Shell Oil Comapny

Johannes P Haan

Johan G Bitter

Johannes Leendert Willem Cornelis Den Boestert

Arian Nijmeijer

Hendrik C Rijkens

A process for permeation enhanced reactive extraction of levulinic acid from a liquid aqueous phase comprising levulinic acid, wherein the levulinic acid from the aqueous phase is brought into contact with a liquid alcohol phase at esterification conditions in the presence of a catalyst at a temperature in the range of from 50 to 250&#xb0; C., the aqueous phase and the alcohol phase being separated from each other by a membrane, and an aqueous stream depleted in levulinic acid and an alcohol stream comprising ester of levulinic acid are formed.

Process for permeation enhanced reactive extraction of levulinic acid

Process for separating a fluid feed mixture containing hydrocarbon oil and an organic solvent (e.g. obtained from a furfural extraction unit) by contacting said fluid feed mixture at elevated pressure with one side of a hydrocarbon oil-selective membrane containing a layer of a silicone polymer which is substantially impermeable to said organic solvent and recovering hydrocarbon oil permeate from the other side of the membrane.

Process for separating a fluid feed mixture containing hydrocarbon oil

The invention is a process for the separation of solvents from hydrocarbons dissolved in the solvents which comprises contacting at elevated pressure a feed solution comprising hydrocarbons dissolved in an aromatic solvent and a polar aliphatic solvent with one side of a dense membrane which is substantially impermeable to the hydrocarbons, and which membrane comprises a layer of a halogen-substituted silicon compound, and recovering the solvents from the other side of the membrane.

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Amsterdam, Netherlands

Johannes P Haan