EP1959053A1 - Device for drying a fibrous web - Google Patents

Device for drying a fibrous web Download PDF

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Publication number
EP1959053A1
EP1959053A1 EP08150640A EP08150640A EP1959053A1 EP 1959053 A1 EP1959053 A1 EP 1959053A1 EP 08150640 A EP08150640 A EP 08150640A EP 08150640 A EP08150640 A EP 08150640A EP 1959053 A1 EP1959053 A1 EP 1959053A1
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EP
European Patent Office
Prior art keywords
supply air
fibrous web
suction roll
suction
air chamber
Prior art date
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Granted
Application number
EP08150640A
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German (de)
French (fr)
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EP1959053B1 (en
Inventor
Christian MÜNCH
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Voith Patent GmbH
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Voith Patent GmbH
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Publication date
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Priority to PL08150640T priority Critical patent/PL1959053T3/en
Publication of EP1959053A1 publication Critical patent/EP1959053A1/en
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Publication of EP1959053B1 publication Critical patent/EP1959053B1/en
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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
    • D21F5/182—Drying webs by hot air through perforated cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • 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
    • D21F5/02—Drying on cylinders
    • 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
    • D21F5/20—Waste heat recovery

Definitions

  • the invention has for its object to provide an improved device and an improved machine of the type mentioned.
  • the device or machine should be optimized in particular to the effect that the energy required for the hot-air drying process energy consumption is reduced to a minimum.
  • the drying device comprises an impingement or so-called impingement drying device.
  • the supply air chamber and the discharge chamber may be arranged on the same side of the fibrous web.
  • the supply air chamber and the exhaust air chamber preferably form a common space.
  • the drying device comprises a flow-through drying device.
  • the Zu Kunststoffsch and the exhaust chamber are preferably on opposite sides of the fibrous web.
  • an overpressure in the range of about 0 to about 0.5 bar and preferably in a range of about 0.002 to about 0.3 bar prevails.
  • a negative pressure in a range of about 0 to about 0.8 bar and preferably in a range of about 0.2 to about 0.7 bar prevails.
  • a negative pressure prevails in the exhaust air chamber in a range from about 0.4 to about 0.7 bar.
  • the pressure increasing device comprises at least one fan, which may be, for example, a multi-stage fan or a single-stage fan.
  • a blower in question is sold under the name "Tubair”.
  • the pressure increasing device may also comprise at least one radial fan and / or at least one axial fan.
  • the temperature of the supply air or supply air portion originating from the pressure increasing device is preferably ⁇ 100 ° C, in particular ⁇ 150 ° C and preferably ⁇ 200 ° C.
  • the supply air chamber is supplied at least substantially 100% of the supply air from the pressure side of the pressure increasing device.
  • the heating device may in particular comprise a gas burner, a gas turbine and / or the like.
  • the fibrous web can be guided in particular together with a permeable structured band on the suction roll, wherein the fibrous web between the permeable structured band and the suction roll is and the hot air from the hood successively through the permeable structured band and the fibrous web into the suction box of Suction roll flows.
  • a dewatering belt may be passed around the suction roll, which is between the suction roll and the permeable structured strip and through which the hot supply air flows into the suction box of the suction roll.
  • the supply air supplied to the supply air can be partially removed from a hood, which is associated with a drying cylinder, in particular Yankee cylinder which forms a nip together with a pressing element through which the fibrous web is passed after the suction roll.
  • the hot air taken from the hood assigned to the drying cylinder can be fed, in particular as supplementary air, to a pressure-side nozzle and / or a suction-side nozzle of the pressure-increasing device.
  • At least one water separator is provided in an exhaust air discharge line connected to the exhaust air chamber, in a suction-side pipe of the pressure-increasing device and / or in a pressure-side pipe of the pressure-increasing device.
  • the water separator is preferably provided in the flow direction of the recirculated exhaust air in front of the increase of the supply air temperature serving heater and / or provided before the point at which the hood of the drying cylinder removed hot air is supplied.
  • the machine according to the invention for producing a fibrous web provided with a three-dimensional surface structure, in particular a paper, board or tissue web is characterized in that it is provided with a fibrous web according to the invention Drying device is provided, wherein the exhaust chamber formed by the suction box of a suction roll and the Zu Kunststoffsch by a suction roller associated hood and the fibrous web is guided together with a permeable structured band on the suction roll, and wherein the fibrous web between the permeable structured band and the suction roll is located and the hot supply air from the hood successively flows through the permeable structured band and the fibrous web into the suction box of the roller.
  • the permeable structured band and the fibrous web are pressed against the suction roll via a permeable pressing belt, wherein the hot supply air from the hood successively through the permeable press belt, the permeable structured band and the fibrous web into the suction box of Suction roll flows.
  • a dewatering belt may be passed around the suction roll, which is between the suction roll and the permeable structured strip and through which the hot supply air flows into the suction box of the suction roll.
  • Fig. 1 shows a schematic representation of a machine 10 for producing a provided with a three-dimensional surface structure fibrous web 12, which is provided with a device comprising a hot air circuit 14 for drying the fibrous web 12.
  • the fibrous web 12 may in particular be a paper, board or tissue web.
  • the drying device 14 comprises a suction roll 16 with a suction box 18 forming an exhaust air chamber and a hood 20 associated with the suction roll 16 and forming a supply air chamber.
  • the fibrous web 12 is guided together with a permeable structured band 22 on the suction roller 16, wherein the fibrous web 12 between the permeable structured band 22 and the suction roller 16 is located.
  • the permeable structured band 22 and the fibrous web 12 are pressed for example by a permeable pressing belt 24 against the suction roller 16.
  • a permeable pressing belt 24 against the suction roller 16.
  • the hot air from the hood 20 successively flows through the permeable press belt 24, the permeable structured belt 22 and the fibrous web 12 into the suction box 18 of the suction roller 16.
  • a dewatering belt 36 may be passed around the suction roll 16 which lies between the suction roll 16 and the permeable structured ribbon 22 and through which the hot supply air flows into the suction box 18 of the suction roll 16.
  • the permeable press belt 24, the permeable structured belt 22, the fibrous web 12 and the dewatering belt 36 are successively flowed through by the supply air.
  • the machine 10 further comprises a former with two converging drainage belts 22, 26, wherein the inner belt simultaneously forms the permeable structured belt 22 in the present case.
  • the two drainage tapes 22, 26 converge to form a stock inlet gap 28 and are passed over a forming element 30 such as in particular a forming roller.
  • the permeable structured band 22 is formed by the inner dewatering band of the former coming into contact with the forming element 30.
  • the outer dewatering belt 26, which does not come into contact with the forming element 30, is separated again from the fibrous web 12 and the permeable structured belt 22 carrying it after the forming element 30.
  • the pulp suspension is introduced into the stock inlet gap 28.
  • a suction element 14 is provided, through which the fibrous web 12 is held on the permeable structured band 22 or pressed against this permeable structured band 22.
  • the dewatering belt 36 is again separated from the permeable structured belt 22 and the fibrous web 12.
  • a pickup or separating element 38 is provided behind the drying device 14, through which the fibrous web 12 is held at the separation of the dewatering belt 36 to the permeable structured belt 22.
  • the fibrous web 12 is guided together with the permeable structured band 22 by a press nip 44 formed between a drying cylinder 40 preferably formed by a Yankee cylinder and a pressing element 42, such as a press roll. Behind this press nip 44, the permeable structured band 22 is again separated from the drying cylinder (40), while the fibrous web 12 remains on the drying cylinder 40.
  • the drying cylinder 40 is associated with a hood 46.
  • drying cylinder 40 may be associated with a spray tube 48 for coating or the like.
  • the hot air taken from the hood 40 associated with the drying cylinder 40 can also be supplied to the pressure-side nozzle and / or the suction-side nozzle of the pressure-increasing device 56 as supplementary air.
  • a further pressure increasing device 70 may be arranged.
  • a filter 72 may be provided in this supply line 68.
  • a control valve 74 may be arranged in the supply air supply line 60 between the booster 56 and the drying device 14.
  • Fig. 2 shows a schematic cross-sectional view of an exemplary embodiment of the pressure increasing device 56, which can be designed here as a single-stage fan I or as a multi-stage fan II.
  • this fan can be expediently provided with terminals Q Zi for different vacuum heights.
  • the suction roller 16 is associated with the hood 20 at least substantially in the region of the suction box 18.
  • This is supplied with hot and dry as possible supply air, which by the permeable or open structured band 22, which may be in particular a screen, covered fibrous web 12 flows and is discharged via the suction box 18 as exhaust air again. It has been found to be beneficial for an efficient drying process when the air temperature is ⁇ 100 ° C. This is particularly important when steam is used to heat the fibrous web 12.
  • the hood intake air and the suction roll exhaust air are now at least partly recirculated via the pressure increasing device 56.
  • the arrangement is selected on the one hand so that the temperature increase is used by the occurring in the temperature increase device 56 compression for increasing the dewatering process, while on the other hand, the heat exhaust air is reused.
  • supplementary air can be supplied to the pressure-side connection piece and / or the suction-side connection piece of the pressure increase device 56.
  • a condensation device for removing the water in the exhaust air can also be provided.
  • a heater for the supply air is conceivable, in particular to have a control and / or adjustment for the air temperature.

