EP0897092A1 - Séchage à condensation - Google Patents

Séchage à condensation Download PDF

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Publication number
EP0897092A1
EP0897092A1 EP98109839A EP98109839A EP0897092A1 EP 0897092 A1 EP0897092 A1 EP 0897092A1 EP 98109839 A EP98109839 A EP 98109839A EP 98109839 A EP98109839 A EP 98109839A EP 0897092 A1 EP0897092 A1 EP 0897092A1
Authority
EP
European Patent Office
Prior art keywords
condensation
web
condensation element
hollow body
condensate collector
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.)
Withdrawn
Application number
EP98109839A
Other languages
German (de)
English (en)
Inventor
Karl Dr. Steiner
Markus Oechsle
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.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiertechnik Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19734373A external-priority patent/DE19734373A1/de
Priority claimed from DE19734372A external-priority patent/DE19734372A1/de
Application filed by Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Sulzer Papiertechnik Patent GmbH
Publication of EP0897092A1 publication Critical patent/EP0897092A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F26B13/30—Arrangements of devices using drying processes not involving heating for applying suction
    • 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
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/30—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/33—Humidity
    • F26B21/333—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle

Definitions

  • the invention relates to a condensation element for paper, coating and Tissue machines for the production and finishing of fibrous webs.
  • Such a device is described for example in DE-OS 40 09 797 described.
  • the solvents emerging from a web condense on a rotating condensation surface.
  • the invention also relates to a suction element consisting of a connected to a vacuum source, the hollow body near a wet and heated web moving past it, in particular one Paper web, a textile web or another fibrous web, one Sieve, a band or a felt is arranged and at least one for Has web-oriented opening.
  • Such suction elements are found particularly in machines for manufacturing and finishing of paper webs, textile webs or other fibrous webs Application and are in the form of a rotating roller perforated roll shell for example from EP 738 801 and the DE-Gbm 29 601 543 known. It can be connected to the vacuum source Suction box as in EP 738 801 in the roller or according to the DE-Gbm 29 601 543 outside the roller on the one not wrapped by the web Be arranged part of the circumference.
  • the negative pressure can be used to guide the web to or on the suction element and / or serve to remove moisture from the web. Regardless of the purpose, however, there is always a certain amount of water discharged together with the air via the suction element. The separation the water then takes place outside the machine, for example via a Heat exchanger as in DE-PS 38 37 133. This is relatively expensive and requires a corresponding one because of the water to be extracted large vacuum value.
  • a device for dewatering paper webs with a suction element is known from US 2,714,839.
  • DE-PS 17 37 28 relates to one Decatizing cylinder with a bowl to catch with a scraper smeared condensed water.
  • the object of the invention is to provide a device that is as possible is simple and effective drying of fibrous webs enables.
  • At least one cooled and fixed condensing element in places of increased water vapor formation and / or accumulation is arranged and has a condensate collector.
  • the condensate collector is located preferably under the condensation element, whereby also a condensate collector is assigned to several condensation elements can be.
  • the condensate collector is easy to remove if necessary, the reuse of the condensate in the process possible.
  • Condensation element To the low temperature on the surface necessary for the condensation to be able to ensure the condensation element should Condensation element have at least one cooling channel by one Coolant, preferably water, is flowed through.
  • Coolant preferably water
  • the condensation element should be removed as much as possible across the fibrous web and preferably over the entire web Width. This will make the condensation element easy to attach on both sides of the fibrous web on the machine frame possible.
  • the condensation element should Enlargement of the surface a profiled, preferably corrugated surface have.
  • the arrangement can be supplemented by at least one other rotatable stored condensation element in the form of a roller. This makes possible direct contact with the sieve, felt or fibrous web to be cooled, because they are generally moving at high speed.
  • the condensate collector can be a rotating condensation element touching wiper element in the form of a scraper, which is axially along the Roll runs, serve.
  • the condensation element can be used advantageously in press and dryer sections the above Machines are used, the condensing element preferably in the vicinity of the heated fibrous web and / or of a warmed screen or felt.
  • the condensation elements can also be arranged in a hood be an area of the machine with water vapor formation at least partially covered and preferably an outlet for the water vapor having. Because of the condensation in the hood, less has to be done Water vapor can be removed from the hood.
  • a condensation element in the direction of web travel connect so that the water vapor emerging from the fibrous web can immediately condense and be discharged. This speeds up the drying process of the fibrous web.
  • the object was achieved in that Hollow body of the suction element according to claim 6 at least one cooled Condensation element and at least one condensate collector arranged is.
  • the condensation element should have at least one cooling channel that is flowed through by a coolant, preferably water.
  • a coolant preferably water.
  • the condensing element should fixed and the condensate collector under the condensation element to be appropriate. It is also advantageous if a Condensate collector is assigned to several condensation elements.
  • the hollow body runs approximately transversely to the web and preferably across their entire width. Depending on the individual case, he can however, they are also limited to only part of the width, for example for the transfer of strips of a fibrous web.
  • the hollow body is fixed, it is in particular when the web is guided directly along the hollow body by Advantage if the hollow body at the points of contact with the web Has sliding body.
  • the rotatable arrangement of the hollow body in predominates Form of a roller, the roller shell of which is partially wrapped in the web is.
  • the roller jacket preferably has Breakthroughs in Shape of holes.
  • suction elements are used in particular in dry or Press sections in machines for the production or finishing of paper, Textile or other fibrous webs.
