EP0722009B1 - Installation d'humidification à vapeur - Google Patents

Installation d'humidification à vapeur Download PDF

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Publication number
EP0722009B1
EP0722009B1 EP95118995A EP95118995A EP0722009B1 EP 0722009 B1 EP0722009 B1 EP 0722009B1 EP 95118995 A EP95118995 A EP 95118995A EP 95118995 A EP95118995 A EP 95118995A EP 0722009 B1 EP0722009 B1 EP 0722009B1
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EP
European Patent Office
Prior art keywords
steam
housing
distribution duct
duct
moistener
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95118995A
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German (de)
English (en)
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EP0722009A2 (fr
EP0722009A3 (fr
Inventor
Stefan Winheim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VIB Apparatebau GmbH
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VIB Apparatebau GmbH
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Filing date
Publication date
Application filed by VIB Apparatebau GmbH filed Critical VIB Apparatebau GmbH
Publication of EP0722009A2 publication Critical patent/EP0722009A2/fr
Publication of EP0722009A3 publication Critical patent/EP0722009A3/fr
Application granted granted Critical
Publication of EP0722009B1 publication Critical patent/EP0722009B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to a steam humidification device with a housing that has a steam connection and in which a steam blowing chamber is arranged, which is common to the housing, with steam vents provided outer wall and in the inside of which is a distribution duct that can be filled with steam is arranged.
  • Such a steam humidifier is from WO-A-91/14045 known. This steam humidifier is divided into zones. Each zone is with a valve provided to cross-direction steam supply to control.
  • WO-A-87/04740 shows another steam humidifier with a housing that has a steam connection has, and arranged in a steam blowing chamber is common to the housing, with steam vents provided outer wall and in the inside of which is a distribution duct that can be filled with steam is arranged.
  • the steam chamber is in the cross machine direction divided into sections, of which each section has a valve to supply steam from the distribution channel into the respective section to control the steam chamber.
  • US-A-4 398 355 shows a steam distribution device a steam feed pipe inside another Pipe is arranged. From the further pipe the Steam through openings on the one hand into a smaller one Steam blowing space enter, which is on the inlet side of the Device is arranged. The steam comes from there through openings on a passing material web. On the other hand, the steam can be fed into a second steam blowing chamber from where he also entered the material web can reach. At least for the second Steam blowing chamber, the steam is deflected several times to an even pressure over the length of the device to reach.
  • Such steam humidifiers are used to to apply steam to passing material webs, to increase their humidity and temperature.
  • a widespread application is here Manufacture or processing of paper webs in which such steam humidifiers in connection used with calenders or other roller arrangements become.
  • the paper web is here before going through steam applied to a nip in order to to improve the gloss or smoothness, the bulk or change the density or increase the humidity.
  • a known steam humidifier (DE 43 09 076 A1), which is designed as a steam spray tube is, has a steam chamber that is across the width (seen in the direction of a passing material web), in the transverse direction, in several sections or zones. Each zone has a valve on, through the steam from inside the case the steam chamber of each zone can flow. Between the valve and the steam chamber is an acceleration channel arranged from which a predetermined Route a supply channel to before its end Steam blowing chamber branches.
  • Another known steam humidifier (DE 41 25 062 A1), which is designed as a steam blow box has a steam blowing chamber, which is also in Transverse direction is divided into zones, with each zone a separate valve for the admission of steam into the steam blowing chamber having.
  • the one entering the steam chamber Steam was previously used to heat at least one Wall of the steam chamber used.
  • the steam was before dried in a steam drying section.
  • Such steam humidifiers have the Advantage that they cross the amount of steam emitted Machine direction at least in different zones can adjust.
  • the disadvantage here is that the many valves the humidification device consuming and make it expensive. If for the application a single moistening device on one side of the material web not enough, for example because it is on the limit of their capacity is operated in many cases two or more humidifiers are used. In this case it is no longer necessary all humidifiers with separate controllable Equip zones. Rather, it is sufficient here the one emitted by the steam humidifier To be able to change the total amount of steam. The equalization in the cross-machine direction, i.e. across the passing material web can then with a single, zone-controlled steam humidifier can be achieved.
  • the invention has for its object a steam humidifier to specify that without zones Control can be operated reliably.
  • This task is accomplished with a steam humidifier of the type mentioned in that the Distribution channel is constantly surrounded by steam on all sides without zone valves with the steam blowing chamber over several, Supply lines distributed over the length of the housing communicates.
  • the distribution channel is essentially parallel arranged to the steam blowing chamber.
