METHOD FOR PRODUCING 3-PENTENENITRILE BY MEANS OF THE HYDROCYANATION OF 1,3-BUTADIENE

    公开(公告)号:US20090247779A1

    公开(公告)日:2009-10-01

    申请号:US12376731

    申请日:2007-08-01

    IPC分类号: C07C253/10

    CPC分类号: C07C253/10 C07C255/07

    摘要: A method for producing 3-pentenenitrile by means of the hydrocyanation of 1,3-butadiene, which comprises the following process steps: (b′) distillation of 1,3-butadiene comprising water, 1- and 2-butenes and a stabilizer in a distillation apparatus K4 to obtain a stream 15 as the bottom product, which comprises dried 1,3-butadiene, 1- and 2-butenes and the stabilizer, and a stream 16 as the top product, which comprises an azeotropic 1,3-butadiene/water mixture, condensation of the stream 16 in a condenser W, transfer of the resulting condensate (stream 17) into a phase separation apparatus, recycling of the upper liquid phase (stream 18) consisting of 1,3-butadiene as reflux to the column K4, and discharge of the lower liquid aqueous phase (stream 19), (a) reaction of stream 15 in a reactor R1 with hydrogen cyanide over at least one catalyst (stream 6d) to obtain a stream 1 which comprises 3-pentenenitrile, 2-methyl-3-butenenitrile, the at least one catalyst, unconverted 1,3-butadiene, and 1- and 2-butenes, with or without residues of unconverted hydrogen cyanide, (b) distillation of stream 1 in a distillation apparatus K1 to obtain a stream 2 as the top product, which comprises the predominant portion of the 1,3-butadiene from stream 1, and to obtain a stream 3 as the bottom product, which comprises 3-pentenenitrile, the at least one catalyst, 2-methyl-3-butenenitrile, 1- and 2-butenes and the remaining proportion of the 1,3-butadiene from stream 1 which has not been removed in stream 2, (c) distillation of stream 3 in a distillation apparatus K2 to obtain a stream 5 at a side draw of the column, which 3-pentenenitrile and 2-methyl-3-butenenitrile, a stream 6 as the bottom product, which comprises the at least one catalyst, and a stream 4 as the top product, (d) compression of stream 4 in the compressor V1, discharge of a gaseous substream 4b which comprises 1- and 2-butenes, transfer of the compressed stream 4a into the condenser W1, combined cond. With stream 2 from b) in combined condensation of this stream 2 from b) and transfer of the condensate as stream 9, partly as reflux to the column K1 (stream 9b), partly as return stream into the reactor R1 (stream 9a), and (e) distillative separation of stream 5 to obtain 3-pentenenitrile and 2-methyl-3-butenenitrile.

    Method for Obtaining Cyclododecatriene by Evaporation
    3.
    发明申请
    Method for Obtaining Cyclododecatriene by Evaporation 有权
    通过蒸发获得环十二碳三烯的方法

    公开(公告)号:US20080217158A1

    公开(公告)日:2008-09-11

    申请号:US11994122

    申请日:2006-06-30

    IPC分类号: B01D1/02 B01D1/26 B01D1/28

    CPC分类号: C07C7/04 C07C13/277

    摘要: Process for recovering cyclododecatriene (CDT) from a solution comprising CDT and high boilers such as deactivated catalyst and polymers, which comprises feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.

    摘要翻译: 从包括CDT和高沸点剂如失活催化剂和聚合物的溶液中回收环十二碳三烯(CDT)的方法,其包括将溶液进料到预热器中并加热,随后通过下游压力维持装置将其减压并将所得的两相 混合物进入螺旋管蒸发器,并且通过部分蒸发降低液相的CDT含量并排出具有增加的CDT浓度的气态产物流。

    Method for obtaining cyclododecatriene by evaporation
    4.
    发明授权
    Method for obtaining cyclododecatriene by evaporation 有权
    通过蒸发得到环十二碳三烯的方法

    公开(公告)号:US07959766B2

    公开(公告)日:2011-06-14

    申请号:US11994122

    申请日:2006-06-30

    IPC分类号: B01D3/04 C07C7/04 C07C13/277

    CPC分类号: C07C7/04 C07C13/277

    摘要: Process for recovering cyclododecatriene (CDT) from a solution containing CDT and high boilers such as deactivated catalyst and polymers, which includes feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.

