Turbulent Measurements within a Gas Stirred Three-Phase Bubble Column with Multiple Aeration Plugs
Within the process of converter stirring three major problems triggered by the turbulent convective flow are the subject of investigation.These are the request of fast and efficient mixing,minimising the erosion of refractory material,and the flushing of non-metal inclusions.To optimise the mixing behaviour while reducing the negative effects this work illustrates measurements from a lab scale air/water/oil experiment.The measurements are based on a PIV method utilising three cameras and two different wavelength lasers.This separation permits the investigation of the complete flow field with reduced resolution while monitoring a special area of interest at higher temporal and spatial resolution.The phase separation is achieved with subsequent image processing.The complete technique is introduced and applied to the big lab scale facility to investigate the phenomena in a scaled process environment.Considerations on selecting a liquid as a substitute for the slag layer and the corresponding similarities are presented.Comparisons between different aeration periods concerning the erosive potential are illustrated and an estimation of the mixing behavior based on the turbulent kinetic energy is provided.
converter stirring multiphase bubble column alternating aeration optical separation
Bernhard K(O)NIG Stefan PUTTINGER Stefan PIRKER
Department of particulate flow modelling,Johannes Kepler University,Linz 4040,Austria
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
339-342
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）