(19)
(11) EP 1 834 034 A1

(12)

(43) Date of publication:
19.09.2007 Bulletin 2007/38

(21) Application number: 05777705.4

(22) Date of filing: 05.09.2005
(51) International Patent Classification (IPC): 
D21C 9/147(2006.01)
(86) International application number:
PCT/SE2005/001274
(87) International publication number:
WO 2006/071163 (06.07.2006 Gazette 2006/27)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 30.12.2004 SE 0403202

(71) Applicant: Kvaerner Pulping AB
651 15 Karlstad (SE)

(72) Inventors:
  • SNEKKENES, Vidar
    S-SE-652 19 KARLSTAD (SE)
  • SAETHERÃ…SEN, Jonas
    S-SE-663 42 HAMMARÖ (SE)
  • GUSTAVSSON, Lennart
    S-SE-653 50 KARLSTAD (SE)
  • RAGNAR, Martin
    S-SE-653 40 KARLSTAD (SE)

   


(54) METHOD FOR OXYGEN DELIGNIFICATION OF CELLULOSE PULP BY MIXING OF CHEMICALS