Reachability of particle size distribution in semibatch emulsion polymerization
Reachability of particle size distribution in semibatch emulsion polymerization
复制标题
半间歇乳液聚合中粒度分布的可达性
DOI：
10.1002/aic.10225
复制
发表时间：
2004
期刊：
影响因子：
3.7
通讯作者：
F. Doyle
中科院分区：
文献类型：
--
作者：
Yang Wang;F. Doyle
可达性分析在确定复杂过程系统可实现的终端产品时至关重要。乳液聚合是生产各种产品的一种经济的重要方法，在乳液聚合中，粒径分布（PSD）是所生产乳胶的一项重要性能。然而，人口平衡建模框架并不能直接解决非线性分布式系统的可达性分析问题。本文介绍了一种基于编程的方法，用于种群平衡模型描述的一般颗粒系统的最终PSD的可达性分析。应用于半批量苯乙烯均聚体系，定义了名义和扰动情况下的可达区域，最终psd具有多高斯分布特征。敏感性研究揭示了确定可实现的最终产品的限制因素，并制定了定量标准。在中途校正的情况下，可达区域的演变揭示了在批量控制中遇到的困难，并显示了在有限的在线测量条件下可实现的最佳控制性能。©2004美国化学工程师学会化学工程学报，50:3049-3059,2004
Reachability analysis is critical in the determination of achievable end-point products for complex process systems. In emulsion polymerization, an economically important method of producing various products, particle size distribution (PSD) is an important property of the latex produced. However, the population balance modeling framework does not yield direct solutions to reachability analysis for the resulting nonlinear distributed systems. In this article, a programming-based approach is introduced for the reachability analysis of the final PSD for general particulate systems described by population balance models. In the application to a semibatch styrene homopolymerization system, the reachable region is defined for both the nominal and perturbed cases, with final PSDs characterized as multi-Gaussian distributions. Sensitivity studies reveal the limiting factors in determining the achievable final products, and quantitative criteria are developed. The evolution of the reachable region in the case of midcourse correction reveals the difficulties encountered during in-batch control, and shows the best control performance achievable given the limited on-line measurements. © 2004 American Institute of Chemical Engineers AIChE J, 50: 3049–3059, 2004