Effect of Clearance between Two Sensor-Probes on Measured Values of Bubble Properties in a Bubble Column

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroshi Takahashi¹  Ken-ichi Kikuchi¹  Shigeki Chiba¹  Takatoshi Koike¹ 

[1] Department of Materials-Process Engineering and Applied Chemistry for Environments, Faculty of Engineering and Resource Science, Akita University

关键词: Bubble Column;    Optical Fiber;    Sensor;    Bubble;    Bubble Velocity;    Bubble Chord Length;   

DOI  :  10.1252/jcej.32.162

来源: Maruzen Company Ltd

【 摘 要 】

References(9)Cited-By(2)The effect of probe clearance on the rising velocity and chord length of bubbles in a bubble column was examined in measurements with the two-channel U-shaped optical fiber probe method. The probe clearances ranged from 0.2 to 1.5 cm. A few restrictions required in the signal processing to obtain the reasonable data. With increasing probe clearance, the observed values of the bubble velocities slightly increase; however, those of the bubble chord lengths drastically increase to 160% in the coalesced bubble regime, though they are almost constant in the dispersed bubble regime. A simple theory is proposed considering the probability of bubbles contacting with the probes, and used to successfully explain the experimental results.

【 授权许可】

Unknown