Liquid-liquid extraction apparatus
AssigneeArtisan Industries Inc.
InventorJames L. Baird
Life of this patent
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Abstract
A liquid-liquid extraction apparatus, which apparatus comprises a liquid-liquid extraction column with timing controls for sequentially pulsing the light and heavy phases and controlling the operation of the valves which introduce into the withdraw from the column the liquid phases, based on the percent of phase-volume changes occurring in the liquid-liquid extraction in the column.
Claims5
A liquid-liquid extraction system in which a light-phase liquid and a heavy-phase liquid are intimately mixed in a countercurrent direction in a column, to provide for the extraction of a material from one of the phases by the other phase, which apparatus comprises in combination:
- (a) a liquid-liquid extraction column containing therein means to provide for the intimate mixing together and contacting of the light and heavy phases in the column;
- (b) means to introduce the heavy phase into the top of the column;
- (c) means to introduce a light phase into the bottom of the column;
- (d) means to withdraw a heavy-phase solution from the bottom of the column;
- (e) means to withdraw a light-phase solution from the top of the column;
- and
- (f) first timing means to control the introduction and withdrawal of the light and heavy phases and the light- and heavy-phase solutions in the column, the light and heavy phases pulsing independently of each other, and the timing means operating based on the percent-volume phase change occurring in the extraction process between the light and heavy phases, thereby maintaining substantially constant the liquid-liquid interfaces in the column.
Dependencies are inferred from the claim text.