EP1404919B2 - Verfahren und vorrichtung zur kontrolle der trocknung im faserstofftrockner - Google Patents

Verfahren und vorrichtung zur kontrolle der trocknung im faserstofftrockner Download PDF

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Publication number
EP1404919B2
EP1404919B2 EP02745457A EP02745457A EP1404919B2 EP 1404919 B2 EP1404919 B2 EP 1404919B2 EP 02745457 A EP02745457 A EP 02745457A EP 02745457 A EP02745457 A EP 02745457A EP 1404919 B2 EP1404919 B2 EP 1404919B2
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EP
European Patent Office
Prior art keywords
web
moisture
pulp
pulp dryer
drying
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Expired - Lifetime
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EP02745457A
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English (en)
French (fr)
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EP1404919B1 (de
EP1404919A1 (de
Inventor
Kristian HAMSTRÖM
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Valmet Technologies Oy
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Metso Paper Oy
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/18—Drying webs by hot air

Definitions

  • the invention concerns a method and apparatus for control of the drying process taking place in a pulp dryer.
  • Pulp dryers operate in the following manner.
  • the wet pulp web arriving from the press with a dry matter content of approximately 50 % at this stage is usually fed from above into the pulp dryer, which includes several blowing fan levels.
  • the blowing fan levels are formed by fan boxes mounted adjacent to each other over the whole cross-sectional area of the web and over the pulp dryer length. From the fan levels a drying gas is blown, which is e.g. hot air, steam or any other medium suitable for the purpose, through a nozzle from both sides towards the web.1n such a contact-free drying the web travels back and forth inside the pulp dryer moving from an upper level towards the lower part of the pulp dryer.
  • the dry matter content of the web is typically about 90 %.
  • the drying is typically controlled by one steam valve affecting all blowing fan levels of the entire pulp dryer.
  • the steam valve is regulated according to the moisture information measured in the web after the pulp dryer.
  • a pulp dryer is known, for example, from the FI Patent Publication 102 981 .
  • the WO publication 99/18405 presents a method for controlling the process variables of drying gases in a dryer. This method measures and controls the process variables of water vapour evaporating from the web as well as the pressure inside the dryer. These variables are controlled independently of each other. In addition, the method controls the process variables of the steam supplied into the dryer and of the steam leaving the dryer, and both groups of process variables are used to control the drying process.
  • the publication does not mention any utilisation of moisture measurement in the control of drying.
  • FI patent 82109 describes a method for improving the quality of the coating of a paper web.
  • the web is coated in a coating station and thereafter dried in three successive drying zones and a cylinder dryer.
  • a first moisture meter is situated between the first and the second drying zone and a second moisture meter is situated between the second and the third drying zone.
  • the first drying zone is adjusted based on the first and the second moisture meter in order to maintain a first set moisture value at the initial end of the second drying zone.
  • the second drying zone is adjusted based on the second moisture meter in order to maintain a second set moisture value at the final end of the second drying zone.
  • the first drying zone can in addition be adjusted based on the moisture measurement of the web leaving the coating station.
  • WO publication 02/50370 is prior art under Article 54(3) EPC for the common designated states AT, DE and SE.
  • WO publication 02/50370 is published on 27 June 2002 and claims priority from FI patent application 20002618 filed on 29 November 2000.
  • WO publication 02/50370 discloses a method for drying a pulp web and a drying box used in the method.
  • the drying box is divided into several drying zones and a last separate cooling zone.
  • Each drying zone comprises a steam valve of its own for adjusting the drying temperature in said drying zone.
  • the temperature of the first drying zone can thus be lower than that of one or more subsequent drying zones to prevent water in the incoming web from boiling.
  • a first moisture sensor and a basis weight sensor are provided before the drying box and a second moisture sensor is provided after the drying box.
  • Each drying zone is additionally provided with a temperature sensor and a thermocouple of its own.
  • the basis weight sensor, the first moisture sensor, as well as the first and the second temperature sensor are used to control the first two drying zones.
  • the second moisture sensor, as well as the fourth and the fifth temperature sensor are used to control the two last drying zones.
  • the third temperature sensor is used to control the second, third and forth drying zone.
  • the purpose of the present invention is to bring about a quicker and more exact method than the present ones for controlling and managing the moisture profile of a pulp web in the machine direction.
