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    Process for the epoxidation of an olefin with improved energy balance
    1.
    发明授权
    Process for the epoxidation of an olefin with improved energy balance 有权
    具有改善的能量平衡的烯烃的环氧化方法

    公开(公告)号：US08134018B2

    公开(公告)日：2012-03-13

    申请号：US11814110

    申请日：2006-01-09

    申请人： Hans-Georg Goebbel ,  Henning Schultz ,  Peter Schultz ,  Renate Patrascu ,  Malte Schulz ,  Meinolf Weidenbach

    发明人： Hans-Georg Goebbel ,  Henning Schultz ,  Peter Schultz ,  Renate Patrascu ,  Malte Schulz ,  Meinolf Weidenbach

    IPC分类号： C07D301/12

    CPC分类号： C07D301/12 ,  Y02P20/582

    摘要： The invention relates to a process for the epoxidation of an olefin comprising (a) reacting the olefin with hydrogen peroxide in the presence of methanol as solvent in at least two reaction stages to obtain a mixture (M-a) comprising olefin oxide, unreacted olefin, methanol and water, wherein between at least two reaction stages, olefin oxide is separated by distillation; (b) separating unreacted olefin from the mixture (M-a) by distillation to obtain a mixture (M-bi) comprising at least 80 wt.-% of olefin and a mixture (M-bii) comprising methanol, water and at least 7 wt.-% of olefin oxide; (c) separating olefin oxide from the mixture (M-bii) in at least one distillation stage to obtain a mixture (M-ci) comprising at least 99 wt.-% of olefin oxide and a mixture (M-cii) comprising water and at least 55 wt.-% of methanol; (d) separating methanol from the mixture (M-cii) in at least one distillation stage to obtain a mixture (M-di) comprising at least 85 wt.-% of methanol and up to 10 wt.-% of water, and a mixture (M-dii) comprising at least 90 wt.-% of water; wherein a vapor top stream (Td) obtained from at least one distillation column used in (d), said vapor top stream (Td) comprising at least 85 wt.-% methanol, is used to operate at least partially at least one vaporizer used in at least one distillation column used in at least one of stages (a), (b) and (c).

    摘要翻译： 本发明涉及烯烃的环氧化方法，其包括（a）在至少两个反应阶段中在甲醇作为溶剂的存在下使烯烃与过氧化氢反应，以获得包含烯烃氧化物，未反应的烯烃，甲醇的混合物（Ma） 和水，其中在至少两个反应阶段之间，通过蒸馏分离烯烃氧化物; （b）通过蒸馏从混合物（Ma）中分离未反应的烯烃，得到包含至少80重量％的烯烃和包含甲醇，水和至少7重量％的烯烃的混合物（M-bii）的混合物（M-bi） .-％的烯烃氧化物; （c）在至少一个蒸馏阶段从所述混合物（M-bii）分离烯烃氧化物以获得包含至少99重量％的烯烃氧化物的混合物（M-ci）和包含水的混合物（M-cii） 和至少55重量％的甲醇; （d）在至少一个蒸馏阶段中从混合物（M-cii）中分离甲醇以获得包含至少85重量％的甲醇和至多10重量％的水的混合物（M-di），以及 包含至少90重量％的水的混合物（M-dii） 其中从（d）中使用的至少一个蒸馏塔获得的蒸汽顶部流（Td），所述蒸气顶部流（Td）包含至少85重量％的甲醇，用于至少部分地使用至少一个使用的蒸发器 在（a），（b）和（c）中的至少一个中使用的至少一个蒸馏塔中。

    Purification of propylene oxide resulting from epoxidation of propylene with hydrogen peroxide
    2.
    发明授权
    Purification of propylene oxide resulting from epoxidation of propylene with hydrogen peroxide 有权
    由丙烯与过氧化氢环氧化产生的环氧丙烷的纯化

