Gas Holdups of Small and Large Bubbles in a Large-scale Bubble Column with Elevated Pressure  

作　　者：JINHai-bo YANGSuo-he ZHANGTong-wang TONGZe-min 

机构地区：[1]DepartmentofChemicalEngineering,BeijingInstituteofPetrochemicalTechnology,Beijing102617,P.R.China

出　　处：《Chemical Research in Chinese Universities》2004年第4期462-465,共4页高等学校化学研究（英文版）

基　　金：Supported by China Petroleum and Chem ical Corporation(No. 2 0 0 0 5 8)

摘　　要：Gas holdups of large bubbles and small bubbles were measured by means of dynamic gas disengagement approach in the pressured bubble column with a diameter of 0.3 m and a height of 6.6 m. The effects of superficial gas velocity, liquid surface tension, liquid viscosity and system pressure on gas holdups of small bubbles and large bubbles were investigated. The holdup of large bubbles increases and the holdup of small bubbles decreases with an increase of liquid viscosity. Meanwhile, the holdup of large bubbles decreases with increasing the system pressure. A correlation for the holdup of small bubbles was obtained from the experimental data.Gas holdups of large bubbles and small bubbles were measured by means of dynamic gas disengagement approach in the pressured bubble column with a diameter of 0.3 m and a height of 6.6 m. The effects of superficial gas velocity, liquid surface tension, liquid viscosity and system pressure on gas holdups of small bubbles and large bubbles were investigated. The holdup of large bubbles increases and the holdup of small bubbles decreases with an increase of liquid viscosity. Meanwhile, the holdup of large bubbles decreases with increasing the system pressure. A correlation for the holdup of small bubbles was obtained from the experimental data.

关 键 词：Bubble column Elevated pressure Large bubble Small bubble HOLDUP 

分 类 号：O659[理学—分析化学]