  • the method according to the invention is mainly characterised by what is defined in claim 1.
  • the apparatus according to the invention is characterised by what is defined in claim 8.
  • the pulp dryer is divided into two or more sections, each one of which is controlled by its own steam valve.
  • the moisture control of the pulp dryer is improved in such a way that the moisture measurement to be performed in the web section between the press and the pulp dryer and between the drying sections is utilised to regulate the steam valves of the pulp dryer.
  • the information obtained from the measurement points is taken to the control unit of the steam valve controlling the section corresponding to the measurement point of the pulp dryer, which control unit in addition to this preferably uses as control information also the basis weight measurement information and the machine speed information. In this manner the moisture information of the web arriving in the drying section can be used by controlling the steam valve in a derivative manner.
  • the final moisture of the web after the dryer can also be taken into account at the same time.
  • sections of the dryer divided into two or more parts can be controlled more exactly than before by their own steam valves.
  • the total evaporation of the pulp dryer can be calculated more easily and more exactly and this information can be used in the energy management of the pulp dryer and in trouble diagnostics. At the same time, moisture control during grade change is facilitated thanks to the improved control.
  • Figure 1 shows a state-of-the-art control system for a pulp dryer.
  • a Web W arrives from a press P and it is taken through the top part of the pulp dryer 10 into the pulp dryer 10.
  • the pulp dryer 10 includes turning rolls 11 supporting the web W and blowing fan levels for drying the web W.
  • the blowing fan levels include hot air blowing boxes 12, from which hot air is blown through nozzles towards the web from both sides.
  • the web W travels in the dryer 10 through the blowing fan levels step by step from the top downwards and it leaves the dryer 10 through the lower part.
  • the moisture of the pulp web W is observed by a first moisture sensor S 0 , which is mounted to a measuring beam 30 1 or which is separate.
  • the first moisture sensor S 0 may be either a spot measurement sensor or a sensor moving over the cross machine direction of the web back and forth across its width, or any other suitable means measuring the moisture.
  • a later moisture sensor S N which is located in connection with a measuring beam 30 2 , and this moisture information h N is used in the control unit 21 of a steam valve 20 to control the moisture degree of the pulp web W.
  • the later moisture sensor S N may also function as a sensor separate from the measuring beam 30 2 . Measurement information on the basis weight BW and on the machine velocity v is preferably also brought to the control unit 21.
  • Figure 2 shows the moisture profile of the pulp web W in the machine direction inside the pulp dryer, when the moisture content of the pulp web changes in the desired manner.
  • the vertical axis shows the moisture content of the pulp web on an arbitrary scale, while the horizontal axis shows the location of the pulp web inside the pulp dryer. According to the curve shown in the figure, the moisture content of the pulp web is highest at the inlet to the pulp dryer (0 m), and the moisture content drops evenly when travelling towards the final end of the pulp dryer (900 m).
  • the allowed range of variation of the moisture content is also shown by dashed lines in Figure 2 , within which range the moisture content may be controlled by the method according to the invention.
  • FIG. 3 a block diagram of a control method of a pulp dryer, wherein the pulp dryer 10' is divided into two sections 10'a, 10'b.
  • a first moisture sensor S 0 connected to the web section between the press P and the pulp dryer 10', which first moisture sensor is either separate or is mounted to a measuring beam 301, moisture information h 0 is taken to the control unit 21'a of the steam valve 20'a of the first drying section 10'a.
  • the first moisture sensor S 0 is either a spot measurement sensor or a sensor moving over the cross machine direction of the web back and forth across its width or any other moisture measuring means suitable for the purpose.
  • a moisture measurement signal h N is taken to a web moisture management unit 22'b, which supplies a control signal to the control unit 21'b of the steam valve 20'b of the second section 10'b.
  • the control unit 21'b of the steam valve 20'b of the second section 10'b receives from a steam pressure measurement unit 23 a steam pressure value p b , which is preferably used in the continuous regulation of the control unit 21'b of the steam valve.
  • Information on the basis weight measurement BW and on the machine velocity v is preferably supplied both to the control unit 21'a of the steam valve in the first section and to the moisture management unit 22'b. Measuring of the basis weight BV can be performed either by a basis weight sensor mounted to measuring beam 30 1 or the basis weight information may be supplied in other ways to control unit 21'a.
