Dsm IP Assets B.v.

Johannes Augustinus Kroon

Rudy Francois Maria Jozef Parton

Pierre Louis Woestenborghs

Johannes Gerardus De Vries

Arie De Rijke

Marinus Petrus Wihelmus Maria Rijkers

The invention relates to a process for the preparation of a sugar and/or fermentation product from lignocellulosic material.

Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars

A process for producing furfural and levulinic acid from lignocellulose-comprising biomass is disclosed. The biomass is slurried using water and optionally an acid, subjected to hydrolysis, and then subjected to a solid/liquid separation to yield at least an aqueous fraction comprising C5 and C6 sugars and a solid fraction comprising cellulose and lignin. Furfural is obtained by adding an organic solvent to the aqueous fraction, heating at 120-220&#xb0; C. for a sufficient time to form furfural, cooling, and separating an organic phase comprising at least part of the furfural from an aqueous phase. Levulinic acid is obtained by suspending the solid fraction in water and optionally an acid, heating the suspension to 140-220&#xb0; C., and separating an aqueous fraction comprising the levulinic acid from a solid fraction.

Process for the production of furfural and levulinic acid from lignocellulosic biomass

A process for continuously producing furfural and levulinic acid from biomass, said process comprising steps including pre-treatment of the biomass; hydrolysis and dehydration of the biomass; removing a vapor mixture by flashing the slurried biomass and a heat integration step comprising the water used being heated through a heat exchange system with the flashed vapor mixture.

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Echt, Netherlands

Johannes Augustinus Kroon