Title :
Detection of incipient clogging in pulverized coal injection lines
Author :
Johansson, Andreas ; Medvedev, Alexander
Author_Institution :
Lulea Univ. of Technol., Sweden
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;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.801673
