公开(公告)号：WO2016077405A1

公开(公告)日：2016-05-19

申请号：PCT/US2015/060050

申请日：2015-11-11

Applicant: API INTELLECTUAL PROPERTY HOLDINGS, LLC

Inventor： IAKOVLEV, Mikhail ,  YOU, Xiang ,  VAN HEININGEN, Adriaan

IPC: C08H8/00 ,  D21C3/04 ,  D21C3/06 ,  D21C3/20 ,  D21C1/04 ,  C08B37/14

CPC classification number: C08B15/08 ,  C08B37/0057 ,  C08H8/00 ,  C12P19/02 ,  C12P19/14 ,  C13K1/02 ,  C13K13/007

Abstract: A process for fractionating high-ash lignocellulosic biomass is provided, comprising: (a) providing a biomass feedstock comprising lignocellulosic material and ash, some of which may be removed before digestion; (b) contacting the feedstock with a digestor solution comprising a first organic solvent, an acid catalyst, and water, under effective digestor conditions and controlled acidity to produce intermediate solids and a first liquid phase comprising hemicelluloses and lignin; (c) separating the first liquid phase from the intermediate solids; (d) washing the intermediate solids with a wash solution comprising a second organic solvent and water, under effective washing conditions to produce cellulose-rich solids and a second liquid phase comprising hemicelluloses and lignin; and (e) separating the cellulose-rich solids from the second liquid phase. The solvent type is optimized to control acidity in the digestor. Controlling the acidity may also include adjusting digestor pH to a value between about 0.5 and about 2.0.

Abstract translation: 提供了一种用于分馏高灰分木质纤维素生物质的方法，包括：（a）提供包含木质纤维素材料和灰分的生物质原料，其中一些可以在消化之前被除去; （b）在有效的消化条件和受控的酸度下，使原料与包含第一有机溶剂，酸催化剂和水的消化溶液接触以产生中间体固体和包含半纤维素和木质素的第一液相; （c）将第一液相与中间体固体分离; （d）在有效的洗涤条件下，用包含第二有机溶剂和水的洗涤溶液洗涤中间体固体以产生富含纤维素的固体和包含半纤维素和木质素的第二液相; 和（e）从第二液相中分离富含纤维素的固体。 优化溶剂类型以控制消化器中的酸度。 控制酸度还可以包括将消化器pH调节至约0.5至约2.0之间的值。