改进气相聚合中生产的方法

文档序号:213896 发布日期:2021-11-05 浏览:21次 >En<

阅读说明:本技术 改进气相聚合中生产的方法 (Process for improving production in gas phase polymerization ) 是由 B·J·萨瓦特斯凯 B·R·格林哈尔希 J·A·穆巴斯 A·C·麦克金尼斯 R·W·艾默尔曼 于 2020-03-04 设计创作,主要内容包括:本发明的公开内容涉及在气相反应器中使用一种或多种冷凝剂(CAs)从烯烃单体生产聚烯烃的方法,和特别地涉及在用于聚合烯烃单体的气相反应器中控制冷凝相冷却。该方法包括在比值下向反应器中引入第一和第二冷凝剂,该比值通过下述步骤确定:确认第一冷凝剂的粘附极限,计算涉及第一冷凝剂和第二冷凝剂的当量因子,确认总体可允许冷凝剂组合物,和计算被移除且被第二冷凝剂替代的第一冷凝剂的用量。该方法可进一步包括计算气相组合物的露点极限,该气相组合物包含烯烃单体以及第一和第二冷凝剂;和确定引入包含烯烃单体和冷凝剂组合物的混合物是否会超过计算的露点极限。(The present disclosure relates to a process for producing polyolefins from olefin monomers using one or more Condensing Agents (CAs) in a gas phase reactor, and in particular to controlling condensed phase cooling in a gas phase reactor used to polymerize olefin monomers. The method includes introducing first and second condensing agents into the reactor at a ratio determined by: the method includes identifying an adhesion limit of a first condensing agent, calculating an equivalence factor related to the first condensing agent and a second condensing agent, identifying an overall allowable condensing agent composition, and calculating an amount of the first condensing agent to be removed and replaced with the second condensing agent. The method can further include calculating a dew point limit for a gas phase composition, the gas phase composition comprising an olefin monomer and first and second condensing agents; and determining whether introduction of the mixture comprising olefin monomer and condensing agent composition would exceed the calculated dew point limit.)

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