利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

35 条记录 (耗时 0.016 秒)

    Process for purification of crude terephthalic acid
    4.
    发明授权
    Process for purification of crude terephthalic acid 失效
    纯对苯二甲酸粗品的方法

    公开(公告)号：US4467110A

    公开(公告)日：1984-08-21

    申请号：US466651

    申请日：1983-02-15

    申请人： Imre Puskas ,  David E. James

    发明人： Imre Puskas ,  David E. James

    IPC分类号： B01J23/46 ,  C07C51/487 ,  C07C51/42

    CPC分类号： B01J23/46 ,  C07C51/487 ,  F01N2550/20 ,  Y02P20/52

    摘要： A process for producing a purified terephthalic acid which comprises reacting in a liquid phase a mixture of hydrogen and crude terephthalic acid, a palladium/rhodium catalyst on a porous carbonaceous support wherein the catalyst compound is prepared by adsorbing palladium on the support from a complex salt formed in the presence of an amine and acetic acid, followed by deposition of rhodium from a solution of sodium hexanitritorhodate.

    摘要翻译： 一种纯化的对苯二甲酸的制备方法，其包括在液相中将氢和粗对苯二甲酸的混合物，钯/铑催化剂在多孔碳质载体上反应，其中催化剂化合物通过将钯从配合物中吸附在载体上而制备 在胺和乙酸的存在下形成，然后从六硝基异丁酸钠溶液中沉积铑。

    Palladium-rhodium catalyst for purification of crude terephthalic acid
    5.
    发明授权
    Palladium-rhodium catalyst for purification of crude terephthalic acid 失效
    用于纯化粗对苯二甲酸的钯 - 铑催化剂

    公开(公告)号：US4394299A

    公开(公告)日：1983-07-19

    申请号：US316338

    申请日：1981-10-29

    申请人： Imre Puskas ,  David E. James

    发明人： Imre Puskas ,  David E. James

    IPC分类号： B01J23/46 ,  C07C51/487 ,  B01J23/44 ,  C07C51/42

    CPC分类号： B01J23/464 ,  C07C51/487 ,  F01N2550/20 ,  Y02P20/52

    摘要： A process for producing a purified terephthalic acid which comprises reacting in a liquid phase a mixture of hydrogen and crude terephthalic acid, a palladium/rhodium catalyst on a porous carbonaceous support wherein the catalyst compound is prepared by adsorbing palladium on the support from a complex salt formed in the presence of an amine and acetic acid, followed by deposition of rhodium from a solution of sodium hexanitritorhodate.

    摘要翻译： 一种纯化的对苯二甲酸的制备方法，其包括在液相中将氢和粗对苯二甲酸的混合物，钯/铑催化剂在多孔碳质载体上反应，其中催化剂化合物通过将钯从配合物中吸附在载体上而制备 在胺和乙酸的存在下形成，然后从六硝基异丁酸钠溶液中沉积铑。

    Process for removal of high molecular weight impurities in the manufacture of purified terephthalic acid
    6.
    发明授权
    Process for removal of high molecular weight impurities in the manufacture of purified terephthalic acid 失效
    在制备纯对苯二甲酸中除去高分子量杂质的方法

    公开(公告)号：US4782181A

    公开(公告)日：1988-11-01

    申请号：US58142

    申请日：1987-06-04

    申请人： David E. James

    发明人： David E. James

    IPC分类号： C07C51/487 ,  C07C51/42

    CPC分类号： C07C51/487

    摘要： A process for producing fiber grade terephthalic acid is disclosed. In this process impurities having high molecular weight are eliminated by hydrogenation comprising the following steps: (a) treating an aqueous solution containing at least about 1 percent of said impure terephthalic acid with hydrogen at a temperature in the range of about 300.degree. F. to about 450.degree. F. and at a pressure sufficient to maintain the solution in the liquid phase in the presence of a supported or unsupported metallic Group VIII noble metal catalyst wherein both the metal and support components are insoluble in the solution at the temperature and at a hydrogen partial pressure of from about 30 to about 300 pounds per square inch; (b) separating the treated solution from the catalyst; (c) crystallizing terephthalic acid from the separated solution while retaining impurities and the reduced aromatic compounds dissolved in the resulting mother liquor at a temperature in the range of about 100.degree. F. to about 450.degree. F.; and (d) separating the mother liquor as a liquid phase containing dissolved impurities and reduction products from said crystals while continuing to maintain a temperature in the range of about 100.degree. F. to about 450.degree. F. whereby purified crystals of fiber grade terephthalic acid are recovered. Purified terephthalic acid is useful as a starting material in the manufacture of polyethylene terephthalate which is the principal polymer for polyester fibers, films, and resins for bottles.

