The influence of atomizer internal design and liquid physical properties on effervescent atomizing of coal-water slurry

摘要：

This study investigated the dependence of effervescent atomizing of coal-water slurry (CWS) on atomizer internal design and fluid properties.Results demonstrate that internal design of atomizer and fluid properties directly affect the two-phase flow pattern inside the atomizer which consequently affects the spray quality.The influence of mixing chamber length on spray quality is not significant at the ALR of 0.15 except for spray 0.75glycerol/0.248water/0.002 xanthan mixture.The same trend also found in the effect of angle of aeration holes at ALR of 0.15.Large diameter of the inclined aeration holes shows small SMD for water.The consistency index of fluids has no effect on the spray quality and Sauter Mean Diameter (SMD) increases when polymer additions were added to the glycerin-water mixture.The radial profile of SMD for spray water are almost flat,however,the largest SMD can be obtained at the edge of spray for three other fluids.

关键词： Effervescent Atomization Atomizer Internal Design Liquid Properties High-Viscosity Fluid Non-Newtonian fluid

作者: M Liu Y.F.Duan

作者单位: Institute of Theraml Engineering,Southeast University,Nanjing 210096,China

会议类型: 国际会议

会议名称: The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 588-592

在线出版日期: 2011-07-19（万方平台首次上网日期，不代表论文的发表时间）