Aluminum containing polyester polymers having low acetaldehyde generation rates
    1.
    发明申请
    Aluminum containing polyester polymers having low acetaldehyde generation rates 有权
    含铝聚酯聚合物具有低乙醛生成速率

    公开(公告)号:US20070066791A1

    公开(公告)日:2007-03-22

    申请号:US11495431

    申请日:2006-07-28

    IPC分类号: C08G63/02

    摘要: A polyester polymer composition containing polyester polymers such as polymers having repeating ethylene terephthalate units, aluminum atoms in an amount of at least 3 ppm based on the weight of the polymer, the polyester polymers having an It.V. of at least 0.72 dL/g obtained through a melt phase polymerization and a residual acetaldehyde level of 10 ppm or less. Also provided are polyester polymer compositions containing polyester polymers and: (i) aluminum atoms (ii) alkaline earth metal atoms or alkali metal atoms or alkali compound residues, and (iii) a catalyst deactivator such as a phosphorus compound. The phosphorus compound is added to the polyester melt either late in the polycondensation or upon remelting a solid polyester polymer. The polyester polymer exhibits good L* brightness, clarity, and low levels of acetaldehyde generated upon melting.

    摘要翻译: 一种聚酯聚合物组合物,其包含聚酯聚合物,例如具有重复的对苯二甲酸乙二醇酯单元的聚合物,铝原子的量基于聚合物的重量为至少3ppm,聚酯聚合物具有It.V. 通过熔融相聚合获得的至少0.72dL / g,残余乙醛水平为10ppm以下。 还提供了含有聚酯聚合物的聚酯聚合物组合物,和:(i)铝原子(ii)碱土金属原子或碱金属原子或碱性化合物残基,和(iii)催化剂失活剂如磷化合物。 在缩聚后期或重熔固体聚酯聚合物时,将磷化合物加入到聚酯熔体中。 聚酯聚合物在熔化时表现出良好的L *亮度,透明度和低水平的乙醛。

    Removal of residual acetaldehyde from polyester polymer particles
    3.
    发明申请
    Removal of residual acetaldehyde from polyester polymer particles 有权
    从聚酯聚合物颗粒中除去残留的乙醛

    公开(公告)号:US20060047103A1

    公开(公告)日:2006-03-02

    申请号:US11018358

    申请日:2004-12-21

    IPC分类号: C08G63/02

    摘要: In one embodiment, there is provided a process comprising introducing polyester polymer particles containing residual acetaldehyde into a vessel at a temperature within a range of 130° C. to 195° C. to form a bed of particles within the vessel, flowing a gas through at least a portion of the particle bed, and withdrawing finished particles from the vessel having a reduced amount of residual acetaldehyde. In this process, it is not necessary to introduce a hot flow of gas at high flow rates otherwise required to heat up cool particles to a temperature sufficient to strip acetaldehyde. Rather, this process provides a benefit in that, if desired, gas introduced into the vessel at low flow rates and low temperatures can nevertheless effectively strip acetaldehyde in a reasonable time because the hot particles quickly heat a the gas to the particle temperature.

    摘要翻译: 在一个实施方案中,提供了一种方法,其包括将含有残余乙醛的聚酯聚合物颗粒在130℃至195℃的温度范围内引入容器中,以在容器内形成颗粒床,使气体流过 至少一部分颗粒床,并且从具有减少量的残余乙醛的容器中取出成品颗粒。 在该过程中,不需要以高流速引入热流,否则需要将气体加热到足以剥离乙醛的温度。 相反,该方法提供了一个好处,因为如果需要,在低流量和低温下引入容器中的气体可以在合理的时间内有效地剥离乙醛,因为热颗粒将气体快速加热到颗粒温度。

    Reactor with optimized internal tray design
    4.
    发明申请
    Reactor with optimized internal tray design 有权
    具有优化内部托盘设计的反应堆

