Liquid–liquid phase separation in gravity settler with inclined plates



Experimental investigations were made into the separation behavior of three different liquid–liquid dispersions in horizontal phase separators including internals. The test setup used, consisting of two separators of 200 mm diameter, enables direct comparative measurement of different internal configurations. The investigation focused on how inflow to the plates, the plate material, and the distance between the plates influenced separation length in the separator. Measurements performed for a range of total volume flows and phase ratios reveal that internals can achieve a reduction in the separation length required of up to 75% compared to that of a separator with no internals. It was also shown that discontinuous settling tests in a glass cylinder including internals can be used in achieving an initial engineering design for separators including internals. © 2004 American Institute of Chemical Engineers AIChE J, 50: 802–811, 2004