Polylactide manufacturing apparatus and method for manufacturing polylactide
    1.
    发明授权
    Polylactide manufacturing apparatus and method for manufacturing polylactide 有权
    聚丙交酯制造装置和聚丙交酯的制造方法

    公开(公告)号:US08106150B2

    公开(公告)日:2012-01-31

    申请号:US12453912

    申请日:2009-05-27

    IPC分类号: C08G63/08 B01D53/78 B01J19/18

    摘要: In a process of manufacturing polylactide, synthesis of high-quality polymers is achieved with a sufficient degree of vacuum secured. Provided is an apparatus for manufacturing polylactide which includes the steps of preparing lactide through oligomerization of lactic acid and depolymerization of the resulting oligomers, effecting ring-opening polymerization of the lactide, and removing unreacted lactide. The apparatus comprises an exhausting gas treatment device for reducing pressure in the step of removing unreacted lactide. The exhausting gas treatment device includes boilers (81-83) for generating water vapor; a pressure-reducing section having stages each including an ejector (71-73) driven with the water vapor, a condenser (61-63) connected downstream of the ejector, and a hot well tank (41-43) connected to the condenser; and a main condenser 60 and a main hot well tank 40 connected to the main condenser that are disposed on a pipe line through which a gas of the unreacted lactide is suctioned into the pressure-reducing section. The gas of the unreacted lactide is washed away in the main condenser using a liquid containing lactic acid as a main component that has been collected in the main hot well tank.

    摘要翻译: 在制备聚丙交酯的过程中,通过确保足够的真空度实现高质量聚合物的合成。 提供了一种制备聚丙交酯的装置,包括通过乳酸低聚制备丙交酯并使所得低聚物解聚,进行丙交酯的开环聚合和除去未反应的丙交酯的步骤。 该装置包括用于在去除未反应的丙交酯的步骤中降低压力的排气处理装置。 排气处理装置包括用于产生水蒸汽的锅炉(81-83) 减压部,其具有各自包括由水蒸气驱动的喷射器(71-73)的台阶,连接在喷射器下游的冷凝器(61-63)和连接到冷凝器的热井箱(41-43); 以及主冷凝器60和连接到主冷凝器的主热水箱40,所述主冷凝器60设置在管道上,未反应的丙交酯的气体被吸入减压部。 未反应的丙交酯的气体在主冷凝器中使用含有乳酸作为主要成分的液体在主要热水槽中被收集。

    POLYMER PRODUCING METHOD AND APPARATUS AND POLYMER DEGASSING METHOD AND APPARATUS
    2.
    发明申请
    POLYMER PRODUCING METHOD AND APPARATUS AND POLYMER DEGASSING METHOD AND APPARATUS 有权
    聚合物生产方法和装置和聚合物分解方法和装置

    公开(公告)号:US20090111954A1

    公开(公告)日:2009-04-30

    申请号:US12259432

    申请日:2008-10-28

    IPC分类号: C08G85/00 B01J19/18 B01D19/00

    摘要: The polymer degassing apparatus includes a barrel-shaped horizontal container 41 having a supply port 42 for supplying a reactant, a discharge port 43 for discharging a reactant, a stirring means 45 for stirring a reactant, and a degassing means for drawing a gas via a degassing port 44 of the horizontal container. The supply port is positioned below the molten liquid level of the reactant. A recovery container 37 that is connected to the degassing port for recovering a volatile substance in the gas and a vacuum pump 36 are provided. The stirring means includes a plurality of stirring rods 46 oriented along the same direction as the axis in the horizontal container and coupling members 47 for coupling the stirring rods along the same direction as the axis, provided that the coupling members are placed at a distance from the virtual rotation center of the stirring means.

