Preliminary Design of a Loop Reactor for Bulk Propylene Polymerization
Preliminary Design of a Loop Reactor for Bulk Propylene Polymerization
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DOI：
10.1080/03602559008049844
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发表时间：
1990-06
影响因子：
--
通讯作者：
M. Ferrero;M. G. Chiovetta
中科院分区：
文献类型：
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作者：
M. Ferrero;M. G. Chiovetta
分析了丙烯本体聚合环流管式反应器设计初期存在的一些典型问题。特征变量的识别，和一个快捷的方法，初步估计反应器的尺寸。研究了工艺变量如催化活性、悬浮固体分数和平均粒度的影响。特别地，获得了反应器中的平均颗粒尺寸与入口和出口处的颗粒尺寸之间的关系。研究了反应器在不同操作条件下的行为，并确定了关键参数。大多数相关的结果都与反应器内颗粒尺寸的重要性有关。对于给定的环流反应器结构，最大产率和最大生产率这两个目标不能同时实现：虽然催化剂产率随反应器中平均颗粒尺寸的三次方而增加，但反应器中平均颗粒尺寸越小，催化剂产率越高。
Abstract Some typical problems in the early design stages of a tubular loop reactor for bulk propylene polymerization are analyzed. Characteristic variables are identified, and a shortcut method for the preliminary estimation of the reactor dimensions is developed. the influences of process variables such as catalytic activity, suspended solid fraction, and average particle size are studied. In particular, a relationship between the average particle size in the reactor and the particle size at both the inlet and the outlet is obtained. the behavior of the reactor under different operating conditions is studied, and critical parameters are identified. Most relevant results are related to the importance of the particle size inside the reactor. the two goals of maximum yield and maximum productivity for a given loop reactor configuration cannot be achieved simultaneously: While catalyst yield increases with the third power of the average particle size in the reactor, the smaller the average particle size in ...