知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.014 秒)

    Gas phase polymerization and method of controlling same
    1.
    发明申请
    Gas phase polymerization and method of controlling same 有权
    气相聚合及其控制方法

    公开(公告)号：US20070043174A1

    公开(公告)日：2007-02-22

    申请号：US10558941

    申请日：2004-05-26

    申请人： John Parrish ,  Glenn Lambert

    发明人： John Parrish ,  Glenn Lambert

    IPC分类号： C08G85/00

    CPC分类号： C08F10/00 ,  C08F210/16 ,  C08F2400/02 ,  Y02P20/582 ,  Y10S526/901 ,  C08F2/00 ,  C08F2/34 ,  C08F210/14

    摘要： A process for controlling a continuous gas phase exothermic process in a reactor comprising: (i) effecting a gas phase exothermic reaction under a set of operating conditions in the presence of a cooling agent, the cooling agent having a pre-selected concentration and feed rate of an induced cooling agent; (ii) determining a maximum production rate (I) without regard to limitations due to the cooling agent under the operating conditions; (iii) determining a maximum production rate (II) with regard to limitations due to the cooling agent under the operating conditions; (iv) calculating an optimal concentration of the induced cooling agent such that the difference between (I) and (II) is minimized; and (v) adjusting the feed rate of the induced cooling agent to achieve the concentration value calculated in (iv).

    摘要翻译： 一种用于控制反应器中的连续气相放热过程的方法，包括：（i）在冷却剂存在下在一组操作条件下进行气相放热反应，所述冷却剂具有预先选择的浓度和进料速率 的诱导冷却剂; （ii）确定最大生产率（I），而不考虑在操作条件下由于冷却剂的限制; （iii）确定在运行条件下由冷却剂引起的限制的最大生产率（II）; （iv）计算诱导的冷却剂的最佳浓度，使得（I）和（II）之间的差异最小化; 和（v）调节诱导的冷却剂的进料速率以达到（iv）中计算的浓度值。

    Method for reducing off-grade product production during reaction transitions
    3.
    发明申请
    Method for reducing off-grade product production during reaction transitions 有权
    在反应过程中减少产品不合格产品的方法

    公开(公告)号：US20060276603A1

    公开(公告)日：2006-12-07

    申请号：US11145349

    申请日：2005-06-03

    申请人： Ivan Hartley ,  John Parrish ,  Rich Stolz

    发明人： Ivan Hartley ,  John Parrish ,  Rich Stolz

    IPC分类号： C08F2/00 ,  C08G85/00

    CPC分类号： B01J8/1809 ,  B01J19/0033 ,  B01J2208/00061 ,  B01J2208/00274 ,  C08F10/00 ,  C08F110/02 ,  C08F2400/02 ,  Y02P20/582 ,  Y10S526/901 ,  C08F2/00

    摘要： In some embodiments, a method for determining initial conditions for a transition from an initial reaction to a target reaction to minimize (or substantially minimize) the amount of off-grade material produced during the transition, and optionally also process control variables for implementing the transition. Some embodiments also include the steps of setting the reaction conditions to determined initial conditions and then implementing the transition. In some embodiments, a product property that can cause production of more off-grade product during the transition than can any other of the properties is identified as a primary property, and process control variables for implementing the transition are determined so that the product produced during the transition goes off-grade due to the primary property, and due to each of at least one other product property, at the same or substantially the same time, and preferably also so that each non-primary property reaches a value compliant with the target specification set as late as possible but not later than the time the primary property reaches a value compliant with the target specification set.

    摘要翻译： 在一些实施方案中，确定从初始反应向目标反应转变的初始条件的方法，以使（或基本上最小化）过渡期间产生的越级材料的量最小化（或基本上最小化），以及用于实现转变的过程控制变量 。 一些实施方案还包括将反应条件设定为确定的初始条件，然后实施转化的步骤。 在一些实施方案中，可以在过渡期间产生更多的劣质产品的产品性能比任何其他性质被确定为主要性质，并且确定用于实施转化的过程控制变量，使得在 由于主要属性，并且由于至少一个其他产品属性中的每一个在相同或基本上相同的时间，并且优选地还使得每个非主要属性达到符合目标的值，则转换变得不成熟 规范设置尽可能晚但不晚于主属性达到符合目标规范集的值的时间。