  • the distribution channel is constantly heated, so even during business interruptions. After downtimes, including the steam humidifier is first turned off Heating phase required in the distribution channel is constantly surrounded by steam before the web of material supplied with steam by the steam humidifier becomes.
  • the steam across the width of the humidifier can be delivered relatively evenly.
  • the distribution channel ensures that the steam first of all across the width, i.e. in the cross machine direction, is distributed before it is fed to the steam blowing chamber becomes.
  • Each section of the width is therefore given the same Amount of steam under the same pressure.
  • zone valves In contrast to zone-controlled steam blow boxes, with a valve attached to each zone that controls the supply of steam to the zone, Such zone valves are missing in the present case Steam moistener. Rather are only One or two valves are provided that control the steam supply control the humidifier overall. This Accordingly, valves can no longer pass through the zones be immediately adjacent. In the event of a business interruption, such as when replacing a roller in a calender, changing a web roll or occur in other cases can, is the necessary heat input to the Steam humidifier normally no longer guaranteed. This leads when restarting after the Interruption to the steam being in and of itself was initially intended for the vapor deposition of the material web condensed in the humidifier. The Drainage of the condensate is in and of itself not Problem.
  • the cross section of the distribution channel is larger than the sum of the cross sections of all supply lines.
  • each supply line with an axis opens into the steam chamber, which essentially perpendicular to one of the supply lines opposite baffle.
  • additional security is achieved. Water droplets, despite all that have been hit so far Measures have made their way into the steam chamber, are first entering the baffle Steam jet reflected back where it is with great Probability to be evaporated. It also has this configuration has significant advantages in reducing of the noise level that occurs when the material web is steamed created by the escaping steam.
  • the baffle in essentially at a right angle to the outer wall runs. With that, water droplets would need another Perform change of direction before going through the Steam outlet openings could escape. For this However, changing the direction takes a certain amount of time, which leads to an increased residence time of the water droplets leads in the steam blowing chamber. During this time are the water droplets with a very high probability evaporated. It must be emphasized that through the heated distribution channel the risk that Water droplets get into the steam chamber at all can have already been drastically reduced is. The additional measures listed here are basically only intended for rare exceptional cases.
  • the supply lines preferably protrude with a predetermined length into the interior of the distribution channel. Steam can therefore only come from inside the distribution channel removed, but not from its wall areas. Water droplets will change due to their mass but mostly on those below in gravity Knock down walls of the distribution channel so that it it can be assumed that inside the distribution channel, that is at a distance from its walls, an essentially anhydrous There is steam. You can also use this embodiment also a downward vaporization carry out. In this case, the supply lines occur namely down from the distribution channel. Through the protruding end of the supply lines But can water that is in the distribution channel at the Floor, i.e. the one below in the direction of gravity Wall, collects, do not enter the supply line.
  • the supply lines preferably point between Distribution channel and steam chamber on an arc extends over approximately 90 °. Since also the supply lines taken inside the case and by Steam is surrounded by this measure a small extension of the route in which the steam is led through a heated environment. Moreover can be the desired direction of the Steam when entering the steam chamber on simple Generate wise. In addition, when flowing through of the bow the possibly remaining Water by centrifugal force against the heated arch wall flung and then evaporated. By the way results the beneficial effect of noise reduction.
  • the supply lines preferably lead into the substantially equal distances into the steam chamber. With this simple measure, it becomes a relatively even one Feeding the steam chamber with the result a uniform vapor deposition in the cross machine direction reached.
  • the distance between the end of the steam chamber and the mouth of the next supply line into the steam chamber is half the distance between neighboring ones Mouths of supply lines. If you look at the Steam chamber thinks divided into zones, then opens each supply line approximately in the middle of such a line Zone. In this way, a uniform Ensure the distribution of the steam in a simple way.
  • the distribution channel preferably has a steam supply on, with the distance of each supply line from the steam supply a maximum of half the length of the distribution channel is. This measure also contributes to one Uniformization of the steam distribution in the steam blowing chamber at. The distance the steam has to travel is kept as short as this with simple measures is possible.
  • the Housing a heating steam connection and the distribution channel a separate process steam connection.
  • the Heating steam connection can be permanently under steam be placed, creating the inside of the case with hot steam is filled. This steam is then used for Heating the distribution channel and also for heating the Steam blowing chamber, which is also arranged inside the housing can be.
  • the temperature of the steam drops is relatively simple about the pressure at the heating steam connection Taxes.
