-
公开(公告)号:US20070078238A1
公开(公告)日:2007-04-05
申请号:US11241016
申请日:2005-09-30
申请人: David Burns , Donald Verser , Elizabeth Benham , Max McDaniel , John Hottovy , Dale Zellers , Penny Zellers , Clay Thurman , David Lockman , John Lawmaster , Matthew Haberly , Thomas Smith , Jerry Lanier , Matthew Thorn
发明人: David Burns , Donald Verser , Elizabeth Benham , Max McDaniel , John Hottovy , Dale Zellers , Penny Zellers , Clay Thurman , David Lockman , John Lawmaster , Matthew Haberly , Thomas Smith , Jerry Lanier , Matthew Thorn
CPC分类号: G05B13/048 , B01J8/0015 , B01J19/0006 , B01J19/0033 , B01J19/1837 , B01J19/2435 , B01J2219/00038 , B01J2219/0004 , B01J2219/00164 , B01J2219/00184 , B01J2219/00186 , B01J2219/002 , B01J2219/00218 , B01J2219/00231 , C08F2/00 , C08F10/00 , G05B13/042 , Y10S526/943
摘要: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
摘要翻译: 在聚合系统中选择,传送和测量多个组分。 控制系统将系统变量调整到所需的值。 在引入聚合反应器之前,可以将部分成分送入预接触器。 催化剂组分浓度和停留时间在预接触器中严格控制以影响产品性能。 预接触器可以是CSTR或塞流预接触器的单个或多个组合。
-
公开(公告)号:US20060159595A1
公开(公告)日:2006-07-20
申请号:US11384629
申请日:2006-03-20
申请人: John Hottovy , Dale Zellers , Robert Franklin
发明人: John Hottovy , Dale Zellers , Robert Franklin
CPC分类号: C08F2/01 , B01J8/0015 , B01J8/005 , B01J8/20 , B01J8/226 , B01J8/382 , B01J19/006 , B01J19/0066 , B01J19/1837 , B01J19/1875 , B01J2219/00094 , B01J2219/00114 , B01J2219/00189 , B01J2219/00777 , C08F6/003 , C08F10/00 , C08F10/02 , C08F10/06 , C08F110/06 , C08F210/16 , C08L23/10 , C08F2/14 , C08F210/14 , C08F210/08
摘要: An olefin polymerization process and apparatus wherein a fluid slurry comprising monomer, diluent and catalyst is circulated in a continuous loop reactor by two or more pumps. The process and apparatus allow operating the reaction at significantly higher solids content in the circulating fluid slurry. In a preferred embodiment, the fluid slurry is circulated by two impellers arranged so that the downstream impeller benefits from the rotational energy imparted by the upstream impeller. An olefin polymerization process operating at higher reactor solids by virtue of more aggressive circulation has improved efficiencies, particularly in larger-volume reactors.
-
公开(公告)号:US20060045823A1
公开(公告)日:2006-03-02
申请号:US10928047
申请日:2004-08-27
申请人: Benjamin Shaw , John Hottovy , Dale Zellers
发明人: Benjamin Shaw , John Hottovy , Dale Zellers
CPC分类号: C08F10/02 , B01J19/0006 , B01J19/002 , B01J19/1837 , B01J2208/00734 , B01J2219/00063 , B01J2219/00094 , B01J2219/00191 , B01J2219/00247 , B01J2219/00254 , C08F110/02 , C08F2400/02 , Y02P20/582 , Y10S526/901 , C08F2/002 , C08F2/14 , C08F2/00 , C08F2500/24
摘要: Techniques are provided for the prevention of reactor fouls in polymerization reactors. A technique is provided for limiting polymer particle size to prevent or limit the occurrence of reactor fouls associated with large polymer particles. A technique is also provided for measuring reactor temperature at one or more local hot spots of the reactor and for controlling the polymerization reaction based upon these temperature measurements. In particular, control of the reaction may be based on the hottest temperature, such that the hottest temperature in the reactor is maintained within the reactor fouling curve. A technique is also discussed for predicting reactor fouls by using statistical analyses, such as periodogram analysis, to identify leading indicators of impending fouls. Preventative measures may be performed upon identification of such a leading indicator. In addition, the statistical analyses may be used to identify catalysts having less propensity to foul.
摘要翻译: 提供了防止聚合反应堆中反应堆犯规的技术。 提供了一种限制聚合物粒度以防止或限制与大聚合物颗粒相关的反应堆犯规的发生的技术。 还提供了用于测量反应器的一个或多个局部热点处的反应器温度并基于这些温度测量来控制聚合反应的技术。 特别地,反应的控制可以基于最热的温度,使得反应器中最热的温度保持在反应器结垢曲线内。 还讨论了一种通过使用统计分析(如周期图分析)来确定即将发生的犯规的领先指标来预测反应堆犯规的技术。 在确定此类领先指标时,可采取预防措施。 此外,统计学分析可用于鉴定具有较小的污染倾向的催化剂。
-
-