Simultaneous recovery of organic compounds and extractants
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsCarol Andrea ROA ENGEL, Jan HARM URBANUS, Dirk VERDOES
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Abstract
The invention relates to a method for recovering an organic compound from a feed stream comprising the steps of—extracting the organic compound into an organic solvent, thereby obtaining a mixture of the solvent and the organic compound; and—simultaneously crystallizing the solvent and the organic compound by cooling the mixture; and - separating the solid organic solvent and solid organic compound.
Claims22
Method for recovering an organic compound from a liquid feed stream comprising the steps of:
- a liquid-liquid extraction, wherein the organic compound is extracted from the feed stream into an organic solvent, thereby obtaining an extract, which is a mixture of the organic solvent and the organic compound;
- simultaneously crystallizing the solvent and the organic compound by cooling said mixture;
- and
- a solid-solid separation step to separate the solid solvent and solid organic compound.
Mixture comprising at least 1 wt. % crystals of a first organic compound, at least 1 wt. % crystals of a second organic compound different than the first compound and at least 25 wt. % of the first or second organic compound in liquid form, based on the total weight of the mixture.
Dependencies are inferred from the claim text.