(19)
(11) EP 3 464 715 A1

(12)

(43) Date of publication:
10.04.2019 Bulletin 2019/15

(21) Application number: 17739623.1

(22) Date of filing: 01.06.2017
(51) International Patent Classification (IPC): 
D21C 7/10(2006.01)
 D21C 7/14(2006.01)
(86) International application number:
PCT/FI2017/050408
(87) International publication number:
WO 2017/212111 (14.12.2017 Gazette 2017/50)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30) Priority: 06.06.2016 FI 20165470

(71) Applicant: Andritz Oy
00180 Helsinki (FI)

(72) Inventors:
  • KETTUNEN, Auvo
    48800 Kotka (FI)
  • ENGSTRÖM, Johan
    02700 Kauniainen (FI)
  • PIIRA, Jussi
    00180 Helsinki (FI)

(74) Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)

   


(54) METHOD OF PRODUCING CHEMICAL PULP AT A DIGESTER PLANT OF A CHEMICAL PULP MILL