A MODEL AND MEASUREMENT TECHNIQUE FOR MICROMIXING IN COPOLYMERIZATION REACTORS

被引：19

作者：

ATIQULLAH, M ^{[1
]}

NAUMAN, EB ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT CHEM ENGN,TROY,NY 12180

来源：

CHEMICAL ENGINEERING SCIENCE | 1990年 / 45卷 / 05期

关键词：

D O I：

10.1016/0009-2509(90)87119-D

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A new model is presented for copolymer composition distributions in a stirred tank reactor with unmixed feed streams. The new model is a variant which now explicitly considers the effects of backmixing on the popular, lamellar stretch model. It can also be regarded as an application to time-dependent slab geometries of the droplet diffusion model. An experimental technique based on gradient elution thin-layer chromatography was developed to measure the copolymer composition distribution in styrene-methyl methacrylate copolymers. Results for a laboratory-scale, stirred tank reactor showed good agreement with the statistical or Stockmeyer distribution, thus indicating a close approach to perfect mixing in this small vessel. An upper limit on the initial striation thickness was calculated to be 1 mm. © 1990.

引用

页码：1267 / 1279

页数：13

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