Optimisation of the Design of Pulverised Coal Injection Lances: From Concept to Full Scale Implementation at BlueScope Steel’s BF6
Pulverised coal injection started at BlueScope Steel’s Port Kembla blast furnaces in 2002. With significant economic advantages to reduce consumption of coking coal via increasing the quantity of pulverised coal injected to the blast furnaces, a three-dimensional numerical model of the blowpipe/tuyere/raceway has been developed. The model has been applied in various plant-specific investigations of blast parameters, and more recently in the development of alternate coal injection lance tip geometries. The designs with the highest potential for increasing coal burnout included swirl and high dispersive tip designs. The reduction in char load entering the furnace for the best performing alternate designs was due to an increase in coal dispersion compared with the conventional design. A full-scale trial of the swirl lance design was carried out at Port Kembla’s BF6 in mid-2008. The trial delivered promising results, with PCI rates maintained. This was despite unrelated changes to the coke ash content and the burden mix fed to the furnace, which would normally reduce furnace permeability.
coal combustion modelling injection lance tip design char burnout
Daniel Maldonado Paul Zulli Peter Austin Mark Walsh John Mathieson Baoyu Guo Aibing Yu Harold Rogers
BlueScope Steel Research, Port Kembla, NSW 2505, Australia BlueScope Steel Ironmaking Department, Port Kembla, NSW 2505, Australia School of Materials Science and Engineering, University of New South Wales,Sydney, NSW 2052, Austral BHP Billiton - Newcastle Technology Centre, NSW, Australia
国际会议
The 5th International Congress on the Science and Technology of Ironmaking(第五届国际炼铁科技大会 ICSTI09)
上海
英文
797-803
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）