EP 1597427 A1 20051123 - A METHOD AND A PLANT FOR PRODUCING AND TREATING WOOD FIBRES
Title (en)
A METHOD AND A PLANT FOR PRODUCING AND TREATING WOOD FIBRES
Title (de)
VERFAHREN UND ANLAGE ZUR HERSTELLUNG UND BEHANDLUNG VON HOLZFASERN
Title (fr)
PROCEDE ET INSTALLATION POUR PRODUIRE ET TRAITER DES FIBRES DE BOIS
Publication
Application
Priority
- SE 2004000180 W 20040211
- SE 0300385 A 20030211
Abstract (en)
[origin: WO2004072362A1] The present invention relates to a plant and a method for producing and treating wood fibres in a plant comprising a fibre-producing part having a chip preheater (1) and a beater (2) for freeing fibre from wood chips. Such a plant and such a method are included as parts in a continuous production process of board and the object is to reduce the emission discharges of foremost VOC and formaldehyde, during different parts of the process as well as from the finished product. The method comprises feeding of wood chips (A) into an upper part of the chip preheater (1), discharge of wood chips in the bottom of the chip preheater to a screw conveyor (12) for further transportation into the beater (2), compression of the wood chips in a compression zone (15) in the screw conveyor, supply of steam (B) into the lower part of the chip preheater for washing fed chips in the counterflow direction, disposal (8) of flue gases in the form of released organic emissions, steam and air in the upper part of the chip preheater, as well as disposal of flue gases generated during the compression through an outlet (13) arranged in the compression zone. The plant has the corresponding parts.
IPC 1-7
IPC 8 full level
D21B 1/12 (2006.01)
CPC (source: EP US)
D21B 1/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2004072362A1
Citation (third parties)
Third party :
- US 4163525 A 19790807 - REINHALL ROLF B [US]
- US 4037792 A 19770726 - PETERSON VIKING PER
- US 4059237 A 19771122 - MANNSTROM BO KNUT
- US 4298425 A 19811103 - RANZEN CARL-OLOV B, et al
- US 4129166 A 19781212 - SIGSBEE RAYMOND A
- US 4421595 A 19831220 - HUUSARI ERKKI [FI]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004072362 A1 20040826; BR PI0407339 A 20060110; CA 2512993 A1 20040826; CN 1748057 A 20060315; EP 1597427 A1 20051123; RU 2005128278 A 20060127; RU 2345186 C2 20090127; SE 0300385 D0 20030211; SE 0300385 L 20040812; SE 524788 C2 20041005; US 2006151133 A1 20060713
DOCDB simple family (application)
SE 2004000180 W 20040211; BR PI0407339 A 20040211; CA 2512993 A 20040211; CN 200480003719 A 20040211; EP 04710138 A 20040211; RU 2005128278 A 20040211; SE 0300385 A 20030211; US 54469905 A 20050805