Method for Producing Linear Pentenenitrile
    71.
    发明申请
    Method for Producing Linear Pentenenitrile 审中-公开
    生产线性戊烯腈的方法

    公开(公告)号:US20080281120A1

    公开(公告)日:2008-11-13

    申请号:US10586470

    申请日:2005-01-27

    IPC分类号: C07C255/00

    摘要: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) distilling stream 5 to obtain a stream 6 as the bottom product which comprises 3-pentenenitrile and a stream 7 as the top product which comprises 2-methyl-3-butenenitrile.

    摘要翻译: 描述了制备3-戊烯腈的方法,其特征在于以下方法步骤:(a)在至少一种溶解或分散的异构化催化剂上异构化包含2-甲基-3-丁烯腈的反应物流,得到流1,其包含 至少一种异构化催化剂,2-甲基-3-丁烯腈,3-戊烯腈和(Z)-2-甲基-2-丁烯腈,(b)蒸馏物流1,得到作为顶部产物的物流2,其包含2-甲基 -3-丁烯腈,3-戊烯腈和(Z)-2-甲基-2-丁烯腈,以及作为底部产物的料流3,其包含至少一种异构化催化剂,(c)蒸馏物流2以获得物流4, 与流2相比,基于流2中的所有五烯丙烯的总和和作为底部产物的流5,与流2相比富含(Z)-2-甲基-2-丁烯腈的顶部产物与流2相比较 ,富含3-戊烯腈和2-甲基-3-丁烯腈,基于所有pentenenit (d)蒸馏流5以获得作为底部产物的料流6,其包含3-戊烯腈和作为顶部产物的料流7,其包含2-甲基-3-丁烯腈。

    Purification of caprolactam
    72.
    发明授权
    Purification of caprolactam 有权
    己内酰胺的纯化

    公开(公告)号:US07217818B2

    公开(公告)日:2007-05-15

    申请号:US10534802

    申请日:2003-11-11

    IPC分类号: C07D201/16

    CPC分类号: C07D201/16 C07D201/08

    摘要: A process for removing high boilers from crude caprolactam which comprises high boilers, caprolactam and in some cases low boilers, and which has been obtained by a) reacting 6-aminocapronitrile with water to give a reaction mixture b) removing ammonia and unconverted water from the reaction mixture to obtain crude caprolactam, which comprises c) feeding the crude caprolactam to a distillation apparatus to obtain a first substream via the top as a product and a second substream via the bottom, by setting the pressure in the distillation in such a way that the bottom temperature does not go below 170° C., and adjusting the second substream in such a way that the caprolactam content of the second substream is not less than 10% by weight, based on the entire second substream.

    摘要翻译: 一种从粗己内酰胺中除去高锅炉的方法,其包括高锅炉,己内酰胺,在某些情况下是低锅炉,并且通过以下方法获得:a)使6-氨基己腈与水反应得到反应混合物; b)除去氨和未转化的水 反应混合物以获得粗己内酰胺,其包括c)将粗己内酰胺加入到蒸馏装置中,通过顶部获得第一子流作为产物,通过底部通过设置第二子流,通过将蒸馏中的压力设定为使得 底部温度不低于170℃,并且调节第二子流,使得第二子流的己内酰胺含量基于整个第二子流不小于10重量%。

    Method for separating a homogeneous catalyst
    73.
    发明申请
    Method for separating a homogeneous catalyst 审中-公开
    分离均相催化剂的方法

    公开(公告)号:US20070034576A1

    公开(公告)日:2007-02-15

    申请号:US10561613

    申请日:2004-06-11

    IPC分类号: B01D61/00

    CPC分类号: C07F15/0073 C07F15/008

    摘要: A process for separating a mixture comprising a) a monoolefinically unsaturated compound which is obtainable by adding two terminal olefins which bear the functional groups required to prepare the monoolefinically unsaturated compound containing at least two functional groups, or a saturated compound obtained by hydrogenating such a compound, b) a compound which is obtainable by adding more than two of the terminal olefins mentioned in a) or a compound obtained by hydrogenating such a compound, and c) a compound which contains a transition metal, is homogeneous with respect to the mixture and is suitable as a catalyst for preparing a monoolefinically unsaturated compound by adding two terminal olefins which bear the functional groups required to prepare the monoolefinically unsaturated compound containing at least two functional groups, by means of a semipermeable membrane to obtain a permeate and a retentate in such a way that the weight ratio of component b) to component c) in the mixture fed to the semipermeable membrane is smaller than in the retentate.

