WO2013156275A1 - Procédé et dispositif destinés à mouiller une bande de matière fibreuse - Google Patents

Procédé et dispositif destinés à mouiller une bande de matière fibreuse Download PDF

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Publication number
WO2013156275A1
WO2013156275A1 PCT/EP2013/056355 EP2013056355W WO2013156275A1 WO 2013156275 A1 WO2013156275 A1 WO 2013156275A1 EP 2013056355 W EP2013056355 W EP 2013056355W WO 2013156275 A1 WO2013156275 A1 WO 2013156275A1
Authority
WO
WIPO (PCT)
Prior art keywords
moistening
fluid
water
fibrous web
feed
Prior art date
Application number
PCT/EP2013/056355
Other languages
German (de)
English (en)
Inventor
Frank Wegehaupt
Martin Dauner
Original Assignee
Voith Patent Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Priority to CN201380020543.3A priority Critical patent/CN104246069A/zh
Priority to EP13715920.8A priority patent/EP2839075A1/fr
Publication of WO2013156275A1 publication Critical patent/WO2013156275A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/008—Steam showers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices

Definitions

  • the invention relates to a method and a device for moistening a moving fibrous web, in particular a paper, tissue or board web.
  • a moistening fluid containing at least one sprayed water which is provided in a master container, is generally fed to an applicator and at least partially applied to the fibrous web, wherein the moistening agent portion not applied to the fibrous web is conveyed by means of a suction device is sucked off again.
  • the very small droplet sizes generated by the nozzle give a great deal fine mist, which causes the fibrous web is evenly moistened.
  • the amount of moistening fluid emerging from the nozzles of the nozzle moistener is selected to be approximately twice as large as would be necessary for the actual moistening of the fibrous web, since not all of the spray reaches the fibrous web , A certain proportion is moved out of the wetting area with the boundary layer of the moving web.
  • the excess moistening fluid must not enter the machine, so that modern nozzle moisteners have an extraction system for extracting the excess mist. The extracted part is generally not reused and ends up in the wastewater.
  • the temperature of the moistening fluid is, in addition to the filtration, the temperature of the moistening fluid.
  • the temperature control to approx. 50-60 ° C is important in order to achieve an optimal penetration of the water into the likewise warm paper web.
  • the treated humidifying fluid has z. B. when using condensate a temperature of 80-99 ° C. It is therefore necessary to provide cooling.
  • a colder fluid such. B. boiler feed water or deionized water, however, is a heating, usually by means of heat exchangers or electric heating coils required.
  • One of the objects of the invention is to propose a method and a device for reducing the spray water consumption.
  • a method of the aforementioned type in which a moistening fluid containing at least one spray water is provided in a reservoir, fed to an applicator and applied by means of the applicator at least partially on the fibrous web, wherein the non-applied to the fibrous web moistening fluid by means a suction device is sucked.
  • At least one further fluid is added to the moistening fluid.
  • the further fluid may have a lower quality in relation to the required quality parameters of the spray water.
  • the additional fluid may be fresh water.
  • at least a portion of the aspirated moistening fluid is re-mixed with the moistening fluid. Whereby the admixing of the returned moistening fluid into the original container or directly into the inlet or outlet of the original container can take place.
  • the humidifying fluid may be treated condensate, boiler feed water or deionized water that is heated or cooled to a temperature of 30 ° C to 70 ° C, preferably 40 ° C to 60 ° C.
  • the temperature is decisive for how good the penetration of the humectant into the fibrous web is.
  • the aspirated moistening agent may be filtered prior to being returned to the moistening agent stream. This is of particular importance when larger portions of the aspirated moistening agent are to be supplied to the moistening fluid.
  • the extracted moistening fluid can be removed by the suction z. B. also contain fibers of the fibrous web or other dirt particles that could clog the nozzles of the applicator.
  • At least one moistening fluid property of the aspirated moistening fluid is measured before it is returned to the moistening fluid.
  • the return of the moistening fluid should be controlled so that the moistening fluid is returned only when a threshold value of at least one property parameter is reached, undershot or exceeded. This ensures that only moistened moistening agent is returned if it has sufficient quality. Otherwise, this is removed.
  • a property of the mixed moistening fluid in the feed line to the nozzle moistener can be measured, and the feed into the moistening agent stream is controlled or regulated in such a way that a threshold value of at least one property parameter in the spraying water is not reached, is exceeded or exceeded.
  • At least one of the following humectant properties is measured: electrical conductivity, pH and / or solids content
  • the moistening fluid can be mixed from a plurality of suitable spraying waters. This can be condensate, boiler feed water and / or demineralised water.
  • a further fluid such as fresh water
  • the temperature of the mixed moistening fluid can thus be controlled to a temperature of 30 ° C to 70 ° C, preferably to 40 ° C to 60 ° C.
  • the temperature of the moistening agent is thus regulated or adjusted by the mixing of the differently tempered media. As a result, can be dispensed with in the ideal case to a heat exchanger for heating or cooling or this can be at least dimensioned smaller.
