EP 0140226 A2 19850508 - Method of obtaining lignin from alcaline lignin solutions.
Title (en)
Method of obtaining lignin from alcaline lignin solutions.
Title (de)
Verfahren zur Gewinnung von Lignin aus alkalischen Lignin-Lösungen.
Title (fr)
Procédé pour l'obtention de lignine à partir de solutions de lignine alcalines.
Publication
Application
Priority
DE 3339449 A 19831031
Abstract (en)
[origin: ES8506820A1] Procedure and device for obtaining lignin from alkaline solutions of lignin.comprended: a) add anodically the solutions of lignin continuously, through an electrolysis; and b) catalytically regenerate the alcali in the process. The alkaline solution of lignine is an extract or a residual bleach of a process of cellulose and the alcali is naoh. Consists of: a recipient (2) in the form of paralelepipedo; a membrane (3) whose same or matches with the taman/or surface (6) side of the container (2) and divides the interior (2) in an anodic compartment (7) and a cathodic compartment (8); an anode (4) and a catode (5) with its current connections (10, 11) and inlet ducts (12, 16) to (2) and outlet ducts (13, 17) of (2). (Machine-translation by Google Translate, not legally binding)
Abstract (de)
Für die Gewinnung von Lignin durch Ausfällung aus alkalischen Lignin-Lösungen mittels Neutralisation und zur Rückgewinnung des Alkali wird eine elektrolytische Ansäuerung der Lignin-Lösungen bei gleichzeitiger Regenerierung des verwendenten Alkali vorgeschlagen. Das Verfahren ist besonders günstig für die Herstellung von reinem Lignin (z. B. aus dem Organosolvaufschluß) einsetzbar.
IPC 1-7
IPC 8 full level
C07G 1/00 (2006.01); C25B 3/00 (2006.01); D21C 11/00 (2006.01); C05F 7/02 (2006.01)
CPC (source: EP US)
D21C 11/0042 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR LI SE
DOCDB simple family (publication)
EP 0140226 A2 19850508; EP 0140226 A3 19880831; EP 0140226 B1 19920513; AT E76079 T1 19920515; BR 8405541 A 19850910; CA 1269345 A 19900522; DE 3339449 A1 19850509; DE 3339449 C2 19871203; DE 3485719 D1 19920617; ES 537170 A0 19850816; ES 8506820 A1 19850816; FI 76849 B 19880831; FI 76849 C 19881212; FI 843766 A0 19840925; FI 843766 L 19850501; NO 169289 B 19920224; NO 169289 C 19920603; NO 843879 L 19850502; PT 79434 A 19841101; PT 79434 B 19860915; US 4584076 A 19860422
DOCDB simple family (application)
EP 84112077 A 19841009; AT 84112077 T 19841009; BR 8405541 A 19841030; CA 466587 A 19841030; DE 3339449 A 19831031; DE 3485719 T 19841009; ES 537170 A 19841029; FI 843766 A 19840925; NO 843879 A 19840927; PT 7943484 A 19841031; US 66588284 A 19841029