(587f) Liquid-Liquid Extraction Performance of a New Single Stage Rotor-Stator Spinning Disc Extractor

Liquid-liquid extraction performance of a new single stage rotor-stator spinning disc extractor

Ling Lv, Bin Liang*,Changjun Liu, Siyang Tang,Hairong Yue

Multi-phases Mass Transfer and Reaction Engineering Laboratory, College of Chemical Engineering, Sichuan University, Chengdu 610065, China;

*Corresponding author: liangbin@scu.edu.cnAbstract:

Liquid-liquid extraction is one of the most important separation processes, which has been intensively used in chemical, pharmaceutical and hydrometallurgical industries due to its simplicity, high duty and low costs. Rotor-stator spinning disc contactor is supposed to have higher mass transfer efficiency than conventional column contactors. Here we designed and constructed a new countercurrent rotor-stator spinning disc extractor which has two settling chambers and one spinning chamber in between the shaft of the disc was placed horizontally. The performance of the extractor was evaluated with the water-ethanol-2-ethyl-hexanol system. The flow pattern, extraction efficiency, mass transfer coefficient were studied experimentally. A maximum of extraction efficiency of 88% and an overall mass transfer coefficient of 0.63s^-1was achieved at a spinning rate of 500 rpm and a liquid flow rate of 0.33×10⁻⁶m_AQ³ s⁻¹ (water: 2-ethyl-hexanol = 1:1).The results indicated that overall mass transfer coefficient and extraction efficiency of rotor-stator spinning disc extractor were higher than rotating disc column extractor.

Keywords:

Mass transfer, ethanol, Counter-current flow, Spinning disc extractor, rotor-stator Reference：

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