    摘要翻译: 聚合物脱气装置包括具有用于供给反应物的供给口42的桶形水平容器41,排出反应物的排出口43,搅拌反应物的搅拌装置45,以及用于通过 水平容器的脱气口44。 供应口位于反应物的熔融液面之下。 设置有与用于回收气体中的挥发性物质的脱气口连接的回收容器37和真空泵36。 搅拌装置包括沿与水平容器中的轴线相同的方向定向的多个搅拌棒46,以及用于将搅拌棒沿着与轴线相同的方向连接的联接构件47,条件是联接构件被放置在距离 搅拌装置的虚拟旋转中心。

    Equipment and method for producing polyhydroxycarboxylic acid
    4.
    发明授权
    Equipment and method for producing polyhydroxycarboxylic acid 有权
    多羟基羧酸的制备方法和设备

    公开(公告)号:US08153754B2

    公开(公告)日:2012-04-10

    申请号:US12544477

    申请日:2009-08-20

    IPC分类号: C08G63/08 B01D53/00 B01J19/18

    摘要: An equipment for producing polyhydroxycarboxylic acid, includes a ring-opening polymerization apparatus, a liquid phase devolatilizing apparatus, and a drying apparatus, wherein an indirect heat exchanger is connected to a vent gas discharge path of the liquid phase devolatilizing apparatus. The indirect heat exchanger captures a dispersed in-process substance containing hydroxycarboxylic acid cyclic dimers and transfers the substance to the ring-opening polymerization apparatus; a wet condenser and a hot well are connected to a vent gas discharge path of the indirect heat exchanger and that of the drying apparatus, respectively. The wet condenser captures a dispersed in process substance containing the cyclic dimers with the use of a refrigerant containing hydroxycarboxylic acid corresponding to the cyclic dimers and transfers the substance to the hot well; the hot well causes hydrolysis of the cyclic dimers for generation of hydroxycarboxylic acid; the generated hydroxycarboxylic acid is mixed with a refrigerant and the mixture is circulated to the wet condenser; and hydroxycarboxylic acid is highly concentrated via circulation between the wet condenser and the hot well and then discharged.

    摘要翻译: 用于制备聚羟基羧酸的设备包括开环聚合设备,液相脱挥发酵设备和干燥设备,其中间接热交换器连接到液相脱挥发设备的通气气体排放路径。 间接热交换器捕获含有羟基羧酸环二聚体的分散的在线物质并将物质转移到开环聚合装置中; 湿式冷凝器和热井分别连接到间接热交换器和干燥装置的排放气体排出路径。 湿式冷凝器使用含有对应于环状二聚体的羟基羧酸的制冷剂捕获含有环状二聚体的分散过程物质,并将物质转移到热井中; 热阱引起环状二聚体的水解产生羟基羧酸; 将所生成的羟基羧酸与制冷剂混合,并将混合物循环至湿式冷凝器; 并且羟基羧酸通过湿式冷凝器和热井之间的循环高度浓缩,然后排出。

    METHOD AND APPARATUS FOR PRODUCING POLYHYDROXY CARBOXYLIC ACID
    6.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING POLYHYDROXY CARBOXYLIC ACID 有权
    用于生产聚羟基羧酸的方法和装置

    公开(公告)号:US20080004469A1

    公开(公告)日:2008-01-03

    申请号:US11770165

    申请日:2007-06-28

    IPC分类号: C07C59/10 B01J19/00

    摘要: The object is to provide a method and apparatus for producing a polyhydroxy carboxylic acid according to which an annular diner can be efficiently obtained in the production of polyhydroxy carboxylic acid which is small in distribution breadth of molecular weight in depolymerization and opening ring polymerization steps. There are provided a depolymerization device 11 which depolymerizes hydroxy carboxylic acid or a polycondensate thereof into an annular dimer, a upper distillation column 13 which condenses the annular dimer vaporized in the depolymerization device 11, and lower distillation column 12 which refluxes the annular dimer and is provided between the depolymerization device 11 and the upper distillation column 13, said depolymerization device 11 having a polycondensate feed opening 54 and an annular dimer discharge opening 55 which are provided at a casing 50, a liquid film being formed inside the casing 50 and heated by a heating part.

    摘要翻译: 本发明的目的是提供一种生产多羟基羧酸的方法和装置,根据该方法和装置,在解聚和开环聚合步骤中分子量分布宽度小的多羟基羧酸的制备中可以有效地获得环形餐具。 提供了将羟基羧酸或其缩聚物解聚成环状二聚体的解聚装置11,使在解聚装置11中蒸发的环状二聚体冷凝的上部蒸馏塔13和回流该环状二聚体的下馏分12, 在解聚装置11和上部蒸馏塔13之间,所述解聚装置11具有设置在壳体50处的缩聚物供给口54和环状二聚体排出口55,液体膜形成在壳体50的内部并被加热 加热部件。

