EP1531197A1 - Distributeur de vapeur - Google Patents

Distributeur de vapeur Download PDF

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Publication number
EP1531197A1
EP1531197A1 EP04024456A EP04024456A EP1531197A1 EP 1531197 A1 EP1531197 A1 EP 1531197A1 EP 04024456 A EP04024456 A EP 04024456A EP 04024456 A EP04024456 A EP 04024456A EP 1531197 A1 EP1531197 A1 EP 1531197A1
Authority
EP
European Patent Office
Prior art keywords
steam
running direction
web
group
blower box
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.)
Granted
Application number
EP04024456A
Other languages
German (de)
English (en)
Other versions
EP1531197B1 (fr
Inventor
Stefan H. 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
Original Assignee
VIB Apparatebau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VIB Apparatebau GmbH filed Critical VIB Apparatebau GmbH
Publication of EP1531197A1 publication Critical patent/EP1531197A1/fr
Application granted granted Critical
Publication of EP1531197B1 publication Critical patent/EP1531197B1/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

Definitions

  • the invention relates to a steam blower box for applying steam a passing material web, in particular paper, with a transversely to the Web running direction extending, the material web facing housing wall, in which a plurality of steam outlet openings is formed.
  • a maximum efficiency of the evaporation is only at ideal Reached conditions, i. if no additional heat transfer resistance between the steam and the railway is present. However, this ideal condition is barely given. Although this is not the case with a moving web to heat exchangers or boilers of the heat transfer resistance due to the resulting condensate film because of this constantly out of the way the vaporization area is conveyed out. But the steam room on A moving web is normally not only filled with steam. By train As a result of friction, an air film is constantly conveyed into the evaporation zone. This air enters with the steam in energy exchange. A part of the steam condenses in the air instead of the train and therefore can no longer contribute to desirable warming and moisture accumulation of the web.
  • DE 44 01 220 C 1 describes a steam blower box, in which by a Sectionally different vapor deposition the moisture profile of the web can be influenced.
  • the sectioned zone chambers used for this are each with a separate steam line and a control valve with connected to the steam distributor.
  • the common steam outlet plate points several rows of blowing openings. These rows of blow holes are arranged in the steam outlet plate obliquely to the direction of the web. The steam outlet is directed against the material direction. With this Steam box, it is possible, the web across the direction of travel Steam in blocks.
  • the object of the present invention is to propose a steam blower box, in which the steaming area is essentially kept free of air becomes.
  • this is in the web running direction front (upstream) and / or rear (downstream), through adjacent steam outlet openings formed end of a group diagonally to the web running direction. Due to the oblique orientation of the steam outlet openings the angle of impact of the air on the evaporation area decreases. The change of direction required for the deflection of the air is low, and the air is easy, even and effective to distract.
  • the front and / or rear side of the group is at least partially at an angle ⁇ in the range of 30 to 60 °, preferably 45 °, inclined to the web running direction.
  • the airflow then hits in this Angle ⁇ on the emerging from the steam outlet openings steam flow.
  • the back pressure of the air decreases in proportion to tan ⁇ , since the pent-up Air can flow freely sideways to the web direction.
  • each Group essentially the shape of an arrow or a parallelogram having.
  • two of the four can be arranged side by side Steam outlet openings formed sides of a group parallel to Web running direction, so that no deflection takes place in this area.
  • adjacent groups are in the web running direction arranged offset to each other, so that the air flow in several Stages is deflected. This creates cross-web evaporation areas at one point and vapor-free areas. Continue in the direction of the train At the back, the previously vapor-free areas are steamed.
  • this is preferably every other Group arranged in the web running direction at the same height.
  • a group is arranged so that they over a portion of their length in the web running direction directly to an adjacent group borders. As a result, the width of the steam blow box can be reduced.
  • edges the respective groups through continuous rows of steam outlet openings be formed to prevent entry of air and associated turbulence to avoid.
  • the number of total provided steam outlet depends in particular of the amount of steam to be applied and the web speed from, with the distribution within the respective groups evenly or unevenly can be.
  • the steam blower can transversely to the web running direction in a plurality be separated separately controllable zones, the cross-sectional control the Allowing different amounts of steam allow.
  • Each zone can do this have at least one group with steam outlet openings, so that the Coating areas coincide with the transverse to the web zones arranged.
