公开(公告)号：US09828726B2

公开(公告)日：2017-11-28

申请号：US14912730

申请日：2014-08-08

Applicant: Valmet Technologies Oy

Inventor： Seppo Hiljanen

IPC: C01B31/02 ,  D21C11/00 ,  C07G1/00 ,  C01B32/00 ,  C01B32/05

CPC classification number: D21C11/0007 ,  C01B32/00 ,  C01B32/05 ,  C07G1/00 ,  Y02E50/14

Abstract: The invention provides a method and a system for separating lignin from a lignin containing liquid medium, such as pulp mill black liquor, and treating the separated lignin. The method comprises at least the following steps: a) a precipitation stage (1), wherein a pH lowering agent (A) is added to the lignin containing slurry for precipitating lignin, b) followed by a first separation stage (2), wherein the precipitated lignin is separated as a lignin cake from the remaining liquid phase of the lignin containing slurry, c) a suspending stage (3), wherein the lignin cake is suspended for obtaining a lignin suspension, d) a hydrothermal carbonization stage (4), wherein the lignin suspension is treated for obtaining a slurry of carbon containing material, and e) a second separation stage (5), wherein the carbon containing material is separated from the slurry.

公开(公告)号：US20160208436A1

公开(公告)日：2016-07-21

申请号：US14912730

申请日：2014-08-08

Applicant: VALMET TECHNOLOGIES OY

Inventor： Seppo Hiljanen

IPC: D21C11/00 ,  C01B31/00 ,  C07G1/00 ,  C01B31/02

CPC classification number: D21C11/0007 ,  C01B32/00 ,  C01B32/05 ,  C07G1/00 ,  Y02E50/14

Abstract: The invention provides a method and a system for separating lignin from a lignin containing liquid medium, such as pulp mill black liquor, and treating the separated lignin. The method comprises at least the following steps: a) a precipitation stage (1), wherein a pH lowering agent (A) is added to the lignin containing slurry for precipitating lignin, b) followed by a first separation stage (2), wherein the precipitated lignin is separated as a lignin cake from the remaining liquid phase of the lignin containing slurry, c) a suspending stage (3), wherein the lignin cake is suspended for obtaining a lignin suspension, d) a hydrothermal carbonization stage (4), wherein the lignin suspension is treated for obtaining a slurry of carbon containing material, and e) a second separa-tion stage (5), wherein the carbon containing material is separated from the slurry.

Abstract translation: 本发明提供了一种用于从含木质素的液体介质（例如纸浆厂黑液）中分离木质素并处理分离的木质素的方法和系统。 该方法至少包括以下步骤：a）沉淀阶段（1），其中将pH降低剂（A）加入到含木素的浆料中用于沉淀木质素，b）然后是第一分离阶段（2），其中 沉淀的木质素作为木质素饼从含有木质素的浆液的剩余液相中分离出，c）悬浮阶段（3），其中悬浮木质素饼以获得木质素悬浮液，d）水热碳化阶段（4） ，其中处理木质素悬浮液以获得含碳材料的浆料，和e）第二分离阶段（5），其中将含碳材料与浆料分离。