Patent ID: 9139858
Filing Date: 2015-09-22
Classification: C12M,C12P,Y02E

Abstract:
1. A method to treat a lignocellulosic material comprising: pretreating the lignocellulosic material to produce a slurry including the lignocellulosic material and a liquid; adding an alkali material to the slurry in a first conveyor, wherein the alkali material increases the average pH of the slurry moving through the first conveyor; transferring the slurry with the alkali material from the first conveyor to a second conveyor; adding a first portion of an enzyme solution to the slurry while the slurry is in the second conveyor, entering the second conveyor, or passing through the discharge of the second conveyor; transferring the slurry with the enzyme solution from the second conveyor slurry to a mixer; mixing the slurry with a second portion of the enzyme solution, wherein the second portion of the enzyme solution is added to the slurry during the mixing, and transferring the slurry with the enzyme solution mixed with the first and second portions of the enzyme solution to a first reactor vessel, and subjecting the slurry in the first reactor vessel to enzymatic hydrolysis, wherein the viscosity of the slurry is reduced in the first reactor vessel.