  • the moisture level of the web W is regulated by supplying steam into the drying sections, which steam dries the web W.
  • the pressure and/or quantity of the steam is controlled by a steam valve.
  • the setting value of the web's W moisture circle is changed e.g. separately for each grade, and the control of the steam valve is changed continuously as a function of time.
  • the feedforward of moisture information ho from the first moisture sensor So to the control unit 21'a of the steam valve 20'a of the first section 10'a results in a more exact and quicker moisture control for the pulp dryer 10.
  • FIG 4 shows an embodiment of the invention, wherein the pulp dryer 10 is divided into more than two drying sections 10 1 , 10 2 , ..., 10 N .
  • Each drying section may be e.g. one blowing fan level of the pulp dryer 10 including the travelling level of the web W and blowing fan boxes 12 placed on its both sides.
  • Each drying section 10 1 , ... 10 N is controlled in a similar manner by steam valves 20 1 , ..., 20 N , which for their part are similarly controlled by control units 21 1 , ..., 21 N .
  • a first moisture sensor S 0 is located before the pulp dryer 10.
  • a second moisture sensor S 1 is located in the section between drying section 10 1 and drying section 10 2 .
  • a moisture sensor S N-1 is located before the last drying section 10 N , and after the last drying section 10 N , that is, in the web section located at the outlet of the pulp dryer, a moisture sensor S N is located, which measures the final moisture of the pulp web W after the pulp dryer 10.
  • the moisture information h 0 of moisture sensor S 0 is taken to control the unit 21 1 , which controls the steam valve 20 1 .
  • information on the web's basis weight and velocity may be taken to the control unit 21 1 , and this information may also be used to control the valve 20 1 .
  • feedforward is achieved from the moisture sensor S 0 before the pulp dryer to control the drying section 10 1 .
  • a control signal c 1 may also be taken from the control unit 21 1 to one or more control units 21 2 , ..., 20 N of the steam valves 20 2 , ..., 20 N located later.
  • the control signal c 1 may be either moisture measurement information or valve control information.
  • feedforward is achieved from the moisture sensor S 0 before the pulp dryer in order to control one or more drying sections 10 1 , ..., 10 N of the pulp dryer 10.
  • the control may take place either based only on the signal arriving from the control unit 21 1 or based only on the signal from the control unit prior to the concerned drying section (e.g. drying section 10 2 would be controlled based only on the control signal of the control unit 21 2 ) or by using both signals.
  • Each section 10 1 , ..., 10 N of the pulp dryer is controlled in a similar manner by a moisture sensor S 1 , ..., S N-1 located before each section.
  • the last section 10 N of the pulp dryer 10 is controlled in a feedback manner based on the measurement information from the moisture sensor S N located after the pulp dryer.
  • at least one drying section 10 1 , .... 10 N of the pulp dryer is controlled in a feedforward manner and at least one drying section is controlled in a feedback manner. Feedback preferably takes place based on the measurement information of the last section.
  • FIG. 5 shows an embodiment of the present invention wherein the moisture information is used for controlling the blowing speed of the pulp dryer's blowing boxes.
  • the first section 10 1 of the pulp dryer is controlled in the same manner as was described earlier.
  • From the later moisture sensor S N located after the pulp dryer measurement information h N is obtained, which is taken to the control unit 12c for the blowing speed of the blowing boxes 12, which control unit controls the blowing speed of the blowing boxes 12.
  • the moisture information h N obtained from moisture sensor S N is also taken to the control unit 21 N for the steam valve 20 N , which controls the pulp dryer's steam valve in the manner described above.
  • the embodiment of the invention shown in Figure 5 may also be combined with the control options presented in Figure 4 .
  • the blowing speed control of blowing boxes is shown in connection with one drying section only, but it is possible to implement the control also in more drying sections. Especially the drying sections in the final end of the drying part are preferably controlled.
  • the web moisture is measured before and after the pulp dryer in a manner known as such, wherein the moisture sensor measures the web moisture either as spot measurement or by a traversing measuring device over the entire web width or by some other moisture-measuring method suitable for the purpose.
  • the measured moisture information is utilised in a new manner, wherein the web moisture information measured before the pulp dryer is taken in a feedforward manner to a steam valve performing continuous control of the quantity of steam supplied to the pulp dryer.
  • feedback moisture control can also be used to control the blowing speed of blowing boxes 12.
  • this control may be implemented by feedforwarding the measurement information of the first moisture sensor to the control unit of the blowing boxes.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Claims (10)

