Abstract
A three-dimensional multi-phase model with Discrete Particle Model (DPM) approach has been developed to examine the performance of the twin oxygen-coal lances for PCI operation. Simulation conditions and properties of the PC were obtained from the real operation conditions of the blast furnace of 580 m3 with molten iron output of 1775 t/d. The simulation results of novel PCI style were also compared with the results of conventional PCI operation. Results show that the twin coal-oxygen lances changed the gas flow pattern near the tuyere, which results in a different mixing and burning process of the pulverized coal. The coal combustion efficiency near tuyere could be improved by applying coal-oxygen lance. For the PC adopted in the simulation, coal BR at the exit of the simulation region increased from 30% to 60% and the maximum temperature of the gas phase increased from 2200K to 2600K by applying the twin coal-oxygen lances and the high temperature zone is in a safe distance from the nozzle.
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© 2015 TMS (The Minerals, Metals & Materials Society)
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Meng, F., Tang, H., Zhao, Z. (2015). Performance of Twin Oxygen-Coal Lances for PCI Operation in Blast Furnace Iron Making. In: Jha, A., et al. Energy Technology 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48220-0_6
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DOI: https://doi.org/10.1007/978-3-319-48220-0_6
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48602-4
Online ISBN: 978-3-319-48220-0
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