The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2015
Filed:
Mar. 05, 2014
Ifp Energies Nouvelles, Rueil-Malmaison Cedex, FR;
Caroline Aymard, Lyons, FR;
Pierre Antoine Bouillon, Bron, FR;
Stephanie Fleurier, Lyons, FR;
Sylvain Louret, Lyons, FR;
Larissa Perotta, Lyons, FR;
Eszter Toth, Lyons, FR;
IFP Energies Nouvelles, Rueil-Malmaison Cedex, FR;
Abstract
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.