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. 01, 2022
Filed:
Nov. 19, 2020
Applicant:
Valmet Ab, Sundsvall, SE;
Inventors:
Peter Björklund, Umeå, SE;
Andreas Averheim, Sundsvall, SE;
Assignee:
VALMET AB, Sundsvall, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 7/00 (2006.01); D21C 3/24 (2006.01); D21C 5/00 (2006.01); C12P 19/00 (2006.01); C12P 19/02 (2006.01); C12P 19/14 (2006.01); C13K 1/02 (2006.01); D21C 7/06 (2006.01); D21C 7/08 (2006.01); D21C 7/10 (2006.01);
U.S. Cl.
CPC ...
C12P 19/02 (2013.01); C12P 19/14 (2013.01); C13K 1/02 (2013.01); D21C 5/005 (2013.01); D21C 7/06 (2013.01); D21C 7/08 (2013.01); D21C 7/10 (2013.01);
Abstract
The present invention relates to an improved method and device for treating biomass in which thermally treated biomass is discharged from a pressurized reactor and introduced into a blow tank and then a flash tank, wherein the absolute pressure in the blow tank is maintained above atmospheric pressure and the absolute pressure in the flash tank is maintained below atmospheric pressure. The slurry of biomass separated in the flash tank is then enzymatically treated. The heat from the thermally treated biomass is recovered from the latent heat of a vaporous aqueous stream withdrawn from the blow tank.