Title :
Control of radiant tubes in an indirect-fired strip annealing furnace for improved efficiency
Author :
Niederer, M. ; Steinbock, Andreas ; Strommer, S. ; Kugi, A.
Author_Institution :
Autom. & Control Inst., Vienna Univ. of Technol., Vienna, Austria
Abstract :
The possibilities for improving the efficiency of an indirect-fired strip annealing furnace with radiant tubes are explored. First, the influence of the fuel/air-ratio on the efficiency is analyzed by means of linearized relationships. Second, the optimum operating range of an individual radiant tube and a new control strategy for the fuel supply are derived. Both analyses are based on the balance model of a single radiant tube. The input data were taken from an experimental measurement campaign of an industrial furnace.
Keywords :
annealing; furnaces; pipes; process control; steel manufacture; strips; control strategy; fuel supply; fuel-air ratio; indirect-fired strip annealing furnace; industrial furnace; measurement campaign; radiant tubes control; steel manufacturing; steel processing; Combustion; Electron tubes; Fuels; Furnaces; Heating; Strips; Temperature measurement;
Conference_Titel :
Control Conference (ECC), 2013 European
