Bench Top Vortexing Countercurrent Extractor for Controlled pH Extraction of a Mixture

1996 ◽  
Vol 73 (5) ◽  
pp. 476
Author(s):  
Yock Chai Toong
Keyword(s):  
Countercurrent Extractor

Fractionation of citrus oil by supercritical countercurrent extractor with side-stream withdrawal

1998 ◽  
Vol 13 (1-3) ◽  
pp. 311-317 ◽  
Author(s):  
Masaki Sato ◽  
Mitsuru Kondo ◽  
Motonobu Goto ◽  
Akio Kodama ◽  
Tsutomu Hirose
Keyword(s):  
Side Stream ◽  
Countercurrent Extractor

Performance of continuous countercurrent extractor on the fractionation of Citrus bergamia essential oil using ethanol/water mixtures as solvents

2018 ◽  
Vol 137 ◽  
pp. 566-576 ◽  
Author(s):  
Daniel Gonçalves ◽  
Cristina Chiyoda Koshima ◽  
Fábio Rodolfo Miguel Batista ◽  
Christianne Elisabete da Costa Rodrigues
Keyword(s):  
Essential Oil ◽  
Continuous Countercurrent ◽  
Countercurrent Extractor ◽  
Citrus Bergamia

Extraction of steroids from cultured liquids in a horizontal �-400-TF countercurrent extractor

1967 ◽  
Vol 1 (3) ◽  
pp. 168-170
Author(s):  
T. T. Filippos'yants ◽  
Z. E. Pozdnyakova ◽  
E. V. Kotova ◽  
G. A. Sandomirskaya
Keyword(s):  
Countercurrent Extractor

Random errors in equilibrium composition of ternary liquid-liquid systems and their effect on the calculated number of theoretical stages of countercurrent extraction

1988 ◽  
Vol 53 (1) ◽  
pp. 34-44
Author(s):  
Ján Dojčanský ◽  
Soňa Bafrncová ◽  
Július Surový
Keyword(s):  
Equilibrium Composition ◽  
Random Errors ◽  
Liquid Equilibrium ◽  
Liquid Systems ◽  
Equilibrium Concentrations ◽  
Line Slope ◽  
Tie Line ◽  
Calculated Number ◽  
Countercurrent Extractor

The influence of size of random errors in the determination of ternary liquid-liquid equilibrium concentrations on the accuracy of the calculated number of theoretical stages of a countercurrent extractor is evaluated by using five hypothetical systems differing in the extent of mutual solubility of components, tie-line slope, and type of binodal curve.

Study on Purification of U Scraps in Continuous Countercurrent Extractor

2017 ◽  
Author(s):  
Fei He ◽  
Qiang Wan
Keyword(s):  
Reynolds Number ◽  
Residence Time ◽  
Extraction Efficiency ◽  
Impurity Content ◽  
Raw Material ◽  
Phase Ratio ◽  
Extraction Degree ◽  
Effects Of Rotation ◽  
Continuous Countercurrent ◽  
Countercurrent Extractor

In this paper, the feasibility of continuous countercurrent extractor (CCE) applied in extraction of U scraps rather than mixer-settler was studied. Effects of rotation Reynolds number, residence time on extraction and reverse extraction efficiency were investigated respectively. During the process, impurity content in raw material had a slight effect on extraction. Under the optimum conditions of O/A phase ratio of 1.2 and rotation Reynolds number of 13824, extraction degree of scrap pellet solution and alkalescence dreg lixivium were good with the residence time of 19 min and 26 min respectively. Under the best reverse extraction conditions of A/O phase ratio of 1.2, rotation Reynolds number of 23128 and residence time of 19 min, two kinds of raw material liquid mentioned as above could get better reverse extraction efficiency, while uranium concentration of raffinate phase and impurity content of reverse extract phase satisfied the technological requirement. This study verified the feasibility of CCE developed for purification of U scraps, identified the operation parameter, and provided an experimental basis for industrial expansion in the future.

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