EP 1740763 A2 20070110 - METHOD FOR CONTROLLING A BLEACHING PROCESS FOR WASTE PAPER TREATMENT AND BLEACHING DEVICE FOR CARRYING OUT SAID METHOD
Title (en)
METHOD FOR CONTROLLING A BLEACHING PROCESS FOR WASTE PAPER TREATMENT AND BLEACHING DEVICE FOR CARRYING OUT SAID METHOD
Title (de)
VERFAHREN ZUM STEUERN EINES BLEICHPROZESSES FÜR DIE ALTPAPIERAUFBEREITUNG, SOWIE EINE BLEICHVORRICHTUNG ZUR DURCHFÜHRUNG EINES SOLCHEN VERFAHRENS
Title (fr)
PROCEDE DE COMMANDE D'UN PROCESSUS DE BLANCHIMENT POUR LE TRAITEMENT DES VIEUX PAPIERS ET DISPOSITIF DE BLANCHIMENT PERMETTANT LA MISE EN OEUVRE DUDIT PROCEDE
Publication
Application
Priority
- EP 2005051729 W 20050419
- DE 102004020496 A 20040426
Abstract (en)
[origin: WO2005103373A2] The invention provides a method for controlling a bleaching process for waste paper treatment, which comprises the steps of preparing a fibrous material suspension, measuring the whiteness of the fibrous material suspension, mixing said fibrous material suspension with a bleaching agent, introducing the mixed fibrous material suspension into a bleaching vessel (7) and removing the mixed fibrous material suspension from said bleaching vessel after a certain period of time. Said method is characterised in that the bleaching agent contains a mixture of several substances, whereby the quantity and/or composition of the added bleaching agent is adjusted according to the measured whiteness of the fibrous material suspension, such that a set whiteness as constant as possible is obtained for the removed fibrous material suspension.
IPC 8 full level
D21C 9/00 (2006.01); D21C 5/02 (2006.01); D21C 9/10 (2006.01)
CPC (source: EP)
D21C 5/02 (2013.01); D21C 9/10 (2013.01); D21C 9/1052 (2013.01); Y02W 30/64 (2015.05)
Citation (search report)
See references of WO 2005103373A2
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
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
WO 2005103373 A2 20051103; WO 2005103373 A3 20070412; CN 101065535 A 20071031; DE 102004020496 A1 20051117; EP 1740763 A2 20070110; RU 2006141637 A 20080610; RU 2346096 C2 20090210
DOCDB simple family (application)
EP 2005051729 W 20050419; CN 200580011813 A 20050419; DE 102004020496 A 20040426; EP 05740018 A 20050419; RU 2006141637 A 20050419