利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

276 条记录 (耗时 0.022 秒)

    FIXED-BED MULTI-TUBULAR REACTOR FOR PRODUCING ALKENYL ACETATE
    1.
    发明申请
    FIXED-BED MULTI-TUBULAR REACTOR FOR PRODUCING ALKENYL ACETATE 有权

    公开(公告)号：US20220314181A1

    公开(公告)日：2022-10-06

    申请号：US17289352

    申请日：2020-10-28

    申请人： SHOWA DENKO K.K.

    发明人： Yasuhiro IWAMA ,  Maiko IKUSHIMA ,  Kazuki UMEHARA ,  Mitsuru TANAKA ,  Toshiyuki MAKI

    IPC分类号： B01J8/06 ,  B01J8/00 ,  C07C67/05

    摘要： A fixed-bed multi-tubular reactor for producing an alkenyl acetate by a gas phase catalytic oxidation reaction of a lower olefin, acetic acid and oxygen including a plurality of reaction tubes, a thermometer protection tube inserted into at least one of the plurality of reaction tubes, a thermometer inserted into the thermometer protection tube, and a shield disposed above the reaction tube into which the thermometer protection tube is inserted and attached to the thermometer protection tube, wherein an effective projection region of the shield entirely covers the inlet opening of the reaction tube into which the thermometer protection tube is inserted.

    Process for producing vinyl acetate
    5.
    发明授权
    Process for producing vinyl acetate 有权
    乙酸乙烯酯的制造方法

    公开(公告)号：US09573877B2

    公开(公告)日：2017-02-21

    申请号：US13975552

    申请日：2013-08-26

    申请人： Celanese International Corporation

    发明人： Pieter Vismans ,  Naveed Aslam ,  Tony Hammock ,  Kevin Hanks ,  Ilias S. Kotsianis ,  Tianshu Pan ,  Daniel Rangel-Osalde ,  Kelly Wallace

    IPC分类号： C07C67/05 ,  C07C67/055

    CPC分类号： C07C67/05 ,  C07C67/055 ,  C07C69/15

    摘要： The present invention relates to a process for forming vinyl acetate. The process comprises the step of providing a reaction mixture having an initial heat capacity. The reaction mixture comprises acetic acid, oxygen, ethylene, and optionally water. The process further comprises the step of adding to the reaction mixture at least one heat capacity modifier to form an increased heat capacity reaction mixture. The process further comprises the step of contacting the acetic acid, oxygen, and ethylene over a catalyst under conditions effective to form a crude vinyl acetate product. The crude vinyl acetate product comprises vinyl acetate and water.

    摘要翻译： 本发明涉及一种形成乙酸乙烯酯的方法。 该方法包括提供具有初始热容的反应混合物的步骤。 反应混合物包括乙酸，氧气，乙烯和任选的水。 该方法还包括向反应混合物中加入至少一种热容量改性剂以形成增加的热容反应混合物的步骤。 该方法还包括在有效形成粗乙酸乙烯酯产物的条件下，在催化剂上使乙酸，氧气和乙烯接触的步骤。 粗乙酸乙烯酯产物包括乙酸乙烯酯和水。

    Processes for Producing Vinyl Acetate Composition Having Low Impurity Content
    7.
    发明申请
    Processes for Producing Vinyl Acetate Composition Having Low Impurity Content 审中-公开
    生产低杂质含量乙酸乙烯酯组合物的方法

    公开(公告)号：US20130261330A1

    公开(公告)日：2013-10-03

    申请号：US13771569

    申请日：2013-02-20

    申请人： CELANESE INTERNATIONAL CORPORATION

    发明人： Naveed Aslam ,  Jessica Freeman ,  Ilias S. Kotsianis ,  Lauren Moore ,  Quiang Yao

    IPC分类号： C07C67/05 ,  B01J19/00

    CPC分类号： C07C67/05 ,  B01J8/025 ,  B01J19/00 ,  B01J2208/025 ,  C07C69/15

    摘要： The present invention, in one embodiment, is to a process for inhibiting impurity formation a vinyl acetate formation reaction. The process comprises the step of providing a reactor comprising an inlet section, an outlet section, a filler (or fillers), and a catalyst block section. The filler is disposed in the outlet section. The catalyst block section may be in communication with and configured between the inlet and outlet sections. The process further comprises the steps of introducing the reactants to the inlet section and contacting the reactants in the catalyst block section under conditions effective to form a crude vinyl acetate composition. The process may further comprise the step of directing the crude vinyl acetate composition into the outlet section, which comprises the filler.