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  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Device for drying paper, cardboard or tissue strips comprises impinging the fibrous strip with process air for drying from a process air chamber (20), passing the waste air from the drying process into a waste air chamber (18), feeding the waste air from the waste air chamber to the suction side (54) of a pressure-raising unit (56) and feeding a part of the process air from the pressure side (58) of the pressure-raising unit to the process air chamber. An independent claim is also included for a machine (10) for producing paper, cardboard or tissue strips with a three-dimensional structure comprising the above drying device. Preferred Features: The process air chamber and the waste air chamber are arranged on the same side or on opposing sides of the fibrous strip.

Description

Die Erfindung betrifft eine Vorrichtung zur Trocknung einer Faserstoffbahn, insbesondere Papier-, Karton- oder Tissuebahn, mittels Heißluft. Sie betrifft ferner eine Maschine zur Herstellung einer mit einer dreidimensionalen Oberflächenstruktur versehenen Faserstoffbahn mit einer solchen Trocknungsvorrichtung.The invention relates to a device for drying a fibrous web, in particular paper, board or tissue web, by means of hot air. It further relates to a machine for producing a fibrous web provided with a three-dimensional surface structure with such a drying device.

Bei den bisher bekannten Vorrichtungen dieser Art ist der jeweilige Heißluft-Trocknungsprozess mit einem relativ hohen Energieaufwand verbunden.In the hitherto known devices of this type, the respective hot-air drying process is associated with a relatively high expenditure of energy.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Vorrichtung sowie eine verbesserte Maschine der eingangs genannten Art zu schaffen. Dabei soll die Vorrichtung bzw. Maschine insbesondere dahingehend optimiert werden, dass der für den Heißluft-Trocknungsprozess erforderliche Energieaufwand auf ein Minimum reduziert wird.The invention has for its object to provide an improved device and an improved machine of the type mentioned. In this case, the device or machine should be optimized in particular to the effect that the energy required for the hot-air drying process energy consumption is reduced to a minimum.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung zur Trocknung einer Faserstoffbahn, insbesondere Papier-, Karton- oder Tissuebahn, mittels Heißluft, bei der die Faserstoffbahn mit der Trocknung dienender Zuluft aus einer Zuluftkammer beaufschlagt wird und bei dem Trocknungsvorgang anfallende Abluft in eine Abluftkammer gelangt, wobei die Abluft aus der Abluftkammer zumindest teilweise der Saugseite einer Druckerhöhungseinrichtung zugeführt ist und der Zuluftkammer zumindest ein Teil der Zuluft von der Druckseite der Druckerhöhungseinrichtung zugeführt ist.This object is achieved by a device for drying a fibrous web, in particular paper, cardboard or tissue web, by means of hot air, in which the fibrous web is acted upon by drying incoming air from a Zuluftkammer and arrives in the drying process accumulating exhaust air in an exhaust chamber, wherein the exhaust air from the exhaust air chamber is at least partially supplied to the suction side of a pressure increasing device and the supply air chamber is supplied at least a portion of the supply air from the pressure side of the pressure increasing device.

Aufgrund dieser Ausbildung ergibt sich ein Heißluftkreislauf, bei dem die beim Trocknungsvorgang anfallende Abluft genutzt wird, wodurch entsprechend Energie eingespart wird.Due to this design results in a hot air circulation, in which the exhaust air occurring during the drying process is used, whereby corresponding energy is saved.

Bei einer bevorzugten praktischen Ausführungsform umfasst die Trocknungsvorrichtung eine Prallströmungs- oder so genannte Impingement-Trocknungseinrichtung.In a preferred practical embodiment, the drying device comprises an impingement or so-called impingement drying device.

In diesem Fall können die Zuluftkammer und die Ablaufkammer auf derselben Seite der Faserstoffbahn angeordnet sein.In this case, the supply air chamber and the discharge chamber may be arranged on the same side of the fibrous web.

Bevorzugt bilden die Zuluftkammer und die Abluftkammer einen gemeinsamen Raum.The supply air chamber and the exhaust air chamber preferably form a common space.

Gemäß einer vorteilhaften alternativen Ausführungsform umfasst die Trocknungsvorrichtung eine Durchströmungs-Trocknungseinrichtung.According to an advantageous alternative embodiment, the drying device comprises a flow-through drying device.

In diesem Fall liegen die Zuluftkammer und die Abluftkammer bevorzugt auf einander entgegengesetzten Seiten der Faserstoffbahn.In this case, the Zuluftkammer and the exhaust chamber are preferably on opposite sides of the fibrous web.

Dabei ist es von Vorteil, wenn in der Zuluftkammer ein Überdruck im Bereich von etwa 0 bis etwa 0,5 bar und vorzugsweise in einem Bereich von etwa 0,002 bis etwa 0,3 bar vorherrscht.It is advantageous if in the supply air chamber, an overpressure in the range of about 0 to about 0.5 bar and preferably in a range of about 0.002 to about 0.3 bar prevails.

Bevorzugt herrscht in der Zuluftkammer ein Überdruck ≥ 0,01, insbesondere ≥ 0,02 und vorzugsweise ≥ 0,05 bar vor.An overpressure ≥ 0.01, in particular ≥ 0.02 and preferably ≥ 0.05 bar, preferably prevails in the supply air chamber.

Von Vorteil ist zudem, wenn in der Abluftkammer ein Unterdruck in einem Bereich von etwa 0 bis etwa 0,8 bar und vorzugsweise in einem Bereich von etwa 0,2 bis etwa 0,7 bar vorherrscht.It is also advantageous if in the exhaust air chamber, a negative pressure in a range of about 0 to about 0.8 bar and preferably in a range of about 0.2 to about 0.7 bar prevails.

Bevorzugt herrscht in der Abluftkammer ein Unterdruck in einem Bereich von etwa 0,4 bis etwa 0,7 bar vor.Preferably, a negative pressure prevails in the exhaust air chamber in a range from about 0.4 to about 0.7 bar.

Gemäß einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Trocknungsvorrichtung umfasst die Druckerhöhungseinrichtung wenigstens ein Gebläse, bei dem es sich beispielsweise um ein mehrstufiges oder auch um ein einstufiges Gebläse handeln kann. Ein solches in Rede stehendes Gebläse wird unter dem Namen "Tubair" verkauft.According to a preferred practical embodiment of the drying device according to the invention, the pressure increasing device comprises at least one fan, which may be, for example, a multi-stage fan or a single-stage fan. Such a blower in question is sold under the name "Tubair".

Vorteilhafterweise kann die Druckerhöhungseinrichtung jedoch auch wenigstens ein Radialgebläse und/oder wenigstens ein Axialgebläse umfassen.Advantageously, however, the pressure increasing device may also comprise at least one radial fan and / or at least one axial fan.

Die Temperatur der von der Druckerhöhungseinrichtung stammenden Zuluft bzw. Zuluftanteils ist bevorzugt ≥ 100°C, insbesondere ≥ 150°C und vorzugsweise ≥ 200°C.The temperature of the supply air or supply air portion originating from the pressure increasing device is preferably ≥ 100 ° C, in particular ≥ 150 ° C and preferably ≥ 200 ° C.

Von Vorteil ist insbesondere auch, wenn der Zuluftkammer mehr als 50 %, insbesondere mehr als 60 %, insbesondere mehr als 70 % und vorzugsweise mehr als 80 % der Zuluft von der Druckseite der Druckerhöhungseinrichtung zugeführt ist.It is also particularly advantageous if the supply air chamber is supplied with more than 50%, in particular more than 60%, in particular more than 70% and preferably more than 80%, of the supply air from the pressure side of the pressure increasing device.

Bei einer zweckmäßigen praktischen Ausführungsform der erfindungsgemäßen Trocknungsvorrichtung ist der Zuluftkammer zumindest im Wesentlichen 100 % der Zuluft von der Druckseite der Druckerhöhungseinrichtung zugeführt.In an expedient practical embodiment of the drying device according to the invention, the supply air chamber is supplied at least substantially 100% of the supply air from the pressure side of the pressure increasing device.

Ist der Zuluftkammer lediglich ein Teil der Zuluft von der Druckseite der Druckerhöhungseinrichtung zugeführt, so kann die restliche Zuluft vorteilhafterweise aus einem anderen Heißluftprozess der Faserstoffbahnherstellung zugeführt sein.If the supply air chamber supplied only a portion of the supply air from the pressure side of the pressure increasing device, so the remaining supply air can be advantageously fed from another hot air process of fibrous web production.

Von Vorteil ist zudem, wenn insbesondere in einer mit der Zuluftkammer verbundenen Zuluft-Zuführleitung ein der Erhöhung der Zulufttemperatur dienender Wärmetauscher vorgesehen ist.It is also advantageous if, in particular in a supply air supply line connected to the supply air, a heat exchanger serving to increase the supply air temperature is provided.

Bei einer bevorzugten praktischen Ausführungsform ist insbesondere in einer mit der Zuluftkammer verbundenen Zuluft-Zuführleitung eine der Erhöhung der Zulufttemperatur dienende, insbesondere einstell- und/oder regelbare Heizeinrichtung vorgesehen.In a preferred practical embodiment, in particular in an inlet air supply line connected to the supply air chamber, a heating device which serves to increase the supply air temperature, in particular adjustable and / or controllable, is provided.

Die Heizeinrichtung kann insbesondere einen Gasbrenner, eine Gasturbine und/oder dergleichen umfassen.The heating device may in particular comprise a gas burner, a gas turbine and / or the like.

