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. 24, 2015
Filed:
Jun. 16, 2011
Anders Sjoede, Sarpsborg, NO;
Anders Froelander, Sarpsborg, NO;
Martin Lersch, Sarpsborg, NO;
Gudbrand Roedsrud, Sarpsborg, NO;
Kristin Hals, Sarpsborg, NO;
Anne Mari Kloeften, Sarpsborg, NO;
Lennart Delin, Skaerholmen, SE;
Mats H Johansson, Norrköping, SE;
Anders Sjoede, Sarpsborg, NO;
Anders Froelander, Sarpsborg, NO;
Martin Lersch, Sarpsborg, NO;
Gudbrand Roedsrud, Sarpsborg, NO;
Kristin Hals, Sarpsborg, NO;
Anne Mari Kloeften, Sarpsborg, NO;
Lennart Delin, Skaerholmen, SE;
Mats H Johansson, Norrköping, SE;
BORREGAARD AS, Sarpsborg, NO;
Abstract
The present invention relates to a continuous process for the enzymatic hydrolysis of cellulosic biomass and to an apparatus for conducting said process. According to the present invention, a steady state is achieved in a reactor in regard to the hydrolysis reaction. Therein, cellulosic biomass of a high total solids content (preferably 10% or higher, further preferably between 15 and 30%) is continually added to said reactor, while at least partially hydrolyzed cellulosic biomass is continually removed from said reactor. The steady state is adjusted, i.e. the amount of cellulosic biomass added and the amount of at least partially hydrolyzed cellulosic biomass removed is adjusted, so that the retention time of a given portion of added cellulosic biomass in the reactor is longer than its 'liquefaction time', i.e. the time period required to transform a solid slurry into a pumpable liquid during hydrolysis, i.e. the time required to lower the viscosity of the slurry to a value, which is acceptable for further processing.