Staged Liquid Extraction Again The Karr Column

3 Staged Liquid Extraction Again The Karr Column 

Sieve tray columns have also fotmd an application in staged countercurrent liquid extraction operations. The perforated plates, arranged in much the same way as in gas-liquid contact, act to break up accumulations of the dispersed phase and provide fresh surfaces for renewed mass transfer. Each of the plates, or rather the space between them, is a potential equilibrium stage, but the efficiency E is generally quite low. 

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