METHOD AND APPARATUS FOR DEFIBRATING WOOD CHIPS, AND A RETURN STEAM PIPE FOR SUCH AN APPARATUS - Patent 4146860

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EP 4 146 860 A1

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(43)	Date of publication:
	15.03.2023 Bulletin 2023/11

(21)	Application number: 21800183.2

(22)	Date of filing: 26.03.2021

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International Patent Classification (IPC):

D21B 1/14^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	D21D 1/30; D21B 1/14

(86)	International application number:
	PCT/SE2021/050271

(87)	International publication number:
	WO 2021/225490 (11.11.2021 Gazette 2021/45)

(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:
	KH MA MD TN

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Priority:

07.05.2020 SE 2050526

(71)	Applicant: VALMET AB
	85194 Sundsvall (SE)

(72)	Inventor:
	LINDBLOM, Thommy 129 54 Hägersten (SE)

(54)	METHOD AND APPARATUS FOR DEFIBRATING WOOD CHIPS, AND A RETURN STEAM PIPE FOR SUCH AN APPARATUS