Von Vorteil ist insbesondere auch, wenn ein Wasserabscheider, insbesondere eine Kondensationseinrichtung, zur Entfernung von Wasser aus der Abluft vorgesehen ist.It is also particularly advantageous if a water separator, in particular a condensation device, is provided for removing water from the exhaust air.

Gemäß einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Trocknungsvorrichtung ist die Abluftkammer durch den Saugkasten einer Saugwalze und die Zuluftkammer durch eine dieser Saugwalze zugeordnete Haube gebildet.According to a preferred practical embodiment of the drying device according to the invention, the exhaust chamber is formed by the suction box of a suction roll and the supply air chamber by a suction hood associated with this hood.

Dabei kann die Faserstoffbahn insbesondere zusammen mit einem permeablen strukturierten Band über die Saugwalze geführt sein, wobei die Faserstoffbahn zwischen dem permeablen strukturierten Band und der Saugwalze liegt und die heiße Zuluft aus der Haube nacheinander durch das permeable strukturierte Band und die Faserstoffbahn hindurch in den Saugkasten der Saugwalze strömt.In this case, the fibrous web can be guided in particular together with a permeable structured band on the suction roll, wherein the fibrous web between the permeable structured band and the suction roll is and the hot air from the hood successively through the permeable structured band and the fibrous web into the suction box of Suction roll flows.

Bevorzugt werden hierbei das permeable strukturierte Band und die Faserstoffbahn über ein permeables Pressband gegen die Saugwalze gepresst, wobei die heiße Zuluft aus der Haube nacheinander durch das permeable Pressband, das permeable strukturierte Band und die Faserstoffbahn hindurch in den Saugkasten der Saugwalze strömt.In this case, the permeable structured band and the fibrous web are preferably pressed against the suction roll via a permeable pressing belt, wherein the hot supply air from the hood is successively conveyed through the permeable pressing belt, the permeable structured band and the fibrous web passes into the suction box of the suction roll.

Zusätzlich kann ein Entwässerungsband um die Saugwalze geführt sein, das zwischen der Saugwalze und dem permeablen strukturierten Band liegt und durch das hindurch die heiße Zuluft in den Saugkasten der Saugwalze strömt.In addition, a dewatering belt may be passed around the suction roll, which is between the suction roll and the permeable structured strip and through which the hot supply air flows into the suction box of the suction roll.

Gemäß einer weiteren vorteilhaften Ausführungsform kann die der Zuluftkammer zugeführte Zuluft teilweise einer Haube entnommen sein, die einem Trockenzylinder, insbesondere Yankee-Zylinder zugeordnet ist, der zusammen mit einem Presselement einen Walzenspalt bildet, durch den die Faserstoffbahn im Anschluss an die Saugwalze hindurchgeführt ist.According to a further advantageous embodiment, the supply air supplied to the supply air can be partially removed from a hood, which is associated with a drying cylinder, in particular Yankee cylinder which forms a nip together with a pressing element through which the fibrous web is passed after the suction roll.

Dabei kann die der den Trockenzylinder zugeordneten Haube entnommene Heißluft insbesondere als Ergänzungsluft einem druckseitigen Stutzen und/oder einem saugseitigen Stutzen der Druckerhöhungseinrichtung zugeführt sein.In this case, the hot air taken from the hood assigned to the drying cylinder can be fed, in particular as supplementary air, to a pressure-side nozzle and / or a suction-side nozzle of the pressure-increasing device.

Von Vorteil ist insbesondere auch, wenn wenigstens ein Wasserabscheider in einer mit der Abluftkammer verbundenen Abluft-Abführleitung, in einem saugseitigen Stutzen der Druckerhöhungseinrichtung und/oder in einem druckseitigen Stutzen der Druckerhöhungseinrichtung vorgesehen ist.It is also particularly advantageous if at least one water separator is provided in an exhaust air discharge line connected to the exhaust air chamber, in a suction-side pipe of the pressure-increasing device and / or in a pressure-side pipe of the pressure-increasing device.

Dabei ist der Wasserabscheider bevorzugt in Strömungsrichtung der rückgeführten Abluft betrachtet vor der der Erhöhung der Zulufttemperatur dienenden Heizeinrichtung und/oder vor der Stelle vorgesehen, an der die der Haube des Trockenzylinders entnommene Heißluft zugeführt wird.In this case, the water separator is preferably provided in the flow direction of the recirculated exhaust air in front of the increase of the supply air temperature serving heater and / or provided before the point at which the hood of the drying cylinder removed hot air is supplied.

Die erfindungsgemäße Maschine zur Herstellung einer mit einer dreidimensionalen Oberflächenstruktur versehenen Faserstoffbahn, insbesondere Papier-, Karton- oder Tissuebahn, zeichnet sich dadurch aus, dass sie mit einer erfindungsgemäßen Trocknungsvorrichtung versehen ist, wobei die Abluftkammer durch den Saugkasten einer Saugwalze und die Zuluftkammer durch einen dieser Saugwalze zugeordnete Haube gebildet und die Faserstoffbahn zusammen mit einem permeablen strukturierten Band über die Saugwalze geführt ist, und wobei die Faserstoffbahn zwischen dem permeablen strukturierten Band und der Saugwalze liegt und die heiße Zuluft aus der Haube nacheinander durch das permeable strukturierte Band und die Faserstoffbahn hindurch in den Saugkasten der Walze strömt.The machine according to the invention for producing a fibrous web provided with a three-dimensional surface structure, in particular a paper, board or tissue web, is characterized in that it is provided with a fibrous web according to the invention Drying device is provided, wherein the exhaust chamber formed by the suction box of a suction roll and the Zuluftkammer by a suction roller associated hood and the fibrous web is guided together with a permeable structured band on the suction roll, and wherein the fibrous web between the permeable structured band and the suction roll is located and the hot supply air from the hood successively flows through the permeable structured band and the fibrous web into the suction box of the roller.

Bei einer bevorzugten praktischen Ausführungsform der erfindungsgemäßen Maschine werden das permeable strukturierte Band und die Faserstoffbahn über ein permeables Pressband gegen die Saugwalze gepresst, wobei die heiße Zuluft aus der Haube nacheinander durch das permeable Pressband, das permeable strukturierte Band und die Faserstoffbahn hindurch in den Saugkasten der Saugwalze strömt.In a preferred practical embodiment of the machine according to the invention, the permeable structured band and the fibrous web are pressed against the suction roll via a permeable pressing belt, wherein the hot supply air from the hood successively through the permeable press belt, the permeable structured band and the fibrous web into the suction box of Suction roll flows.

Zusätzlich kann ein Entwässerungsband um die Saugwalze geführt sein, das zwischen der Saugwalze und dem permeablen strukturierten Band liegt und durch das hindurch die heiße Zuluft in den Saugkasten der Saugwalze strömt.In addition, a dewatering belt may be passed around the suction roll, which is between the suction roll and the permeable structured strip and through which the hot supply air flows into the suction box of the suction roll.

Die Erfindung wird im Folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung näher erläutert; in dieser zeigen:

Fig. 1
eine schematische Darstellung einer Maschine zur Herstellung einer mit einer dreidimensionalen Oberflächenstruktur versehenen Faserstoffbahn mit einer einen Heißluftkreislauf umfassenden Trocknungsvorrichtung und
Fig. 2
eine schematische Querschnittsdarstellung eines als Druckerhöhungseinrichtung dienenden Gebläses.
The invention will be explained in more detail below with reference to exemplary embodiments with reference to the drawing; in this show:
Fig. 1
a schematic representation of a machine for producing a provided with a three-dimensional surface structure fibrous web with a hot air circulating drying device and
Fig. 2
a schematic cross-sectional view of a pressure increasing device serving as a blower.

Fig. 1 zeigt in schematischer Darstellung eine Maschine 10 zur Herstellung einer mit einer dreidimensionalen Oberflächenstruktur versehenen Faserstoffbahn 12, die mit einer einen Heißluftkreislauf umfassenden Vorrichtung 14 zur Trocknung der Faserstoffbahn 12 versehen ist. Bei der Faserstoffbahn 12 kann es sich insbesondere um eine Papier-, Karton- oder Tissuebahn handeln. Fig. 1 shows a schematic representation of a machine 10 for producing a provided with a three-dimensional surface structure fibrous web 12, which is provided with a device comprising a hot air circuit 14 for drying the fibrous web 12. The fibrous web 12 may in particular be a paper, board or tissue web.

Die Trocknungsvorrichtung 14 umfasst eine Saugwalze 16 mit einem eine Abluftkammer bildenden Saugkasten 18 und eine der Saugwalze 16 zugeordnete, eine Zuluftkammer bildende Haube 20.The drying device 14 comprises a suction roll 16 with a suction box 18 forming an exhaust air chamber and a hood 20 associated with the suction roll 16 and forming a supply air chamber.

Dabei ist die Faserstoffbahn 12 zusammen mit einem permeablen strukturierten Band 22 über die Saugwalze 16 geführt, wobei die Faserstoffbahn 12 zwischen dem permeablen strukturierten Band 22 und der Saugwalze 16 liegt.In this case, the fibrous web 12 is guided together with a permeable structured band 22 on the suction roller 16, wherein the fibrous web 12 between the permeable structured band 22 and the suction roller 16 is located.