  • the fed into the distribution channel The amount of steam can be controlled via the process steam connection, which is provided with a valve for this. This Valve no longer has to be in the immediate vicinity of the humidifier be arranged, which in particular in confined spaces such as in web pockets when deflecting between nips, very much can be advantageous.
  • the process steam is then immediately after its arrival in the Heated housing in the input channel. This carries to further alleviate the problems that with water droplets entrained in the steam can. You just have to make sure that the capacity of the input channel of the amount of the expected Water is adapted.
  • the input channel is designed as a steam drying section. Steam drying can, for example, thereby caused that the cross section of the input channel enlarged compared to the process steam connection.
  • the flow velocity of the entering Steam reduced and water mixed with the Steam entering the inlet channel can become relative knock down easily on the floor of the entrance channel and stop.
  • the effect can be improved in a preferred one Design but also in that the input channel at least one change of direction in the flow path of the Steam causes.
  • a change of direction will Participated in the steam relatively easily.
  • the water droplets which due to their mass have greater inertia have, but will face such a change of direction initially oppose, i.e. the water droplets have a tendency to keep going straight. For example, if you move in this direction provides a wall, the water droplets from this Caught on the wall and can then flow down. In this way, water droplets become mechanical removed from the steam.
  • the connecting channel essentially perpendicular to the input channel and a predetermined one Branch branches before the end.
  • the change of direction, which is enforced by the connecting channel is an obstacle to water droplets. Due to the sluggishness, they fly straight ahead further. Because the input channel is still a small one The route continues beyond the junction of the connecting channel, the water droplets can change their direction of movement also maintained. Then you end up gathering of the entrance channel in a kind of sack and can be there be dissipated.
  • the distribution channel has at least one input valve has, the steam-carrying parts inside the Housing are arranged, steam through the inlet valve from the inside of the housing into the distribution channel arrives.
  • the process steam ie the one used for the treatment of the material web Steam, taken from the heating steam.
  • the distribution channel is permanently heated by the steam.
  • the steam can always flow even when production is interrupted queue up to the steam humidifier. The danger that the steam is in a supply line cools down and condenses out is much less.
  • the inlet valve at least with its steam-carrying parts arranged inside the housing is ensured that these parts also be permanently heated, so that not here There is a risk that the steam will cool down and condense.
  • one input valve each in the area of each end of the distribution channel is arranged. In the area of the ends it says in some More space available than in the middle of the cases Steam moistener. By having two Input valves used, can be a relative achieve even steam distribution.
  • a steam humidification device 1 has a housing 2 with an interior 3.
  • a housing wall 4 is U-shaped molded into the interior 3. This housing wall 4 forms, together with a diffuser sheet 5 Vapor blowing chamber 6.
  • the diffuser sheet 5 has a large number of steam outlet openings 7.
  • the steam blow chamber 6 is connected to a large number of supply lines 8 connected to a distribution channel 9.
  • the baffle 12 is in turn under a right Angle to diffuser sheet 5.
  • the supply line 8 protrudes with a certain length 13 into the interior of the distribution channel 9. Steam can So only from the inside of the distribution channel 9 in the Supply line 8 arrive. Water that may be precipitates on the walls of the distribution channel 9, is from the entry into the supply line 8 held.
  • the input channel 15 has a process steam connection 16 on, over the steam that is applied a material web, not shown, can be used should be fed to the input channel 15.
  • the input channel 15 is here as a steam drying section educated. Steam drying is done here by two Measures achieved. First, the cross section of the Input channel 15 much larger than the cross section of the process steam connection 16. This leads to the fact that the flow velocity of the steam in the inlet channel versus the flow rate of the Steam in the process steam connection 16 is reduced, so that possibly carried water can fall down.
  • partition walls 17 are in the input channel Openings 18 are provided which, as indicated by arrows 19 is indicated, the steam to change direction to force.
  • the steam can change direction accordingly join the arrows 19 relatively easily.
  • water has because of its larger size Indolence the desire to fly straight on. It meets the walls 17 and flows in there Gravity direction downwards. In not shown Way, there is a drainage option for each wall be provided, for example in the form of a siphon. Instead, the draining water can all walls 17 are collected and removed in total.
  • the connecting channel 14 a certain Route before the end of the input channel 15 of this branches off, essentially at right angles.
  • the Input channel 15 therefore forms a kind at its end Sack 20, trapped in the remaining water droplets can be.
  • the housing 2 has a heating steam connection 21, through which the interior 3 of the housing 2 under steam can be set. Depending on the pressure on Heating steam connection 21 and thus the pressure of the steam in the interior 3 of the housing 2 will be in the interior 3 set an appropriate temperature.
