FR2647127A1 - Process for extracting condensate in drying drums in the manufacture of paper, board and the like, and means for performing the process - Google Patents

Process for extracting condensate in drying drums in the manufacture of paper, board and the like, and means for performing the process Download PDF

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Publication number
FR2647127A1
FR2647127A1 FR8906824A FR8906824A FR2647127A1 FR 2647127 A1 FR2647127 A1 FR 2647127A1 FR 8906824 A FR8906824 A FR 8906824A FR 8906824 A FR8906824 A FR 8906824A FR 2647127 A1 FR2647127 A1 FR 2647127A1
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Prior art keywords
cylinder
condensate
internal
bearing
drying
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Granted
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FR8906824A
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French (fr)
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FR2647127B1 (en
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Priority to FR8906824A priority Critical patent/FR2647127B1/en
Priority to FR898915587A priority patent/FR2654755B2/en
Priority to ES199090908537T priority patent/ES2029974T3/en
Priority to US07/777,212 priority patent/US5271456A/en
Priority to BR909007388A priority patent/BR9007388A/en
Priority to KR1019910701652A priority patent/KR960011117B1/en
Priority to CA002053861A priority patent/CA2053861A1/en
Priority to DE1990908537 priority patent/DE473675T1/en
Priority to EP90908537A priority patent/EP0473675B1/en
Priority to DE90908537T priority patent/DE69001434T2/en
Priority to JP2508391A priority patent/JPH04505350A/en
Priority to PCT/FR1990/000355 priority patent/WO1990014468A1/en
Publication of FR2647127A1 publication Critical patent/FR2647127A1/en
Application granted granted Critical
Publication of FR2647127B1 publication Critical patent/FR2647127B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F5/02—Drying on cylinders
    • D21F5/10—Removing condensate from the interior of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The process for removing condensate in drying drums heated by continuous introduction of steam under pressure into their internal cavity 4 consists in propelling the condensate and atomising it in at least one orifice produced at at least one of the ends of the internal cylindrical sleeve 8, close to the corresponding bearing. The drying drum 4 for performing the process is equipped with means of extracting and atomising the condensate, located at at least one of the lateral ends of the internal cavity 4 of the drum, close to the corresponding bearing 2, and consisting of at least one orifice 9 produced between the internal cylindrical wall 8 and the wall 10 which forms the base of the internal cavity 4, the said orifice 9 being in communication with the exterior of the drum by a passage 5 produced in the centre of the bearing 2.

Description

La présente invention concerne les installations de fabrication du papier, carton ou autre ; elle concerne plus particulierement dans ces installations, l'élimination du condensat qui se forme a l'intérieur des cylindres sécheurs chauffés en continu par de la vapeur introduite sous pression dans leur cavité interne. The present invention relates to installations for manufacturing paper, cardboard or the like; it relates more particularly in these installations, the elimination of the condensate which forms inside the drying cylinders heated continuously by steam introduced under pressure into their internal cavity.

La présence de condensat diminue, dans les cylindres de façon connue, la transmission de chaleur entre la vapeur et l'enveloppe formant le cylindre et reduit par conséquent l'efficacité du séchage du papier ou carton. The presence of condensate decreases, in the cylinders in a known manner, the heat transmission between the vapor and the envelope forming the cylinder and consequently reduces the drying efficiency of the paper or cardboard.

Par ailleurs, lorsque le cylindre est arrêté, la présence de condensat à l'intérieur provoque des deformations du cylindre qui, au moment de la remise en marche, altèrent la qualite du séchage, par zone, ce qui, dans le cas de la fabrication du carton ondulé notamment, peut provoquer des défauts internes de collage des différentes couches. In addition, when the cylinder is stopped, the presence of condensate inside causes deformations of the cylinder which, at the time of restarting, affect the quality of the drying, by zone, which, in the case of manufacturing. corrugated board in particular, can cause internal defects in the bonding of the different layers.