    摘要翻译： 在一个实施方案中，本发明涉及抑制乙酸乙烯酯形成反应的杂质形成的方法。 该方法包括提供包括入口部分，出口部分，填料（或填料）和催化剂嵌段部分的反应器的步骤。 填充物设置在出口部分中。 催化剂块部分可以在入口部分和出口部分之间连通并构造。 该方法还包括将反应物引入入口部分并在有效形成粗乙酸乙烯酯组合物的条件下使催化剂嵌段部分中的反应物接触的步骤。 该方法还可以包括将粗乙酸乙烯酯组合物引入包含填料的出口部分的步骤。

    METHOD FOR PRODUCING VINYL ACETATE MONOMER
    8.
    发明申请
    METHOD FOR PRODUCING VINYL ACETATE MONOMER 有权
    乙酸乙烯酯单体的制备方法

    公开(公告)号：US20120053361A1

    公开(公告)日：2012-03-01

    申请号：US13266324

    申请日：2010-04-22

    申请人： Willibald Dafinger ,  Peter Holl ,  Johann Wagner

    发明人： Willibald Dafinger ,  Peter Holl ,  Johann Wagner

    IPC分类号： C07C67/05

    CPC分类号： C07C67/05 ,  C07C67/055 ,  C07C69/01 ,  C07C69/15

    摘要： The invention relates to a method for producing vinyl acetate in a heterogeneously catalyzed, continuous gas-phase process by reacting ethylene with acetic acid and oxygen in a reactor, and a) separating the product gas flow essentially containing ethylene, vinyl acetate, acetic acid, water, carbon dioxide, and other inert gases, and b) feeding a circulating gas flow containing ethylene and CO2 back into the reactor, c) the circulating gas flow being compressed in a circulating gas compressor before being fed back into the reactor, and d) a partial flow of the circulating gas is branched off on the suction side or the pressure side of the circulating gas compressor and is fed to a CO2 scrubbing process, and e) is scrubbed in a water scrubber before the CO2 scrubbing process, characterized in that f) after the CO2 scrubbing process, the partial flow, together with ethylene as a propellant, is fed, by means of a jet compressor, to the circulating gas on the pressure side of the circulating gas compressor and downstream of the point where the partial flow is removed for CO2 scrubbing, and/or g) the bottom product from the water scrubber is fed directly to the pre-dehydration column.

    摘要翻译： 本发明涉及一种通过在反应器中使乙烯与乙酸和氧反应而在非均相催化的连续气相方法中生产乙酸乙烯酯的方法，以及a）分离基本上含有乙烯，乙酸乙烯酯，乙酸， 水，二氧化碳和其他惰性气体，以及b）将含有乙烯和CO 2的循环气流送入反应器中，c）循环气体流在回送进入反应器之前在循环气体压缩机中被压缩，d ）循环气体的部分流动在循环气体压缩机的吸入侧或压力侧分支并进料到CO 2洗涤过程中，e）在CO 2洗涤过程之前在水洗涤器中洗涤，其特征在于 f）在CO 2洗涤过程之后，部分流动与乙烯作为推进剂一起通过喷射式压缩机进料到循环压力侧的循环气体 并且/或g）将来自水洗涤器的底部产物直接供给到预脱水塔中。

    Processes for preparing alkenyl alkanoates using a layered catalyst composition
    9.
    发明授权
    Processes for preparing alkenyl alkanoates using a layered catalyst composition 有权
    使用层状催化剂组合物制备烯基链烷酸酯的方法

    公开(公告)号：US07897804B2

    公开(公告)日：2011-03-01

    申请号：US12098951

    申请日：2008-04-07

    申请人： Tao Wang ,  Dean E. Rende ,  James E. Rekoske ,  Jeffery C. Bricker ,  Jeffrey L. Boike ,  Masao Takayama ,  Kouji Hara ,  Nobuyuki Aoi

    发明人： Tao Wang ,  Dean E. Rende ,  James E. Rekoske ,  Jeffery C. Bricker ,  Jeffrey L. Boike ,  Masao Takayama ,  Kouji Hara ,  Nobuyuki Aoi

    IPC分类号： C07C67/05

    CPC分类号： B01J37/0242 ,  B01J23/44 ,  B01J23/52 ,  B01J23/58 ,  B01J37/0219 ,  B01J37/0221 ,  C07C67/055 ,  C07C69/01 ,  C07C69/15

    摘要： A layered composition which can be used in various processes has been developed. The composition comprises an inner core such as a cordierite core and an outer layer comprising a refractory inorganic oxide, a fibrous component and an inorganic binder. The refractory inorganic oxide layer can be alumina, zirconia, titania, etc. while the fibrous component can be titania fibers, silica fibers, carbon fibers, etc. The inorganic oxide binder can be alumina, silica, zirconia, etc. The layer can also contain catalytic metals such as gold and platinum plus other modifiers. The layered composition is prepared by coating the inner core with a slurry comprising the refractory inorganic oxide, fibrous component, an inorganic binder precursor and an organic binding agent such as polyvinyl alcohol. The composition can be used in various hydrocarbon conversion processes including production of vinyl acetate.

    摘要翻译： 已经开发了可用于各种方法的分层组合物。 该组合物包括内核，例如堇青石芯，外层包含耐火无机氧化物，纤维组分和无机粘合剂。 难熔无机氧化物层可以是氧化铝，氧化锆，二氧化钛等，而纤维成分可以是二氧化钛纤维，二氧化硅纤维，碳纤维等。无机氧化物粘合剂可以是氧化铝，二氧化硅，氧化锆等。该层也可以 含有催化金属如金和铂加其他改性剂。 通过用包含耐火无机氧化物，纤维组分，无机粘合剂前体和有机粘合剂如聚乙烯醇的浆料涂覆内芯来制备层状组合物。 该组合物可用于各种烃转化方法，包括生产乙酸乙烯酯。