  • the moistening device for moistening a moving fibrous web with a fluid, comprising a reservoir with a supply for storing and supplying moistening agent, an applicator by means of which the moistening agent is at least partially applicable to the fibrous web, and a suction device by means of which the moistening moiety is sucked which has not reached the fibrous web, wherein the document container has a second feed, by means of which at least one further fluid can be mixed into the original container.
  • the second supply may comprise a filter device, by means of which the further fluid, in particular the aspirated moistening fluid, is filterable.
  • a further supply of fresh water may be present in order to mix fresh water into the wetting fluid and / or to cool the temperature of the spray water in the storage container to a temperature of 30 ° C. to 70 ° C., preferably 40 ° C. to 60 ° C.
  • the second supply may comprise a measuring device and a control or regulating device, by means of which at least one Property parameter of the other fluid is measurable, in particular at least one property parameter of the aspirated humectant.
  • the second supply is thus designed such that it can be controlled or regulated so that a threshold value of at least one property parameter in the moistening fluid is not reached, undershot or exceeded.
  • FIG. 1 shows an embodiment of a moistening device according to the invention.
  • the application device 18 consists essentially of atomizing nozzles 15 and the suction device 24.
  • the moistening fluid 3 is atomized in such a way that the fibrous web 21 to be moistened is moistened even at high web speeds.
  • the excess Beweuchtungsfluidanteil that does not reach the fibrous web due to the turbulence of the moving fibrous web is sucked off again with the help of the suction device 24.
  • treated water may be used as the humidifying fluid 3 provided in the storage tank 11.
  • the humidifying fluid 3 provided in the storage tank 11.
  • the moistening fluid 3 under pressure to the atomizer nozzles 15 of the Düsenfeuchters 18.
  • the resulting from the sputtering excess portion of the moistening fluid is sucked by means of the exhaust fan 17 through the separator 16 and deposited.
  • the document container 1 1 comprises at least two supply lines.
  • treated water For humidification, treated water is used, which is provided in a storage container. From there it is transported under pressure to the atomizing nozzles 15 of the nozzle moistener, which produce a fine spray 23. Since not all of the spray is absorbed by the fibrous web, it is necessary to suck the excess spray.
  • the second supply also includes a measuring system 8, a pump 19, a filter 20 and a control valve 5.
  • the measuring system 8 is connected to the controller 13, which in turn regulates the control valve 5, whereby the inflow amount of the aspirated moistening fluid in the master tank 1 1 is adjustable ,
  • the extracted moistening fluid is checked for its quality. It can, for.
  • the electrical conductivity the pH and / or the solids content are measured. In this case, this measurement can be used to regulate the admixed amount of the humidifying wetting fluid in accordance with the parameters of the wetting fluid specification to be observed.
  • the aspirated moistening fluid may be returned to a central condensate collector of the paper machine or condensate collector returning to the Treatment of the condensate leads (eg to the power plant).
  • the execution can be supplemented by a further feed, which allows the moistening fluid 3 to add fresh water.
  • the mixing ratio can be chosen arbitrarily, but preferably in the range between 1:10 and 10: 1.
  • the supplied fresh water can be checked for its quality by automated measuring systems. In this case, this measurement can be used for control, so that only so much fresh water is fed that the parameters of the specification of the moistening fluid are adhered to the nozzle moistener. Both measuring systems can be advantageously connected to each other, so that both quality measurements are used for control in order to feed only enough fresh water for mixing that the parameters of the specification of the water to the nozzle moistener are complied with.
  • the automated measuring system 8 can check the quality of the humidifying fluid in the feed line 4 to the nozzle moistener. It can, for. As the electrical conductivity, the pH and / or the solids content are measured. In this case, this measurement can be used so that only the admixed amount of the aspirated moistening fluid, and / or the feed of the fresh water is regulated in accordance with the parameters of the specification of the moistening fluid to be maintained.
  • a temporary, non-automated water analysis of the water to be mixed or of the water supplied to the nozzle moistener can be used to adjust the mixing ratio
  • the treated water in this case condensate, generally has a temperature of 80-99 ° C and must be cooled to 40-60 ° C for use as water spray.
  • treated spray water such as boiler feed water or demineralised water has too low a temperature and must be heated by means of a heat exchanger by means of hot water, or steam, or electrically.
  • the setting of the spray temperature at too hot condensate takes place in an advantageous manner by mixing a too cold water, eg boiler feed water or deionized water and / or fresh water.
  • the moistening fluid in the supply line to the nozzle moistener is checked for its temperature. In this case, this measurement can be used to ensure that the admixed amount of cold water is controlled according to the spray temperature to be maintained.