Das permeable strukturierte Band 22 und die Faserstoffbahn 12 werden beispielsweise durch ein permeables Pressband 24 gegen die Saugwalze 16 gepresst. Dabei strömt die heiße Luft aus der Haube 20 nacheinander durch das permeable Pressband 24, das permeable strukturierte Band 22 und die Faserstoffbahn 12 hindurch in den Saugkasten 18 der Saugwalze 16.The permeable structured band 22 and the fibrous web 12 are pressed for example by a permeable pressing belt 24 against the suction roller 16. In this case, the hot air from the hood 20 successively flows through the permeable press belt 24, the permeable structured belt 22 and the fibrous web 12 into the suction box 18 of the suction roller 16.

Zusätzlich kann ein Entwässerungsband 36 um die Saugwalze 16 geführt sein, das zwischen der Saugwalze 16 und dem permeablen strukturierten Band 22 liegt und durch das hindurch die heiße Zuluft in den Saugkasten 18 der Saugwalze 16 strömt. Beim vorliegenden Ausführungsbeispiel werden also nacheinander das permeable Pressband 24, das permeable strukturierte Band 22, die Faserstoffbahn 12 und das Entwässerungsband 36 von der Zuluft durchströmt.In addition, a dewatering belt 36 may be passed around the suction roll 16 which lies between the suction roll 16 and the permeable structured ribbon 22 and through which the hot supply air flows into the suction box 18 of the suction roll 16. In the present embodiment, therefore, the permeable press belt 24, the permeable structured belt 22, the fibrous web 12 and the dewatering belt 36 are successively flowed through by the supply air.

Die Maschine 10 umfasst zudem einen Former mit zwei zusammenlaufenden Entwässerungsbändern 22, 26, wobei das Innenband im vorliegenden Fall gleichzeitig das permeable strukturierte Band 22 bildet. Die beiden Entwässerungsbänder 22, 26 laufen unter Bildung eines Stoffeinlaufspalts 28 zusammen und sind über ein Formierelement 30 wie insbesondere eine Formierwalze geführt.The machine 10 further comprises a former with two converging drainage belts 22, 26, wherein the inner belt simultaneously forms the permeable structured belt 22 in the present case. The two drainage tapes 22, 26 converge to form a stock inlet gap 28 and are passed over a forming element 30 such as in particular a forming roller.

Im vorliegenden Fall wird das permeable strukturierte Band 22 also durch das mit dem Formierelement 30 in Kontakt tretende innere Entwässerungsband des Formers gebildet. Das nicht mit dem Formierelement 30 in Kontakt tretende äußere Entwässerungsband 26 wird im Anschluss an das Formierelement 30 wieder von der Faserstoffbahn 12 und dem diese tragenden permeablen strukturierten Band 22 getrennt.In the present case, therefore, the permeable structured band 22 is formed by the inner dewatering band of the former coming into contact with the forming element 30. The outer dewatering belt 26, which does not come into contact with the forming element 30, is separated again from the fibrous web 12 and the permeable structured belt 22 carrying it after the forming element 30.

Mittels eines Stoffauflaufs 32 wird die Faserstoffsuspension in den Stoffeinlaufspalt 28 eingebracht. Zwischen dem Formierelement 30 und der Trocknungsvorrichtung 14 ist ein Saugelement 14 vorgesehen, durch das die Faserstoffbahn 12 an dem permeablen strukturierten Band 22 gehalten bzw. gegen dieses permeable strukturierte Band 22 gedrückt wird.By means of a headbox 32, the pulp suspension is introduced into the stock inlet gap 28. Between the forming element 30 and the drying device 14, a suction element 14 is provided, through which the fibrous web 12 is held on the permeable structured band 22 or pressed against this permeable structured band 22.

Im Anschluss an die Trocknungsvorrichtung 14 wird das Entwässerungsband 36 wieder von dem permeablen strukturierten Band 22 und der Faserstoffbahn 12 getrennt. Dabei ist hinter der Trocknungsvorrichtung 14 ein Pickup- oder Trennelement 38 vorgesehen, durch das die Faserstoffbahn 12 bei der Trennung vom Entwässerungsband 36 an dem permeablen strukturierten Band 22 gehalten wird.Following the drying device 14, the dewatering belt 36 is again separated from the permeable structured belt 22 and the fibrous web 12. In this case, a pickup or separating element 38 is provided behind the drying device 14, through which the fibrous web 12 is held at the separation of the dewatering belt 36 to the permeable structured belt 22.

Im Anschluss daran wird die Faserstoffbahn 12 zusammen mit dem permeablen strukturierten Band 22 durch einen zwischen einem vorzugsweise durch einen Yankee-Zylinder gebildeten Trockenzylinder 40 und einem Presselement 42, wie beispielsweise einer Presswalze gebildeten Pressspalt 44 geführt. Hinter diesem Pressspalt 44 wird das permeable strukturierte Band 22 wieder von dem Trockenzylinder (40) getrennt, während die Faserstoffbahn 12 am Trockenzylinder 40 verbleibt. Dem Trockenzylinder 40 ist eine Haube 46 zugeordnet.Subsequently, the fibrous web 12 is guided together with the permeable structured band 22 by a press nip 44 formed between a drying cylinder 40 preferably formed by a Yankee cylinder and a pressing element 42, such as a press roll. Behind this press nip 44, the permeable structured band 22 is again separated from the drying cylinder (40), while the fibrous web 12 remains on the drying cylinder 40. The drying cylinder 40 is associated with a hood 46.

Zudem kann dem Trockenzylinder 40 ein Spritzrohr 48 zur Beschichtung oder dergleichen zugeordnet sein.In addition, the drying cylinder 40 may be associated with a spray tube 48 for coating or the like.

Dem permeablen strukturierten Band 22 und dem Entwässerungsband 36 können jeweils wenigstens eine so genannte Uhle-Box 50 und/oder wenigstens ein Spritzrohr 52 zugeordnet sein.At least one so-called Uhle box 50 and / or at least one spray tube 52 may be associated with the permeable structured band 22 and the drainage band 36.

Die Vorrichtung 14 dient der Trocknung der Faserstoffbahn 12 mittels Heißluft, indem die Faserstoffbahn 12 mit der Trocknung dienender Zuluft aus der der Saugwalze 16 zugeordneten Haube 20 beaufschlagt wird. Dabei gelangt bei dem Trocknungsvorgang anfallende Abluft in den Saugkasten 18 der Saugwalze 16. Die Abluft aus dem Saugkasten 18 ist zumindest teilweise der Saugseite 54 einer Druckerhöhungseinrichtung 56 zugeführt. Der der Saugwalze 16 zugeordneten Haube 20 ist dann zumindest ein Teil der Zuluft von der Druckseite 58 der Druckerhöhungseinrichtung 56 zugeführt. Es wird somit ein der Trocknung der Faserstoffbahn 12 dienender Heißluftkreislauf gebildet.The device 14 is used to dry the fibrous web 12 by means of hot air, by the fibrous web 12 is supplied with the drying serving supply air from the suction roller 16 associated hood 20. In this case, in the drying process accumulated exhaust enters the suction box 18 of the suction roller 16. The exhaust air from the suction box 18 is at least partially the suction side 54 of a pressure increasing device 56, respectively. The hood 20 associated with the suction roll 16 is then supplied with at least part of the supply air from the pressure side 58 of the pressure increasing device 56. It is thus formed a drying of the fibrous web 12 serving hot air circuit.

Beim vorliegenden Ausführungsbeispiel liegt eine Art Durchströmungs-Trocknungseinrichtung vor, bei der die durch die Haube 20 gebildete Zuluftkammer und die durch den Saugkasten 18 gebildete Abluftkammer auf einander entgegengesetzten Seiten der Faserstoffbahn 12 angeordnet sind.In the present embodiment, there is a type of flow-through drying device in which the supply air chamber formed by the hood 20 and the exhaust chamber formed by the suction box 18 are arranged on opposite sides of the fibrous web 12.

Die Druckerhöhungseinrichtung 56 kann beispielsweise wenigstens ein Gebläse umfassen, das einstufig oder mehrstufig ausgeführt sein kann.For example, the pressure increasing device 56 may comprise at least one fan, which may be single-stage or multi-stage.

Wird der der Saugwalze 16 zugeordneten Haube 20 lediglich ein Teil der Zuluft von der Druckseite 58 der Druckerhöhungseinrichtung 56 bzw. lediglich ein Teil der aus dem die Abluftkammer bildenden Saugkasten 18 stammenden Luft zugeführt, so kann die restliche Zuluft aus einem anderen Heißluftprozess der Faserstoffbahnherstellung zugeführt werden.If the hood 20 associated with the suction roll 16 is supplied with only part of the supply air from the pressure side 58 of the pressure increasing device 56 or only part of the air originating from the suction box 18 forming the exhaust air chamber, then the remaining supply air from another hot air process can be supplied to the fibrous web production ,

Insbesondere in einer mit der Haube 20 verbundenen Zuluft-Zuführleitung 60 kann ein der Erhöhung der Zulufttemperatur dienender Wärmetauscher oder insbesondere einstell- und/oder regelbare Heizeinrichtung 62 vorgesehen sein. Im vorliegenden Fall umfasst die Heizeinrichtung 62 beispielsweise einen Brenner, insbesondere Gasbrenner. Es ist beispielsweise auch die Verwendung einer Gasturbine denkbar.In particular, in a connected to the hood 20 supply air supply line 60 can be provided to increase the supply air temperature serving heat exchanger or in particular adjustable and / or controllable heater 62. In the present case, the heating device 62 comprises, for example, a burner, in particular a gas burner. It is also conceivable, for example, the use of a gas turbine.

