Computational Modeling of the Continuous Separation of a Molten Polymer Mixture in a Centrifugal Field

IF 1.8 4区 工程技术 Q3 POLYMER SCIENCE
V. Medvid, H. Steiner, C. Irrenfried, M. Feuchter, G. Brenn
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引用次数: 0

Abstract

A technique for separating molten polymer blends is investigated computationally. The device includes a rotating cylinder, separating the mixture components with different densities by the centrifugal force. Molten LDPE (Low-Density Poly(Ethylene)) and PET (Poly(Ethylene) Terephthalate) mixtures are investigated. The computational modeling is intended to evaluate the feasibility of such a technique at the time and length scales studied. A dispersed mixture model accounts for the immiscibility of the mixture components. The CFD simulations provide the field distributions of the flow field variables and of the mixture component fractions. The outlet composition and separation efficiency in the steady-state process, and the different process parameter influences on the process result, are studied. The polymer system at hand represents blends of postconsumer plastics. The study can therefore contribute to the development of a novel method for plastic waste recycling. With continuous feed and extraction of the polymer streams, the process can be automated.

熔融聚合物混合物在离心场中连续分离的计算模型
对熔融聚合物共混物的分离技术进行了计算研究。该装置包括旋转圆筒,通过离心力分离不同密度的混合组分。研究了熔融LDPE(低密度聚乙烯)和PET(聚(乙烯)对苯二甲酸酯)混合物。计算模型旨在评估这种技术在所研究的时间和长度尺度上的可行性。分散混合模型解释了混合组分的不混相性。计算流体力学模拟提供了流场变量和混合组分分数的场分布。研究了稳态过程中出口组成和分离效率,以及不同工艺参数对分离效果的影响。手头的聚合物系统代表了消费后塑料的混合物。因此,这项研究有助于开发一种回收塑料废物的新方法。随着聚合物流的连续进料和提取,该过程可以自动化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Macromolecular Theory and Simulations
Macromolecular Theory and Simulations 工程技术-高分子科学
CiteScore
3.00
自引率
14.30%
发文量
45
审稿时长
2 months
期刊介绍: Macromolecular Theory and Simulations is the only high-quality polymer science journal dedicated exclusively to theory and simulations, covering all aspects from macromolecular theory to advanced computer simulation techniques.
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