RICAS EN 2-BUTENO-E ISOBUTENO.

    公开(公告)号:MX2007010286A

    公开(公告)日:2008-04-10

    申请号:MX2007010286

    申请日:2006-02-24

    Applicant: BASF AG

    Abstract: La invencion se relaciona con un metodo para producir un flujo de producto que consiste sustancialmente de eteno (flujo de C2=), un flujo de producto que consiste substancialmente de propeno (flujo C3=), un flujo de producto que consiste substancialmente de isobuteno y, opcionalmente de otras olefinas que tiene 4 atomos de carbono (flujo C4=) y un flujo de producto que consiste substancialmente de 2-metil-2-buteno y, opcionalmente de 2-buteno (flujo C5=), y opcionalmente otro flujo de producto que contiene otros hidrocarburos (flujo Cx), que consiste opcionalmente de varios flujos parciales individuales. El metodo inventivo comprende un paso de metatesis que consiste en llevar un flujo de hidrocarburo de C4 que contiene cuando menos 15% en peso de 2-buteno, por lo menos 5% en peso de isobuteno y cuando menos 5% en peso de 1-buteno (flujo de alimentacion) a contacto con eteno en presencia de un catalizador de metatesis usual, el flujo de hidrocarburo asi formado se separa en los flujos C2=, C3=, C4=, y opcionalmente Cx y el flujo C5= se recicla parcial o totalmente en la etapa de metatesis.

    14.
    发明专利
    未知

    公开(公告)号:BRPI0413792A

    公开(公告)日:2006-11-07

    申请号:BRPI0413792

    申请日:2004-09-24

    Applicant: BASF AG

    Abstract: The invention relates to a process for preparing methylamines by gas-phase reaction of methanol and ammonia as starting materials at a pressure in the range from 15 to 30 bar in the presence of heterogeneous catalyst. The starting materials are vaporized in one or more heat exchangers (1, 2, 3), superheated to produce a feed gas stream and subsequently fed into a reactor (4), with the mixing of the starting materials being able to be carried out in the feed stream to one of the heat exchangers (1, 2, 3) or at any desired position in a heat exchanger (1, 2, 3). A product gas stream comprising monomethylamine, dimethylamine and trimethylamine and also reaction by-products is taken off from the reactor (4). To control the reactor inlet temperature of the starting materials to a temperature in the range from 360° C. to 370° C., all or some of the feed gas stream or the product gas stream is passed through an adjustable valve (5) in order to vary the pressure and thus the condensation temperature.

    16.
    发明专利
    未知

    公开(公告)号:DE102004009803A1

    公开(公告)日:2005-09-15

    申请号:DE102004009803

    申请日:2004-02-28

    Applicant: BASF AG

    Abstract: Process for producing a supported catalyst which comprises at least 75% by weight of Al 2 O 3 , whose proportion of Al 2 O 3 in the delta or theta modification is, based on the proportion of Al 2 O 3 , at least 1% and which comprises a rhenium compound and, if appropriate, a promoter as active component (A), which comprises a) converting a customary support (S) which comprises at least 75% by weight of Al 2 O 3 and to which a promoter may, if appropriate, have been applied is converted into a modified support (S) whose proportion of Al 2 O 3 in the delta or theta modification is, based on the proportion of Al 2 O 3 , at least 1% by calcining the customary support (S) at a temperature of from 750 to 1100°C., b) producing a supported catalyst precursor from the modified support (S) by applying the active component (A) comprising the rhenium compound to the modified support (S) and c) calcining the supported catalyst precursor at a temperature of from 500 to 750° C.

    PROCESO DE METATESIS QUE COMPRENDE LA PURIFICACION DE LOS MATERIALES DE INICIO.

    公开(公告)号:MX2007010290A

    公开(公告)日:2008-03-04

    申请号:MX2007010290

    申请日:2006-02-24

    Applicant: BASF AG

    Abstract: La invencion se refiere a un proceso para producir un compuesto o una mezcla de compuestos que tienen un doble enlace C-C o triple enlace C-C no aromatico (compuesto A) a partir de otro compuesto o una mezcla de otros compuestos que tienen un doble enlace C-C o triple enlace C-C no aromatico (compuesto B), que comprende I. una etapa (I) que consiste en liberar al compuesto (B) de impurezas poniendo en contacto dichas impurezas con un agente de adsorcion que comprende al menos 3% en peso de oxido de aluminio y activandolos a temperaturas de 450 a 1000 degree C (agente de adsorcion X) y II. una etapa (II), que consiste en eliminar las impurezas del compuesto (B) de acuerdo con la etapa (I) y poniendo dicho compuesto B en contacto con un catalizador de metatesis bajo condiciones usuales para una reaccion de metatesis.

    19.
    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.

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