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公开(公告)号：US08071699B2
公开(公告)日：2011-12-06
申请号：US12442157
申请日：2006-09-21
申请人： John R. Parrish , Mark L. Nelson
发明人： John R. Parrish , Mark L. Nelson
CPC分类号： G05B13/042
摘要： The invention is directed to a polymerization system and method of controlling resin properties during the production of bimodal and multimodal polymer compositions using at least one manipulated variable to minimize dynamic deviations from polymer characteristics. In particular embodiments, the method of control includes determining a property of the resin based on a current and/or previous values or estimates or process variables or polymer characteristics. In this manner the control actions serve to reduce process upsets or facilitate in transitioning to a new product or grade to reduce the amount of off-grade resin material produced during transition or during steady state manufacture.
摘要翻译： 本发明涉及使用至少一个操作变量来制备双峰和多峰聚合物组合物期间控制树脂性能的聚合体系和方法，以使与聚合物特性的动态偏差最小化。 在具体实施方案中，控制方法包括基于当前和/或先前的值或估计或过程变量或聚合物特性确定树脂的性质。 以这种方式，控制动作用于减少过程紊乱或促进转换到新产品或等级，以减少过渡期间或在稳态制造期间产生的脱级树脂材料的量。
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公开(公告)号：US20090177439A1
公开(公告)日：2009-07-09
申请号：US12226291
申请日：2007-04-13
申请人： Paul K. Samples , John R Parrish , Debbie R. Rath , Tom J. McNeil
发明人： Paul K. Samples , John R Parrish , Debbie R. Rath , Tom J. McNeil
CPC分类号： G05B23/024 , G05B23/0272
摘要： The invention provides a novel method of monitoring a process. The method also has the ability to take predetermined actions based on the monitored data. These actions avoid or mitigate process abnormalities or upsets that might impact product quality, production, and/or process efficiencies. The method includes the steps of: obtaining at least one input process variable; determining a comparative process value based on the at least one input process variable using a first method having a first time-based weighting function; determining an expected process value based on the at least one input process variable using a second method having a second time-based weighting function; determining a first deviation value based on the at least one input process variable or historical data; calculating a limit range having a maximum limit and a minimum limit using the expected process value and the first deviation value; and comparing the comparative process value to the limit range.
摘要翻译： 本发明提供了一种监测过程的新方法。 该方法还具有基于所监视的数据采取预定动作的能力。 这些措施可以避免或减轻可能影响产品质量，生产和/或过程效率的过程异常或烦恼。 该方法包括以下步骤：获得至少一个输入过程变量; 使用具有第一时间加权函数的第一方法，基于所述至少一个输入过程变量来确定比较过程值; 使用具有第二基于时间的加权函数的第二方法，基于所述至少一个输入过程变量确定期望过程值; 基于所述至少一个输入过程变量或历史数据确定第一偏差值; 使用所述预期过程值和所述第一偏差值来计算具有最大极限和最小极限的极限范围; 并将比较过程值与极限范围进行比较。
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公开(公告)号：US20080119621A1
公开(公告)日：2008-05-22
申请号：US11666723
申请日：2005-10-18
IPC分类号： C08F2/01
CPC分类号： C08F2/34 , C08F210/16 , Y10S526/901 , C08F2/00 , C08F210/14
摘要： Embodiments of the invention provide a method of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable. The first and second manipulated variables can include process variables such as the fluidized bed weight, the catalyst concentration, the concentration of one or more monomers, the flow of one or more comonomers, the ratio of one comonomer to another comonomer, the activator concentration, the ratio of an activator to selectivity control agent, the concentration of a chain transfer agent, and the retardant concentration.
摘要翻译： 本发明的实施方案提供了一种控制气相聚合方法的方法。 该方法包括确定聚合过程的控制变量（例如生产速率）与控制变量的期望值之间的差; 调整或维持第一操纵变量以至少部分地补偿控制变量与期望值之间的差异; 以及调整或维持第二操纵变量以至少部分地补偿调整或维持第一操纵变量的效果。 第一和第二操作变量可以包括流化床重量，催化剂浓度，一种或多种单体的浓度，一种或多种共聚单体的流动，一种共聚单体与另一共聚单体的比例，活化剂浓度， 活化剂与选择性控制剂的比例，链转移剂的浓度和阻聚剂浓度。
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公开(公告)号：US5627242A
公开(公告)日：1997-05-06
申请号：US623016
申请日：1996-03-28
申请人： Lance L. Jacobsen , Kiu H. Lee , John R. Parrish
发明人： Lance L. Jacobsen , Kiu H. Lee , John R. Parrish
CPC分类号： B01J8/1809 , C08F10/00 , B01J2208/00017 , B01J2208/00539 , B01J2208/0061 , C08F2400/02 , Y10S526/901
摘要： Control of a gas phase polymerization reactor is performed with the product melt index, the reaction temperature, and the partial pressure of the controlling reactant.