Es kann insbesondere auch ein Wasserabscheider 64, insbesondere eine Kondensationseinrichtung, zur Entfernung von Wasser aus der Abluft vorgesehen sein. Beim vorliegenden Ausführungsbeispiel ist ein solcher Wasserabscheider 64 in einer mit dem Saugkasten 18 der Saugwalze 16 verbundenen Abluft-Abführleitung 66 angeordnet. Ein solcher Wasserabscheider kann grundsätzlich beispielsweise auch in einem saugseitigen Stutzen und/oder in einem druckseitigen Stutzen der Druckerhöhungseinrichtung 56 vorgesehen sein.In particular, a water separator 64, in particular a condensation device, can be provided for removing water from the exhaust air. In the present embodiment, such a water separator 64 is arranged in an exhaust air discharge line 66 connected to the suction box 18 of the suction roll 16. Such a water separator can in principle also be provided, for example, in a suction-side nozzle and / or in a pressure-side nozzle of the pressure-increasing device 56.

Wie anhand der Fig. 1 zu erkennen ist, kann beim vorliegenden Ausführungsbeispiel die der der Saugwalze 16 zugeordneten Haube 20 zugeführte Zuluft teilweise auch der dem Trockenzylinder 40 zugeordneten Haube 46 entnommen werden.As based on the Fig. 1 can be seen, in the present embodiment, the inlet of the suction roller 16 associated hood 20 supply air partially also the dryer cylinder 40 associated hood 46 are removed.

Dabei kann die dieser dem Trockenzylinder 40 zugeordneten Haube 46 entnommene Heißluft insbesondere auch als Ergänzungsluft dem druckseitigen Stutzen und/oder dem saugseitigen Stutzen der Druckerhöhungseinrichtung 56 zugeführt sein. In der betreffenden, zu dem bzw. den Stutzen der Druckerhöhungseinrichtung 56 führenden Zuleitung 68 kann eine weitere Druckerhöhungseinrichtung 70 angeordnet sein. Neben Stell- oder Regelventilen kann in dieser Zuleitung 68 insbesondere auch ein Filter 72 vorgesehen sein.In this case, the hot air taken from the hood 40 associated with the drying cylinder 40 can also be supplied to the pressure-side nozzle and / or the suction-side nozzle of the pressure-increasing device 56 as supplementary air. In the relevant, leading to the or the nozzle of the pressure increasing device 56 feed line 68, a further pressure increasing device 70 may be arranged. In addition to adjusting or control valves, in particular a filter 72 may be provided in this supply line 68.

Wie anhand der Fig. 1 zu erkennen ist, kann auch in der Zuluft-Zuführleitung 60 zwischen der Druckerhöhungseinrichtung 56 und der Trocknungsvorrichtung 14 ein Regelventil 74 angeordnet sein.As based on the Fig. 1 can be seen, also in the supply air supply line 60 between the booster 56 and the drying device 14, a control valve 74 may be arranged.

Fig. 2 zeigt in schematische Querschnittsdarstellung eine beispielhafte Ausführungsform der Druckerhöhungseinrichtung 56, die hier als einstufiges Gebläse I oder als mehrstufiges Gebläse II ausgeführt sein kann. Fig. 2 shows a schematic cross-sectional view of an exemplary embodiment of the pressure increasing device 56, which can be designed here as a single-stage fan I or as a multi-stage fan II.

Dabei kann dieses Gebläse zweckmäßigerweise mit Anschlüssen QZi für unterschiedliche Vakuumhöhen versehen sein.In this case, this fan can be expediently provided with terminals Q Zi for different vacuum heights.

Bei der vorliegenden beispielhaften Ausführungsform, wie sie insbesondere in der Fig. 1 dargestellt ist, ist der Saugwalze 16 zumindest im Wesentlichen im Bereich des Saugkastens 18 die Haube 20 zugeordnet. Diese wird mit heißer und möglichst trockener Zuluft versorgt, welche durch die durch das permeable bzw. offene strukturierte Band 22, bei dem es sich insbesondere um ein Sieb handeln kann, abgedeckte Faserstoffbahn 12 strömt und über dem Saugkasten 18 als Abluft wieder abgeführt wird. Es hat sich herausgestellt, dass es für einen effizienten Trocknungsprozess von Vorteil ist, wenn die Lufttemperatur ≥ 100°C ist. Dies ist insbesondere dann wichtig, wenn Dampf zur Aufheizung der Faserstoffbahn 12 verwendet wird.In the present exemplary embodiment, as in particular in the Fig. 1 is shown, the suction roller 16 is associated with the hood 20 at least substantially in the region of the suction box 18. This is supplied with hot and dry as possible supply air, which by the permeable or open structured band 22, which may be in particular a screen, covered fibrous web 12 flows and is discharged via the suction box 18 as exhaust air again. It has been found to be beneficial for an efficient drying process when the air temperature is ≥ 100 ° C. This is particularly important when steam is used to heat the fibrous web 12.

Erfindungsgemäß wird nun die Haubenzuluft und Saugwalzenabluft zumindest zum Teil im Kreislauf über die Druckerhöhungseinrichtung 56 zugeführt. Dabei ist die Anordnung zum einen so gewählt, dass die Temperaturerhöhung durch die in der Temperaturerhöhungseinrichtung 56 erfolgende Verdichtung für die Steigerung des Entwässerungsprozesses genutzt wird, während andererseits die Wärmeabluft wieder verwendet wird.According to the invention, the hood intake air and the suction roll exhaust air are now at least partly recirculated via the pressure increasing device 56. The arrangement is selected on the one hand so that the temperature increase is used by the occurring in the temperature increase device 56 compression for increasing the dewatering process, while on the other hand, the heat exhaust air is reused.

Zum Ausgleich von Luftverlusten kann Ergänzungsluft in den druckseitigen Stutzen und/oder den saugseitigen Stutzen der Druckerhöhungseinrichtung 56 zugeführt werden.To compensate for air losses, supplementary air can be supplied to the pressure-side connection piece and / or the suction-side connection piece of the pressure increase device 56.

Es kann insbesondere auch eine Kondensationsvorrichtung zur Entfernung des Wassers in der Abluft vorgesehen sein.In particular, a condensation device for removing the water in the exhaust air can also be provided.

Ebenso ist der Einsatz einer Heizeinrichtung für die Zuluft denkbar, um insbesondere eine Regelungs- und/oder Einstellmöglichkeit für die Lufttemperatur zu haben.Likewise, the use of a heater for the supply air is conceivable, in particular to have a control and / or adjustment for the air temperature.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Maschinemachine
1212
FaserstoffbahnFibrous web
1414
Trocknungsvorrichtungdrying device
1616
Saugwalzesuction roll
1818
Abluftkammer, SaugkastenExhaust air chamber, suction box
2020
Zuluftkammer, HaubeSupply air chamber, hood
2222
permeables strukturiertes Bandpermeable structured band
2424
permeables Pressbandpermeable press belt
2626
Entwässerungsbanddewatering belt
2828
StoffeinlaufspaltStock inlet gap
3030
Formierelement, FormierwalzeForming element, forming roller
3232
Stoffauflaufheadbox
3434
Saugelementsuction
3636
Entwässerungsbanddewatering belt
3838
Pickup- oder TrennelementPickup or separating element
4040
Trockenzylinder, Yankee-ZylinderDrying cylinder, Yankee cylinder
4242
Presselementpress member
4444
Pressspaltpress nip
4646
HaubeHood
4848
Spritzrohrspray wand
5050
Uhle-BoxUhle box
5252
Spritzrohrspray wand
5454
Saugseitesuction
5656
DruckerhöhungseinrichtungPressure increasing means
5858
Druckseitepressure side
6060
Zuluft-ZuführleitungSupply air supply line
6262
Heizeinrichtungheater
6464
Wasserabscheiderwater
6666
Abluft-AbführleitungExhaust discharge
6868
Zuleitungsupply
7070
weitere Druckerhöhungseinrichtungfurther pressure increasing device
7272
Filterfilter
7474
Regelventilcontrol valve

Claims (35)