I1 est connu de récupérer le condensat a l'intérieur du cylindre, au moyen d'une ecope fixe, introduite dans la cavité interne du cylindre par l'un des paliers, et maintenue a quelques millimètres de la paroi interne pour récupérer l'eau qui recouvre ladite paroi. Ce système tres simple présente toutefois l'inconvénient d'etre tres fragile et surtout d'etre tres difficile a mettre en place et a régler pour obtenir un bon rendement. It is known to recover the condensate inside the cylinder, by means of a fixed scoop, introduced into the internal cavity of the cylinder by one of the bearings, and maintained a few millimeters from the internal wall to recover the water. which covers said wall. This very simple system however has the drawback of being very fragile and above all of being very difficult to set up and adjust to obtain a good yield.

D'autres systemes ont été développés qui consistent en un aménagement interne de la paroi du cylindre, en réalisant des rainures dans lesquelles on trouve des tubes d'évacuation, par lesquels s'évacue le condensat sous l'effet de la pression interne qui regne dans la cavite du cylindre par la présence de la vapeur. Other systems have been developed which consist of an internal arrangement of the wall of the cylinder, by making grooves in which there are evacuation tubes, through which the condensate is evacuated under the effect of the internal pressure which prevails. in the cylinder cavity by the presence of steam.

Ce dernier systeme présente une complexité importante en raison du nombre de tubes collecteurs qu'il est nécessaire de positionner dans le cylindre, et l'efficacité de ce systeme dépend beaucoup du réglage du positionnement de ces tubes collecteurs dans les rainures. The latter system is of considerable complexity due to the number of collecting tubes which it is necessary to position in the cylinder, and the efficiency of this system depends very much on the adjustment of the positioning of these collecting tubes in the grooves.

La présente invention a pour but d'ameliorer de façon notable et en particulier de permettre l'evacuation totale du condensat contenu a l'intérieur du cylindre. Elle a aussi pour but de proposer un systeme beaucoup plus simple, ne nécessitant aucun réglage et ne présentant aucun risque de détérioration dans le temps. The present invention aims to improve significantly and in particular to allow the total evacuation of the condensate contained inside the cylinder. It also aims to offer a much simpler system, requiring no adjustment and presenting no risk of deterioration over time.

L'invention a tout d'abord pour objet un procédé d'élimination totale du condensat qui se forme a l'intérieur du cylindre. Ce procédé consiste a propulser le condensat, a I'extérieur de la cavité interne du cylindre, au moyen de la pression régnant dans ladite cavité, dans un orifice au moins, aménagé a l'une au moins des extrémités de l'enveloppe cylindrique interne de la cavité, pres du palier correspondant. The invention firstly relates to a process for the total elimination of the condensate which forms inside the cylinder. This process consists in propelling the condensate, outside the internal cavity of the cylinder, by means of the pressure prevailing in said cavity, in at least one orifice, arranged at at least one of the ends of the internal cylindrical envelope. of the cavity, near the corresponding bearing.

Selon une disposition préférentielle de l'invention, le procédé consiste a réaliser, au niveau de l'orifice d'évacuation, une atomisation du condensat pour faciliter son éjection au niveau de l'axe du cylindre, a travers le palier correspondant. According to a preferred arrangement of the invention, the method consists in carrying out, at the discharge orifice, atomization of the condensate to facilitate its ejection at the level of the axis of the cylinder, through the corresponding bearing.

L'invention concerne également le cylindre sécheur permettant la mise en oeuvre du procédé d'évacuation du condensat. Ce cylindre comporte des moyens d'extraction et d'atomisation du condensat, en forme d'orifice aménagé entre la paroi cylindrique interne et le fond de la cavité du cylindre, lequel orifice est en communication avec l'extérieur du cylindre. The invention also relates to the drying cylinder allowing the implementation of the condensate removal process. This cylinder comprises means for extracting and atomizing the condensate, in the form of an orifice arranged between the internal cylindrical wall and the bottom of the cylinder cavity, which orifice is in communication with the outside of the cylinder.

Selon une disposition préférentielle de l'invention, le fond de la cavité interne du cylindre est délimité par au moins un obturateur en forme de disque, centré sur l'axe du cylindre, lequel obturateur a un diametre extérieur tel qu'une ouverture circulaire persiste entre * paroi interne du cylindre et la périphérie de l'obturateur. According to a preferred arrangement of the invention, the bottom of the internal cavity of the cylinder is delimited by at least one disc-shaped shutter, centered on the axis of the cylinder, which shutter has an outside diameter such that a circular opening persists. between * inner wall of the cylinder and the periphery of the shutter.

