(19)
(11) EP 1 797 235 A1

(12)

(43) Date of publication:
20.06.2007 Bulletin 2007/25

(21) Application number: 05795252.5

(22) Date of filing: 04.10.2005
(51) International Patent Classification (IPC): 
D21C 1/06(2006.01)
D21C 3/24(2006.01)
 D21C 1/00(2006.01)
(86) International application number:
PCT/FI2005/050346
(87) International publication number:
WO 2006/037860 (13.04.2006 Gazette 2006/15)
(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: 04.10.2004 FI 20041288

(71) Applicant: Metso Paper, Inc.
00130 Helsinki (FI)

(72) Inventors:
  • HERNESNIEMI, Lasse
    68660 Pietarsaari (FI)
  • TUOMINEN, Antti
    28300 Pori (FI)
  • NYKÄNEN, Tuomo
    Duluth, Georgia 30097 (US)
  • LAMPINEN, Rami
    33500 Tampere (FI)

(74) Representative: Matilainen, Mirja Helena et al
Oy Jalo Ant-Wuorinen AB, Iso Roobertinkatu 4-6 A
00120 Helsinki
00120 Helsinki (FI)

   


(54) IMPROVED ALKALINE PROCESS AND SYSTEM FOR PRODUCING PULP