EP 1747308 A1 20070131 - LYOCELL METHOD AND DEVICE COMPRISING A PRESS WATER RECIRCULATION SYSTEM
Title (en)
LYOCELL METHOD AND DEVICE COMPRISING A PRESS WATER RECIRCULATION SYSTEM
Title (de)
LYOCELL-VERFAHREN UND -VORRICHTUNG MIT PRESSWASSERRÜCKFÜHRUNG
Title (fr)
PROCEDE ET DISPOSITIF LYOCELL A RECIRCULATION DE L'EAU SOUS PRESSION
Publication
Application
Priority
- EP 2005002097 W 20050228
- DE 102004024028 A 20040513
Abstract (en)
[origin: WO2005113869A1] The invention relates to a method and a device (1) for producing a cellulose solution that can be extruded to form continuous moulded bodies (2). According to the invention, a cellulose suspension is produced in a pulper (5), from cellulose (3, 4) and water (6), and is then pressed by a pressing means (10). Once the cellulose suspension has been pressed, a tertiary amine oxide, especially N-methylmorpholine-N-oxide, is supplied as a solvent in order to obtain a cellulose solution. The cost-efficiency and the ecofriendliness of the inventive method and device can be improved by at least partially recirculating the press water (11) pressed by the pressing means (10) to the pulper (5). Furthermore, the proportion of press water (15) to water (6) varies according to the metal content of the cellulose (3, 4) and/or the cellulose solution.
IPC 8 full level
D01F 2/00 (2006.01); D01D 1/02 (2006.01); D01D 5/06 (2006.01); D01F 2/02 (2006.01)
CPC (source: EP KR US)
C08B 1/003 (2013.01 - KR); D01D 1/02 (2013.01 - EP KR US); D01D 5/06 (2013.01 - EP US); D01F 2/00 (2013.01 - EP KR US); D10B 2201/22 (2013.01 - KR)
Citation (search report)
See references of WO 2005113869A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005113869 A1 20051201; WO 2005113869 A8 20060302; CN 101018896 A 20070815; CN 101018896 B 20100616; DE 102004024028 A1 20051208; DE 102004024028 B4 20100408; EP 1747308 A1 20070131; KR 100854506 B1 20080826; KR 20070011597 A 20070124; TW 200538591 A 20051201; TW I301517 B 20081001; US 2008042309 A1 20080221
DOCDB simple family (application)
EP 2005002097 W 20050228; CN 200580023083 A 20050228; DE 102004024028 A 20040513; EP 05707658 A 20050228; KR 20067026068 A 20061211; TW 94114579 A 20050505; US 56905805 A 20050228