Toujours selon l'invention, le cylindre comporte, derriere l'obturateur, une chambre conique reliée a l'extérieur, pour l'évacuation du condensat atomisé. Still according to the invention, the cylinder comprises, behind the shutter, a conical chamber connected to the outside, for the evacuation of the atomized condensate.

Selon une autre disposition préférentielle de l'invention, l'enveloppe cylindrique interne du cylindre comporte, en vis a vis du disque, une rainure cylindrique dont le diametre est supérieur a celui de l'enveloppe interne et du disque. According to another preferred arrangement of the invention, the internal cylindrical casing of the cylinder comprises, opposite the disc, a cylindrical groove whose diameter is greater than that of the internal casing and the disc.

Toujours selon l'invention, le cylindre sécheur peut comporter deux disques disposés chacun a l'une des extrémités de la cavité interne, l'un de ces disques étant solidaire du tube central d'amenée de la vapeur a l'intérieur du cylindre. Still according to the invention, the drying cylinder may comprise two disks each disposed at one of the ends of the internal cavity, one of these disks being integral with the central tube for supplying steam inside the cylinder.

L'invention sera encore illustrée a l'aide de la description suivante d'un mode de réalisation et des dessins annexés donnés a titre indicatif et dans lesquels - la figure 1 représente un cylindre sécheur selon l'invention, en coupe longitudinale - la figure 2 représente un détail de ce cylindre sécheur et en particulier de l'orifice de passage du condensat a l'extremite interne du cylindre. The invention will be further illustrated with the aid of the following description of an embodiment and of the appended drawings given by way of indication and in which - FIG. 1 represents a drying cylinder according to the invention, in longitudinal section - FIG. 2 shows a detail of this drying cylinder and in particular of the orifice for the passage of the condensate at the internal end of the cylinder.

Le cylindre représenté figure 1, comporte une enveloppe cylindrique 1 qui peut s'etendre sur une longueur de 1,5 a 9 metres et plus selon l'installation. A chacune de ses extremités, l'enveloppe comporte un palier 2 fixé par tout moyen approprié a l'enveloppe ; le palier 2d est creux et il comporte, en son centre, un tube 3 d'amenee de vapeur sous pression dans la cavité interne 4 du cylindre. L'espace ou conduit 5 qui subsiste entre le tube 3 d'amenee de vapeur et la paroi cylindrique interne 6 du palier permet la mise en communication de la cavité interne 4 du cylindre avec l'extérieur de ce cylindre, ou l'on récupère le mélange de condensat et de vapeur qui proviennent de ladite cavité 4. The cylinder shown in Figure 1 has a cylindrical casing 1 which can extend over a length of 1.5 to 9 meters and more depending on the installation. At each of its ends, the envelope comprises a bearing 2 fixed by any means appropriate to the envelope; the bearing 2d is hollow and it comprises, in its center, a tube 3 for supplying pressurized steam into the internal cavity 4 of the cylinder. The space or conduit 5 which remains between the tube 3 for supplying steam and the internal cylindrical wall 6 of the bearing allows the internal cavity 4 of the cylinder to be placed in communication with the outside of this cylinder, where it is recovered the mixture of condensate and steam which come from said cavity 4.

Le condensat qui se forme a l'intérieur de la cavite 4, s'echappe au niveau de l'extremite 7 de l'enveloppe cylindrique interne 8 du cylindre, par un orifice 9 qui subsiste entre ladite enveloppe interne cylindrique et une paroi d'extremite 10 qui est fixée, par des moyens appropriés, du genre vis 11, sur la face interne 12 du palier 2d, tout en étant maintenu a distance de ce palier pour laisser subsister un passage pour le condensat. The condensate which forms inside the cavity 4 escapes at the end 7 of the internal cylindrical envelope 8 of the cylinder, through an orifice 9 which remains between said internal cylindrical envelope and a wall of end 10 which is fixed, by appropriate means, of the screw 11 type, on the internal face 12 of the bearing 2d, while being kept at a distance from this bearing to allow a passage for the condensate to remain.

