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17 条记录 (耗时 0.014 秒)

    Industrial Process for Production of an Aromatic Carbonate
    1.
    发明申请
    Industrial Process for Production of an Aromatic Carbonate 有权
    用于生产芳香族碳酸酯的工业方法

    公开(公告)号：US20070265461A1

    公开(公告)日：2007-11-15

    申请号：US11632214

    申请日：2005-07-11

    申请人： Shinsuke Fukuoka ,  Hiroshi Hachiya ,  Kazuhiko Matsuzaki

    发明人： Shinsuke Fukuoka ,  Hiroshi Hachiya ,  Kazuhiko Matsuzaki

    IPC分类号： C07C69/96 ,  B01D3/00

    CPC分类号： B01D3/009 ,  B01J2219/30 ,  B01J2219/32 ,  B01J2219/3306 ,  C07C68/06 ,  C07C68/08 ,  Y02P20/127 ,  C07C69/96

    摘要： It is an object of the present invention to provide, for the case of continuously producing aromatic carbonates containing a diaryl carbonate as a main product by taking an alkyl aryl carbonate as a starting material, which is obtainable through a transesterification reaction between a dialkyl carbonate and an aromatic monohydroxy compound, using a continuous multi-stage distillation column in which a catalyst is present, and continuously feeding the starting material into the continuous multi-stage distillation column, a specific process that enables the diaryl carbonate to be produced with high selectivity and high productivity stably for a prolonged period of time on an industrial scale of not less than 1 ton per hour. Although there have been various proposals regarding processes for the production of aromatic carbonates by means of a reactive distillation method, these have all been on a small scale and short operating time laboratory level, and there have been no disclosures whatsoever on a specific process or apparatus enabling mass production on an industrial scale. According to the present invention, there is provided a specified continuous multi-stage distillation column, and there is also provided a specific process that enables a diaryl carbonate to be produced with high selectivity and high productivity stably for a prolonged period of time on an industrial scale of not less than 1 ton per hour from an alkyl aryl carbonate.

    摘要翻译： 本发明的目的是提供一种以碳酸烷基芳基酯作为起始原料连续制备含有碳酸二芳基酯作为主要成分的芳族碳酸酯的情况，其可通过碳酸二烷基酯与碳酸二烷基酯之间的酯交换反应获得 芳族单羟基化合物，使用其中存在催化剂的连续多级蒸馏塔，并将原料连续供给到连续多级蒸馏塔中，具有能够以高选择性制备碳酸二芳基酯的具体方法，以及 以不低于1吨/小时的工业规模长时间稳定地高效生产。 尽管通过反应性蒸馏法已经有关于生产芳族碳酸酯的方法的各种建议，但这些方法都已经在小规模和操作时间短的实验室水平上，并且在具体方法或装置上没有公开任何内容 实现工业规模的批量生产。 根据本发明，提供了一种特定的连续多级蒸馏塔，并且还提供了一种能够在工业上长时间稳定地以高选择性和高生产率制备碳酸二芳基酯的具体方法 碳酸烷基芳基酯不小于1吨/小时。

    Packed absorption towers
    3.
    发明授权
    Packed absorption towers 失效
    包装吸收塔

    公开(公告)号：US5679290A

    公开(公告)日：1997-10-21

    申请号：US714370

    申请日：1996-09-16

    申请人： Gordon M. Cameron ,  Dahya Bhaga

    发明人： Gordon M. Cameron ,  Dahya Bhaga

    IPC分类号： B01D53/18 ,  B01F3/04 ,  C01B17/80

    CPC分类号： C01B17/806 ,  B01D53/18 ,  B01F3/04468 ,  B01J2219/30 ,  Y10S261/72

    摘要： An improved packed tower for effecting the absorption of a gas into a liquid, comprising a cylindrical tower wall defining a packing zone; a plurality of packing pieces contained within the packing zone; a liquid distributor above the packing zone for distributing liquid onto the packing pieces; a gas feed inlet below the packing pieces for feeding gas through the packing zone, the improvement wherein the plurality of packing pieces comprises a first plurality of packing pieces, of a first packing piece size, disposed within a first region of the packing zone defining an annulus adjacent at an upper part of the tower wall, and a second plurality of packing pieces of a second packing piece size greater than the first packing piece size, within a second region of the packing zone. The packed tower provides higher efficiencies in gas absorption over prior art towers as to offer reduced tower and/or packing heights.

    摘要翻译： 一种用于将气体吸收到液体中的改进的填充塔，包括限定填料区的圆柱形塔壁; 包装在包装区内的多个包装件; 在包装区域上方的液体分配器，用于将液体分配到包装件上; 包装件下方的气体进料入口用于将气体输送通过填料区，其改进在于，多个填料件包括第一填料段的第一多个填料件，第一填料段设置在填料区的第一区域内， 在塔壁的上部相邻的环形空间，以及在包装区域的第二区域内的尺寸大于第一包装件尺寸的第二包装件的第二多个包装件。 填充塔提供比现有技术塔更高的气体吸收效率，以提供降低的塔和/或包装高度。

    Gas-liquid contact column and method using a combination of trays and packings
    7.
    发明授权
    Gas-liquid contact column and method using a combination of trays and packings 有权
    气液接触柱和使用托盘和填料的组合的方法