    公开(公告)号：US07594979B2

    公开(公告)日：2009-09-29

    申请号：US10541171

    申请日：2004-03-04

    申请人： Renate Patrascu ,  Sabrina Astori ,  Meinolf M. Weidenbach

    发明人： Renate Patrascu ,  Sabrina Astori ,  Meinolf M. Weidenbach

    IPC分类号： B01D3/38 ,  B01D3/42 ,  C07D301/32

    CPC分类号： C07D301/32 ,  B01D3/38 ,  B01D3/40 ,  Y10S203/20

    摘要： A process of separating a purified propylene oxide from a crude epoxidation product produced, preferably, in an epoxidation reaction of propylene with hydrogen peroxide. The process involves removing bulk water, bulk methanol, and unreacted propylene from the crude epoxidation product and thereafter subjecting the resulting propylene oxide product to extractive distillation with water as an extraction solvent. Under distillation conditions, including a bottoms temperature of greater than about 55° C. and less than about 75° C., an overhead or side-cut distillate stream containing a purified propylene oxide is obtained with low yield loss of propylene oxide to propylene glycols and other glycol heavies. The purified propylene oxide can be further purified in a finishing distillation to obtain propylene oxide meeting commercial grade purity requirements.

    摘要翻译： 从粗制环氧化产物中分离纯化的环氧丙烷的方法，优选在丙烯与过氧化氢的环氧化反应中制备。 该方法包括从粗环氧化产物中除去大量水，大量甲醇和未反应的丙烯，然后将所得环氧丙烷产物用水萃取溶剂进行萃取蒸馏。 在蒸馏条件下，包括塔底温度大于约55℃且小于约75℃，得到含有纯化环氧丙烷的塔顶馏分或侧馏分馏分料流，其中丙烯氧化物对丙二醇的低产率损失 和其他二醇重物。 纯化的环氧丙烷可以在精馏蒸馏中进一步纯化，得到符合商业级纯度要求的环氧丙烷。

    PROCESS FOR PRODUCING EPOXIDES
    4.
    发明申请
    PROCESS FOR PRODUCING EPOXIDES 有权
    生产环氧化物的方法

    公开(公告)号：US20100029958A1

    公开(公告)日：2010-02-04

    申请号：US12508435

    申请日：2009-07-23

    申请人： William W. Fan ,  Christian D. Kneupper ,  Sascha Noormann ,  Renate Patrascu

    发明人： William W. Fan ,  Christian D. Kneupper ,  Sascha Noormann ,  Renate Patrascu

    IPC分类号： C07D301/24

    CPC分类号： C07D301/26 ,  B01D3/009 ,  Y02P20/127

    摘要： A process for producing epoxides, the process including: (a) feeding at least one aqueous alkali and at least one halohydrin to a reactive distillation column; (b) concurrently in the reactive distillation column: (i) reacting at least a portion of the halohydrin with the alkali to form an epoxide; and (ii) stripping water and the epoxide from a basic aqueous residue; (c) recovering the water and the epoxide from the reactive distillation column as an overheads fraction; and, (d) condensing and phase separating the overheads fraction at a temperature of 50° C. or less to form an organic overheads fraction including the epoxide and an aqueous overheads fraction including water.

    摘要翻译： 一种制备环氧化物的方法，该方法包括：（a）将至少一种碱金属和至少一种卤代醇进料至反应性蒸馏塔; （b）在反应蒸馏塔中同时进行：（i）使至少一部分卤代醇与碱反应形成环氧化物; 和（ii）从碱性含水残余物中除去水和环氧化物; （c）从反应蒸馏塔中回收水和环氧化物作为塔顶馏分; 和（d）在50℃或更低的温度下冷凝和相分离塔顶馏分以形成包括环氧化物的有机塔顶馏分和包含水的塔顶馏分馏分。

    Separation of Propylene Oxide from a Mixture Comprising Propylene Oxide and Methanol
    5.
    发明申请
    Separation of Propylene Oxide from a Mixture Comprising Propylene Oxide and Methanol 有权
    从包含环氧丙烷和甲醇的混合物中分离出环氧丙烷

    公开(公告)号：US20090118523A1

    公开(公告)日：2009-05-07

    申请号：US11631843

    申请日：2005-07-06

    申请人： Hans-Georg Gobbel ,  Henning Schultz ,  Peter Schultz ,  Renate Patrascu ,  Malte Schultz ,  Meinolf Weidenbach

    发明人： Hans-Georg Gobbel ,  Henning Schultz ,  Peter Schultz ,  Renate Patrascu ,  Malte Schultz ,  Meinolf Weidenbach

    IPC分类号： C07D301/32

    CPC分类号： C07D301/32 ,  C07D301/12

    摘要： A method of separating propylene oxide from a mixture (M) comprising propylene oxide and methanol, said method comprising: (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing an extracting solvent into said extractive distillation column; (iii) distilling propylene oxide overhead from said extractive distillation column as top stream; (iv) withdrawing a bottoms stream from said extractive distillation column; (v) compressing the top stream obtained overhead in (iii) by means of at least one compressor to give a compressed vapor.