Cette paroi interne 10, obture latéralement la cavité 4 du cylindre. Elle se présente sous la forme d'un disque dont le diametre est sensiblement inférieur au diametre de la paroi cylindrique interne 8. Ce disque 10 est maintenu a distance de la paroi interne 12 du palier 2d et il permet le passage du condensat sur toute sa périphérie, lequel condensat s'échappe par le conduit 5 dans le palier 2d.  This internal wall 10 laterally closes the cavity 4 of the cylinder. It is in the form of a disc, the diameter of which is substantially less than the diameter of the internal cylindrical wall 8. This disc 10 is kept at a distance from the internal wall 12 of the bearing 2d and it allows the passage of condensate over its entire periphery, which condensate escapes through the conduit 5 in the bearing 2d.

Le tube 3 d'amenée de la vapeur sous pression, traverse la paroi 10d pour amener cette vapeur dans la cavité interne 4 du cylindre, et il est fixé à cette paroi qui constitue le disque. Entre la paroi 10 et l'exterieur, on trouve tout d'abord une chambre conique puis le conduit 5 d'évacuation du condensat. On remarque, derriere la paroi 10, du coté du palier 2d, une forme tronconique 13 qui épouse une forme similaire sur le palier 2d, formant ainsi une chambre dans laquelle le condensat parvient a s'échapper. The tube 3 for supplying steam under pressure passes through the wall 10d to bring this vapor into the internal cavity 4 of the cylinder, and it is fixed to this wall which constitutes the disc. Between the wall 10 and the exterior, there is firstly a conical chamber then the conduit 5 for discharging the condensate. Note, behind the wall 10, on the side of the bearing 2d, a frustoconical shape 13 which matches a similar shape on the bearing 2d, thus forming a chamber in which the condensate manages to escape.

L'espace entre la paroi 10 et la paroi interne cylindrique 8, ainsi que la distance séparant les deux troncs de cones 13 et 14 permet une atomisation du condensat sous l'effet de la pression régnant à l'intérieur de la cavité 4, laquelle pression propulse le condensat vers l'extérieur du cylindre. Cette atomisation favorise ltévacuation du condensat par le centre du cylindre et en particulier par le conduit central 5. The space between the wall 10 and the internal cylindrical wall 8, as well as the distance separating the two trunks of cones 13 and 14 allows atomization of the condensate under the effect of the pressure prevailing inside the cavity 4, which pressure propels the condensate out of the cylinder. This atomization promotes the evacuation of the condensate through the center of the cylinder and in particular through the central duct 5.

On remarque, toujours figure'l, que la partie gauche du cylindre comporte un palier 2g muni d'un conduit central 5g à l'extrémité duquel on trouve également une paroi 10 délimitant l'extremite latérale de la cavite 4 interne du cylindre. Cette paroi est egalement munie d'une forme 13 en tronc de cône avec une forme correspondante 14 aménagée dans le palier 2q. Compte-tenu de la longueur des cylindres en question, ltévacuation du condensat peut s'effectuer a chacune des extrémités par l'ouverture péripherique 9 amenagee entre la paroi 10 en forme de disque et la paroi cylindrique interne 8 du cylindre. Note, still figure'l, that the left part of the cylinder has a bearing 2g provided with a central duct 5g at the end of which there is also a wall 10 delimiting the lateral end of the internal cavity 4 of the cylinder. This wall is also provided with a shape 13 in a truncated cone with a corresponding shape 14 arranged in the bearing 2q. Given the length of the cylinders in question, the evacuation of the condensate can be carried out at each end by the peripheral opening 9 arranged between the wall 10 in the form of a disc and the internal cylindrical wall 8 of the cylinder.