  • Zone dividing walls are not arranged exactly in the direction of the web, but also be inclined to the web direction, preferably in the same sense and extent as the boundaries of the vaporization areas. This creates coverages These evaporation areas, which compensates for the described effect can be.
  • a steam blower box 1 is, for example, for vapor deposition of a material web, in particular a paper web 2, on a calender (not shown) used in which the web for improving the gloss and smoothness properties or passes through several nips.
  • the web 2 is in this case in the direction of Arrow Y passed the steam blower box 1 and supplied with steam.
  • the steam blower box 1 has a steam blast chamber 3 with one of the paper webs 2 facing housing wall 4, in which a plurality of steam outlet openings 5 is formed.
  • the steam chamber 3 is about a Steam valve 6 is supplied with steam and passes it through the steam outlet openings 5 on the paper web 2 from, on which it condenses and their temperature and moisture increased before treatment in the nip of the calender.
  • the steam blower box 1 does not differ from conventional Steam blow boxes as they are described, for example, in DE 37 01 406 C2.
  • the housing wall 4, 4 ', 4 ", 4"' shown in partial plan view in FIGS. 2 to 5 is designed as a profiled perforated sheet with the steam outlet openings 5.
  • the steam outlet openings 5 are combined to form a plurality of (four exemplified) groups 5a to 5d.
  • the groups 5a to 5d are each in the form of a parallelogram.
  • the front in the web direction formed by steam outlet openings 5 sides 7 1 of the groups 5a to 5d as well as the rear sides 7 2 each inclined at an angle ⁇ relative to the web running direction, while the adjoining lateral sides 7 3 , 7 4 of the groups 5a to 5d are arranged parallel to the web running direction.
  • the groups 5a to 5d are formed in the shape of an arrow or wedge.
  • the groups 5a to 5d are offset from one another and form between vapor-free sections 8a to 8c.
  • the steam outlet openings 5 can be arranged evenly distributed.
  • areas 9, 10 may be provided without steam outlet openings 5 (cf., FIG. 3), wherein the areas 9, 10 should be surrounded on all sides by at least one row of steam outlet openings 5.
  • At the front and rear sides 7 1 , 7 2 of the groups 5 a to 5 d preferably several rows of steam outlet openings 5 should be provided in succession in order to apply the required amount of steam can.
  • channels 11 or 11a and 11b are formed between the groups, by means of which the air entrained by the material web 2 is deflected in a targeted manner and past the vapor deposition regions (groups 5a to 5d).
  • the arrows show the course of the air entrained between the perforated plate 4 and the material web 2. Due to the oblique arrangement of the front sides 7 1 of the groups 5a to 5d, the deflection is supported. So that the channel cross-section remains largely constant and no constrictions lead to turbulence of the air, the rear sides 7 2 of the groups 5 a to 5 d are inclined at a corresponding angle.
  • the groups 5a to 5d are transverse to the web running direction offset from one another in such a way that between adjacent Groups 5a to 5d each have a vapor-free section 8a to 8c is formed.
  • the front steam outlet openings 5 are here in one Angle of approximately 45 ° obliquely arranged to the web running direction.
  • the deflection takes place gradually.
  • the groups 5a to 5d are offset in the web running direction arranged to each other, so that stepped vapor-free sections 8a, 8b be formed, through which the air is discharged.
  • the neighboring ones Groups 5b and 5c adjoin each other in regions, so that between this air can not pass through.
  • the front Steam outlet openings 5 at an angle of approximately 30 ° obliquely to the web running direction arranged.
  • the groups 5a to 5d are designed in the form of arrows.
  • the entrained air of the paper web meets the arrowheads 13, it is divided into two air streams and on the two sides of the arrow 14 1 and 14 second past.
  • the arrow sides 14 1 and 14 2 are opposite to each arranged at an angle of approximately 45 ° obliquely to the web running direction.
  • the arrow sides of the rearward arrows may also be steeper, eg at an angle of 60 °, than the arrowheads of the forward arrows (groups 5b and 5d).
  • the groups 5a to 5d in the same Manner formed as simple parallelograms as in the embodiment according to FIG. 2.
  • the groups are in FIG Web running direction arranged offset. This allows the air to drain even easier become.
  • the steam blower box 1 can have several separately controllable transversely to the web direction Zones 12a to have 12 d, wherein each of the zones at least one group 5a to 5d of steam outlet openings. This can be as needed Moisture and / or temperature profile across the direction of travel on the paper web be applied.
  • Profile perforated plate 4 Due to the special arrangement of the steam outlet openings 5 in the invention Profile perforated plate 4 is the mitbe highlightedte with the web 2 air film simply and effectively diverted past the sputtering areas. Thereby the vaporization areas of air are kept almost free and the discharged Steam can condense directly on or in the material web. Consequently ensures high heat and moisture transfer to the web. The efficiency of the steam blow box is increased accordingly.

