THERMAL CRYSTALLIZATION OF POLYESTER PELLETS IN LIQUID
    2.
    发明申请
    THERMAL CRYSTALLIZATION OF POLYESTER PELLETS IN LIQUID 有权
    聚酯薄膜在液体中的热结晶

    公开(公告)号:US20080154021A1

    公开(公告)日:2008-06-26

    申请号:US12028277

    申请日:2008-02-08

    IPC分类号: C08G2/28 C08G2/00

    摘要: A process for thermally crystallizing a polyester polymer by introducing pellets into a liquid medium having a temperature of at least 140° C. within a liquid medium zone and crystallizing the submerged pellets at or above the vapor pressure of the liquid medium without increasing the molecular weight of the pellets, and while the pressure on at least a portion of the pellets is equal to or greater than the vapor pressure of the liquid medium, separating at least a portion of said pellets and at least a portion of the liquid medium from each other. The crystallization is desirably conducted in the liquid medium zone without mechanically induced agitation. Optionally, the pellets are formed by an underfluid pelletizer.There is also provided a process for thermally crystallizing solid pellets in a pipe by directing a flow of solid pellets in a liquid medium through a pipe having an aspect ratio L/D of at least 50:1, wherein the solid pellets are crystallized in the pipe at a liquid medium temperature greater than the Tg of the polyester polymer.

    摘要翻译: 将聚合物聚合物引入到液体介质区内的温度至少为140℃的液体介质中并使液体介质的蒸气压以上或高于液体介质的蒸气压使其结晶的方法使聚酯聚合物热结晶,而不增加分子量 并且当至少一部分颗粒的压力等于或大于液体介质的蒸气压时,将至少一部分所述颗粒和液体介质的至少一部分彼此分离 。 结晶期望在液体介质区域中进行,而不会机械诱导搅拌。 任选地,颗粒由底流体造粒机形成。 还提供了一种通过将纵横比为L / D至少为50:1的管引导固体颗粒在液体介质中的流动使管中的固体颗粒热结晶的方法,其中固体颗粒在 在高于聚酯聚合物的T g的液体介质温度下管。

    Polymerization autoclave
    3.
    发明授权
    Polymerization autoclave 失效
    聚合釜

    公开(公告)号:US4298576A

    公开(公告)日:1981-11-03

    申请号:US097708

    申请日:1979-11-27

    摘要: A polymerization autoclave for the suspension polymerization of vinyl compounds in the aqueous phase having a volume of from 50 to 200 m.sup.3, an impeller agitator driven from below at the bottom of the autoclave and two cylindrical displacement bodies acting as flow interrupters, secured downwardly from the autoclave dome, where the autoclave has a height-to-diameter ratio of from 2.4 to 3 with a critically dimensioned agitator and critically dimensioned flow interrupter fittings. By the use of this invention in the case large-scale autoclaves, the heat of polymerization can be removed merely by wall-cooling. The autoclave according to the invention are very economical, as shown by, for example, a spatial capacity of 0.3 to 0.4 metric tons of polyvinyl chloride per m.sup.3 autoclave volume.

    摘要翻译: 用于在水相中乙烯基化合物的悬浮聚合的聚合反应釜,其体积为50至200m 3,在高压釜底部从下方驱动的叶轮搅拌器和用作流动断路器的两个圆柱形位移体从 高压灭菌器圆顶,其中高压釜的高度与直径之比为2.4至3,具有严格尺寸的搅拌器和关键尺寸的流动断路器配件。 通过使用本发明,在大型高压釜的情况下,只能通过壁冷却来除去聚合热。 根据本发明的高压釜是非常经济的,例如由0.3至0.4公吨聚氯乙烯/ m3高压釜体积的空间容量所示。

    Tube reactor
    8.
    发明授权
    Tube reactor 有权
    管式反应器

    公开(公告)号:US08343433B2

    公开(公告)日:2013-01-01

    申请号:US12735028

    申请日:2008-12-08

    IPC分类号: F28D7/16 C07D301/10

    摘要: Apparatus, methods, and processes are provided for a tube reactor including multiple, substantially parallel reaction tubes arranged within a tube reactor shell, the reaction tubes spaced apart such that a thermal fluid can flow between the tubes and transfer heat between the tubes and the thermal fluid during operation; an inlet head defining an inlet head space, where the inlet head space is in fluid communication with an inlet end of the reaction tubes, and an outlet head including an outlet head shell and at least one insert positioned within an outlet head space defined by the outlet head, where the insert defines a reduced volume outlet head space relative to that defined by the outlet head, and where the reduced volume outlet head space is in fluid communication with an outlet end of the reaction tubes and in fluid communication with a reactor outlet.