  • the one in Interior 3 of the housing 2 steam is heated thus both the input channel 15 and the distribution channel 19.
  • the supply lines 8 and three walls of the steam blowing chamber 6 by the heating steam heated so even if water drops through the process steam connection 16 in the input channel 15, the Connection channel 14, the distribution channel 9, the supply lines 8 or the steam blowing chamber 6, they are very likely to evaporate. The chance that there is still water in the steam takes with increasing path towards the Steam blowing chamber 6. So the probability that there is still water in the steam, in the steam chamber practically zero.
  • the distribution channel 9 has a cross section that is larger is the sum of the cross sections of all supply lines 8. Therefore, a relative becomes in the distribution channel 9 Build up uniform vapor pressure, which is no longer depends on the distance from the connecting channel 14. Such dependency also becomes extensive mitigates that the maximum distance a Supply line 8 from the connecting channel 14 half the length of the distribution channel is 9. The route that the steam from the connecting channel 14 to the most distant This must cover supply line 8 kept as short as possible.
  • a large number of drainage openings are shown schematically 22, but related to Steam blow boxes are known. For example, you can connected to a siphon or a corresponding valve to be able to drain water without loss of pressure to let.
  • Such a steam humidification device 1 can also be used operated a remote valve, not shown the steam release by the steam humidifier 1 controls in total. If this valve is closed, for example in the event of a production interruption, becomes the line between this not shown valve and the steam humidifier 1 cool down. The steam it contains can condense. When restarting the steam humidifier 1 then becomes the corresponding amount Water, for example 0.5 or 1 l, in the input channel 15 arrive. Since this as a steam drying section trained, the water is already there essentially removed, partially by mechanical measures, such as the partition walls 17th and the sack 20 and partly by heating. Further remaining water can then in the distribution channel 9, which is fully heated evaporate.
  • the steam humidifier 101 is now like this arranged that the vaporization in the direction of gravity done down. Accordingly, the diffuser sheet is 105, the outer wall of the housing 102 in this Area forms, arranged below in the direction of gravity.
  • the supply line 108 occurs accordingly also downwards from the distribution channel 109. Self when water accumulates in the distribution channel 109 should, this water due to the in the distribution channel 109 protruding end 113 of the supply line 108 do not flow into the steam blowing chamber 106.
  • the distribution channel 109 does not have a separate process steam connection more on. Rather, it is only intended still a single steam connection 121, the interior 103 of the housing 102 charged with steam.
  • valves for supplying the distribution channel 109 23 There are two valves for supplying the distribution channel 109 23 provided, the steam-carrying parts in the interior 103 of the housing 102 are arranged.
  • the valves 23 form inlet valves for distribution channel 109, i.e. they control the supply of steam from the interior 103 of the Housing 102 in the distribution channel 109.
  • the distribution channel 109 is permanent and fully extensive surrounded by steam.
  • the flow path of the steam is indicated by arrows.
  • valves 23 are in the region the two ends of the distribution channel 109, i.e. here too the maximum distance from the entrance is into the distribution channel 109 to the mouth of the farthest distant supply line 108 at most Half the length of the distribution channel 109.
  • the distance E is between neighboring ones Mouths of the supply lines 108 in the steam chamber 106 is substantially the same.
  • the Distance E 'between the supply line 108, the End of the steam chamber 106 most closely adjacent is about half the distance E.
  • the individual Supply lines always lead to the Center of imaginary zones of the steam chamber 106, the but neither divided individually nor individually controllable are.
  • Fig. 6 shows schematically the path of the steam from one Steam source 25 to the steam humidifier 1.
  • a pressure regulator 26 is arranged, which in known Way has a valve 27 which via one of a controller 28 controlled drive 29 the pressure at Output 30 of the pressure regulator 26 keeps constant.
  • the regulator or converter 28 receives its measured values via a Sensor 31.
  • the steam line branches behind the pressure regulator 26 32.
  • a branch 33 is directly connected to the heating steam connection 21 of the steam humidifier 1 connected. So there is always steam at the pressure of is predetermined by the pressure regulator 26.
  • Another branch 34 is connected to the process steam connection 16 in connection.
  • this branch 34 there is a valve 35 arranged with which the process steam supply is controlled in other words, the amount of material on the web to conductive vapor.
  • Fig. 7 shows schematically the path of the steam in the Design of the device 101 according to FIGS. 4 and 5.
  • a steam source 25 with a downstream pressure regulator 26 provided.
  • the exit 30 of the pressure regulator is direct via the steam line 32 with the heating steam connection 121 of the steam humidifier 101 connected.
  • the connection 121 supplied steam via the valves 23, which via a common line 24 are controlled together, the Steam blowing chamber 106 supplied.
  • the valves 23, 25 are self-closing valves, for example designed as spring-closing valves, that without the application of a corresponding Taxpayers remain closed. They are preferred formed as linear valves, in which the allowed amount of steam linear with the control signal for the valve 23, 25 is related.