  1. Verfahren zum Steuern des in einem Pulpetrockner stattfindenden Trocknungsprozesses, wobei der Pulpetrockner mehrere Gebläselüfterstufen aufweist, von denen Trocknungsgas zu beiden Seiten der Bahn hin geblasen wird, und wobei das Verfahren die folgenden Schritte aufweist:
    Messen der Feuchtigkeitsinformation (h0) der Bahn an dem Bahnabschnitt, der in den Pulpetrockner eintritt, durch einen ersten Feuchtigkeitssensor (S0),
    Messen der Feuchtigkeitsinformation (hN) der Bahn an dem aus dem Pulpetrockner herauskommenden Bahnabschnitt durch einen letzten Feuchtigkeitssensor (SN),
    Teilen des Pulpetrockners (10) in zwei oder mehr Trocknungsabschnitte (101, ..., 10N), von denen jeder durch sein eigenes Dampfventil (201, ..., 20N) gesteuert ist,
    Messen der Feuchtigkeit der Pulpebahn (W) durch einen Feuchtigkeitssensor (S1, ..., SN-1), der zwischen jedem Trocknungsabschnitt (101, ..., 10N) angeordnet ist, und
    Steuern der Feuchtigkeitshöhe der Pulpebahn (W) separat in jedem Trocknungsabschnitt (101, ..., 10N) durch eine Steuereinheit (211, ..., 21N), die eingerichtet ist, um das Dampfventil (201, ..., 20N) jedes Trocknungsabschnitts (101, ..., 10N) auf Grundlage der Messinformation des Feuchtigkeitssensors (S0, ..., SN-1), der vor dem Trocknungsabschnitt liegt, zu steuern.
  2. Verfahren gemäß Anspruch 1, gekennzeichnet durch Steuern der Feuchtigkeitshöhe der Pulpebahn (W) in kontinuierlicher Weise.
  3. Verfahren gemäß einem der Ansprüche 1 oder 2, gekennzeichnet durch Ausführen einer Rückführung der Steuerung des Pulpetrockners (10) auf der Grundlage der Messinformation des letzten Abschnitts (10N).
  4. Verfahren gemäß einem der Ansprüche 1 bis 3, gekennzeichnet durch Steuern der Feuchtigkeitshöhe der Pulpebahn (W) durch Regulieren der Menge an Dampf, die zu einem Trocknungsabschnitt (101, ..., 10N) geliefert wird.
  5. Verfahren gemäß einem der Ansprüche 1 bis 4, gekennzeichnet durch Anwenden der Messinformation des Feuchtigkeitssensors / der Feuchtigkeitssensoren (S0, ..., SN) zum Steuern der Gebläsegeschwindigkeit von Gebläsekästen (12).
  6. Verfahren gemäß einem der Ansprüche 1 bis 5, gekennzeichnet durch Bringen der Information der Messung des Basisgewichts (BW) und der Maschinengeschwindigkeit (v) zu der Steuereinheit (211, ..., 21N) des Dampfventils (20; 20'a; 20'b; (201, ..., 20N).