Vorrichtung (14) zur Trocknung einer Faserstoffbahn (12), insbesondere Papier-, Karton- oder Tissuebahn, mittels Heißluft, bei der die Faserstoffbahn (12) mit der Trocknung dienender Zuluft aus einer Zuluftkammer (20) beaufschlagt wird und bei dem Trocknungsvorgang anfallende Abluft in eine Abluftkammer (18) gelangt, wobei die Abluft aus der Abluftkammer (18) zumindest teilweise der Saugseite (54) einer Druckerhöhungseinrichtung (56) zugeführt ist und der Zuluftkammer (20) zumindest ein Teil der Zuluft von der Druckseite (58) der Druckerhöhungseinrichtung (56) zugeführt ist.Device (14) for drying a fibrous web (12), in particular paper, board or tissue web, by means of hot air, in which the fibrous web (12) is acted upon by drying incoming air from a supply air chamber (20) and obtained in the drying process exhaust air enters an exhaust chamber (18), wherein the exhaust air from the exhaust chamber (18) at least partially the suction side (54) of a pressure increasing device (56) is supplied and the supply air chamber (20) at least a portion of the supply air from the pressure side (58) of the pressure increasing device (56) is supplied. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass sie eine Prallströmungs-Trocknungseinrichtung umfasst.Device according to claim 1,
characterized,
that it comprises an impingement flow drying device. Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet,
dass die Zuluftkammer (20) und die Abluftkammer (18) auf derselben Seite der Faserstoffbahn (12) angeordnet sind.Device according to claim 2,
characterized,
that the supply air chamber (20) and the exhaust chamber (18) on the same side of the fibrous web (12) are arranged. Vorrichtung nach Anspruch 2 oder 3,
dadurch gekennzeichnet,
dass die Zuluftkammer (20) und die Abluftkammer (18) einen gemeinsamen Raum bilden.Device according to claim 2 or 3,
characterized,
that the supply air chamber (20) and the exhaust chamber (18) form a common space. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
dass sie eine Durchströmungs-Trocknungseinrichtung umfasst.Device according to claim 1,
characterized,
that it comprises a flow-through drying device. Vorrichtung nach Anspruch 5,
dadurch gekennzeichnet,
dass die Zuluftkammer (20) und die Abluftkammer (18) auf einander entgegengesetzten Seiten der Faserstoffbahn (12) angeordnet sind.Device according to claim 5,
characterized,
that the supply air chamber (20) and the exhaust chamber (18) are arranged on opposite sides of the fibrous web (12). Vorrichtung nach Anspruch 5 oder 6,
dadurch gekennzeichnet,
dass in der Zuluftkammer (20) ein Überdruck (Pü) im Bereich von etwa 0 bis etwa 0,5 bar und vorzugsweise in einem Bereich von etwa 0,002 bis etwa 0,3 bar vorherrscht.Apparatus according to claim 5 or 6,
characterized,
that in the supply air chamber (20) an overpressure (P ü ) in the range of about 0 to about 0.5 bar, and preferably in a range of about 0.002 to about 0.3 bar prevails. Vorrichtung nach einem der Ansprüche 5 bis 7,
dadurch gekennzeichnet,
dass in der Zuluftkammer (20) ein Überdruck (Pü) ≥ 0,01, insbesondere ≥ 0,02 und vorzugsweise ≥ 0,05 bar vorherrscht.Device according to one of claims 5 to 7,
characterized,
that in the supply air chamber (20) prevails an overpressure (P ü ) ≥ 0.01, in particular ≥ 0.02 and preferably ≥ 0.05 bar. Vorrichtung nach einem der Ansprüche 5 bis 8,
dadurch gekennzeichnet,
dass in der Abluftkammer (18) ein Unterdruck (Pu) in einem Bereich von etwa 0 bis etwa 0,8 bar und vorzugsweise in einem Bereich von etwa 0,2 bis etwa 0,7 bar vorherrscht.Device according to one of claims 5 to 8,
characterized,
that in the exhaust air chamber (18) a negative pressure (P u ) in a range of about 0 to about 0.8 bar, and preferably in a range of about 0.2 to about 0.7 bar prevails. Vorrichtung nach einem der Anspruch 9,
dadurch gekennzeichnet,
dass in der Abluftkammer (18) ein Unterdruck (Pu) in einem Bereich von etwa 0,4 bis etwa 0,7 bar vorherrscht.Device according to one of the claims 9,
characterized,
that in the exhaust air chamber (18) a negative pressure (P u ) prevails in a range of about 0.4 to about 0.7 bar. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Druckerhöhungseinrichtung (56) wenigstens ein Gebläse umfasst.Device according to one of the preceding claims,
characterized,
that the pressure increasing means (56) comprises at least one fan. Vorrichtung nach Anspruch 11,
dadurch gekennzeichnet,
dass die Druckerhöhungseinrichtung (56) wenigstens ein mehrstufiges Gebläse umfasst.Device according to claim 11,
characterized,
that the pressure increasing means (56) comprises a multi-stage blower least. Vorrichtung nach Anspruch 11 oder 12,
dadurch gekennzeichnet,
dass die Druckerhöhungseinrichtung (56) wenigstens ein einstufiges Gebläse umfasst.Device according to claim 11 or 12,
characterized,
that the pressure increasing means (56) comprises a single-stage blower least. Vorrichtung nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet,
dass die Druckerhöhungseinrichtung (56) wenigstens ein Radialgebläse umfasst.Device according to one of claims 11 to 13,
characterized,
in that the pressure increasing device (56) comprises at least one radial fan. Vorrichtung nach einem der Ansprüche 11 bis 14,
dadurch gekennzeichnet,
dass die Druckerhöhungseinrichtung (56) wenigstens ein Axialgebläse umfasst.Device according to one of claims 11 to 14,
characterized,
that the pressure increasing means (56) comprises an axial fan at least. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Temperatur der von der Druckerhöhungseinrichtung (56) stammenden Zuluft bzw. Zuluftanteils ≥ 100 °C, insbesondere ≥ 150 °C und vorzugsweise ≥ 200 °C ist.Device according to one of the preceding claims,
characterized,
that the temperature of the pressure increasing means (56) is derived supply air or Zuluftanteils ≥ 100 ° C, in particular ≥ 150 ° C and preferably ≥ 200 ° C. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Zuluftkammer (20) mehr als 50 %, insbesondere mehr als 60 %, insbesondere mehr als 70 % und vorzugsweise mehr als 80 % der Zuluft von der Druckseite (58) der Druckerhöhungseinrichtung (56) zugeführt ist.Device according to one of the preceding claims,
characterized,
that the supply air chamber (20) more than 50%, in particular more than 60%, in particular more than 70% and preferably more than 80% of the supply air from the pressure side (58) of the pressure increasing means (56) is supplied. Vorrichtung nach Anspruch 17,
dadurch gekennzeichnet,
dass der Zuluftkammer (20) zumindest im Wesentlichen 100 % der Zuluft von der Druckseite (58) der Druckerhöhungseinrichtung (56) zugeführt ist.Device according to claim 17,
characterized,
that the supply air chamber (20) is at least substantially 100% of the supply air supplied from the pressure side (58) of the pressure increasing means (56). Vorrichtung nach einem der Ansprüche 1 bis 17,
dadurch gekennzeichnet,
dass der Zuluftkammer (20) lediglich ein Teil der Zuluft von der Druckseite (58) der Druckerhöhungseinrichtung (56) und die restliche Zuluft aus einem anderen Heißluftprozess der Faserstoffbahnherstellung zugeführt ist.Device according to one of claims 1 to 17,
characterized,
that the supply air chamber (20) is supplied only a part of the supply air from the pressure side (58) of the pressure increasing device (56) and the remaining supply air from another hot air process of the fibrous web production. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass insbesondere in einer mit der Zuluftkammer (20) verbundenen Zuluft-Zuführleitung ein der Erhöhung der Zulufttemperatur dienender Wärmetauscher vorgesehen ist.Device according to one of the preceding claims,
characterized,
in that, in particular in a supply air supply line connected to the supply air chamber (20), a heat exchanger serving to increase the supply air temperature is provided. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass insbesondere in einer mit der Zuluftkammer verbundenen Zuluft-Zuführleitung eine der Erhöhung der Zulufttemperatur dienende, insbesondere einstell- und/oder regelbare Heizeinrichtung (62) vorgesehen ist.Device according to one of the preceding claims,
characterized,
provided that, in particular in a supply-air chamber connected to the inlet air supply line a of increasing the supply air temperature serving, in particular adjustable and / or controllable heating device (62). Vorrichtung nach Anspruch 21,
dadurch gekennzeichnet,
dass die Heizeinrichtung (62) einen Gasbrenner umfasst.Device according to claim 21,
characterized,
in that the heating device (62) comprises a gas burner. Vorrichtung nach Anspruch 21,
dadurch gekennzeichnet,
dass die Heizeinrichtung (62) eine Gasturbine umfasst.Device according to claim 21,
characterized,
in that the heating device (62) comprises a gas turbine. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass ein Wasserabscheider (64), insbesondere eine Kondensationseinrichtung, zur Entfernung von Wasser aus der Abluft vorgesehen ist.Device according to one of the preceding claims,