  • All embodiments of the condensation element shown in FIGS. 1 to 6 is common that one or more cooled and fixed Condensation elements 1 in places of increased water vapor formation and / or accumulation in paper, coating or tissue machines and there are arranged in particular in dryer or press sections. There are 1 condensate collector under the condensation elements 3 from which the condensate can be removed.
  • the condensation elements 1 have at least one cooling channel 4 which is flowed through by a coolant, preferably water.
  • condensation elements 1 run transversely to the fibrous web 2 across their entire width. Own to enlarge the surface the condensation elements 1 a profiled, preferably wavy surface.
  • the moist air can accumulate on the cooled condensation elements 1 knock down.
  • the condensate then drips into the condensate collector. Because of the reduced humidity, the drying of the Fibrous web 2.
  • condensation elements 1 shows a section of a dryer section in which the fibrous web 2 together with a sieve 10 alternately over heated Drying cylinder 11 and guide rollers 12 is guided. While heating up The fibrous web 2 on the drying cylinders 11 collects water vapor in the sieve 10, which in the return of the endless sieve 10 can condense on the condensation elements 1. Both condensation elements 1 is a common condensate collector 3 assigned.
  • Fig. 2 the fibrous web 2 runs alone over a heated drying cylinder 11. Under the drying cylinder 11 are in the looping area the fibrous web 2 a plurality of condensation elements 1 in Form of pipes with a common condensate collector 3.
  • the Condensate collector 3 has sliding bodies 14 on its open side Ceramic, so that contact with the fibrous web 2 is not negative affects.
  • the fibrous web 2 is together with a Screen 10 guided over a guide roller 12, the fibrous web 2 outside lies and the guide roller 12 can be vacuumed.
  • the guide roller 12 is a heating element 9 for heating the fibrous web 2nd
  • the warming leads to the formation of water vapor. For this The reason closes in the web running direction at the looping area a condensation element 1 with two cooling channels 4.
  • the condensate collector 3 is connected to the heating element 9 via an insulation element 12 connected.
  • Fig. 4 shows at least a portion of a press section in which the fibrous web 2 together with a felt 16 for drainage by one press nip 15 formed by two press rolls runs.
  • the fibrous web 2 runs one more Continue on the heated lower press roll 15 before moving on to the next one Unit of the machine arrives.
  • the condensate collector 3 open towards the fibrous web 2 are surrounded.
  • FIG 5 shows a section of a dryer section in which the fibrous web 2 together with the sieve 10 alternately via heated drying cylinders 11 and guide rollers 12 runs, the drying cylinder 11 in a row under the guide rollers 12 are arranged.
  • the condensation elements 1 with the condensate collector 3 in the space between the drying cylinders 11 under a guide roller 12.
  • the heated fibrous web evaporates 2 through the sieve 10.
  • FIG. 6 A whole dryer group is shown in the embodiment in FIG. 6. In this also runs the fibrous web 2 together with a sieve 10 alternately via heated drying cylinders 11 and guide rollers 12, wherein however, the drying cylinders 11 are arranged above the guide rolls.
  • the entire drying group is covered by a hood 7, however, the at least part of the water vapor through the discharge line 8 removed from the area of the drying group, which has a positive effect on the Drying result affects.
  • both versions of the suction element described in FIGS. 7 to 9 is common that the suction element from a with a vacuum source connected hollow body 101, which is in the vicinity of a moving past moist and heated web 102 is arranged and at least has an opening 103 directed towards the web 102.
  • the moisture from the extracted air is at least in the hollow body 101 a cooled condensation element 104 and at least one condensation collector 105 arranged. The moisture can thus become the condensation element 104 and into the condensate collector drain. From there it is discharged from the suction element. As a result, less air needs to be sucked in, which is energetic has a positive effect.
  • the condensing element 104 fixed, the condensate collector 105 below the condensing element 104.
  • they are also rotating Condensation elements 104 possible. In this case, the condensate stripped from the surface of the condensing element 104 and / or caught in the spraying due to the centrifugal force.
  • the condensation elements have to enlarge the condensation surface 104 a profiled surface. They also have the condensation elements 104 at least one cooling channel 106, the cold Water is flowing through.
  • the suction elements run across the web 102 and across their entire width.
  • the application is of the suction element in a press section for dewatering Fibrous web as seen in paper.
  • the moist and heated fibrous web is combined with a web 102 in the form of a drainage felt through a Press nip led.
  • the press nip is a press roller and the suction element formed in the form of a rotatably mounted roller, the roller shell is perforated.
  • the in the press nip from the fibrous web in the Dewatering felt pressed liquid arrives together with the suctioned Air through the openings 108 into the interior of the roll shell.
  • the moisture can condense there on the condensation elements 104.
  • the drained condensate arrives in the condensate collector 105 via an outlet 109 from the roller.
  • the inside of this hollow body 101 is connected to a vacuum source via a line 110.
  • Around to limit the intake air is the suction space 111 of the Hollow body 101 on the area wrapped by the web 102 Restricted roller over seals 112.
  • condensation elements 104 in here Form of a pipe loop through which the cooling water flows.
  • Condensation elements 104 a common condensate collector 105 assigned.
  • a fixed suction element is shown, over which a fibrous web guided on a web 102 in the form of a dryer fabric is. This serves to redirect the course of the path and simultaneous removal of moisture from the dryer fabric.
  • the suction element 101 has a large number of openings facing the web 102 103 and at the points of contact with the web 102 sliding body 107 made of ceramic, for example.
  • a condensation element 104 with a cooling channel 106.
  • the collected condensate can also drain here 109 of the condensate collector 105 reach the outside.
  • the suction takes place via a line 110 connected to a vacuum source.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP98109839A 1997-08-08 1998-05-29 Séchage à condensation Withdrawn EP0897092A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19734373A DE19734373A1 (de) 1997-08-08 1997-08-08 Saugelement
DE19734373 1997-08-08
DE19734372 1997-08-08
DE19734372A DE19734372A1 (de) 1997-08-08 1997-08-08 Kondensationselement