  7. Verfahren gemäß einem der Ansprüche 1 bis 6, gekennzeichnet durch Steuern des Betriebs der Presse (P) auf der Grundlage der Messinformation (h0), die durch den ersten Feuchtigkeitssensor (S0) geliefert wird, der vor dem Pulpetrockner (10) angeordnet ist.
  8. Gerät zum Steuern des in einem Pulpetrockner stattfindenden Trocknungsprozesses, wobei in dem Gerät der Pulpetrockner mehrere Gebläselüfterstufen aufweist, von denen der Gebläsestrom aus Trocknungsgas an beiden Seiten der Bahn eingerichtet ist, und wobei ein erster Feuchtigkeitssensor (S1) für den Bahnabschnitt angeordnet ist, der in den Pulpetrockner eintritt, und ein letzter Feuchtigkeitssensor (SN) für den Bahnabschnitt angeordnet ist, der aus dem Pulpetrockner herauskommt und wobei die Feuchtigkeitshöhe der Pulpebahn, die in dem Pulpetrockner vorhanden ist, durch ein Dampfventil / durch Dampfventile gesteuert wird, und wobei der Pulpetrockner (10) in zwei oder mehr Trocknungsabschnitte (101, ..., 10N) geteilt ist, von denen jeder durch sein eigenes Dampfventil (201, ..., 20N) gesteuert ist, ein Feuchtigkeitssensor (S1, ..., SN-1) zwischen jedem Trocknungsabschnitt (101, ..., 10N) angeordnet ist, und eine separate Steuerung der Feuchtigkeitshöhe der Pulpebahn (W) für jeden Trocknungsabschnitt (101, ..., 10N) mit Hilfe einer Steuereinheit (211, ..., 21N) zum Steuern des Dampfventils (201, ..., 20N) jedes Trocknungsabschnitts (101, ..., 10N) auf der Grundlage der Messinformation des Feuchtigkeitssensors (S0, ..., SN-1), der vor dem Trocknungsabschnitt liegt, eingerichtet ist.
  9. Gerät gemäß Anspruch 8, dadurch gekennzeichnet, dass die Feuchtigkeitssteuerung jedes Trocknungsabschnitts (101, ..., 10N) in dem Pulpetrockner kontinuierlich ist.
  10. Gerät gemäß Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Steuerung für das Dampfventil (201) von dem ersten Trocknungsabschnitt (101) des Pulpetrockners (10) auf der Grundlage der Messinformation (h0) verwirklicht wird, die durch den ersten Feuchtigkeitssensor (S0) geliefert wird.
EP02745457A 2001-07-06 2002-07-04 Verfahren und vorrichtung zur kontrolle der trocknung im faserstofftrockner Expired - Lifetime EP1404919B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20011482 2001-07-06
FI20011482A FI20011482A0 (fi) 2001-07-06 2001-07-06 Menetelmä ja laitteisto sellukuivaimessa tapahtuvan kuivatusprosessin säätämiseksi
PCT/FI2002/000612 WO2003004764A1 (en) 2001-07-06 2002-07-04 Method and apparatus for control of drying process taking place in a pulp dryer

