𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Diagnosis of Abnormal Situations in a Continuous Solution Polymerization Reactor

✍ Scribed by Oscar A. Z. Sotomayor; Darci Odloak; Reinaldo Giudici

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
278 KB
Volume
16
Category
Article
ISSN
1022-1344

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This work presents results on the problem of robust on‐line diagnosis of abnormal situations in the case of the free‐radical solution polymerization of styrene in a continuous well‐mixed reactor operating under feedback control. The control system is constituted of a model predictive control strategy in conjunction with a ratio control law. The proposed fault diagnosis system is based on an open‐loop approach, which uses a linearized model of the polymerization process for the implementation of a bank of reduced‐order unknown input observers. Each observer is designed to detect changes in a particular process parameter, external disturbance or malfunctioning of sensors and actuators. Fault isolation is obtained through a structured residual approach; meanwhile, fault estimation is performed using the degree of freedom remaining in the observer design. The effectiveness of the proposed technique is verified through numerical simulations carried out on a well‐defined industrial styrene polymerization benchmark.

magnified image

📜 SIMILAR VOLUMES

Polymerization reactor: The influence of
Polymerization reactor: The influence of “gel effect” in batch and continuous solution polymerization of methyl methacrylate
✍ G. Maschio; C. Moutier 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 550 KB

This article describes the influence of gel effect in the free radical polymerization of methyl methacrylate. A mathematical model has been developed which tries to predict the performance of batch and continuous polymerization reactors under dynamic and steady-state conditions. The influence of dif

Nitroxide-Mediated Polymerization of Sty
Nitroxide-Mediated Polymerization of Styrene in a Continuous Tubular Reactor
✍ Thomas E. Enright; Michael F. Cunningham; Barkev Keoshkerian 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 114 KB

## Abstract **Summary:** Nitroxide‐mediated polymerization of styrene in a continuous tubular reactor has been demonstrated for the first time. The polymerization kinetics in the tubular reactor are similar to those in a batch reactor. The number average molecular weight increases linearly with con

Continuous Controlled Radical Polymeriza
Continuous Controlled Radical Polymerization of Methyl Acrylate in a Copper Tubular Reactor
✍ Nicky Chan; Michael F. Cunningham; Robin A. Hutchinson 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 189 KB

## Abstract The use of copper tubing as both the reactor and as a catalyst source is demonstrated for continuous controlled radical polymerization of methyl acrylate at ambient temperature and at low solvent content of 30%. The high surface area provided by the copper walls mediates the reaction vi

Continuous emulsion polymerization of st
Continuous emulsion polymerization of styrene in a single Couette–Taylor vortex flow reactor
✍ Xue Wei; Hiroshi Takahashi; Syuzaemon Sato; Mamoru Nomura 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 262 KB 👁 2 views

## Abstract The effect of the geometrical and operational parameters on the mixing characteristics of a Couette–Taylor vortex flow reactor (CTVFR) were investigated and were correlated with the same parameters by using the tank‐in‐series model. Continuous emulsion polymerization of styrene was cond