    公开(公告)号：US08800971B2

    公开(公告)日：2014-08-12

    申请号：US13262670

    申请日：2010-04-01

    申请人： Bénédicte Chommeloux ,  Viep Hoang Dinh ,  Ludovic Raynal

    发明人： Bénédicte Chommeloux ,  Viep Hoang Dinh ,  Ludovic Raynal

    IPC分类号： B01F3/04

    CPC分类号： B01D3/20 ,  B01D53/18 ,  B01D2257/304 ,  B01D2257/504 ,  B01J19/32 ,  B01J2219/30 ,  B01J2219/3221 ,  B01J2219/32213 ,  Y02A50/2342 ,  Y02P70/34

    摘要： The gas-liquid contact column comprises at least an upper tray 10 and a lower tray 10, as well as a downcomer 2 for sending the liquid from the upper tray to the lower tray. The trays comprise gas ports. A packing 11 is arranged between the upper tray and the lower tray. The upper tray comprises means 12 for withdrawing liquid from the upper tray, the liquid withdrawn being distributed over the packing.The gas-liquid contact column is particularly well suited for absorption of the CO2 and of the H2S contained in a natural gas or in a syngas, and for capture of the CO2 contained in combustion fumes.

    摘要翻译： 气液接触塔至少包括上托盘10和下托盘10，以及用于将液体从上托盘送到下托盘的降液管2。 托盘包括气体端口。 在上托盘和下托盘之间布置有包装件11。 上部托盘包括用于从上部托盘抽出液体的装置12，所抽出的液体分布在包装上。 气液接触塔特别适用于吸收天然气或合成气中所含的二氧化碳和二氧化硫，以及捕获燃烧烟气中所含的二氧化碳。

    Purification of 1,3-butadiene
    9.
    发明授权
    Purification of 1,3-butadiene 失效
    1,3-丁二烯的纯化

    公开(公告)号：US6093285A

    公开(公告)日：2000-07-25

    申请号：US144117

    申请日：1998-08-31

    申请人： Daniel T. Fernald ,  Stephen L. Ege ,  Si M. Nguyen ,  Richard Peacock ,  Larry L. Nash ,  George A. Moczygemba

    发明人： Daniel T. Fernald ,  Stephen L. Ege ,  Si M. Nguyen ,  Richard Peacock ,  Larry L. Nash ,  George A. Moczygemba

    IPC分类号： B01D3/14 ,  C07C7/04 ,  B01D3/00 ,  C07C51/44

    CPC分类号： B01D3/14 ,  C07C7/04 ,  B01J2219/30 ,  Y10S203/20

    摘要： A system and process for purifying a 1,3-butadiene feedstock containing 1,3-butadiene and various impurities by first introducing the 1,3-butadiene feedstock stream to a separation column to produce an intermediate product stream containing 1,3-butadiene and residual impurities and then introducing the produced intermediate product stream through a condenser to a suitable dryer for removing residual impurities from the intermediate product stream and thereby forming a purified 1,3-butadiene stream. The separation column separates an overhead stream, containing 1,3-butadiene and impurities such as propadiene, water and oxygen, and a bottoms stream, containing impurities such as polymerization inhibitor, ethyl acetylene, 1,3-butadiene dimer, pentane and 1,2-butadiene, from the intermediate product stream which leaves the separation column in the form of a vapor side draw stream.

    摘要翻译： 一种用于纯化含有1,3-丁二烯和各种杂质的1,3-丁二烯原料的系统和方法，首先将1,3-丁二烯原料流引入分离塔以产生含有1,3-丁二烯和 然后将产生的中间产物流通过冷凝器引入合适的干燥器中，以从中间产物流中除去残留的杂质，从而形成纯化的1,3-丁二烯流。 分离塔分离含有1,3-丁二烯和杂质如丙二烯，水和氧的塔顶物流和含有杂质的底部物流，如阻聚剂，乙炔乙炔，1,3-丁二烯二聚物，戊烷和1， 来自以蒸气侧牵引流形式离开分离塔的中间产物流。

    Process for the production of ethylene oxide
    10.
    发明授权
    Process for the production of ethylene oxide 失效
    环氧乙烷生产工艺

    公开(公告)号：US4847393A

    公开(公告)日：1989-07-11

    申请号：US86602

    申请日：1987-08-18

    申请人： Philip Langley

    发明人： Philip Langley

    IPC分类号： C07D301/08 ,  B01J8/06 ,  C07B61/00 ,  C07D301/10 ,  C07D303/04

    CPC分类号： B01J8/067 ,  C07D301/10 ,  B01J2208/00849 ,  B01J2219/30 ,  B01J2219/30223 ,  B01J2219/30475

    摘要： In a process of producing ethylene oxide by contacting ethylene and oxygen with a main body of a solid catalyst in a reaction zone and passing product from that zone through a substantial volume to a cooler, acetaldehyde is produced by isomerization of ethylene oxide in the volume. The acetaldehyde content of the gases entering the cooler is reduced in this invention by passing them through a second, smaller bed of catalyst before the gases are passed to the cooler.

    摘要翻译： 在通过在反应区中将乙烯和氧与固体催化剂主体接触并使产物从该区域通过大体积向较冷的方式生产环氧乙烷的方法中，通过环氧乙烷的体积异构化产生乙醛。 本发明通过使气体通过第二较小的催化剂床，在进入冷却器之前，进入冷却器的气体的乙醛含量降低。