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.
Claims26
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, wherein the organic compound is selected from the group consisting of carboxylic acids, alcohols and cyclic esters.
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.
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, wherein the organic solvent is a trialkylphosphine oxide or dialkylsulfoxide.
Dependencies are inferred from the claim text.