Publications (3)

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EP1404919A1 EP1404919A1 (de) 2004-04-07
EP1404919B1 EP1404919B1 (de) 2006-08-30
EP1404919B2 true EP1404919B2 (de) 2010-10-20

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EP02745457A Expired - Lifetime EP1404919B2 (de) 2001-07-06 2002-07-04 Verfahren und vorrichtung zur kontrolle der trocknung im faserstofftrockner

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EP (1) EP1404919B2 (de)
AT (1) ATE338162T1 (de)
DE (1) DE60214380T3 (de)
ES (1) ES2271288T5 (de)
FI (1) FI20011482A0 (de)
WO (1) WO2003004764A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022090058A1 (en) * 2020-10-26 2022-05-05 Andritz Technology And Asset Management Gmbh Method of controlling the drying of cellulose pulp in a drying step of a pulp production process

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1344538A1 (de) 2002-03-14 2003-09-17 Degradable Solutions AG Poröses und bioabbaubares Implantatmaterial und Verfahren zu seiner Herstellung
US8163030B2 (en) 2004-05-06 2012-04-24 Degradable Solutions Ag Biocompatible bone implant compositions and methods for repairing a bone defect
SE535634C2 (sv) 2010-11-16 2012-10-23 Andritz Tech & Asset Man Gmbh Cellulosatork som har nedre blåslådor samt förfarande för torkning av en bana av cellulosamassa
SE535329C2 (sv) * 2010-11-29 2012-06-26 Andritz Tech & Asset Man Gmbh Metod för att torka en massabana och en massatork innefattande en inspektionsanordning för analysering av massabanans position eller förekomst av massarester
SE542620C2 (en) 2018-09-25 2020-06-16 Andritz Tech & Asset Man Gmbh Method of determining the moisture content of a web of cellulose pulp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619360A (en) † 1968-12-17 1971-11-09 Beloit Corp Basis weight control system for a papermaking machine
US4074441A (en) † 1976-03-08 1978-02-21 Frederick D. Helversen Rotary through dryer having multiple vacuum chambers and associated heaters
US4696115A (en) † 1986-07-22 1987-09-29 Nabisco Brands, Inc. Method and apparatus for drying wet particulate material to a predetermined uniform moisture content

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9800067D0 (sv) * 1998-01-15 1998-01-15 Flaekt Ab Sätt att reducera elenergiförbrukningen i en anläggning för torkning av en materialbana
SE514397C2 (sv) * 1999-06-30 2001-02-19 Flaekt Ab Förfarande vid torkning av ett banformigt material
FI110626B (fi) 2000-11-29 2003-02-28 Metso Paper Inc Menetelmä ja laitteisto kuitupohjaisen massarainan kuivaamiseksi
SE519878C2 (sv) * 2001-02-05 2003-04-22 Flaekt Ab Förfarande för reglering och kontroll av torrhalten vid torkning av ett banformigt material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619360A (en) † 1968-12-17 1971-11-09 Beloit Corp Basis weight control system for a papermaking machine
US4074441A (en) † 1976-03-08 1978-02-21 Frederick D. Helversen Rotary through dryer having multiple vacuum chambers and associated heaters
US4696115A (en) † 1986-07-22 1987-09-29 Nabisco Brands, Inc. Method and apparatus for drying wet particulate material to a predetermined uniform moisture content

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STIG SALKVIST: "Skogsindustrins Utbildning i Markaryd AB", TORKNING AV MASSA DEL 2 (ISBN 91-7322-198-8), 1997 †

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022090058A1 (en) * 2020-10-26 2022-05-05 Andritz Technology And Asset Management Gmbh Method of controlling the drying of cellulose pulp in a drying step of a pulp production process

Also Published As

Publication number Publication date
ES2271288T5 (es) 2011-03-15
EP1404919B1 (de) 2006-08-30
ES2271288T3 (es) 2007-04-16
EP1404919A1 (de) 2004-04-07
ATE338162T1 (de) 2006-09-15
FI20011482A0 (fi) 2001-07-06
WO2003004764A1 (en) 2003-01-16
DE60214380D1 (de) 2006-10-12
DE60214380T2 (de) 2007-09-13
DE60214380T3 (de) 2011-04-21

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