On a représenté figure 2, à une plus grande échelle, un aménagement particulier de l'ouverture 9. La paroi cylindrique interne 8 du cylindre comporte, a son extremite, vers le palier 2, un alésage 15 de diamètre plus important mais inférieur à celui de la paroi circulaire 10. Cet alesage 15 forme une paroi cylindrique 16 délimitée par une embase annulaire 17 à l'extrémité de l'enveloppe 8 et l'extremite 18 du palier 2. La paroi 10 se positionne sensiblement à egale distance de l'embase annulaire 17 et de la paroi 18. There is shown in Figure 2, on a larger scale, a particular arrangement of the opening 9. The inner cylindrical wall 8 of the cylinder has, at its end, towards the bearing 2, a bore 15 of larger diameter but less than that of the circular wall 10. This bore 15 forms a cylindrical wall 16 delimited by an annular base 17 at the end of the casing 8 and the end 18 of the bearing 2. The wall 10 is positioned substantially at equal distance from the annular base 17 and wall 18.

Le rayon de la paroi circulaire lO correspond sensiblement au rayon de la paroi interne cylindrique 8 celui de la paroi cylindrique 16 fait environ 1,5 mm de plus, selon le type de rouleau. L'espace compris entre l'embase annulaire 17 et l'extrémité 18 du palier 2 est de l'ordre de 3 à 4 fois l'épaisseur de la paroi 10. On réalise ainsi une sorte de chicane pour le condensat qui stagne sur la paroi cylindrique interne 8. Ce condensat a tendance à remplir la cavité de l'alésage 15 et il est propulsé par la vapeur entre la paroi 10 et le palier 2, avec réalisation d'une atomisation pour présenter ce condensat sous la forme d'un brouillard, lequel brouillard est plus facile a évacuer au centre du palier 2, par le conduit 5. The radius of the circular wall 10 corresponds substantially to the radius of the cylindrical internal wall 8 that of the cylindrical wall 16 is approximately 1.5 mm more, depending on the type of roller. The space between the annular base 17 and the end 18 of the bearing 2 is of the order of 3 to 4 times the thickness of the wall 10. This produces a sort of baffle for the condensate which stagnates on the internal cylindrical wall 8. This condensate tends to fill the cavity of the bore 15 and it is propelled by steam between the wall 10 and the bearing 2, with atomization to present this condensate in the form of a fog, which fog is easier to evacuate in the center of the bearing 2, through the conduit 5.

On remarque encore, figure 2, la fixation du disque 10 sur le palier 2 au moyen de vis 11 et l'entretoise 19 qui assure un positionnement précis du disque 10 par rapport audit palier 2 et en particulier par rapport à sa face annulaire 18. Note also, in FIG. 2, the fixing of the disc 10 on the bearing 2 by means of screws 11 and the spacer 19 which ensures precise positioning of the disc 10 relative to said bearing 2 and in particular relative to its annular face 18.

Les signes de reférence insérés après les caractéristiques techniques mentionnées dans les revendications ont pour seul but de faciliter la compréhension de ces dernières et n'en limitent aucunement la portée.  The reference signs inserted after the technical characteristics mentioned in the claims have the sole purpose of facilitating the understanding of the latter and in no way limit their scope.

Claims (9)

