LIQUID-LIQUID EXTRACTION

摘要

A liquid-liquid extraction process that uses counterflowing liquid phases, especially in conjunction with a reciprocating plate extraction column, wherein one of the liquid phases has a lower density than the other and is at least partially saturated with a dispersible gas, requires less plate stack height or a smaller column diameter when plate-to-plate spacing is non-uniform rather than uniform and such non-uniform plate-to-plate spacing includes greater plate-to-plate spacing proximate to raffinate liquid discharge than proximate to feed of the lower density liquid phase.