公开(公告)号：US06710142B2

公开(公告)日：2004-03-23

申请号：US10311212

申请日：2002-12-16

申请人： Yasunobu Kaneko ,  Takamichi Matsumura ,  Tomoo Nambu ,  Itaru Matsuhiro

发明人： Yasunobu Kaneko ,  Takamichi Matsumura ,  Tomoo Nambu ,  Itaru Matsuhiro

IPC分类号： C08F200

CPC分类号： B01F15/00954 ,  B01F7/16

摘要： There is provided a method for extracting a gaseous fluid which comprises extracting the gaseous fluid through fluid extraction ports set up on the top face portion of a vertical-type agitation tank equipped inside with an agitator, wherein two fluid extraction ports are set up at positions approximately symmetrical about the center of the top face portion of the vertical-type agitation tank, or wherein at least three fluid extraction ports are set up each at a vertex of an approximately regular polygon having the central point identical with the center of the top face portion of the vertical-type agitation tank. It is made possible by the foregoing method to suppress the entrainment of fine particles and mist, curtail clogging of a filter and the like, contrive uniformization for the temperature of the content and at the same time, ensure a stable operation by extracting a gaseous fluid through a plurality of extraction ports each set up at a specific position on the top face of a vertical-type agitation tank.

摘要翻译： 提供了一种用于提取气态流体的方法，该方法包括通过设置在内部具有搅拌器的立式搅拌槽的顶面部分上的流体抽出口提取气体流体，其中两个流体抽出口设置在位置 大致对称于垂直式搅拌槽的顶面部分的中心，或者其中至少三个流体抽出口被设置在具有与顶面的中心相同的中心点的大致正多边形的顶点处 垂直式搅拌槽的一部分。 通过上述方法可以抑制微粒和雾的夹带，减少过滤器等的堵塞，使内容物的温度均匀化，同时通过提取气态流体来确保稳定的操作 通过多个提取口，每个提取口设置在垂直型搅拌槽的顶面上的特定位置。

公开(公告)号：US06596824B2

公开(公告)日：2003-07-22

申请号：US09926543

申请日：2001-11-16

申请人： Tomoo Nambu ,  Masao Aida ,  Masatoshi Toda

发明人： Tomoo Nambu ,  Masao Aida ,  Masatoshi Toda

IPC分类号： C08F240

CPC分类号： C08F10/00 ,  C08F210/06 ,  Y10S526/901 ,  C08F2/001 ,  C08F2/002 ,  C08F2/34 ,  C08F210/16

摘要： Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on the wall of reactors and around stirring blades is prevented. The method enables continuous and stable production of high-quality polyolefins, with no pipe line clogging. The method is characterized by a specific supply mode of feeding a catalyst activity retardant such as alcohol into polymerization reactors. Specifically, the retardant is fed into the vapor phase in a polymerization reactor and into the powder phase therein through its side wall. Preferably, the retardant is fed into the powder phase through a plurality of sites of the side wall of the reactor.

摘要翻译： 提供了一种用于生产聚烯烃的连续气相聚合方法。 在该方法中，防止形成聚合物附聚物和聚集体，并且防止在反应器壁和搅拌叶片周围的聚合物沉积。 该方法能够连续稳定地生产高品质的聚烯烃，没有管道堵塞。 该方法的特征在于将催化剂活性阻滞剂如醇进料到聚合反应器中的特定供给模式。 具体地说，阻聚剂通过其侧壁在聚合反应器中进入气相并进入粉末相。 优选地，阻燃剂通过反应器侧壁的多个部位进料到粉末相中。