Quality inferential control of an industrial high density polyethylene process

被引：29

作者：

Ogawa, M

Ohshima, M ^{[1
]}

Morinaga, K

Watanabe, F

机构：

[1] Kyoto Univ, Dept Chem Engn, Kyoto 60601, Japan

[2] Mitsubishi Chem Corp, Kamisu, Ibaraki 314002, Japan

[3] Mitsubishi Chem Corp, Mizushima Plant, Kurashiki, Okayama 712, Japan

来源：

JOURNAL OF PROCESS CONTROL | 1999年 / 9卷 / 01期

基金：

日本学术振兴会;

关键词：

quality-control; softsensors; MI control; polymerization reactor control; internal model control;

D O I：

10.1016/S0959-1524(98)00029-8

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The melt index (MI) is an important quality variable of control in polyolefin processes. However, it is difficult to measure this variable at frequent and regular sample intervals. A practical on-line inferential scheme is proposed in this paper for predicting the MI using secondary on-line measurements. This on-line MI inferential estimation scheme is combined with a quality control system that utilizes a two-degree of freedom cascaded model predictive controller. The proposed system has been successfully evaluated, under regulatory as well as tracking conditions, on an industrial polyolefin operation. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：51 / 59

页数：9

共 6 条

[1] Survey of advanced control of polymerization reactors [J].