Evaluation of Packings for Use in Liquid-Liquid Extraction Columns

Experimental investigations of packing performance in extraction service were conducted in a 10.2 cm. diameter column. Both random and structured packing elements were covered in separate studies. Test systems were toluene/acetone/water and n-butanol/succinic acid/water. Measurements were made of dispersed phase holdup and mass transfer rate. A tentative correlation was developed, based on a modification of basic tests using an empty column, involving an effective drop diameter.

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