METHOD AND ARRANGEMENT FOR TREATING FILTRATE AFTER OXYGEN DELIGNIFICATION OF CHEMICAL PULP COOKED TO A HIGH KAPPA NUMBER - Patent 2689063

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EP 2 689 063 A1

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(43)	Date of publication:
	29.01.2014 Bulletin 2014/05

(21)	Application number: 12761412.1

(22)	Date of filing: 21.03.2012

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International Patent Classification (IPC):

D21C 9/02^(2006.01)

D21C 9/147^(2006.01)

(86)	International application number:
	PCT/FI2012/050272

(87)	International publication number:
	WO 2012/127111 (27.09.2012 Gazette 2012/39)

(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

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Priority:

22.03.2011 FI 20115277
22.03.2011 FI 20115278
15.07.2011 FI 20115754

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

(72)	Inventors:
	VEHMAA, Janne FI-49220 Siltakylä (FI) ENGSTRÖM, Johan FI-02700 Kauniainen (FI) PIIRA, Jussi FI-48601 Kotka (FI)

(74)	Representative: HOFFMANN EITLE
	Patent- und Rechtsanwälte Arabellastrasse 4 81925 München 81925 München (DE)

(54)	METHOD AND ARRANGEMENT FOR TREATING FILTRATE AFTER OXYGEN DELIGNIFICATION OF CHEMICAL PULP COOKED TO A HIGH KAPPA NUMBER