Hybrid model of an industrial HDPE reactor

Author

Moudgalya, Kannan M.

Author_Institution

Dept. of Chem. Eng., IIT, Mumbai, India

fYear

2004

fDate

2-4 Sept. 2004

Firstpage

258

Lastpage

263

Abstract

An industrial slurry high density polyethylene reactor with one outlet opening for the flow of both gases and slurry is modelled with a discontinuous system of differential algebraic equations. It is shown that the system reaches a state of sliding. Pressure, which is a fast variable, but not concentration, which is a slow variable, should be used as a manipulated variable to control the system. The dynamic characteristics of this system have been validated by plant tests and a laboratory air-water system. The notion of sliding has been extended to index-1 differential algebraic equation systems.

Keywords

chemical reactors; differential algebraic equations; polymerisation; process control; sampled data systems; variable structure systems; differential algebraic equations; discontinuous system; industrial HDPE reactor; industrial slurry polyethylene reactor; laboratory air-water system; sliding mode behavior; variable control system; Control systems; Differential algebraic equations; Gas industry; Gases; Inductors; Polyethylene; Pressure control; Sliding mode control; Slurries; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Control, 2004. Proceedings of the 2004 IEEE International Symposium on

ISSN

2158-9860

Print_ISBN

0-7803-8635-3

Type

conf

DOI

10.1109/ISIC.2004.1387692

Filename

1387692