公开(公告)号：US20090234081A1

公开(公告)日：2009-09-17

申请号：US12407019

申请日：2009-03-19

申请人： Daniel N. Thomas, JR. ,  Eric J. Markel

发明人： Daniel N. Thomas, JR. ,  Eric J. Markel

IPC分类号： C08F2/00

CPC分类号： C08F210/16 ,  C08F2400/02 ,  C08F2/005 ,  C08F2/00 ,  C08F2/34 ,  C08F210/14 ,  C08F2500/12

摘要： A method for monitoring a polymer resin-producing polymerization reaction in a fluid bed reactor, including by determining in on-line fashion a maximum diluent (e.g., ICA) concentration and an optimal diluent (e.g., ICA) concentration in the reactor, whereby performing the reaction with diluent (e.g., ICA) concentration less than the maximum diluent concentration ensures an acceptably low risk that the resin in the reactor in the presence of condensable diluent gas will reach a condition of limiting stickiness. Preferably, the optimal diluent concentration maximizes production rate subject to relevant constraints. The method can also include at least one of the steps of controlling the reaction to achieve a desired production rate by controlling diluent (e.g., ICA) concentration, and controlling the reaction to prevent reactor temperature from reaching a reduced melt reference temperature at least substantially equal to a dry melt reference temperature minus a temperature depression value by which the dry melt reference temperature is depressed by presence of at least one condensable diluent gas with the resin in the reactor.

摘要翻译： 一种用于监测流化床反应器中聚合物树脂生成聚合反应的方法，包括通过以在线方式确定反应器中的最大稀释剂（例如，ICA）浓度和最佳稀释剂（例如ICA）浓度，从而进行 与稀释剂浓度相比，稀释剂（例如，ICA）浓度的反应确保了在可冷凝的稀释气体存在下反应器中的树脂将达到极限粘性的可接受的低风险。 优选地，最佳稀释剂浓度最大化生产率受制于相关的约束。 该方法还可以包括以下步骤中的至少一个：通过控制稀释剂（例如，ICA）浓度来控制反应以达到所需的生产速率，并控制反应以防止反应器温度达到至少基本相等的降低的熔融参考温度 到干熔体参考温度减去通过在反应器中存在至少一种可冷凝稀释气体与树脂而使干熔体参考温度下降的温度下降值。

公开(公告)号：US20110034657A1

公开(公告)日：2011-02-10

申请号：US12935415

申请日：2009-04-21

申请人： Fathi D. Hussein ,  Ping Cai ,  Jose F. Cevallos-Candau ,  Ian D. Burdett ,  W. Scott Hamilton ,  Daniel N. Thomas, JR.

发明人： Fathi D. Hussein ,  Ping Cai ,  Jose F. Cevallos-Candau ,  Ian D. Burdett ,  W. Scott Hamilton ,  Daniel N. Thomas, JR.

IPC分类号： C08F210/00 ,  C08F210/02 ,  C08F210/06 ,  C08F210/08 ,  C08F210/14 ,  B01J8/18

CPC分类号： B01J8/1863 ,  B01J8/1827 ,  B01J8/388 ,  B01J2208/00176 ,  B01J2208/00212 ,  B01J2208/00292 ,  B01J2208/00548 ,  C08F110/06 ,  C08F210/16 ,  Y10S526/918 ,  C08F2/34 ,  C08F2500/16 ,  C08F2500/15 ,  C08F210/14 ,  C08F2500/12

摘要： A process for the polymerization of olefin's, including: introducing an olefin and a polymerization catalyst into a polymerization reactor to form a polyolefin, the polymerization reactor including: a fluidized bed region having a top and a bottom; and a motive bed region; wherein a first end of the motive bed region is fluidly connected to the top of the fluidized bed region; and wherein a second end of the motive bed region is fluidly connected to the bottom of the fluidized bed region; and wherein a diameter of the fluidized bed region is greater than a diameter of the motive bed region; circulating at least a portion of the olefin, the catalyst, and the polyolefin through the fluidized bed region and the motive bed region; maintaining a dense-phase fluidized bed within the fluidized bed region; recovering polyolefin from the fluidized bed region, is provided. A reactor system directed to the process is also provided.

摘要翻译： 一种烯烃聚合方法，包括：将烯烃和聚合催化剂引入聚合反应器中以形成聚烯烃，所述聚合反应器包括：具有顶部和底部的流化床区域; 和动床区; 其中所述动力床区域的第一端流体地连接到所述流化床区域的顶部; 并且其中所述动力床区域的第二端流体地连接到所述流化床区域的底部; 并且其中所述流化床区域的直径大于所述动力床区域的直径; 通过流化床区域和动力床区域使至少一部分烯烃，催化剂和聚烯烃循环; 在流化床区域内保持密相流化床; 提供了从流化床区域回收聚烯烃。 还提供了针对该方法的反应器系统。