characterized,
that a water separator (64), in particular a condensation apparatus, is provided for the removal of water from the exhaust air. Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass die Abluftkammer durch den Saugkasten (18) einer Saugwalze (16) und die Zuluftkammer durch eine dieser Saugwalze (16) zugeordnete Haube (20) gebildet ist.Device according to one of the preceding claims,
characterized,
that the exhaust air chamber through the suction box (18) of a suction roll (16) and the supply air chamber through one of these suction roll (16) associated with the dome (20) is formed. Vorrichtung nach Anspruch 25,
dadurch gekennzeichnet,
dass die Faserstoffbahn (12) zusammen mit einem permeablen strukturierten Band (22) über die Saugwalze (16) geführt ist, wobei die Faserstoffbahn (12) zwischen dem permeablen strukturierten Band (22) und der Saugwalze (16) liegt und die heiße Zuluft aus der Haube (20) nacheinander durch das permeable strukturierte Band (22) und die Faserstoffbahn (12) hindurch in den Saugkasten (18) der Saugwalze (16) strömt.Device according to claim 25,
characterized,
in that the fibrous web (12), together with a permeable structured band (22), is guided over the suction roll (16), wherein the fibrous web (12) lies between the permeable structured band (22) and the suction roll (16) and the hot supply air is exhausted the hood (20) successively flows through the permeable structured band (22) and the fibrous web (12) into the suction box (18) of the suction roll (16). Vorrichtung nach Anspruch 26,
dadurch gekennzeichnet,
dass das permeable strukturierte Band (22) und die Faserstoffbahn (12) durch ein permeables Pressband (24) gegen die Saugwalze (16) gepresst werden und die heiße Zuluft aus der Haube (20) nacheinander durch das permeable Pressband (24), das permeable strukturierte Band (22) und die Faserstoffbahn (12) hindurch in den Saugkasten (18) der Saugwalze (16) strömt.Device according to claim 26,
characterized,
that the permeable structured band (22) and the fibrous web (12) are pressed against the suction roll (16) by a permeable pressing belt (24) and the hot supply air from the hood (20) is successively forced through the permeable pressing belt (24) structured band (22) and the fibrous web (12) passes into the suction box (18) of the suction roll (16). Vorrichtung nach Anspruch 26 oder 27,
dadurch gekennzeichnet,
dass zusätzlich ein Entwässerungsband (36) um die Saugwalze (16) geführt ist, das zwischen der Saugwalze (16) und dem permeablen strukturierten Band (22) liegt und durch das hindurch die heiße Zuluft in den Saugkasten (18) der Saugwalze (16) strömt.Device according to claim 26 or 27,
characterized,
in that a dewatering belt (36) is additionally guided around the suction roll (16) which lies between the suction roll (16) and the permeable structured strip (22) and through which the hot supply air enters the suction box (18) of the suction roll (16). flows. Vorrichtung nach einem der Ansprüche 25 bis 28,
dadurch gekennzeichnet,
dass die der Zuluftkammer (20) zugeführte Zuluft teilweise einer Haube (18) entnommen ist, die einem Trockenzylinder (40), insbesondere Yankee-Zylinder zugeordnet ist, der zusammen mit einem Presselement (42) einen Pressspalt (44) bildet, durch den die Faserstoffbahn (12) im Anschluss an die Saugwalze (16) hindurchgeführt ist.Device according to one of claims 25 to 28,
characterized,
that supplied to the supply air chamber (20) supply air is removed in part of a hood (18) a drying cylinder (40), in particular a Yankee cylinder is associated, together with a pressing member (42) forms a press nip (44) through which the Fiber web (12) is passed after the suction roll (16). Vorrichtung nach Anspruch 29,
dadurch gekennzeichnet,
dass die der dem Trockenzylinder (40) zugeordneten Haube (46) entnommene Heißluft als Ergänzungsluft einem druckseitigen Stutzen und/oder einem saugseitigen Stutzen der Druckerhöhungseinrichtung (56) zugeführt ist.Device according to claim 29,
characterized,
in that the hot air removed from the hood (46) assigned to the drying cylinder (40) is supplied as supplementary air to a pressure-side nozzle and / or a suction-side nozzle of the pressure-increasing device (56). Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass wenigstens ein Wasserabscheider (64) in einer mit der Abluftkammer (18) verbundenen Abluft-Abführleitung (66), in einem saugseitigen Stutzen der Druckerhöhungseinrichtung (56) und/oder in einem druckseitigen Stutzen der Druckerhöhungseinrichtung (56) vorgesehen ist.Device according to one of the preceding claims,
characterized,
in that at least one water separator (64) is provided in an exhaust air discharge line (66) connected to the exhaust air chamber (18), in a suction side port of the pressure increasing device (56) and / or in a pressure side port of the pressure increasing device (56). Vorrichtung nach Anspruch 31,
dadurch gekennzeichnet,
dass der Wasserabscheider (64) in Strömungsrichtung der rückgeführten Abluft betrachtet vor der der Erhöhung der Zulufttemperatur dienenden Heizeinrichtung (62) und/oder vor der Stelle vorgesehen ist, an der die der Haube (46) des Trockenzylinders (40) entnommene Heißluft zugeführt wird.Device according to claim 31,
characterized,
that the water separator (64) viewed in the flow direction of the recirculated air prior to serving the increase of the supply air heating means (62) and / or is provided in front of the position at which the hood (46) of the drying cylinder extracted (40) hot air is supplied. Maschine (10) zur Herstellung einer mit einer dreidimensionalen Oberflächenstruktur versehenen Faserstoffbahn (12), insbesondere Papier-, Karton- oder Tissuebahn, mit einer Trocknungsvorrichtung (14) nach einem der vorhergehenden Ansprüche, wobei die Abluftkammer durch den Saugkasten (18) einer Saugwalze (16) und die Zuluftkammer durch eine dieser Saugwalze (16) zugeordnete Haube (20) gebildet und die Faserstoffbahn (12) zusammen mit einem permeablen strukturierten Band (22) über die Saugwalze (16) geführt ist, und wobei die Faserstoffbahn (12) zwischen dem permeablen strukturierten Band (22) und der Saugwalze (16) liegt und die heiße Zuluft aus der Haube (20) nacheinander durch das permeable strukturierte Band (22) und die Faserstoffbahn (12) hindurch in den Saugkasten (18) der Saugwalze (16) strömt.Machine (10) for producing a fibrous web (12), in particular a paper, cardboard or tissue web provided with a three-dimensional surface structure, with a drying device (14) according to one of the preceding claims, wherein the exhaust air chamber through the suction box (18) of a suction roll ( 16) and the supply air chamber formed by a suction roll (16) associated hood (20) and the fibrous web (12) together with a permeable structured band (22) on the suction roll (16) is guided, and wherein the fibrous web (12) between the permeable structured band (22) and the suction roll (16) and the hot supply air from the hood (20) successively through the permeable structured band (22) and the fibrous web (12) into the suction box (18) of the suction roll (16 ) flows. Maschine nach Anspruch 33,
dadurch gekennzeichnet,
dass das permeable strukturierte Band (22) und die Faserstoffbahn (12) über ein permeables Pressband (24) gegen die Saugwalze (16) gepresst werden und die heiße Zuluft aus der Haube (20) nacheinander durch das permeable Pressband (24), das permeable strukturierte Band (22) und die Faserstoffbahn hindurch in den Saugkasten (18) der Saugwalze (16) strömt.Machine according to claim 33,
characterized,
in that the permeable structured band (22) and the fibrous web (12) pressed against the suction roll (16) via a permeable press belt (24) and the hot supply air from the hood (20) successively through the permeable press belt (24), the permeable structured belt (22) and the fibrous web into the suction box (18 ) of the suction roll (16) flows. Maschine nach Anspruch 33 oder 34,
dadurch gekennzeichnet,
dass zusätzlich ein Entwässerungsband (36) um die Saugwalze (16) geführt ist, das zwischen der Saugwalze (16) und dem permeablen strukturierten Band (22) liegt und durch das hindurch die heiße Zuluft in den Saugkasten (18) der Saugwalze (16) strömt.Machine according to claim 33 or 34,
characterized,
in that a dewatering belt (36) is additionally guided around the suction roll (16) which lies between the suction roll (16) and the permeable structured strip (22) and through which the hot supply air enters the suction box (18) of the suction roll (16). flows.
EP08150640A 2007-02-13 2008-01-25 Machine for manufacturing a fibrous web with a device for drying the web by means of hot air Not-in-force EP1959053B1 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
DE102007006960A DE102007006960A1 (en) 2007-02-13 2007-02-13 Device for drying a fibrous web

