Title :
Hybrid model of an industrial HDPE reactor
Author :
Moudgalya, Kannan M.
Author_Institution :
Dept. of Chem. Eng., IIT, Mumbai, India
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;
Conference_Titel :
Intelligent Control, 2004. Proceedings of the 2004 IEEE International Symposium on
Print_ISBN :
0-7803-8635-3
DOI :
10.1109/ISIC.2004.1387692
