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AssigneeIfp Energies Nouvelles
InventorsMarc JACQUIN, Maria FERNANDEZ ESPADA PASTOR, Kim LARMIER, Helene LORCET, Thi Bich Ngoc DANG
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The invention relates to a process for producing an aqueous solution of 5-hydroxymethylfurfural (5-HMF), comprising: a step a) of placing a feedstock comprising 5-HMF and dimethyl sulfoxide (DMSO) in contact with an intermediate aqueous back-extract obtained from step c), to obtain an aqueous mixture, a step b) of liquid-liquid extraction of the aqueous mixture with a stream of extraction solvent, to produce an aqueous raffinate and an intermediate organic extract, a step c) of back-washing of the intermediate organic extract with an aqueous solvent, to produce the intermediate aqueous back-extract and an organic raffinate, a step d) of liquid-liquid back-extraction of the organic raffinate obtained on conclusion of step c) with an aqueous stream, to produce an organic effluent and an aqueous back-extract of 5-HMF.
A process for producing an aqueous solution of 5-hydroxymethylfurfural (5-HMF), said process comprising:
The process as claimed in claim, in which d) is carried out at a temperature of between 0 and 60° C.
Dependencies are inferred from the claim text.