In plants liquid-liquid extraction column is used to separate components using solvent. In liquid-liquid extraction process solute is transferred between solvents. Moreover, both the solvents are insoluble in one another. However, the solvent which contain solute we consider it a feed stream. And, other is solvent stream in which solute transfer takes place.
Liquid-liquid extraction is a technically advanced, niche separation technology. It is applied when simpler alternatives such as distillation are not able to meet your requirements. Components are extracted from your feed with the help of a solvent, without an energy demanding evaporation step.
Extraction Columns are used for liquid-liquid extraction, which is an important separation technology in the chemical and pharmaceutical industry. The fields of application are the separation of azeotropic mixtures, of thermosensitive products, of mixtures with very high or very low boiling temperatures, where there are low amounts of target substance in carrier substance, and where a distillation is very complex.
Liquid-liquid extraction column offers high throughput and high efficiency at a low cost, and can be used for extraction of organic compounds, inorganic compounds, and non-ferrous metals, as well as reactive extraction. This extraction column alternately combines two types of trays with vertical plates and openings to discharge the heavy liquid accumulated above the trays from the opening in the form of a liquid sheet, producing dispersion droplets. The produced dispersion droplets are larger than those formed in conventional extraction columns. The liquid sheet repeats deformation motion until all the liquid is dispersed, stimulating mass transfer. As a result, this extraction column is characterized by 1) high throughput, 2) high efficiency, and 3) resistance to fouling. In particular, throughput (flow rate per cross-sectional area) is 2-5 times higher than other representative extraction columns such as perforated columns and agitated extraction columns.
(1) Applicable to liquid-liquid extraction and liquid-liquid reactive extractionExtraction of aromatics from cracked gasoline and coal light oil
(2) Oil extraction from aqueous solutionAugmenting capabilities of existing facilities
(3) Intensification of process performance