    Apparatus for continuous stirring and process for continuous polycondensation of polymer resin
    9.
    发明授权
    Apparatus for continuous stirring and process for continuous polycondensation of polymer resin 失效
    连续搅拌和聚合物树脂连续缩聚方法的设备

    公开(公告)号:US06846103B2

    公开(公告)日:2005-01-25

    申请号:US10229070

    申请日:2002-08-28

    摘要: An apparatus for continuous stirring comprising a horizontal elongated cylindrical vessel and two rotating blade assemblies rotatable in the direction opposite to each other provided in parallel to each other in the vessel, where a liquid feed is moved from one end to another therethrough by rotation of the two rotating blade assemblies in the direction opposite to each other, while stirring and mixing the liquid feed, the two rotating blade assemblies each comprising rotor shafts (3a-3b or 3c-3d) supported at both ends of the rotating blade assemblies, support members (4) each fixed to the rotor shafts, connecting members (5) span between the support members (4) and in positions far from the substantial rotating shaft center and a plurality of plate-shaped stirring blades (6) arranged in parallel in the longitudinal direction of the substantial rotating shaft center and fixed to the connecting members (5).

    摘要翻译: 一种用于连续搅拌的装置,包括水平细长圆柱形容器和两个旋转叶片组件,两个旋转叶片组件可在彼此相对的方向上旋转,在容器中彼此平行设置,其中液体进料通过旋转从一端移动到另一端 两个旋转叶片组件在彼此相反的方向上同时搅拌和混合液体进料,两个旋转叶片组件各自包括支撑在旋转叶片组件两端的转子轴(3a-3b或3c-3d),支撑构件 (4),每个固定到转子轴上,连接构件(5)跨过支撑构件(4)和远离实质旋转轴中心的位置,并且多个板状搅拌叶片(6)平行布置在 大致旋转轴中心的纵向方向并固定到连接构件(5)。

    Method for synthesizing acrolein
    10.
    发明授权
    Method for synthesizing acrolein 失效
    丙烯醛合成方法

    公开(公告)号:US08450531B2

    公开(公告)日:2013-05-28

    申请号:US12979459

    申请日:2010-12-28

    IPC分类号: C07C45/64 C07D307/46 C07H1/00

    摘要: An object of the present invention is to provide a method for commercially manufacturing acrolein in a large flow rate by making supercritical water and an acid interact with glycerin, wherein by efficiently mixing high-concentration glycerin and supercritical water with each other, the method is made capable of making the synthesis stably proceed with a high yield while the occlusion and abrasion of the pipes and devices due to the generation of by-products are being suppressed. The method for synthesizing acrolein of the present invention is a method for synthesizing acrolein by making supercritical water and an acid interact with glycerin, the method using a reaction apparatus including: a cylindrical mixing flow path for mixing a fluid including glycerin and a fluid including supercritical water with each other; a first inlet flow path, disposed offset from the central axis of the mixing flow path, for making the fluid including glycerin flow into the mixing flow path; and a second inlet flow path, disposed offset from the central axis of the mixing flow path, for making the fluid including supercritical water flow into the mixing flow path, wherein the first inlet flow path and the second inlet flow path are each provided in a plurality of numbers in such a way that the first inlet flow paths and the second inlet flow paths are alternately arranged so as to encircle the central axis of the mixing flow path.

    摘要翻译: 本发明的目的是提供一种通过使超临界水和酸与甘油相互作用而大量流动丙烯醛的方法,其中通过将高浓度甘油和超临界水相互有效地混合,制备方法 能够以高产率稳定地进行合成,同时由于副产物的产生而引起的管道和装置的堵塞和磨损被抑制。 本发明的丙烯醛的合成方法是通过使超临界水和酸与甘油相互作用来合成丙烯醛的方法,使用反应装置的方法包括:将含有甘油的液体和包含超临界流体的流体混合的圆筒状混合流路 水相互; 第一入口流动路径,设置为偏离混合流动路径的中心轴线,用于使包含甘油的流体流入混合流动路径; 以及第二入口流动路径,其设置成偏离混合流动路径的中心轴线,用于使包括超临界水流的流体流入混合流动路径,其中第一入口流动路径和第二入口流动路径分别设置在 多个数字,使得第一入口流动路径和第二入口流动路径交替地布置成环绕混合流动路径的中心轴线。