摘要翻译： 用产物熔体指数，反应温度和控制反应物的分压进行气相聚合反应器的控制。
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公开(公告)号：US20120136482A1
公开(公告)日：2012-05-31
申请号：US13316136
申请日：2011-12-09
CPC分类号： C08F2/34 , C08F210/16 , Y10S526/901 , C08F2/00 , C08F210/14
摘要： The present invention provides methods of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable. The first and second manipulated variables can include process variables such as the fluidized bed weight, the catalyst concentration, the concentration of one or more monomers, the flow of one or more comonomers, the ratio of one comonomer to another comonomer, the activator concentration, the ratio of an activator to selectivity control agent, the concentration of a chain transfer agent, and the retardant concentration.
摘要翻译： 本发明提供了控制气相聚合方法的方法。 该方法包括确定聚合过程的控制变量（例如生产速率）与控制变量的期望值之间的差; 调整或维持第一操纵变量以至少部分地补偿控制变量与期望值之间的差异; 以及调整或维持第二操纵变量以至少部分地补偿调整或维持第一操纵变量的效果。 第一和第二操作变量可以包括流化床重量，催化剂浓度，一种或多种单体的浓度，一种或多种共聚单体的流动，一种共聚单体与另一共聚单体的比例，活化剂浓度， 活化剂与选择性控制剂的比例，链转移剂的浓度和阻聚剂浓度。
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公开(公告)号：US08093341B2
公开(公告)日：2012-01-10
申请号：US11666723
申请日：2005-10-18
IPC分类号： C08F2/34 , C08F210/06
CPC分类号： C08F2/34 , C08F210/16 , Y10S526/901 , C08F2/00 , C08F210/14
摘要： Embodiments of the invention provide a method of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable. The first and second manipulated variables can include process variables such as the fluidized bed weight, the catalyst concentration, the concentration of one or more monomers, the flow of one or more comonomers, the ratio of one comonomer to another comonomer, the activator concentration, the ratio of an activator to selectivity control agent, the concentration of a chain transfer agent, and the retardant concentration.
摘要翻译： 本发明的实施方案提供了一种控制气相聚合方法的方法。 该方法包括确定聚合过程的控制变量（例如生产速率）与控制变量的期望值之间的差; 调整或维持第一操纵变量以至少部分地补偿控制变量与期望值之间的差异; 以及调整或维持第二操纵变量以至少部分地补偿调整或维持第一操纵变量的效果。 第一和第二操作变量可以包括流化床重量，催化剂浓度，一种或多种单体的浓度，一种或多种共聚单体的流动，一种共聚单体与另一共聚单体的比例，活化剂浓度， 活化剂与选择性控制剂的比例，链转移剂的浓度和阻聚剂浓度。
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公开(公告)号：US20090214395A1
公开(公告)日：2009-08-27
申请号：US12038163
申请日：2008-02-27
CPC分类号： F27B15/18 , B01J8/003 , B01J8/0035 , B01J8/1872 , B01J2208/0061 , B01J2208/00725 , B01J2208/00761 , B01J2208/00769 , C08F10/00 , C08F2400/02 , C08F2/34
摘要： A method and apparatus are disclosed for controlling product discharge from a fluidized bed reactor and for minimizing the loss of the unreacted monomer in the fluidizing gas upon removing the solid polymer product from the reactor. The method and apparatus utilize at least one detector in the product tank or its vent line and a control system in communication with the detector and the product tank fill valve, along with certain algorithms, to adjust by an iterative process, the product discharge time, thereby maximizing resin fill in the product tank and minimizing the lost reactor gas volume.