- REVENDICATIONS- CLAIMS 1.- Procédé d'évacuation du condensat dans les cylindres sécheurs chauffés par introduction de vapeur en continu et sous pression de leur cavité interne (4), caractérisé en ce qu'il consiste à propulser le condensat dans au moins un orifice amenagé à l'une au moins des extrémités de l'enveloppe cylindrique interne (8), près du palier correspondant. 1.- Method for discharging the condensate in the heated drying cylinders by introducing steam continuously and under pressure from their internal cavity (4), characterized in that it consists in propelling the condensate in at least one orifice provided for the 'at least one of the ends of the internal cylindrical envelope (8), near the corresponding bearing. 2.- Procédé d'évacuation du condensat dans les cylindres sécheurs, selon la revendication 1, caractérisé en ce qu'il consiste à atomiser le condensat par passage dans un orifice aménagé à l'une au moins des extrémités de l'enveloppe cylindrique interne, en vue de son évacuation au niveau de l'axe du cylindre sécheur. 2.- A method of discharging the condensate in the drying cylinders, according to claim 1, characterized in that it consists in atomizing the condensate by passing through an orifice provided at at least one of the ends of the internal cylindrical envelope. , for its evacuation at the axis of the drying cylinder. 3.- Cylindre sécheur pour la mise en oeuvre du procédé d'évacuation du condensat selon l'une quelconque des revendications 1 ou 2, dans lequel la vapeur est introduite sous pression dans la cavité interne (4), lequel cylindre est muni de moyens d'extraction du condensat forme dans ladite cavité et de moyens d'évacuation de ce condensat par le ou les paliers du cylindre, caractérisé en ce qu'il comporte des moyens d'extraction du condensat, disposés à l'une au moins des extrémités latérales de la cavité interne (4) du cylindre, à proximité du palier (2) correspondant. 3. A drying cylinder for implementing the condensate removal method according to any one of claims 1 or 2, in which the steam is introduced under pressure into the internal cavity (4), which cylinder is provided with means. for extracting the condensate formed in said cavity and means for discharging this condensate by the cylinder bearing (s), characterized in that it comprises means for extracting the condensate, arranged at at least one of the ends side of the internal cavity (4) of the cylinder, near the corresponding bearing (2). 4.- Cylindre sécheur selon la revendication 3, caractérisé en ce qu'il comporte des moyens d'extraction et d'atomisation du condensat, disposés à l'une au moins des extrémités latérales de la cavité interne (4) du cylindre, à proximité dû palier (2) correspondant. 4. A drying cylinder according to claim 3, characterized in that it comprises means for extracting and atomizing the condensate, arranged at at least one of the lateral ends of the internal cavity (4) of the cylinder, at proximity to the corresponding bearing (2). 5.- Cylindre sécheur selon la revendication 4, caractérisé en ce que les moyens d'extraction et d'atomisation consistent en au moins un orifice (9) amenagé entre la paroi cylindrique interne (8) et la paroi (10) formant le fond de la cavité interne (4), lequel orifice (9) est en communication avec l'extérieur du cylindre par un conduit (5) aménagé au centre du palier (2). 5. A drying cylinder according to claim 4, characterized in that the extraction and atomization means consist of at least one orifice (9) arranged between the internal cylindrical wall (8) and the wall (10) forming the bottom. of the internal cavity (4), which orifice (9) is in communication with the outside of the cylinder by a conduit (5) arranged in the center of the bearing (2). 6.- Cylindre sécheur selon la revendication 5, caractérisé en ce qu'il comporte, pour delimiter le fond de la cavité interne (4), au moins un obturateur (10) centré sur l'axe du cylindre, lequel obturateur a un diamètre extérieur tel qu'une ouverture circulaire (9) persiste entre la paroi interne (8) du cylindre et la périphérie dudit obturateur (10).  6. A drying cylinder according to claim 5, characterized in that it comprises, to delimit the bottom of the internal cavity (4), at least one shutter (10) centered on the axis of the cylinder, which shutter has a diameter exterior such that a circular opening (9) persists between the internal wall (8) of the cylinder and the periphery of said shutter (10). 7.