Ifp Energies Nouvelles

Pierre Antoine Bouillon

Fabrice Giroudiere

Sylvain Louret

Caroline Aymard

Eszter Toth

Stephanie Fleurier

Raphael Huyghe

Larissa Perotta

Rafael Lugo

This invention relates to a process for the production of hydrogen from a hydrocarbon feedstock and steam comprising:

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The process for the production of alcohol and/or solvent from a biomass feedstock comprises the stages for pretreatment (P) of the biomass feedstock, for enzymatic hydrolysis (H) of the pretreated substrate, and for fermenting the hydrolyzate (F). To reduce the size of the fermenters, at least a portion of the solid residue contained in the hydrolyzate is extracted (Ex) in such a way as to obtain a stream of solid residue () comprising lignin and a hydrolyzate () that is low in solid residue. Then, the stream of solid residue is washed (L) with a liquid stream in such a way as to recover a sugar-enriched liquid stream (). The sugar-enriched liquid stream () is recycled in the enzymatic hydrolysis stage (H) to be able to upgrade the sugars without providing dilution of the streams in the process.

Process for the production of alcohols and/or solvents from lignocellulosic biomass with washing of the solid residue obtained after hydrolysis

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Lyons, France

Pierre Antoine Bouillon