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:
Mar. 28, 2017
Filed:
Feb. 06, 2014
Ifp Energies Nouvelles, Rueil-Malmaison, 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, 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 (Hand HF), and for fermenting the hydrolyzate (HF). To prevent solids from being sent and to facilitate operating the section for purifying the fermentation products, at least a portion of the solid material in the fermentation wine is extracted (Ex) to obtain a stream of solid residue () comprising lignin and a fermentation wine () that is low in solid material. Then, the stream of solid residue is washed (L) with a liquid stream to recover a liquid stream that is enriched with fermentation products (). The liquid stream that is enriched with fermentation products () is recycled in the enzymatic hydrolysis stage (H) to recover any fermentation product and to increase the overall yield of the process.