- Cylindre secheur selon la revendication 6, caractérisé en ce qu'il comporte un obturateur (10) en forme de disque circulaire fixé, par l'intermédiaire d'entretoise, sur le palier (2) du cylindre. 7. A dry cylinder according to claim 6, characterized in that it comprises a shutter (10) in the form of a circular disc fixed, by means of a spacer, on the bearing (2) of the cylinder. 8.- Cylindre sécheur selon la revendication 7, caractérisé en ce qu'il comporte, derrière le disque (10), une chambre conique d'évacuation du condensat sous forme atomisée, communiquant avec le conduit (5) aménagé dans le palier (2). 8. A drying cylinder according to claim 7, characterized in that it comprises, behind the disc (10), a conical chamber for discharging the condensate in atomized form, communicating with the conduit (5) arranged in the bearing (2 ). 9.- Cylindre sécheur selon l'une quelconque des revendications 7 ou 8, caractérisé en ce qu'il comporte, à l'extrémité de l'enveloppe cylindrique interne (8) une rainure cylindrique interne (15) centrée sur le disque (10) et dont le diamètre est supérieur à celui de l'enveloppe interne (8) du cylindre et du disque (10).  9. A drying cylinder according to any one of claims 7 or 8, characterized in that it comprises, at the end of the internal cylindrical envelope (8) an internal cylindrical groove (15) centered on the disc (10 ) and whose diameter is greater than that of the internal casing (8) of the cylinder and of the disc (10).
FR8906824A 1989-05-22 1989-05-22 PROCESS FOR THE EXTRACTION OF CONDENSATE IN DRYING CYLINDERS FOR THE MANUFACTURE OF PAPER, CARDBOARD ETC. AND MEANS FOR IMPLEMENTING THE PROCESS Expired - Lifetime FR2647127B1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
FR8906824A FR2647127B1 (en) 1989-05-22 1989-05-22 PROCESS FOR THE EXTRACTION OF CONDENSATE IN DRYING CYLINDERS FOR THE MANUFACTURE OF PAPER, CARDBOARD ETC. AND MEANS FOR IMPLEMENTING THE PROCESS
FR898915587A FR2654755B2 (en) 1989-05-22 1989-11-21 IMPROVEMENT TO DRYER CYLINDERS IN PAPERMAKING FACILITIES.
DE90908537T DE69001434T2 (en) 1989-05-22 1990-05-21 IMPROVEMENT OF DRY CYLINDERS FOR PAPER AND CARDBOARD PRODUCTION PLANTS.
BR909007388A BR9007388A (en) 1989-05-22 1990-05-21 DEVICE FOR THE EXTRACTION OF STEAM CONDENSATES FROM DRYING CYLINDERS OF PAPER OR PAPER MANUFACTURING INSTALLATIONS
KR1019910701652A KR960011117B1 (en) 1989-05-22 1990-05-21 Improvement of drying cylinders in cardboard and paper-manufacturing plants
CA002053861A CA2053861A1 (en) 1989-05-22 1990-05-21 Improvement of drying cylinders in cardboard- and paper- manufacturing plants
ES199090908537T ES2029974T3 (en) 1989-05-22 1990-05-21 IMPROVEMENTS IN DRYING CYLINDERS IN CARDBOARD AND PAPER MANUFACTURING FACILITIES.
EP90908537A EP0473675B1 (en) 1989-05-22 1990-05-21 Improvement of drying cylinders in cardboard- and paper- manufacturing plants
US07/777,212 US5271456A (en) 1989-05-22 1990-05-21 Drying cylinders in plant for manufacturing cardboard, paper
JP2508391A JPH04505350A (en) 1989-05-22 1990-05-21 Improvement of drying cylinders in cardboard and paper manufacturing equipment
PCT/FR1990/000355 WO1990014468A1 (en) 1989-05-22 1990-05-21 Improvement of drying cylinders in cardboard- and paper- manufacturing plants
DE1990908537 DE473675T1 (en) 1989-05-22 1990-05-21 IMPROVEMENT OF DRY CYLINDERS FOR PAPER AND CARDBOARD PRODUCTION PLANTS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8906824A FR2647127B1 (en) 1989-05-22 1989-05-22 PROCESS FOR THE EXTRACTION OF CONDENSATE IN DRYING CYLINDERS FOR THE MANUFACTURE OF PAPER, CARDBOARD ETC. AND MEANS FOR IMPLEMENTING THE PROCESS

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FR2647127A1 true FR2647127A1 (en) 1990-11-23
FR2647127B1 FR2647127B1 (en) 1991-08-30

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575249A (en) * 1923-12-15 1926-03-02 Beloit Iron Works Apparatus for removing condensate from revolving driers
US3449839A (en) * 1967-12-21 1969-06-17 Beloit Corp Rotary steam joint and condensate scavenger therefor
DE3143347A1 (en) * 1981-10-31 1983-05-11 J.M. Voith Gmbh, 7920 Heidenheim Drying cylinder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575249A (en) * 1923-12-15 1926-03-02 Beloit Iron Works Apparatus for removing condensate from revolving driers
US3449839A (en) * 1967-12-21 1969-06-17 Beloit Corp Rotary steam joint and condensate scavenger therefor
DE3143347A1 (en) * 1981-10-31 1983-05-11 J.M. Voith Gmbh, 7920 Heidenheim Drying cylinder

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