公开(公告)号：US20170101430A1

公开(公告)日：2017-04-13

申请号：US15292079

申请日：2016-10-12

Applicant: Valmet Technologies Oy

Inventor： Eric Enqvist ,  Ville Tarvo ,  Panu Tikka ,  Tobias Wittmann ,  Henrik Wallmo ,  Anders Littorin

IPC: C07G1/00

CPC classification number: C07G1/00 ,  C08H6/00

Abstract: Lignin-rich starting material is suspended in a first medium, which is acidic and aqueous, to form a aqueous acidic suspension, which is heated and allowed to form two continuous phases, a thermoplastic lignin phase and an aqueous phase. The thermoplastic lignin phase is separated from the aqueous phase and passed through a shape giving process into a second medium which is at a temperature lower than that of the thermoplastic lignin phase and in which the thermoplastic lignin phase is essentially insoluble. Solid lignin formed in the second medium is recovered.

公开(公告)号：US10239904B2

公开(公告)日：2019-03-26

申请号：US15292079

申请日：2016-10-12

Applicant: Valmet Technologies Oy

Inventor： Eric Enqvist ,  Ville Tarvo ,  Panu Tikka ,  Tobias Wittmann ,  Henrik Wallmo ,  Anders Littorin

IPC: C07G1/00 ,  C08H7/00

Abstract: Lignin-rich starting material is suspended in a first medium, which is acidic and aqueous, to form a aqueous acidic suspension, which is heated and allowed to form two continuous phases, a thermoplastic lignin phase and an aqueous phase. The thermoplastic lignin phase is separated from the aqueous phase and passed through a shape giving process into a second medium which is at a temperature lower than that of the thermoplastic lignin phase and in which the thermoplastic lignin phase is essentially insoluble. Solid lignin formed in the second medium is recovered.