摘要
The axial profile of gas holdups was measured using a γ-ray densitometry in the pressurized bubble column,0.3 m in diameter and 6.6 m in height.The principle of γ-ray measurement and data processing is discussed.The axial profile of gas holdups and its average value in two-phase system were obtained in the churn-turbulent flow regime with a gas velocity up to 0.40 m·s -1 and a system pressure up to 1.0 MPa, which are in agreement with results obtained by differential pressure method.The effects of superficial gas velocity, liquid surface tension, liquid viscosity and system pressure on the axial profile of gas holdups were investigated.It is shown that the gas holdup decreases with the increasing liquid viscosity and liquid surface tension, and increases with the increase of pressure and superficial gas velocity.
The axial profile of gas holdups was measured using a γ-ray densitometry in the pressurized bubble column, 0.3 m in diameter and 6.6 m in height. The principle of γ-ray measurement and data processing is discussed. The axial profile of gas holdups and its average value in two-phase system were obtained in the churn-turbulent flow regime with a gas velocity up to 0.40 m·s-1 and a system pressure up to 1.0 MPa, which are in agreement with results obtained by differential pressure method. The effects of superficial gas velocity, liquid surface tension, liquid viscosity and system pressure on the axial profile of gas holdups were investigated. It is shown that the gas holdup decreases with the increasing liquid viscosity and liquid surface tension, and increases with the increase of pressure and superficial gas velocity.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2004年第9期1523-1527,共5页
CIESC Journal
基金
中国石油化工股份有限公司资助项目(No J2 0 3 0 3 1)~~
关键词
气液鼓泡塔
γ射线透射技术
气含率
轴向分布
Attenuation
Gamma radiography
Pressurization
Surface tension
Two phase flow
Velocity
Viscosity of liquids