摘要翻译： 公开了一种用于控制来自流化床反应器的产物排放并且在从反应器中除去固体聚合物产物时使流化气体中的未反应单体的损失最小化的方法和装置。 该方法和装置利用产品罐或其排气管线中的至少一个检测器和与检测器和产品罐填充阀连通的控制系统以及某些算法，通过迭代过程来调整产品排放时间， 从而使产品罐中的树脂填充最大化并使反应堆的气体体积减少到最小。
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公开(公告)号：US5589630A
公开(公告)日：1996-12-31
申请号：US429185
申请日：1995-04-26
申请人： Patrick M. Wiegand , John F. Fisher , John R. Parrish , Elizabeth S. Ballard , Courtland P. Sears, III , George W. Schwarz, Jr. , Cloid R. Smith, III
发明人： Patrick M. Wiegand , John F. Fisher , John R. Parrish , Elizabeth S. Ballard , Courtland P. Sears, III , George W. Schwarz, Jr. , Cloid R. Smith, III
CPC分类号： G01N30/68 , G01N30/30 , G01N2030/025 , G01N2030/3007 , G01N2030/3076 , G01N2030/8886
摘要： The present invention is directed to methods and apparatus for conducting gas chromatography more rapidly than previously disclosed. By means of the present invention the time necessary to conduct a gas chromatographic analysis can be reduced by more than 50%. The methods and apparatus employed reduce system dead volumes to prevent band broadening and mixing of the sample components as the gas sample is analyzed. The present invention also relates to the apparatus described above as applied to controlling chemical, refining, and other processes.
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公开(公告)号：US08862438B2
公开(公告)日：2014-10-14
申请号：US12670885
申请日：2008-07-24
申请人： Jeffrey B. Drabish , John R. Parrish , Marcel Schaefer , Ivan J. Hartley , Paul K. Samples , Mark L. Nelson
发明人： Jeffrey B. Drabish , John R. Parrish , Marcel Schaefer , Ivan J. Hartley , Paul K. Samples , Mark L. Nelson
CPC分类号： G06F19/704 , Y10T436/12
摘要： A method for improving the prediction of polymer properties and a system having improved polymer property prediction capabilities is provided. The method for improving the prediction of polymer properties comprises: (1) providing a polymer; (2) providing a prediction model; (3) utilizing said prediction model to define an average polymer property prediction value; (4) determining a feasible range; (5) measuring one or more properties of said polymer; (6) determining whether said one or measured polymer properties are within said feasible range: (7) validating said one or more measured polymer properties if said one or more measured polymer properties fall within the feasible range or invalidating said one or more measured polymer properties if said one or more measured polymer properties fall outside of the feasible range; (8) optionally updating said prediction model; (9) repeating said previous steps at least one or more times; and (10) thereby improving the prediction of polymer properties.
摘要翻译： 提供了改进聚合物性能预测的方法和具有改进的聚合物性能预测能力的体系。 改进聚合物性能预测的方法包括：（1）提供聚合物; （2）提供预测模型; （3）利用所述预测模型来定义平均聚合物性质预测值; （4）确定可行范围; （5）测量所述聚合物的一种或多种性质; （6）确定所述一种或测量的聚合物性质是否在所述可行范围内：（7）如果所述一种或多种测量的聚合物性能落在可行范围内或者使所述一种或多种测量的聚合物性质无效，则验证所述一种或多种测量的聚合物性质 如果所述一种或多种测量的聚合物性质落在可行范围之外; （8）可选地更新所述预测模型; （9）至少一次以上重复上述步骤; 和（10），从而改善聚合物性质的预测。
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公开(公告)号：US08354481B2
公开(公告)日：2013-01-15
申请号：US13316136
申请日：2011-12-09
IPC分类号： C08F2/34 , C08F210/06
CPC分类号： C08F2/34 , C08F210/16 , Y10S526/901 , C08F2/00 , C08F210/14
摘要： The present invention provides methods of controlling a gas-phase polymerization process. The method includes determining a difference between a control variable of the polymerization process, such as the production rate, and the desired value of the control variable; adjusting or maintaining a first manipulated variable to at least partially compensate for the difference between the control variable and the desired value; and adjusting or maintaining a second manipulated variable to at least partially compensate for the effect of adjusting or maintaining the first manipulated variable. The first and second manipulated variables can include process variables such as the fluidized bed weight, the catalyst concentration, the concentration of one or more monomers, the flow of one or more comonomers, the ratio of one comonomer to another comonomer, the activator concentration, the ratio of an activator to selectivity control agent, the concentration of a chain transfer agent, and the retardant concentration.
摘要翻译： 本发明提供了控制气相聚合方法的方法。 该方法包括确定聚合过程的控制变量（例如生产速率）与控制变量的期望值之间的差; 调整或维持第一操纵变量以至少部分地补偿控制变量与期望值之间的差异; 以及调整或维持第二操纵变量以至少部分地补偿调整或维持第一操纵变量的效果。 第一和第二操作变量可以包括流化床重量，催化剂浓度，一种或多种单体的浓度，一种或多种共聚单体的流动，一种共聚单体与另一共聚单体的比例，活化剂浓度， 活化剂与选择性控制剂的比例，链转移剂的浓度和阻聚剂浓度。
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