Ifp Energies Nouvelles

Agro Industries Recherche Et Developpement

Institut National De La Recherche Agronomique

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement

Institute National De Recherche Pour L'agriculturel'alimentation Et L'environnement

Olivier Carnnot

Caroline Aymard

Romain Rousset

Pierre-Antoine Bouillon

Damien Hudebine

Meriem Bouras

The present invention concerns a method for cleaning a reactor () for treating a lignocellulosic biomass (P), said method comprising the following steps:

Method for cleaning a reactor for processing a lignocellulosic biomass

The invention relates to a process for treating lignocellulosic biomass by means of an acidic liquor in order to produce 'second-generation' (2G) sugary liquors. These sugary liquors may be used to produce other products via a biochemical pathway (e.g. alcohols such as ethanol, butanol or other molecules, for example solvents such as acetone, etc.). This process comprises analysis of the liquid streams withdrawn during the process and adjustment of the composition of the impregnation liquor so as to keep the acidic power of said streams constant.

Method for treating lignocellulosic biomass by impregnation

The invention concerns a continuous method for treating a lignocellulosic biomass before enzymatic hydrolysis, said method comprising a transfer of crushed then pressed biomass to a step of impregnation by an acid liquor, the impregnated biomass dripping over the area containing the impregnation liquor, then the resulting wet biomass is pressed and sent to a steam explosion step. The impregnation liquor is prepared in a dedicated area from the used liquor from the dripping operation and/or that from the pressing operation, prior to the explosion step. The invention also concerns the facility for implementing the method.

Method for treating lignocellulosic biomass by impregnation and steam explosion

Growing community of inventors

Baconnes, France

Olivier Carnnot