化学工程2012，Vol.40Issue(3)：40-42,62,4.
低气速条件下CO2在牛顿及非牛顿流体中气含率
Gas holdup of CO2 in Newtonian and non-Newtonian fluid at low gas velocity
摘要
Abstract
The gas holdups of CO2 bubble swarm at low superficial gas velocity in Newtonian fluid, shear thinned fluid and viscoelastic fl uid were measured. The influences of rheological property, mass fraction and superficial gas velocity on the gas holdup were investigated. The results show that the gas holdups in three fluids all increase with the increase of superficial gas velocity, and different fluid has different effects on the gas holdup. The effect of mass fraction on the gas holdup in Newtonian fluid at low superficial gas velocity is negligible. For non-Newtonian fluid, the gas holdup decreases with the decrease of flow index n, that is, shear thinning effect has negative impact on the gas holdup, and the influence of viscoelasticity on the gas holdup is negligible. The gas holdup is the most important parameter for the gas-liquid mass transfer process design, and it provides a solid foundation for the research on mass transfer of CO2 bubble swarm in non-Newtonian fluid.关键词
气含率/非牛顿流体/气泡群/剪切变稀性/黏弹性Key words
gas holdup/ non-Newtonian fluid/ bubble swarm/ shear thinning property/ viscoelasticity分类
化学化工引用本文复制引用
李少白,马友光,付涛涛,朱春英..低气速条件下CO2在牛顿及非牛顿流体中气含率[J].化学工程,2012,40(3):40-42,62,4.基金项目
国家自然科学基金资助项目(21076139、20476073) （21076139、20476073）
化学工程国家重点实验室开放课题(SKL-ChE-08B03) （SKL-ChE-08B03）
