PROCESS FOR THE PRODUCTION OF ALCOHOLS AND/OR SOLVENTS FROM LIGNOCELLULOSIC BIOMASS WITH WASHING OF THE SOLID RESIDUE OBTAINED AFTER HYDROLYSIS
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 por...
Saved in:
Main Authors | , , , , , |
---|---|
Format | Patent |
Language | English |
Published |
11.09.2014
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | 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 (Ex1) in such a way as to obtain a stream of solid residue (9) comprising lignin and a hydrolyzate (8) 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 (15). The sugar-enriched liquid stream (15) is recycled in the enzymatic hydrolysis stage (H) to be able to upgrade the sugars without providing dilution of the streams in the process. |
---|---|
Bibliography: | Application Number: US201414197619 |