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  • Paper (AREA)

Abstract

L'invention concerne un procédé destiné à mouiller une bande de matière fibreuse (21) qui se déplace, notamment une bande de papier, de papier sanitaire et domestique ou de carton, lequel procédé consiste à préparer dans un réservoir (11) un fluide de mouillage (3) contenant au moins une eau de pulvérisation, à l'acheminer vers un dispositif d'application (18) et à l'appliquer au moins partiellement sur la bande de matière fibreuse (21) au moyen du dispositif d'application (18), la proportion du fluide de mouillage (3) qui n'est pas appliquée sur la bande de matière fibreuse (3) étant aspirée au moyen d'un dispositif d'aspiration (24), au moins un autre fluide étant incorporé au fluide de mouillage (3).
PCT/EP2013/056355 2012-04-17 2013-03-26 Procédé et dispositif destinés à mouiller une bande de matière fibreuse WO2013156275A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380020543.3A CN104246069A (zh) 2012-04-17 2013-03-26 用于给纤维幅加湿的方法和设备
EP13715920.8A EP2839075A1 (fr) 2012-04-17 2013-03-26 Procédé et dispositif destinés à mouiller une bande de matière fibreuse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012206259 2012-04-17
DE102012206259.9 2012-04-17

Publications (1)

Publication Number Publication Date
WO2013156275A1 true WO2013156275A1 (fr) 2013-10-24

Family

ID=48092917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/056355 WO2013156275A1 (fr) 2012-04-17 2013-03-26 Procédé et dispositif destinés à mouiller une bande de matière fibreuse

Country Status (3)

Country Link
EP (1) EP2839075A1 (fr)
CN (1) CN104246069A (fr)
WO (1) WO2013156275A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938483A (zh) * 2014-05-09 2014-07-23 浙江汉普新材料技术有限公司 一种造纸机上的纸张增湿设备
US8858213B2 (en) 2013-02-22 2014-10-14 The Procter & Gamble Company Equipment and processes for the application of atomized fluid to a web substrate
CN104153238A (zh) * 2014-08-07 2014-11-19 浙江汉普新材料技术有限公司 一种扩散性纸张增湿设备
US10060062B2 (en) 2013-02-22 2018-08-28 The Procter & Gamble Company Equipment and processes for the application of atomized fluid to a web substrate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013158A1 (fr) * 1997-09-09 1999-03-18 Runtech Systems Oy Procede et appareil d'application d'un agent de traitement a une bande de matiere
DE102004044743A1 (de) * 2004-07-30 2006-03-23 Metso Paper, Inc. Verfahren zur Benetzung einer Papierbahn und Netzapparat einer Papierbahn

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1017456B (zh) * 1989-07-05 1992-07-15 青州铝箔纸总厂 一种真空镀铝纸的回潮方法及设备
DE19929844A1 (de) * 1999-06-29 2001-01-04 Baldwin Grafotec Gmbh Flüssigkeits-Versorgungsvorrichtung
JP3432819B1 (ja) * 2002-07-31 2003-08-04 株式会社メンテック 液体吹付付与装置、それを使用した液体の吹き付け付与方法、及び薬液
EP1774094A4 (fr) * 2004-07-30 2010-08-25 Metso Automation Oy Procede et dispositif d'humidification de bande de papier
CN101495241B (zh) * 2006-06-16 2012-09-19 曼泰克株式会社 喷嘴装置、使用该喷嘴装置的药液的供给方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999013158A1 (fr) * 1997-09-09 1999-03-18 Runtech Systems Oy Procede et appareil d'application d'un agent de traitement a une bande de matiere
DE102004044743A1 (de) * 2004-07-30 2006-03-23 Metso Paper, Inc. Verfahren zur Benetzung einer Papierbahn und Netzapparat einer Papierbahn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8858213B2 (en) 2013-02-22 2014-10-14 The Procter & Gamble Company Equipment and processes for the application of atomized fluid to a web substrate
US10060062B2 (en) 2013-02-22 2018-08-28 The Procter & Gamble Company Equipment and processes for the application of atomized fluid to a web substrate
CN103938483A (zh) * 2014-05-09 2014-07-23 浙江汉普新材料技术有限公司 一种造纸机上的纸张增湿设备
CN104153238A (zh) * 2014-08-07 2014-11-19 浙江汉普新材料技术有限公司 一种扩散性纸张增湿设备

Also Published As

Publication number Publication date
CN104246069A (zh) 2014-12-24
EP2839075A1 (fr) 2015-02-25

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