    摘要翻译： 公开了一种生产纤维级对苯二甲酸的方法。 在该方法中，通过氢化除去具有高分子量的杂质，包括以下步骤：（a）在约300°F的温度范围内用氢处理含有至少约1％的所述不纯对苯二甲酸的水溶液至 在足够的压力下，在负载或未负载的金属VIII族贵金属催化剂存在下将溶液保持在液相中，其中金属和载体组分在温度下不溶于溶液，并且在 氢分压为约30至约300磅/平方英寸; （b）将处理过的溶液与催化剂分离; （c）从分离的溶液中结晶对苯二甲酸，同时保留杂质和溶解在所得母液中的还原芳族化合物在约100°F至约450°F的温度范围内; 和（d）将母液从含有溶解的杂质和还原产物的液相中分离出来，同时继续保持在约100°F至约450°F范围内的温度，从而将纤维级对苯二甲酸 被收回。 纯化的对苯二甲酸可用作制造聚对苯二甲酸乙二醇酯的原料，聚对苯二甲酸乙二醇酯是聚酯纤维，膜和树脂树脂的主要聚合物。

    Multi-species animal caging modules
    8.
    发明授权
    Multi-species animal caging modules 失效
    多物种动物笼养模块

    公开(公告)号：US07487744B1

    公开(公告)日：2009-02-10

    申请号：US11247055

    申请日：2005-10-11

    申请人： Michael L. Goldberg ,  Dwight L. Souder ,  Cindy M. Adamson ,  David E. James

    发明人： Michael L. Goldberg ,  Dwight L. Souder ,  Cindy M. Adamson ,  David E. James

    IPC分类号： A01K31/07 ,  A01K1/03

    CPC分类号： A01K1/031 ,  A01K1/032 ,  A01K31/07

    摘要： Configurable animal housing (caging) is arranged from an assortment of modules consisting of interchangeable frame cores, interstages, walls and divider panels that address a broad spectrum of animal housing needs. Various configurations include both open living and enrichment areas as well as isolation housing and are easily achieved using a quick-disconnect approach to assembly. Animal resistant lock assemblies hold modules together and use a common key to permit rapid changes of configuration without tools. Systems can address configurations for wall mounting, mobile racking, individual, and group housing, and almost any other configuration animal caregivers would want.

    摘要翻译： 可配置的动物房屋（笼子）由各种模块组成，包括可互换的框架芯，间隔件，墙壁和分隔板，可满足广泛的动物需求。 各种配置包括开放生活和富集区域以及隔离住房，并且可以使用快速断开的组装方式轻松实现。 动物抵抗锁定组件将模块保持在一起，并使用公共密钥来允许快速更改配置而无需工具。 系统可以处理墙壁安装，移动式货架，个人和组件外壳以及几乎任何其他配置动物护理人员想要的配置。

    Indirect cooling of primary impact type solids separator elements in a CFB reactor
    10.
    发明授权
    Indirect cooling of primary impact type solids separator elements in a CFB reactor 失效
    在CFB反应器中间接冷却主冲击型固体分离器元件

    公开(公告)号：US5809940A

    公开(公告)日：1998-09-22

    申请号：US864233

    申请日：1997-05-23

    申请人： David E. James ,  David J. Walker ,  Felix Belin

    发明人： David E. James ,  David J. Walker ,  Felix Belin

    IPC分类号： B01D45/08 ,  B09B3/00

    CPC分类号： B01D45/08

    摘要： An improved CFB reactor or combustor arrangement has at least a first and a second group of impact type particle separators or U-beams with cooling surfaces located adjacent and immediately upstream of the second group of U-beams which serve to cool flue gas/solids flowing through the CFB before it reaches the second group of U-beams. By reducing the gas temperature in the vicinity of and entering the second group of U-beams, the U-beams can be made of less expensive materials and are thus less expensive to produce and maintain. The heat absorbed by the local cooling surfaces can be applied to heat a working fluid supplied to a turbine or other process.

    摘要翻译： 改进的CFB反应器或燃烧器装置具有至少第一组和第二组冲击型颗粒分离器或U形梁，其中冷却表面位于第二组U形梁的邻近并紧邻上游，用于冷却烟道气/固体流动 通过CFB到达第二组U型梁前。 通过降低第二组U形梁附近和进入第二组U形梁的气体温度，U形梁可以由较便宜的材料制成，因此生产和维护成本较低。 由局部冷却表面吸收的热量可用于加热供应给涡轮机或其他工艺的工作流体。