Publications (1)

Publication Number Publication Date
EP0897092A1 true EP0897092A1 (fr) 1999-02-17

Family

ID=26038965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109839A Withdrawn EP0897092A1 (fr) 1997-08-08 1998-05-29 Séchage à condensation

Country Status (2)

Country Link
US (1) US6148538A (fr)
EP (1) EP0897092A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108517A1 (de) * 2001-02-22 2002-08-29 Voith Paper Patent Gmbh Feuchtequerprofil
FI116731B (fi) * 2001-06-26 2006-02-15 Metso Paper Inc Päällepuhallusjärjestelmä paperikoneen tai vastaavan kuivatusosassa

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173728C (fr)
US2714839A (en) 1951-02-28 1955-08-09 Mazer Jacob Apparatus for extracting water from paper stock
US3196555A (en) * 1960-10-04 1965-07-27 Fleissner Gmbh Drying apparatus
GB1401041A (en) * 1971-05-26 1975-07-16 Kores Holding Zug Ag Solvent recovery
DE2607504A1 (de) * 1976-02-25 1977-09-01 Gerhard Klemm Vorrichtung zum trocknen von duennen materialien in stuecken oder bahnen im durchlauf
FR2355258A1 (fr) * 1976-06-15 1978-01-13 Boewe Boehler & Weber Kg Masch Tambour secheur tournant autour d'un axe dans une enveloppe
US4321757A (en) * 1976-08-20 1982-03-30 Oce-Van Der Grinten N.V. Drying apparatus and method
DE3215042A1 (de) * 1982-04-22 1983-11-10 Klaus 2000 Oststeinbek Sievers Entwaesserung durch kondensation
DE3837133C1 (fr) 1988-11-02 1990-04-12 Tch Thermo-Consulting-Heidelberg Gmbh, 6900 Heidelberg, De
DE4009797A1 (de) 1990-03-27 1991-10-02 Pagendarm Gmbh Verfahren und anordnung zum kondensieren von dampffoermigen substanzen
DE29601543U1 (de) 1996-01-30 1996-03-28 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Führen einer Faserstoffbahn in einer einreihigen Trockenpartie
EP0738801A2 (fr) 1995-04-19 1996-10-23 Voith Sulzer Papiermaschinen GmbH Rouleau aspirant
WO1997011328A1 (fr) * 1995-09-18 1997-03-27 Minnesota Mining And Manufacturing Company Systeme de sechage de substrat enduit

