公开(公告)号：US5456828A

公开(公告)日：1995-10-10

申请号：US252753

申请日：1994-06-02

申请人： Paul Tersi ,  Wolfgang Briegel ,  Dieter Cermak ,  Michael Schulze

发明人： Paul Tersi ,  Wolfgang Briegel ,  Dieter Cermak ,  Michael Schulze

IPC分类号： B01D29/11 ,  B01D35/18 ,  B29C47/68 ,  B01D29/00

CPC分类号： B29C47/68 ,  B01D29/114 ,  B01D35/18 ,  B01D2201/0446 ,  B29C47/0011 ,  B29C47/0021 ,  B29C47/081 ,  B29C47/687

摘要： A polymer melt filtration apparatus comprising a closed upright cylindrical vessel divided by two horizontal pipe plates into a small lower product distribution chamber with a product inlet at the bottom, a small upper product collecting chamber with a product outlet at the top, and a large middle chamber connected to a heat carrier fluid circuit. A plurality of closely spaced heat exchanger pipes are mounted in the middle chamber between the pipe plates and surrounded by heat carrier fluid, each pipe enclosing a filter cartridge detachably connected at its upper end to said pipe and radially spaced therefrom to form an annular space around each cartridge. A series of narrow channels are provided between the upper end of the annular space and the upper collecting chamber to impede the generation of dead zones inside the annular space and the collecting chamber. The main polymer melt stream flows inside the pipes through the filter cartridges. A very small amount of polymer passes through the channels, about 0.03 to 3.0 wt. % of the weight of the stream. This filtration apparatus and process provide accurate temperature control of the polymer melt and uniform residence time. Each individual filter cartridge is easily changed and cleaned without cooling down of the whole apparatus and it is not necessary to remove the whole filter assembly.

摘要翻译： 一种聚合物熔体过滤装置，包括一个封闭的直立圆柱形容器，由两个水平管板分成一个小的下部产品分配室，底部有一个产品入口，一个小的上部产品收集室，顶部有一个产品出口，一个大的中间 室连接到热载体流体回路。 多个紧密排列的热交换器管安装在管板之间的中间室中并被热载体流体包围，每个管包围一个过滤器滤芯，其上端可拆卸地连接到所述管并且与其径向间隔开以形成环形空间 每个墨盒。 在环形空间的上端和上部收集室之间设置有一系列窄通道，以阻止在环形空间和收集室内产生死区。 主要的聚合物熔体流在管道内流过滤芯。 非常少量的聚合物通过通道，约0.03-3.0wt。 流量的百分比。 该过滤装置和方法提供了聚合物熔体的精确温度控制和均匀的停留时间。 每个单独的滤筒容易地改变和清洁，而不会冷却整个设备，并且不需要去除整个过滤器组件。

公开(公告)号：US5484539A

公开(公告)日：1996-01-16

申请号：US413686

申请日：1995-03-30

申请人： Paul Tersi ,  Wolfgang Briegel ,  Dieter Cermak ,  Michael Schulze

发明人： Paul Tersi ,  Wolfgang Briegel ,  Dieter Cermak ,  Michael Schulze

IPC分类号： B01D29/11 ,  B01D35/18 ,  B29C47/68

CPC分类号： B29C47/68 ,  B01D29/114 ,  B01D35/18 ,  B01D2201/0446 ,  B29C47/0011 ,  B29C47/0021 ,  B29C47/081 ,  B29C47/687

摘要： A process for filtering polymer melt which minimizes the generation of dead zones in the filter and provides uniform residence time and accurate temperature control. The process is carried out in an apparatus comprising a plurality of heat exchanger pipes, each enclosing a filter cartridge surrounded by an annular space which terminates at its upper end in a plurality of narrow channels. The molten polymer is charged into the annular space and divided into primary and secondary streams. The primary stream flows through the filter cartridge and the secondary stream, which constitutes 0.03 to 3.0 weight percent of the weight of the combined streams, flows through the narrow channels, whereupon the streams are combined and discharged from the apparatus. The discharge temperature of the polymer is maintained within .+-.1.degree. C. of the charging temperature and the heat exchanger fluid enters the apparatus at a temperature within 1.degree. and 5.degree.C. of the temperature of the melt.

摘要翻译： 用于过滤聚合物熔体的方法，其使过滤器中死区的产生最小化并且提供均匀的停留时间和精确的温度控制。 该过程在包括多个热交换器管道的装置中进行，每个热交换器管道包围由环形空间围绕的过滤器滤芯，该环形空间在其上端终止于多个窄通道中。 将熔融的聚合物装入环形空间并分成一级和二级流。 主流体流过过滤器滤芯，并且构成混合流重量的0.03至3.0重量％的次流流过窄通道，于是流体从装置中组合并排出。 聚合物的排出温度保持在装入温度的+/- 1℃内，并且热交换器流体在熔体温度1℃和5℃的温度下进入设备。