    摘要翻译: 提供了一种用于管式反应器的装置,方法和方法,其包括布置在管式反应器壳体内的多个基本上平行的反应管,反应管间隔开,使得热流体可以在管之间流动并在管之间传递热量 运行过程中的液体; 入口头,其限定入口顶部空间,其中所述入口顶部空间与所述反应管的入口端流体连通;以及出口头,所述出口头包括出口头部外壳和位于由所述入口顶部空间限定的出口顶部空间内的至少一个插入件 出口头,其中插入件相对于由出口头限定的出口顶部空间限定了减小的体积出口顶部空间,并且其中减小体积的出口顶部空间与反应管的出口端流体连通并且与反应器出口流体连通 。

    TUBE REACTOR
    9.
    发明申请
    TUBE REACTOR 有权
    管反应器

    公开(公告)号:US20110034709A1

    公开(公告)日:2011-02-10

    申请号:US12735028

    申请日:2008-12-08

    IPC分类号: C07D301/02 B01J19/00

    摘要: Apparatus, methods, and processes are provided for a tube reactor including multiple, substantially parallel reaction tubes arranged within a tube reactor shell, the reaction tubes spaced apart such that a thermal fluid can flow between the tubes and transfer heat between the tubes and the thermal fluid during operation; an inlet head defining an inlet head space, where the inlet head space is in fluid communication with an inlet end of the reaction tubes, and an outlet head including an outlet head shell and at least one insert positioned within an outlet head space defined by the outlet head, where the insert defines a reduced volume outlet head space relative to that defined by the outlet head, and where the reduced volume outlet head space is in fluid communication with an outlet end of the reaction tubes and in fluid communication with a reactor outlet.

    摘要翻译: 提供了一种用于管式反应器的装置,方法和方法,其包括布置在管式反应器壳体内的多个基本上平行的反应管,反应管间隔开,使得热流体可以在管之间流动并在管之间传递热量 运行过程中的液体; 入口头,其限定入口顶部空间,其中所述入口顶部空间与所述反应管的入口端流体连通;以及出口头,所述出口头包括出口头部外壳和位于由所述入口顶部空间限定的出口顶部空间内的至少一个插入件 出口头,其中插入件相对于由出口头限定的出口顶部空间限定了减小的体积出口顶部空间,并且其中减小体积的出口顶部空间与反应管的出口端流体连通并且与反应器出口流体连通 。

    Thermal crystallization of polyester pellets in liquid
    10.
    发明申请
    Thermal crystallization of polyester pellets in liquid 有权
    聚酯颗粒在液体中的热结晶

    公开(公告)号:US20050065318A1

    公开(公告)日:2005-03-24

    申请号:US10665664

    申请日:2003-09-18

    摘要: A process for thermally crystallizing a polyester polymer by introducing pellets into a liquid medium having a temperature of at least 140° C. within a liquid medium zone and crystallizing the submerged pellets at or above the vapor pressure of the liquid medium without increasing the molecular weight of the pellets, and while the pressure on at least a portion of the pellets is equal to or greater than the vapor pressure of the liquid medium, separating at least a portion of said pellets and at least a portion of the liquid medium from each other. The crystallization is desirably conducted in the liquid medium zone without mechanically induced agitation. Optionally, the pellets are formed by an underfluid pelletizer. There is also provided a process for thermally crystallizing solid pellets in a pipe by directing a flow of solid pellets in a liquid medium through a pipe having an aspect ratio L/D of at least 50:1, wherein the solid pellets are crystallized in the pipe at a liquid medium temperature greater than the Tg of the polyester polymer.

    摘要翻译: 将聚合物聚合物引入到液体介质区内的温度至少为140℃的液体介质中并使液体介质的蒸气压以上或高于液体介质的蒸气压使其结晶的方法使聚酯聚合物热结晶,而不增加分子量 并且当至少一部分颗粒的压力等于或大于液体介质的蒸气压时,将至少一部分所述颗粒和液体介质的至少一部分彼此分离 。 结晶期望在液体介质区域中进行,而不会机械诱导搅拌。 任选地,颗粒由底流体造粒机形成。 还提供了一种通过将纵横比为L / D至少为50:1的管引导固体颗粒在液体介质中的流动使管中的固体颗粒热结晶的方法,其中固体颗粒在 在液体介质温度下的管道大于聚酯聚合物的Tg。