    摘要翻译: 一种分离混合物的方法,该混合物包含a)单烯属不饱和化合物,其可以通过加入含有制备含有至少两个官能团的单烯属不饱和化合物所需的官能团的二末端烯烃,或通过氢化这种化合物获得的饱和化合物 b)通过添加a)中所述的两种以上的末端烯烃或通过氢化这种化合物得到的化合物得到的化合物,和c)含有过渡金属的化合物相对于混合物是均匀的, 通过加入具有制备含有至少两个官能团的单烯属不饱和化合物所需的官能团的二末端烯烃,通过半透膜以制备单烯属不饱和化合物,以获得渗透物和渗余物 组分b)与组分c)的重量比在mi中的方式 进料到半透膜的切口小于滞留物中的孔。

    Preparation of caprolactam
    77.
    发明授权
    Preparation of caprolactam 有权
    己内酰胺的制备

    公开(公告)号:US06683179B2

    公开(公告)日:2004-01-27

    申请号:US10258941

    申请日:2002-10-29

    IPC分类号: C07D20108

    CPC分类号: C07D201/08

    摘要: A process for the preparation of caprolactam is provided, wherein a) a mixture (I) containing 6-aminocapronitrile and water is reacted in the gas phase, in the presence of a catalyst, to give a mixture (II) containing caprolactam, ammonia, water, high-boiling components and low-boiling components, b) ammonia is then removed from the mixture (II) to give a mixture (III) containing caprolactam, water, high-boiling components and low-boiling components, c) water is then removed from the mixture (III) to give a mixture (IV) containing caprolactam, high-boiling components and low-boiling components, and d) a solid (V) containing caprolactam is then obtained from the mixture (IV) by crystallization, the proportion by weight of caprolactam in the solid (V) being greater than in the mixture (IV).

    摘要翻译: 提供了制备己内酰胺的方法,其中a)含有6-氨基己腈和水的混合物(I)在催化剂存在下在气相中反应,得到含己内酰胺,氨,水的混合物(II) ,高沸点组分和低沸点组分,b)然后从混合物(II)中除去氨,得到含有己内酰胺,水,高沸点组分和低沸点组分的混合物(III),c)然后将水 从混合物(III)中除去,得到含有己内酰胺,高沸点组分和低沸点组分的混合物(IV),然后通过结晶从混合物(IV)获得含有己内酰胺的固体(V),比例 的固体(V)中的己内酰胺的量大于混合物(IV)中的。

    Preparation of caprolactam
    78.
    发明授权
    Preparation of caprolactam 有权
    己内酰胺的制备

    公开(公告)号:US06677449B2

    公开(公告)日:2004-01-13

    申请号:US10258942

    申请日:2002-10-29

    IPC分类号: C07D20102

    CPC分类号: C07D201/08 C07D201/16

    摘要: A process for the preparation of caprolactam is provided, wherein a) a mixture (I) containing 6-aminocapronitrile and water is reacted in the liquid phase, in the presence of a catalyst, to give a mixture (II) containing caprolactam, ammonia, water, high-boiling components and low-boiling components, b) ammonia is then removed from the mixture (II) to give a mixture (III) containing caprolactam, water, high-boiling components and low-boiling components, c) water is then removed from the mixture (III) to give a mixture (IV) containing caprolactam, high-boiling components and low-boiling components, and d) a solid (V) containing caprolactam is then obtained from the mixture (IV) by crystallization, the proportion by weight of caprolactam in the solid (V) being greater than in the mixture (IV).

    摘要翻译: 提供了制备己内酰胺的方法,其中a)含有6-氨基己腈和水的混合物(I)在液相中在催化剂存在下反应,得到含有己内酰胺,氨,水的混合物(II) ,高沸点组分和低沸点组分,b)然后从混合物(II)中除去氨,得到含有己内酰胺,水,高沸点组分和低沸点组分的混合物(III),c)然后将水 从混合物(III)中除去,得到含有己内酰胺,高沸点组分和低沸点组分的混合物(IV),然后通过结晶从混合物(IV)获得含有己内酰胺的固体(V),比例 的固体(V)中的己内酰胺的量大于混合物(IV)中的。