    公开(公告)号:US20070100094A1

    公开(公告)日:2007-05-03

    申请号:US11496835

    申请日:2006-08-01

    IPC分类号: B01J19/32 B01J19/00 C08F2/00

    摘要: A system for processing large quantities of a reaction medium while maintaining the reaction medium in sheets. The system includes a reactor having a plurality of vertically-spaced downwardly-sloped trays over which the reaction medium flows while it is subjected to reaction conditions. The slope of the trays increases downwardly to accommodate for the increased viscosity of the reaction medium while the reaction medium flows downwardly through the reactor. An upper portion of the trays have a uni-directional configuration, while a lower portion of the trays have a bi-directional configuration. Further, the orientation of flow across the uni-directional trays is rotated by 90 degrees in at least one location as the reaction medium flows down the uni-directional trays.

    摘要翻译: 用于在将反应介质保持在片材中的同时处理大量反应介质的系统。 该系统包括具有多个垂直间隔向下倾斜的塔板的反应器,反应介质在其经受反应条件的同时流过。 托盘的斜面向下增加以适应反应介质的增加的粘度,同时反应介质向下流过反应器。 托盘的上部具有单向配置,而托盘的下部具有双向配置。 此外,随着反应介质沿着单向托盘向下流动,跨过单向托盘的流动方向在至少一个位置旋转90度。

    Computational flow dynamics investigation of mixing within an industrial-scale gear pump
    5.
    发明申请
    Computational flow dynamics investigation of mixing within an industrial-scale gear pump 审中-公开
    工业级齿轮泵混合的计算流动力学研究

    公开(公告)号:US20060268658A1

    公开(公告)日:2006-11-30

    申请号:US11139410

    申请日:2005-05-27

    IPC分类号: B01F5/14

    CPC分类号: B01F3/10 B01F5/14

    摘要: A method of mixing fluids includes providing a flow stream of a first fluid, providing a flow stream of second fluid, and providing a gear pump having an inlet and an outlet. The flow stream of the first fluid and the second fluid is fed through the inlet of the gear pump. The gear pump is operated to mix the flow stream of the first fluid and the second fluid to obtain a mixed fluid flow stream out of the outlet of the gear pump.

    摘要翻译: 混合流体的方法包括提供第一流体的流动流,提供第二流体的流动流,以及提供具有入口和出口的齿轮泵。 第一流体和第二流体的流动流通过齿轮泵的入口进料。 操作齿轮泵以混合第一流体和第二流体的流动流以从齿轮泵的出口获得混合流体流动流。

    Waste treatment system for PTA and PET manufacturing plants
    6.
    发明申请
    Waste treatment system for PTA and PET manufacturing plants 审中-公开
    PTA和PET制造厂的废物处理系统

    公开(公告)号:US20060046217A1

    公开(公告)日:2006-03-02

    申请号:US11132901

    申请日:2005-05-19

    IPC分类号: F23D14/00

    摘要: The present invention provides a method for treating the wastes of polyester-manufacturing processes. The method of the invention comprises combining the fuel with a first waste byproduct stream to form a combined fuel and first waste byproduct stream mixture that is combusted in a furnace. The present invention also provides certain useful variations of this method in which one or more of the following steps are performed: a second waste byproduct stream is introduced and treated in a regenerative thermal oxidizer, a third waste byproduct stream is introduced and treated in a waste water treatment plant, or a fourth waste byproduct stream is introduced and treated in a fluid bed incinerator. The present invention also provides an apparatus that executes the methods of the invention.

    摘要翻译: 本发明提供了一种处理聚酯制造方法废弃物的方法。 本发明的方法包括将燃料与第一废物副产物流组合以形成在炉中燃烧的组合燃料和第一废物副产物流混合物。 本发明还提供了该方法的某些有用的变型,其中执行以下一个或多个步骤:在再生热氧化器中引入和处理第二废物副产物流,将第三废物副产物流引入并处理废物 水处理厂或第四废物副产物流在流化床焚烧炉中引入和处理。 本发明还提供一种执行本发明的方法的装置。