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  • Air Humidification (AREA)
  • Paper (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Claims (16)

  1. Installation d'humidification à vapeur, comportant un boítier (2, 102) qui comprend un raccord à vapeur (16, 21 ; 121) et dans lequel est agencée une chambre de soufflage de vapeur (6, 106) qui comprend, conjointement avec le boítier (2, 102), une paroi extérieure commune (5, 105) pourvue d'ouvertures de sortie de vapeur, et dans l'intérieur (3, 103) de ce boítier est agencé un canal distributeur (9 ; 109) susceptible d'être alimenté en vapeur, caractérisée en ce que le canal distributeur (9, 109) est constamment entouré de la vapeur sur tous les côtés et est en communication avec la chambre de soufflage de vapeur (6, 106) sans valves de zone via plusieurs conduites d'alimentation (8, 108) réparties sur la longueur du boítier.
  2. Installation d'humidification à vapeur selon la revendication 1, caractérisée en ce que la section du canal distributeur (9, 109) est supérieure à la somme des sections de toutes les conduites d'alimentation (8, 108).
  3. Installation d'humidification à vapeur selon l'une ou l'autre des revendications 1 et 2, caractérisée en ce que chaque conduite d'alimentation (8, 108) débouche dans la chambre de soufflage de vapeur (6, 106) avec un axe (11) qui se situe sensiblement verticalement sur une paroi d'impact (12, 112) opposée à la conduite d'alimentation (8, 108).
  4. Installation d'humidification à vapeur selon la revendication 3, caractérisée en ce que la paroi d'impact (12, 112) s'étend sensiblement à angle droit par rapport à la paroi extérieure (5, 105).
  5. Installation d'humidification à vapeur selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les conduites d'alimentation (8, 108) pénètrent sur une longueur prédéterminée (13, 113) dans l'intérieur du canal distributeur (9, 109).
  6. Installation d'humidification à vapeur selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les conduites d'alimentation (8, 108) présentent un arc entre le canal distributeur (9, 109) et la chambre de soufflage de vapeur (6, 106), qui s'étend approximativement sur 90°.
  7. Installation d'humidification à vapeur selon l'une quelconque des revendications 1 à 6, caractérisée en ce que les conduites d'alimentation (8, 108) débouchent à des distances sensiblement égales dans la chambre de soufflage de vapeur (6, 106).
  8. Installation d'humidification à vapeur selon la revendication 7, caractérisée en ce que la distance (E') entre l'extrémité de la chambre de soufflage de vapeur (6, 106) et l'embouchure de la prochaine conduite d'alimentation (108) est approximativement la moitié de la distance (E) entre des embouchures voisines des conduites d'alimentation (8, 108).
  9. Installation d'humidification à vapeur selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le canal distributeur (9, 109) comprend une amenée de vapeur (14, 23), la distance entre la conduite d'alimentation (8, 108) et l'amenée de vapeur (14, 23) étant au maximum la moitié de la longueur du canal distributeur (9, 109).
  10. Installation d'humidification à vapeur selon l'une quelconque des revendications 1 à 9, caractérisée en ce que le boítier (2) comprend un raccord à vapeur de chauffage (21), et en ce que le canal distributeur (9) comprend un raccord à vapeur de réaction (16) séparé de celui-ci.
  11. Installation d'humidification à vapeur selon la revendication 10, caractérisée en ce que le raccord à vapeur de réaction (16) comprend un canal d'entrée (15) qui s'étend à l'intérieur (3) du boítier (2) et qui est relié au canal distributeur (9) via un canal de liaison (14) qui débouche approximativement au milieu du canal distributeur (9).
  12. Installation d'humidification à vapeur selon la revendication 11, caractérisée en ce que le canal d'entrée (15) est réalisé sous la forme d'un tronçon de séchage de vapeur.
  13. Installation d'humidification à vapeur selon la revendication 12, caractérisée en ce que le canal d'entrée (15) provoque au moins un changement de direction dans le chemin d'écoulement (19) de la vapeur.
  14. Installation d'humidification à vapeur selon l'une quelconque des revendications 11 à 13, caractérisée en ce que le canal de liaison (14) est dérivé sensiblement à angle droit du canal d'entrée (15) à une distance prédéterminée en avant de son extrémité (20).
  15. Installation d'humidification à vapeur selon l'une quelconque des revendications 1 à 9, caractérisée en ce que le canal distributeur (109) comprend au moins une valve d'entrée (23) dont les parties menant de la vapeur sont agencées à l'intérieur (103) du boítier (102), la vapeur parvenant à travers la valve d'entrée (23) hors de l'intérieur (103) du boítier (102) jusque dans le canal distributeur (109).
  16. Installation d'humidification à vapeur selon la revendication 15, caractérisée en ce qu'une valve d'entrée respective (23) est agencée dans la zone de chaque extrémité du canal distributeur (109).
EP95118995A 1995-01-12 1995-12-02 Installation d'humidification à vapeur Expired - Lifetime EP0722009B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19500752 1995-01-12
DE19500752A DE19500752C2 (de) 1995-01-12 1995-01-12 Dampfbefeuchtungseinrichtung

