Effect of Sparger Geometry on Gas-Volume-Fraction in Vertical Bubble-Column Flows Measured by Gamma-Densitometry Tomography (GDT).

Shollenberger, K. A. ; George, D. L. ; Torczynski, J. R.

Technical Information Center Oak Ridge Tennessee

关键词: Spargers;    Tomography;    Fluid flow;    Design;    Slurry bubble-column reactors;   

RP-ID  :  DE2001760771

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Gamma-densitometry tomography (GDT) is applied to study the effect of sparger geometry on the axial development of gas-volume-fraction profiles in a vertical bubble-column flow. Tests are conducted in a cylindrical vessel with an inner diameter of 0.48 m and a height of 3 m using air for the gas phase and lightweight mineral oil (Dradeol 10) for the liquid phase. A cross sparger with interchangeable arms is used to inject gas into the column at a height of 0.33 to 0.36 diameters above the bottom of the column. The superficial gas velocity ranges from 5 to 30 cm/s, and the absolute column pressure ranges from 103 to 517 kPa. Radial distributions of gas volume fraction at eight axial locations from five different sparger geometries are presented.