Mass transfer performance of curve blade impeller in gas-liquid mixing

Abdul Raman, Abdul Aziz and Nik Meriam, N.S. and Ibrahim, Shaliza (2004) Mass transfer performance of curve blade impeller in gas-liquid mixing. Journal of Industrial Technology, 13 (1). pp. 69-78.


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In this work the volumetric mass transfer coefficient, k a of a six bladed curve blade impeller 6CB was compared with a standard six bladed Rushton Turbine (6RT) by measuring dissolved oxygen content in 20cm diameter cylindrical tank. It was found that for gas rated in between 15liter/min and rpm in between 300 to 700rpm, 6CB gives 30-50% higher volumetric mass transfer compared 6RT at the same gas rate and impeller rational speed. For the same range of gas rates and impeller speed, volumetric mass transfer coefficient per unit power input for 6CB was found to be higher than 6RT by 61% to 130% hence making 6CB as a perfect candidate for retrofitting 6RT in order to obtain better mass transfer performance for liquid-gas system without changing motor and shaft assembly.

Item Type: Article
Uncontrolled Keywords: Stirred vessel; Mass transfer; Curve blade impeller; Gas-liqiud contacting
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TC Hydraulic engineering. Ocean engineering
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Norhamizah Tamizi
Date Deposited: 13 Mar 2014 09:42
Last Modified: 06 Dec 2019 07:37

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