EP 4146860 A1 20230315 - METHOD AND APPARATUS FOR DEFIBRATING WOOD CHIPS, AND A RETURN STEAM PIPE FOR SUCH AN APPARATUS
Title (en)
METHOD AND APPARATUS FOR DEFIBRATING WOOD CHIPS, AND A RETURN STEAM PIPE FOR SUCH AN APPARATUS
Title (de)
VERFAHREN UND VORRICHTUNG ZUM ZERFASERN VON HOLZSPÄNEN UND RÜCKLAUFDAMPFROHR FÜR EINE SOLCHE VORRICHTUNG
Title (fr)
PROCÉDÉ ET APPAREIL POUR DÉFIBRAGE DE COPEAUX DE BOIS ET TUYAU DE VAPEUR DE RETOUR DESTINÉ À UN TEL APPAREIL
Publication
Application
Priority
- SE 2050526 A 20200507
- SE 2021050271 W 20210326
Abstract (en)
[origin: WO2021225490A1] The invention relates to a method and an apparatus for defibrating wood chips comprising a preheater (130) and a defibrator (150), said preheater comprising a wood chips inlet and a wood chips outlet, the defibrator comprising a wood chips inlet and a wood fiber outlet, the wood chips outlet of the preheater is connected to said wood chips inlet of said defibrator via a feeder pipe (139) comprising at least one wood chips feeding arrangement (152) for feeding wood chips to said defibrator, a return steam pipe (110) is arranged between said feeder pipe and said preheater, characterized in that said return steam pipe (110) is provided with a cleaning pipe (120) for providing a gas into said return steam pipe.
IPC 8 full level
D21B 1/14 (2006.01)
CPC (source: EP SE)
Designated contracting state (EPC)
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 state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021225490 A1 20211111; EP 4146860 A1 20230315; EP 4146860 A4 20240626; SE 2050526 A1 20210817; SE 543857 C2 20210817
DOCDB simple family (application)
SE 2021050271 W 20210326; EP 21800183 A 20210326; SE 2050526 A 20200507