Publications (3)

Publication Number Publication Date
EP0722009A2 EP0722009A2 (fr) 1996-07-17
EP0722009A3 EP0722009A3 (fr) 1998-02-04
EP0722009B1 true EP0722009B1 (fr) 2002-03-13

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EP95118995A Expired - Lifetime EP0722009B1 (fr) 1995-01-12 1995-12-02 Installation d'humidification à vapeur

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US (1) US5623771A (fr)
EP (1) EP0722009B1 (fr)
AT (1) ATE214445T1 (fr)
CA (1) CA2165095C (fr)
DE (1) DE19500752C2 (fr)

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US5798026A (en) * 1996-10-04 1998-08-25 Measurex Devron Inc. Dry end steam applicator
US6287425B1 (en) 1998-05-18 2001-09-11 The Procter & Gamble Company Apparatus for increasing bulk of foreshortened fibrous web
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CA2739334A1 (fr) * 2008-10-01 2010-04-08 Dr. Gum Inc. Appareil et procede pour eliminer d'une surface, des depots de gomme, des substances adhesives, de la peinture et autre
DE102010041762A1 (de) 2010-09-30 2012-04-05 Voith Patent Gmbh Vorrichtung zum Befeuchten der Oberflächenschicht einer Faserstoffbahn
DE102015217370A1 (de) * 2015-09-11 2017-01-05 Voith Patent Gmbh Dampfblaskasten

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DE19500752C2 (de) 2000-11-30
EP0722009A2 (fr) 1996-07-17
CA2165095C (fr) 1998-12-01
EP0722009A3 (fr) 1998-02-04
ATE214445T1 (de) 2002-03-15
US5623771A (en) 1997-04-29
DE19500752C1 (de) 1996-01-04
CA2165095A1 (fr) 1996-07-13

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