EP 2350383 A4 20130918 - APPARATUS AND METHOD FOR DEWATERING CELLULOSE PULP WITH IMPROVED DEWATERING EFFICIENCY
Title (en)
APPARATUS AND METHOD FOR DEWATERING CELLULOSE PULP WITH IMPROVED DEWATERING EFFICIENCY
Title (de)
VORRICHTUNG UND VERFAHREN ZUR ENTWÄSSERUNG VON ZELLULOSEPULPE MIT VERBESSERTER ENTWÄSSERUNGSEFFIZIENZ
Title (fr)
APPAREIL ET PROCÉDÉ D'ESSORAGE DE PÂTE CELLULOSIQUE À EFFICACITÉ D'ESSORAGE AMÉLIORÉE
Publication
Application
Priority
- SE 2009051215 W 20091023
- SE 0802285 A 20081027
Abstract (en)
[origin: WO2010050883A1] The invention relates to an apparatus (1) for dewatering cellulose pulp, which apparatus includes two press rolls (2), arranged next to each other, each press roll (2) being provided inside guide surfaces (3), such that a pulp passage (4) is formed between each press roll (2) and the corresponding guide surface (3), wherein an inlet (5) for transferring pulp or the like to said pulp passage (4) is arranged at a first point at each press roll, and wherein the press rolls (2) are arranged to rotate in opposite directions (D1, resp. D2) so as to convey the pulp in a first operational direction (F1) towards a nip (6) that is formed between them at a second point, close to where the guide surfaces (3) intersect, each press roll (2) having a perforated outer surface (7) for withdrawing filtrate from said pulp or the like. At their point of intersection, the guide surfaces (3) include an outlet (8') for withdrawing filtrate that is rejected from the nip (6), said outlet (8') being arranged substantially opposite of the nip (6) and directed such that the filtrate removed through said outlet (8') is conveyed from the pulp passage through a clearance (9') that is formed in a space between the guide surfaces (3). The invention also relates to a corresponding method.
IPC 8 full level
D21C 9/18 (2006.01); B30B 9/20 (2006.01); D21C 9/06 (2006.01)
CPC (source: EP SE)
Citation (search report)
- [XP] WO 2009075643 A1 20090618 - METSO PAPER INC [FI], et al
- [A] US 3263598 A 19660802 - FERDINAND SYLLA KLAUS
- [A] US 3980518 A 19760914 - LJUNG BERNT JOHAN, et al
- [A] WO 2008051157 A1 20080502 - METSO PAPER INC [FI], et al
- [A] US 5902456 A 19990511 - SUNDQVIST INGEMAR [SE], et al
- [A] US 6660161 B2 20031209 - DANIELSSON MAGNUS [SE], et al
- See also references of WO 2010050883A1
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
WO 2010050883 A1 20100506; CA 2737310 A1 20100506; CN 102197175 A 20110921; EP 2350383 A1 20110803; EP 2350383 A4 20130918; SE 0802285 A1 20100428; SE 0802285 A2 20100720; SE 533737 C2 20101221
DOCDB simple family (application)
SE 2009051215 W 20091023; CA 2737310 A 20091023; CN 200980143695 A 20091023; EP 09823903 A 20091023; SE 0802285 A 20081027