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EP1959053B1 EP1959053B1 (en) 2010-12-22

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EP (1) EP1959053B1 (en)
AT (1) ATE492685T1 (en)
CA (1) CA2620781A1 (en)
DE (2) DE102007006960A1 (en)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000753A1 (en) 2009-02-11 2010-08-12 Voith Patent Gmbh Method and device for drying a fibrous web
RU2519930C2 (en) * 2007-11-20 2014-06-20 Олбани Интернешнл Корп. Structure-forming tape, press part and paper napkin making machine for production of web for thick crepe napkins and process to this end
EP2896743A1 (en) 2014-01-20 2015-07-22 Valmet S.p.A. A process and a machine for making a tissue paper web
US11118311B2 (en) * 2018-11-20 2021-09-14 Structured I, Llc Heat recovery from vacuum blowers on a paper machine

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007006960A1 (en) * 2007-02-13 2008-08-14 Voith Patent Gmbh Device for drying a fibrous web
WO2010091765A1 (en) 2009-02-11 2010-08-19 Sca Hygiene Products Ab Device and method for drying a tissue paper web using steam recapture
DE102009001872A1 (en) 2009-03-26 2010-09-30 Voith Patent Gmbh System for computer-aided optimization of the overall efficiency of a production plant
DE102011075678A1 (en) 2011-05-11 2012-11-15 Voith Patent Gmbh Method for computer-aided optimization of overall efficiency of production plant for producing web of material e.g. paper, involves generating energy consumption data of energy consumers as function of consumed and calculated energy
US8968517B2 (en) 2012-08-03 2015-03-03 First Quality Tissue, Llc Soft through air dried tissue
EP2775030B1 (en) 2013-03-06 2015-09-09 Valmet S.p.A. An arrangement for drying a tissue paper web and a method for recapturing steam during drying of a tissue paper web
MX2016014887A (en) 2014-05-16 2018-03-01 First Quality Tissue Llc Flushable wipe and method of forming the same.
US9988763B2 (en) 2014-11-12 2018-06-05 First Quality Tissue, Llc Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same
WO2016086019A1 (en) 2014-11-24 2016-06-02 First Quality Tissue, Llc Soft tissue produced using a structured fabric and energy efficient pressing
US9719213B2 (en) * 2014-12-05 2017-08-01 First Quality Tissue, Llc Towel with quality wet scrubbing properties at relatively low basis weight and an apparatus and method for producing same
US10099425B2 (en) 2014-12-05 2018-10-16 Structured I, Llc Manufacturing process for papermaking belts using 3D printing technology
FR3030705A1 (en) * 2014-12-17 2016-06-24 Andritz Perfojet Sas INSTALLATION FOR DRYING A WET NON-WOVEN NET
MX2018004621A (en) 2015-10-13 2019-08-12 First Quality Tissue Llc Disposable towel produced with large volume surface depressions.
US10538882B2 (en) 2015-10-13 2020-01-21 Structured I, Llc Disposable towel produced with large volume surface depressions
WO2017066656A1 (en) 2015-10-14 2017-04-20 First Quality Tissue, Llc Bundled product and system and method for forming the same
KR20180134855A (en) 2016-02-11 2018-12-19 스트럭?드 아이, 엘엘씨 Belts or fabrics comprising a polymer layer for a paper machine
WO2017151096A1 (en) * 2016-02-29 2017-09-08 Kimberly-Clark Worldwide, Inc. Through-air drying apparatus and methods of manufacture
US20170314206A1 (en) 2016-04-27 2017-11-02 First Quality Tissue, Llc Soft, low lint, through air dried tissue and method of forming the same
MX2019002123A (en) 2016-08-26 2019-08-16 Method of producing absorbent structures with high wet strength, absorbency, and softness.
WO2018049390A1 (en) 2016-09-12 2018-03-15 Structured I, Llc Former of water laid asset that utilizes a structured fabric as the outer wire
US11583489B2 (en) 2016-11-18 2023-02-21 First Quality Tissue, Llc Flushable wipe and method of forming the same
US10619309B2 (en) 2017-08-23 2020-04-14 Structured I, Llc Tissue product made using laser engraved structuring belt
CA3100373A1 (en) 2018-05-15 2019-11-21 Structured I, Llc Manufacturing process for papermaking endless belts using 3d printing technology
US10739072B2 (en) * 2018-05-31 2020-08-11 Valmet, Inc. Through air drying and bonding systems and methods for maintaining uniform supply air temperature
DE102018114748A1 (en) 2018-06-20 2019-12-24 Voith Patent Gmbh Laminated paper machine clothing
US11738927B2 (en) 2018-06-21 2023-08-29 First Quality Tissue, Llc Bundled product and system and method for forming the same
US11697538B2 (en) 2018-06-21 2023-07-11 First Quality Tissue, Llc Bundled product and system and method for forming the same
US11098453B2 (en) 2019-05-03 2021-08-24 First Quality Tissue, Llc Absorbent structures with high absorbency and low basis weight
CA3081992A1 (en) 2019-06-06 2020-12-06 Structured I, Llc Papermaking machine that utilizes only a structured fabric in the forming of paper
WO2022133257A1 (en) 2020-12-17 2022-06-23 First Quality Tissue, Llc Wet laid disposable absorent structures with high wet strenght and method of making the same
SE2230174A1 (en) * 2022-06-01 2023-12-02 Valmet Oy A machine for producing a fibrous web
US11952721B2 (en) 2022-06-16 2024-04-09 First Quality Tissue, Llc Wet laid disposable absorbent structures with high wet strength and method of making the same
US11976421B2 (en) 2022-06-16 2024-05-07 First Quality Tissue, Llc Wet laid disposable absorbent structures with high wet strength and method of making the same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447247A (en) * 1967-12-18 1969-06-03 Beloit Corp Method and equipment for drying web material
GB2122322A (en) * 1982-06-23 1984-01-11 Kimberly Clark Co Drying webs
US4615122A (en) * 1984-04-09 1986-10-07 Kimberly-Clark Corporation Method for providing steam and hot air for hooded drying cylinders
WO1996029467A1 (en) * 1995-03-20 1996-09-26 James River Method for dewatering a sheet of cellulose material using hot air caused to flow therethrough by means of a high vacuum, device therefor, and resulting material
CA2262397A1 (en) * 1998-02-24 1999-08-24 David R. Webster Method and apparatus for drying a moist web
WO2001000925A1 (en) * 1999-06-29 2001-01-04 Valmet-Karlstad Ab Apparatus and method for making textured tissue paper
WO2003000988A1 (en) * 2001-06-26 2003-01-03 Metso Paper, Inc. Impingement system in the drying section of a paper machine or the like
US20050132598A1 (en) * 2003-12-19 2005-06-23 Kimberly-Clark Worldwide, Inc. Method and system for heat recovery in a throughdrying tissue making process
US20050167061A1 (en) * 2004-01-30 2005-08-04 Scherb Thomas T. Paper machine dewatering system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432936A (en) * 1967-05-31 1969-03-18 Scott Paper Co Transpiration drying and embossing of wet paper webs
US4103434A (en) * 1972-05-30 1978-08-01 Richard Turner Walker Drying apparatus
AT363320B (en) * 1978-02-03 1981-07-27 Walli Papier Zellstoffwatte FLOW-DRYER FOR DRYING A FIBER FABRIC OR A PAPER SHEET
US4326342A (en) * 1980-08-07 1982-04-27 Midland-Ross Corporation Multi-zone oven with cool air modulation
SE470134B (en) * 1992-04-23 1993-11-15 Valmet Karlstad Ab Ways of converting a conventional tissue machine to a TAD machine, as well as a suitable "C-wrap" type double wire former
FI104000B1 (en) * 1998-04-03 1999-10-29 Valmet Corp Inflow system fitted around a roll, cylinder or the like in the drying section of a papermaking machine or the like
US6199296B1 (en) * 1999-12-16 2001-03-13 Valmet-Karlstad Ab Seal arrangement for through-air drying papermaking machine
US6752907B2 (en) * 2001-01-12 2004-06-22 Georgia-Pacific Corporation Wet crepe throughdry process for making absorbent sheet and novel fibrous product
US6904700B2 (en) * 2003-09-12 2005-06-14 Kimberly-Clark Worldwide, Inc. Apparatus for drying a tissue web
US7510631B2 (en) * 2004-10-26 2009-03-31 Voith Patent Gmbh Advanced dewatering system
DE102007006960A1 (en) * 2007-02-13 2008-08-14 Voith Patent Gmbh Device for drying a fibrous web

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3447247A (en) * 1967-12-18 1969-06-03 Beloit Corp Method and equipment for drying web material
GB2122322A (en) * 1982-06-23 1984-01-11 Kimberly Clark Co Drying webs
US4615122A (en) * 1984-04-09 1986-10-07 Kimberly-Clark Corporation Method for providing steam and hot air for hooded drying cylinders
WO1996029467A1 (en) * 1995-03-20 1996-09-26 James River Method for dewatering a sheet of cellulose material using hot air caused to flow therethrough by means of a high vacuum, device therefor, and resulting material
CA2262397A1 (en) * 1998-02-24 1999-08-24 David R. Webster Method and apparatus for drying a moist web
WO2001000925A1 (en) * 1999-06-29 2001-01-04 Valmet-Karlstad Ab Apparatus and method for making textured tissue paper
WO2003000988A1 (en) * 2001-06-26 2003-01-03 Metso Paper, Inc. Impingement system in the drying section of a paper machine or the like
US20050132598A1 (en) * 2003-12-19 2005-06-23 Kimberly-Clark Worldwide, Inc. Method and system for heat recovery in a throughdrying tissue making process
US20050167061A1 (en) * 2004-01-30 2005-08-04 Scherb Thomas T. Paper machine dewatering system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2519930C2 (en) * 2007-11-20 2014-06-20 Олбани Интернешнл Корп. Structure-forming tape, press part and paper napkin making machine for production of web for thick crepe napkins and process to this end
DE102009000753A1 (en) 2009-02-11 2010-08-12 Voith Patent Gmbh Method and device for drying a fibrous web
WO2010091950A1 (en) 2009-02-11 2010-08-19 Voith Patent Gmbh Method and device for drying a fibrous web
CN102317540A (en) * 2009-02-11 2012-01-11 沃依特专利有限责任公司 Method and device for drying a fibrous web
CN102317540B (en) * 2009-02-11 2014-12-03 沃依特专利有限责任公司 Method and device for drying a fibrous web
US9328460B2 (en) 2009-02-11 2016-05-03 Voith Patent Gmbh Method and device for drying a fibrous web
EP2896743A1 (en) 2014-01-20 2015-07-22 Valmet S.p.A. A process and a machine for making a tissue paper web
WO2015107094A1 (en) 2014-01-20 2015-07-23 Valmet S.P.A. A process and a machine for making a tissue paper web
US11118311B2 (en) * 2018-11-20 2021-09-14 Structured I, Llc Heat recovery from vacuum blowers on a paper machine
US11891759B2 (en) 2018-11-20 2024-02-06 Structured I, Llc. Heat recovery from vacuum blowers on a paper machine

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CA2620781A1 (en) 2008-08-13
US8196314B2 (en) 2012-06-12
ES2355689T3 (en) 2011-03-30
DE502008002037D1 (en) 2011-02-03
EP1959053B1 (en) 2010-12-22
DE102007006960A1 (en) 2008-08-14
ATE492685T1 (en) 2011-01-15
US20080189981A1 (en) 2008-08-14
PL1959053T3 (en) 2011-05-31

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