Combustion processes inside a direct-fired continuous strip annealing furnace. Issue 20 (2016)

• Record Type: Journal Article
• Authors: Strommer, Stephan; Niederer, Martin; Steinboeck, Andreas; Kugi, Andreas
• Is Part Of: IFAC-PapersOnLine. Volume 49:Issue 20(2016)
• Page Start: 208
• Page End: 213
• Publication Date: 2016
• Subjects: Direct-fired strip annealing furnace -- heat treatment of metal strips -- two-step fuel-rich combustion of natural gas -- water-gas-shift reaction -- first principles; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2016.10.122
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: The combustion process inside a direct-fired continuous strip annealing furnace for steel is analyzed. Here, the fuel-rich combustion of natural gas is modeled by two chemical reactions: first, the oxidation and, second, the water-gas-shift reaction, which leads to a chemical equilibrium inside the furnace. Based on the combustion process, the flue gas dynamics are modeled by the mass and the enthalpy balance. A measurement campaign conducted at a real plant is used for verification of the mathematical model. This model is appropriate for real-time applications in control and optimization due to its low computational effort and high accuracy.