    摘要翻译： 一种从包含环氧丙烷和甲醇的混合物（M）中分离环氧丙烷的方法，所述方法包括：（i）将所述混合物（M）引入萃取蒸馏塔; （ii）另外将萃取溶剂引入所述​​萃取蒸馏塔中; （iii）从所述萃取蒸馏塔顶部馏出环氧丙烷作为顶部流; （iv）从所述萃取蒸馏塔中取出塔底物​​流; （v）通过至少一个压缩机压缩在（iii）中获得的塔顶馏出物的顶部流以产生压缩蒸汽。

    Process for producing epoxides
    8.
    发明授权
    Process for producing epoxides 有权
    环氧化物生产工艺

    公开(公告)号：US07982061B2

    公开(公告)日：2011-07-19

    申请号：US12508435

    申请日：2009-07-23

    申请人： William W. Fan ,  Christian D. Kneupper ,  Sascha Noormann ,  Renate Patrascu

    发明人： William W. Fan ,  Christian D. Kneupper ,  Sascha Noormann ,  Renate Patrascu

    IPC分类号： C07D301/24

    CPC分类号： C07D301/26 ,  B01D3/009 ,  Y02P20/127

    摘要： A process for producing epoxides, the process including: (a) feeding at least one aqueous alkali and at least one halohydrin to a reactive distillation column; (b) concurrently in the reactive distillation column: (i) reacting at least a portion of the halohydrin with the alkali to form an epoxide; and (ii) stripping water and the epoxide from a basic aqueous residue; (c) recovering the water and the epoxide from the reactive distillation column as an overheads fraction; and, (d) condensing and phase separating the overheads fraction at a temperature of 50° C. or less to form an organic overheads fraction including the epoxide and an aqueous overheads fraction including water.

    摘要翻译： 一种制备环氧化物的方法，该方法包括：（a）将至少一种碱金属和至少一种卤代醇进料至反应性蒸馏塔; （b）在反应蒸馏塔中同时进行：（i）使至少一部分卤代醇与碱反应形成环氧化物; 和（ii）从碱性含水残余物中除去水和环氧化物; （c）从反应蒸馏塔中回收水和环氧化物作为塔顶馏分; 和（d）在50℃或更低的温度下冷凝和相分离塔顶馏分以形成包括环氧化物的有机塔顶馏分和包含水的塔顶馏分馏分。

    Separation of propylene oxide from a mixture comprising propylene oxide and methanol
    9.
    发明授权
    Separation of propylene oxide from a mixture comprising propylene oxide and methanol 有权
    从包含环氧丙烷和甲醇的混合物中分离环氧丙烷

    公开(公告)号：US07692031B2

    公开(公告)日：2010-04-06

    申请号：US11631843

    申请日：2005-07-06

    申请人： Hans-Georg Goebbel ,  Henning Schultz ,  Peter Schultz ,  Renate Patrascu ,  Malte Schulz ,  Meinolf Weidenbach

    发明人： Hans-Georg Goebbel ,  Henning Schultz ,  Peter Schultz ,  Renate Patrascu ,  Malte Schulz ,  Meinolf Weidenbach

    IPC分类号： C07D301/32

    CPC分类号： C07D301/32 ,  C07D301/12

    摘要： A method of separating propylene oxide from a mixture (M) comprising propylene oxide and methanol, said method comprising: (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing an extracting solvent into said extractive distillation column; (iii) distilling propylene oxide overhead from said extractive distillation column as top stream; (iv) withdrawing a bottoms stream from said extractive distillation column; (v) compressing the top stream obtained overhead in (iii) by means of at least one compressor to give a compressed vapor.

    摘要翻译： 一种从包含环氧丙烷和甲醇的混合物（M）中分离环氧丙烷的方法，所述方法包括：（i）将所述混合物（M）引入萃取蒸馏塔; （ii）另外将萃取溶剂引入所述​​萃取蒸馏塔中; （iii）从所述萃取蒸馏塔顶部馏出环氧丙烷作为顶部流; （iv）从所述萃取蒸馏塔中取出塔底物​​流; （v）通过至少一个压缩机压缩在（iii）中获得的塔顶馏出物的顶部流以产生压缩蒸汽。