Method for Producing Linear Pentenenitrile
    43.
    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。

    Method for producing propylene oxide
    44.
    发明授权
    Method for producing propylene oxide 有权
    生产环氧丙烷的方法

    公开(公告)号:US07378536B2

    公开(公告)日:2008-05-27

    申请号:US10553441

    申请日:2004-04-16

    IPC分类号: C07D301/03

    CPC分类号: C07D301/12

    摘要: Process for preparing propylene oxide, which comprises at least the steps (iii) and (iv) (iii) separating off propylene oxide from a mixture (M1) comprising propylene oxide and at least one solvent by distillation in a distillation column, giving a bottom stream and a vapor stream consisting essentially of propylene oxide; (iv) compressing the vapor stream obtained in (iii) by means of at least one compressor to give a compressed vapor.

    摘要翻译: 制备环氧丙烷的方法,其至少包括步骤(iii)和(iv)(iii)通过在蒸馏塔中蒸馏从包含环氧丙烷和至少一种溶剂的混合物(M1)中分离环氧丙烷,得到底部 气流和基本上由环氧丙烷组成的蒸气流; (iv)通过至少一个压缩机压缩(iii)中获得的蒸气流,得到压缩蒸气。

    Purification of caprolactam
    46.
    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
    47.
    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。

    Method for producing an alkene oxide
    48.
    发明申请
    Method for producing an alkene oxide 失效
    烯烃生产方法

    公开(公告)号:US20060276662A1

    公开(公告)日:2006-12-07

    申请号:US10553516

    申请日:2004-04-16

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12

    摘要: Process for preparing an alkene oxide, which comprises at least the steps (i), (ii) and (v): (i) providing a stream S1 comprising compressed, liquid alkene; (ii) depressurizing at least part of the stream S1 with absorption of heat and with at least partial vaporization of the liquid alkene; (v) reacting the alkene obtained in (ii) with a hydroperoxide in the presence of at least one solvent and at least one catalyst to give a mixture comprising alkene oxide and the solvent or solvents.

    摘要翻译: 制备氧化烯的方法,其至少包括步骤(i),(ii)和(v):(i)提供包含压缩的液体烯烃的料流S1; (ii)吸收热量并至少部分汽化液态烯烃使至少部分流S1减压; (v)使(ii)中获得的烯烃与至少一种溶剂和至少一种催化剂存在下的氢过氧化物反应,得到包含烯烃氧化物和溶剂或溶剂的混合物。