    摘要翻译: 从含有CDT和高沸点物如失活催化剂和聚合物的溶液中回收环十二碳三烯(CDT)的方法,其包括将溶液进料到预热器中并加热,随后通过下游压力维持装置将其减压并将所得的两相 混合物进入螺旋管蒸发器,并且通过部分蒸发降低液相的CDT含量并排出具有增加的CDT浓度的气态产物流。

    CATALYST AND PROCESS FOR HYDROGENATING CARBONYL COMPOUNDS
    6.
    发明申请
    CATALYST AND PROCESS FOR HYDROGENATING CARBONYL COMPOUNDS 有权
    催化剂和加氢处理碳化合物

    公开(公告)号:US20100056364A1

    公开(公告)日:2010-03-04

    申请号:US12608125

    申请日:2009-10-29

    IPC分类号: B01J21/18

    摘要: A process for hydrogenating an organic compound which has at least one carbonyl group, in which the organic compound is hydrogenated in the presence of a shaped article which contains (i) an oxidic material comprising copper oxide, aluminum oxide and lanthanum oxide, and (ii) powdered metallic copper, copper flakes, powdered cement, graphite or a mixture thereof, is provided.

    摘要翻译: 氢化具有至少一个羰基的有机化合物的方法,其中有机化合物在成型制品存在下氢化,所述成型制品包含(i)包含氧化铜,氧化铝和氧化镧的氧化物质和(ii )粉末状金属铜,铜薄片,水泥粉末,石墨或其混合物。

    METHOD FOR PRODUCING HETEROAROMATIC ALCOHOLS
    7.
    发明申请
    METHOD FOR PRODUCING HETEROAROMATIC ALCOHOLS 审中-公开
    生产异构醇的方法

    公开(公告)号:US20090043102A1

    公开(公告)日:2009-02-12

    申请号:US12063316

    申请日:2006-08-02

    IPC分类号: C07D213/62

    CPC分类号: C07D213/30

    摘要: A process for preparing heteroaromatic alcohols by catalytically hydrogenating heteroaromatic carboxylic acids or esters thereof by hydrogenating with hydrogen in the presence of a ruthenium-phosphine complex in an organic solvent.

    摘要翻译: 通过在有机溶剂中在钌 - 膦配合物的存在下用氢气氢化杂芳族羧酸或其酯来制备杂芳族醇的方法。

    Moulded Catalyst Bodies and Method for Hydrogenation of Carbonyl Compounds
    8.
    发明申请
    Moulded Catalyst Bodies and Method for Hydrogenation of Carbonyl Compounds 有权
    成型催化剂体和羰基化合物氢化方法

    公开(公告)号:US20080299390A1

    公开(公告)日:2008-12-04

    申请号:US11571766

    申请日:2005-07-07

    摘要: The invention relates to a method for hydrogenation of an organic compound comprising at least one carbonyl group, whereby the organic compound is brought into contact with a moulded body in the presence of hydrogen. Said body may be produced by a method in which (i) an oxidic material is prepared, comprising copper oxide, aluminium oxide, and at least one oxide of lanthanum, tungsten, molybdenum, titanium, or zirconium, followed by (ii) addition of powdered metallic copper, copper platelets, powdered cement, graphite, mixtures or a mixture thereof with graphite to the oxidic material and (iii) moulding the mixture from (ii) to give a moulded body, characterised in that the moulded body is in the form of catalyst tablets or catalyst extrudates with a diameter d and/or height h

    摘要翻译: 本发明涉及一种包含至少一个羰基的有机化合物的氢化方法,其中有机化合物在氢气存在下与成型体接触。 所述体可以通过以下方法制备,其中(i)制备氧化物材料,其包含氧化铜,氧化铝和至少一种镧,钨,钼,钛或锆的氧化物,然后加入(ⅱ) 粉末状金属铜,铜片,粉末水泥,石墨,与石墨的混合物或其混合物与氧化物材料,(iii)从(ii)模塑混合物得到成型体,其特征在于成型体为 具有直径d和/或高度h <2.5mm的催化剂片剂或催化剂挤出物,直径d <2.5mm的催化剂珠粒或具有泡孔直径rz <2.5mm的催化剂蜂窝体。