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA887718A (en) * 1971-12-07 James L. Dunn, Jr. Drying and recovery process
US2448514A (en) * 1945-03-24 1948-09-07 American Can Co Heat-treating machine
US4556450A (en) * 1982-12-30 1985-12-03 The Procter & Gamble Company Method of and apparatus for removing liquid for webs of porous material
FI69141C (fi) * 1984-10-09 1985-12-10 Tampella Oy Ab Foerfarande och anordning foer torkning av en pappersbana eller liknande
US4706391A (en) * 1986-10-15 1987-11-17 Urbas John C Heat collector for the dryer section of a papermaking machine
US5048200A (en) * 1990-06-19 1991-09-17 Ahsltromforetagen Svenska Ab Process and apparatus for dehumidifying wet air
US5107919A (en) * 1991-06-03 1992-04-28 Pioneer Air Systems, Inc. Air dryer for pneumatic systems
FI95731C (fi) * 1991-11-05 1996-03-11 Valmet Paperikoneet Oy Keksintö kohdistuu menetelmään ja laitteeseen paperirainan lepatuksen estämiseksi paperikoneen kuivatusosalla sen kahden yksiviiravientiryhmän välillä
JP2702339B2 (ja) * 1991-11-18 1998-01-21 シーケーディ株式会社 除湿器用熱交換器
FI96790C (fi) * 1994-10-11 1996-08-26 Tampella Oy Valmet Laite kuiturainan kuivaamiseksi ja sileyttämiseksi
FI101985B1 (fi) * 1996-12-10 1998-09-30 Valmet Corp Menetelmä ja laitteisto kuiturainan kuivaamiseksi

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE173728C (fr)
US2714839A (en) 1951-02-28 1955-08-09 Mazer Jacob Apparatus for extracting water from paper stock
US3196555A (en) * 1960-10-04 1965-07-27 Fleissner Gmbh Drying apparatus
GB1401041A (en) * 1971-05-26 1975-07-16 Kores Holding Zug Ag Solvent recovery
DE2607504A1 (de) * 1976-02-25 1977-09-01 Gerhard Klemm Vorrichtung zum trocknen von duennen materialien in stuecken oder bahnen im durchlauf
FR2355258A1 (fr) * 1976-06-15 1978-01-13 Boewe Boehler & Weber Kg Masch Tambour secheur tournant autour d'un axe dans une enveloppe
US4321757A (en) * 1976-08-20 1982-03-30 Oce-Van Der Grinten N.V. Drying apparatus and method
DE3215042A1 (de) * 1982-04-22 1983-11-10 Klaus 2000 Oststeinbek Sievers Entwaesserung durch kondensation
DE3837133C1 (fr) 1988-11-02 1990-04-12 Tch Thermo-Consulting-Heidelberg Gmbh, 6900 Heidelberg, De
DE4009797A1 (de) 1990-03-27 1991-10-02 Pagendarm Gmbh Verfahren und anordnung zum kondensieren von dampffoermigen substanzen
EP0738801A2 (fr) 1995-04-19 1996-10-23 Voith Sulzer Papiermaschinen GmbH Rouleau aspirant
WO1997011328A1 (fr) * 1995-09-18 1997-03-27 Minnesota Mining And Manufacturing Company Systeme de sechage de substrat enduit
DE29601543U1 (de) 1996-01-30 1996-03-28 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Führen einer Faserstoffbahn in einer einreihigen Trockenpartie

Also Published As

Publication number Publication date
US6148538A (en) 2000-11-21

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