Detection of incipient clogging in pulverized coal injection lines

Author

Johansson, Andreas ; Medvedev, Alexander

Author_Institution

Lulea Univ. of Technol., Sweden

Volume

2

fYear

1999

fDate

1999

Firstpage

1329

Abstract

This paper deals with the detection of clogging in the coal injection lines of a blast furnace. A physical model is developed and augmented with a signal that represents clogging. An observer is proposed and shown to have any predefined convergence rate. An adaptive detection threshold scheme which is robust against time-varying uncertainties is employed. Simulations and experiments with real data are carried out to illustrate the usefulness of the methods

Keywords

coal; fault location; flow measurement; furnaces; metallurgical industries; observers; pressure measurement; pulverised fuels; signal processing; adaptive detection threshold scheme; blast furnace; clogging detection; clogging signal; fault detection; flow measurement; flow sensor; observer; predefined convergence rate; pressure measurement; pressure sensor; pulverized coal injection lines; time-varying uncertainties robustness; Blast furnaces; Control systems; Controllability; Costs; Delay; Fault detection; Nitrogen; Powders; Robustness; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE

Conference_Location

Phoenix, AZ

ISSN

0197-2618

Print_ISBN

0-7803-5589-X

Type

conf

DOI

10.1109/IAS.1999.801673

Filename

801673