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
EP04024456A 2003-11-13 2004-10-14 Distributeur de vapeur Expired - Lifetime EP1531197B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10352980 2003-11-13
DE10352980A DE10352980B4 (de) 2003-11-13 2003-11-13 Dampfblaskasten

Publications (2)

Publication Number Publication Date
EP1531197A1 true EP1531197A1 (fr) 2005-05-18
EP1531197B1 EP1531197B1 (fr) 2009-03-11

Family

ID=32087406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04024456A Expired - Lifetime EP1531197B1 (fr) 2003-11-13 2004-10-14 Distributeur de vapeur

Country Status (5)

Country Link
US (1) US6944966B2 (fr)
EP (1) EP1531197B1 (fr)
AT (1) ATE425302T1 (fr)
CA (1) CA2487537C (fr)
DE (3) DE10352980B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008050899A1 (de) 2008-09-25 2010-04-08 Gerhard Bach Vorrichtung zum Befeuchten von flexiblem Flachmaterial

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10352980B4 (de) * 2003-11-13 2006-10-12 V.I.B. Systems Gmbh Dampfblaskasten
DE102015217375A1 (de) * 2015-09-11 2017-03-16 Voith Patent Gmbh Dampfblaskasten
WO2017132123A1 (fr) 2016-01-28 2017-08-03 Kimberly-Clark Worldwide, Inc. Appareil et procédé d'égouttage de voile fibreux

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309076A1 (de) * 1993-03-20 1994-09-22 Vib Apparatebau Gmbh Dampfsprührohr und Verfahren zum Einstellen von Glanz und/oder Glätte einer Materialbahn
EP1143067A2 (fr) * 2000-04-06 2001-10-10 Metso Paper Automation OY Procédé pour souffler de la vapeur sur une bande de papier et distributeur de vapeur pour machine à papier
DE20319797U1 (de) * 2003-11-13 2004-04-01 V.I.B. Systems Gmbh Dampfblaskasten

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011544A (en) * 1959-01-09 1961-12-05 Lippke Paul Machines for the manufacture of webs of fibrous material
US3208158A (en) * 1963-04-09 1965-09-28 Hupp Corp Dryers
SE309904B (fr) 1965-11-23 1969-04-08 Svenska Flaektfabriken Ab
DE1964194C3 (de) 1969-12-22 1973-11-08 Westvaco Corp., New York, N.Y. (V.St.A.) Vorrichtung zum Verteilen von Dampf auf eine laufende Bahn aus wasseraufnehmendem Material
DE2031979A1 (de) 1970-06-29 1972-01-05 Weser Ag Vorrichtung zur Messung der Seilzugkräfte an Winden
DE3701406A1 (de) 1987-01-20 1988-07-28 Vib Apparatebau Gmbh Vorrichtung zum aufbringen von dampf auf eine materialbahn, wie papier
DE4401220C1 (de) 1994-01-18 1995-06-29 Voith Gmbh J M Dampfblaskasten
DE19534573C2 (de) 1995-09-18 2001-08-23 Voith Sulzer Papiermasch Gmbh Dampfblaskasten und Verfahren zum zonenweisen Temperieren einer laufenden Papierbahn
US5933981A (en) * 1996-04-06 1999-08-10 Voith Sulzer Papiermaschinen Gesellschaft Mbh Device and method for stabilizing a continuous paper web in a paper-making machine in the vicinity of a roll
DE10115726A1 (de) 2001-03-30 2002-10-02 Voith Paper Patent Gmbh Auftragsvorrichtung
DE10154828A1 (de) 2001-11-08 2003-05-15 Voith Paper Patent Gmbh Dampfblaskasten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309076A1 (de) * 1993-03-20 1994-09-22 Vib Apparatebau Gmbh Dampfsprührohr und Verfahren zum Einstellen von Glanz und/oder Glätte einer Materialbahn
EP1143067A2 (fr) * 2000-04-06 2001-10-10 Metso Paper Automation OY Procédé pour souffler de la vapeur sur une bande de papier et distributeur de vapeur pour machine à papier
DE20319797U1 (de) * 2003-11-13 2004-04-01 V.I.B. Systems Gmbh Dampfblaskasten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008050899A1 (de) 2008-09-25 2010-04-08 Gerhard Bach Vorrichtung zum Befeuchten von flexiblem Flachmaterial
DE102008050899B4 (de) * 2008-09-25 2013-03-28 Gerhard Bach Vorrichtung zum Befeuchten von flexiblem Flachmaterial

Also Published As

Publication number Publication date
DE10352980A1 (de) 2005-06-09
DE10352980B4 (de) 2006-10-12
EP1531197B1 (fr) 2009-03-11
CA2487537A1 (fr) 2005-05-13
DE20319797U1 (de) 2004-04-01
ATE425302T1 (de) 2009-03-15
CA2487537C (fr) 2008-01-22
US6944966B2 (en) 2005-09-20
DE502004009121D1 (de) 2009-04-23
US20050108894A1 (en) 2005-05-26

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