EP 2313552 B1 20130109 - METHOD FOR OPTIMIZING THE ENERGY BALANCE IN FORMING UNITS IN MACHINES FOR PRODUCING FIBROUS WEBS AND FORMING UNIT
Title (en)
METHOD FOR OPTIMIZING THE ENERGY BALANCE IN FORMING UNITS IN MACHINES FOR PRODUCING FIBROUS WEBS AND FORMING UNIT
Title (de)
VERFAHREN ZUR OPTIMIERUNG DER ENERGIEBILANZ IN FORMIEREINHEITEN IN MASCHINEN ZUR HERSTELLUNG VON FASERSTOFFBAHNEN UND FORMIEREINHEIT
Title (fr)
PROCÉDÉ D'OPTIMISATION DU BILAN ÉNERGÉTIQUE DES UNITÉS DE FORMAGE DANS DES MACHINES DE FABRICATION DE BANDES DE MATIÈRES FIBREUSES, AINSI QU'UNITÉ DE FORMAGE
Publication
Application
Priority
- EP 2009059406 W 20090722
- DE 102008040688 A 20080724
Abstract (en)
[origin: WO2010010109A1] The invention relates to a method for optimizing the energy balance of a forming unit (1) in a machine for producing fibrous webs (F), in which a fiber suspension (FS), which is fed to the forming unit (1) by way of a material ramp (3) after the immobility point (IP) is reached, is passed through at least two de-watering devices (E2 through En) within a compression zone (VZ) and to a subsequent functional unit (6). The invention is characterized in that a setpoint value for a target dryness (Xsoll-TGziel) to be set is predefined based on the existing de-watering elements (E1-En) as a function of a theoretical maximum achievable dryness (TGmax) under plant conditions in the area of the transition zone (17), said setpoint being selected such that it is less than the theoretical maximum achievable dryness (TGmax) but is equal to or greater than a required minimum dryness in the area of the transition zone (17), and that the target dryness (TGziel) is controlled by lowering the inlet dryness (TGE-ein) at one of the last de-watering devices (En) disposed in the direction of passage of the fiber suspension (FS) within the compression zone (VZ).
IPC 8 full level
D21G 9/00 (2006.01)
CPC (source: EP US)
D21F 1/52 (2013.01 - EP US); D21F 3/10 (2013.01 - EP US); D21F 9/003 (2013.01 - EP US); D21G 9/0027 (2013.01 - EP US)
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)
DE 102008040688 A1 20100128; CN 102105635 A 20110622; CN 102105635 B 20121205; EP 2313552 A1 20110427; EP 2313552 B1 20130109; US 2011024069 A1 20110203; US 2012145346 A1 20120614; US 8323452 B2 20121204; US 8349136 B2 20130108; WO 2010010109 A1 20100128
DOCDB simple family (application)
DE 102008040688 A 20080724; CN 200980128834 A 20090722; EP 09780911 A 20090722; EP 2009059406 W 20090722; US 201113333712 A 20111221; US 85894310 A 20100818