公开(公告)号：US10145063B2

公开(公告)日：2018-12-04

申请号：US15505465

申请日：2015-08-28

Applicant: University of Tennessee Research Foundation

Inventor： Joseph Bozell ,  David Harper ,  Nicole Labbe ,  Omid Hosseinaei ,  Timothy Rials

IPC: D21C11/00 ,  D21C3/20 ,  D01C1/02 ,  D01D5/00 ,  D01F9/17 ,  C08B37/00 ,  C08H8/00

Abstract: A comprehensive process for treating lignocellulosic biomass in order to separate the biomass into its component parts, the process comprising: a) contacting the lignocellulosic biomass with a first solvent for a period of time and at a first temperature at a severity in the range of about 2 to about 4 to remove extractive components and a portion of ash from the biomass; b) contacting the biomass from step (a) with a second solvent, and optional catalyst, at a second temperature at a severity in the range of about 1 to 5 to remove hemicelluloses and additional ash from the biomass; and c) separating the biomass from step (b) into a lignin product and a cellulose product by contacting the biomass from step (b) with a third solvent at a severity in the range of about 1.5 to 5 to provide a spent liquor product and a solid fraction containing cellulose.

公开(公告)号：US20170247834A1

公开(公告)日：2017-08-31

申请号：US15505465

申请日：2015-08-28

Applicant: University of Tennessee Research Foundation

Inventor： Joseph BOZELL ,  David Harper ,  Nicole Labbe ,  Omid Hosseinaei ,  Timothy Rials

IPC: D21C11/00 ,  D01D5/00 ,  D01C1/02 ,  D21C3/20 ,  D01F9/17

CPC classification number: D21C11/0007 ,  C08B37/0057 ,  C08H8/00 ,  D01C1/02 ,  D01D5/0038 ,  D01F9/17 ,  D21C3/20

Abstract: A comprehensive process for treating lignocellulosic biomass in order to separate the biomass into its component parts, the process comprising: a) contacting the lignocellulosic biomass with a first solvent for a period of time and at a first temperature at a severity in the range of about 2 to about 4 to remove extractive components and a portion of ash from the biomass; b) contacting the biomass from step (a) with a second solvent, and optional catalyst, at a second temperature at a severity in the range of about 1 to 5 to remove hemicelluloses and additional ash from the biomass; and c) separating the biomass from step (b) into a lignin product and a cellulose product by contacting the biomass from step (b) with a third solvent at a severity in the range of about 1.5 to 5 to provide a spent liquor product and a solid fraction containing cellulose.