US3377056A - Drying apparatus - Google Patents

Drying apparatus Download PDF

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Publication number
US3377056A
US3377056A US580699A US58069966A US3377056A US 3377056 A US3377056 A US 3377056A US 580699 A US580699 A US 580699A US 58069966 A US58069966 A US 58069966A US 3377056 A US3377056 A US 3377056A
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US
United States
Prior art keywords
drying
medium
heat
chamber
plenum chamber
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
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US580699A
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English (en)
Inventor
Boye Ingar
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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Publication date
Application filed by Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
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Publication of US3377056A publication Critical patent/US3377056A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F26B13/145—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning on the non-perforated outside surface of which the material is being dried by convection or radiation
    • 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
    • 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

Definitions

  • the present invention relates to a dryer comprising a plenum chamber having at least one fan and at least one wall with means such as nozzles or apertures for directing gaseous medium onto the material to be dried.
  • the invention is intended primarily for use in drying moving webs or sheets such as paper webs or sheets of wall board.
  • 'drying is conventionally carried out by blowing a hot gaseous medium, usually air, against the material to be dried from a plenum chamber having a wall, either perforated or equipped with nozzles, situated near the path of travel of the material.
  • a hot gaseous medium usually air
  • the air is conventionally heated in an indirect heat exchanger having steam as the source of heat. Since the drying is more 'rapid if the temperature of the drying medium is raised, a higher temperature is striven 'for because in this way the dryer may be made smaller for a driven throughput of material.
  • the heat exchanger may advantageously be replaced by a combustion chamber connected with a mixing chamber.
  • the heating of the drying medium is effected through direct heat exchange with flue gases, which are produced in the combustion chamber and then mixed with the drying medium in the mixing chamber, to be taken then in heat-insulated ducts to the dryer and its plenum chamber. In this way, corrosion and accumulation of soot on the surfaces of a heat exchanger is avoided.
  • the invention provides a compact dryer for temperatures considerably in excess of 180 C.
  • a single space i.e. the plenum chamber, serves both as a combustion chamber and mixing chamber.
  • the bulky ducts of conventional dryers are eliminated, and the dryer does not require more space than a corresponding steam-heated dryer intended for temperature of up to 180 C.
  • All the parts included in the dryer can be built together as a unit, so that the installation on the users premises can be restricted to the connection of pipes and wires for fuel and electricity. Moving the dryer between different machines on the users premises is simple.
  • a conversion of an existing steam-heated dryer for maximal drying-medium temperature of about 180 C. to considerably higher temperatures can easily be effected in a short time and at low cost, using the same fans if the dryer is made in accordance with the present invention.
  • FIG. 1 is a cross section axis
  • FIG. 2 is an enlarged view showing the perforated wall of the plenum chamber, as encircled in FIG. 1;
  • FIG. 3 is a'view similar to FIG. 2 showing nozzles in the wall of the plenum chamber.
  • a rotating cast-iron cylinder 1 a socalled Yankee cylinder, is steam heated from the inside in the drying part of a paper machine.
  • a web 2, for example paper is conducted over the cylinder 1 and the cylindrical mantle surface of the cylinder is partly encompassed by a hood 3 enclosing a plenum chamber 4 and a suction chamber 5.
  • Partition walls 6 separate the plenum chambers 4 and the suction chambers 5 and mount fans 7 which suck drying medium from the suction chambers 5 and blow it into the plenum chambers 4.
  • One wall 8 of the plenum chamber is perforated with a number of vsmall holes 9 to direct drying medium from the chamber onto the web.
  • the fans 7 are driven by motors 10 located outside the hood 3.
  • iiltersll are mounted in front of the fan inlets.
  • the drying medium directed against the web 2 is returned to the suction chamber 5 by return pipes 12, the drying medium passing across the web 2 removing moisture therefrom to dry the same.
  • Fresh air is admitted to the suction chambers 5 through ducts 13, the chambers 5 being at a slight under-pressure in relation to the surroundings.
  • the fresh air is mixed with the moist drying medium coming from the return pipes 12 and the mixture is sucked into the fans 7 through the lters 11.
  • some of the mixture is blown otf from the plenum chambers 4 through ducts 14.
  • burners 15 are provided in the walls of the plenum at right angles to the cylinder chambers. Fuel is mixedrwith combustion air and transported to the burners 15 through pipes 16 and the flow is controlled by valves 20. Conventional burner accouterments are provided at 21 and 22. rlhe burners 15 open into the plenum chambers 4 and the mixture of fuel and combustion air burns with an open flame. 'l he iames are enclosed by casings 17 having an inner tireproof lining.
  • the casings protect the walls of the plenum chambers 4 from radiated heat from the flames and direct the ow of combustion gases in a proper direction for the rapid mixing with the rest of the drying medium.
  • the combustion is completed and the velocity of the combustion gases may be as high as 500 m./sec. In this way, the relationship between the capacity of the burners, calculated as ow of heat, and their size is very favorable.
  • the casings 17 direct the combustion gases in a cone with a wide cone angle.
  • the mixing with the drying medium is thus efficiently accomplished.
  • over-temperatures as small as 5 C. can be obtained 40 cm. from a burner.
  • the burners 15 and the fans 7 are placed in relation to each other so that upon exit from the casings 17, the combustion gas collides from the side with the stream of drying medium from the adjacent fan. It is preferable to insure intersection of the paths of the flue gases and the drying medium so that the axes of symmetry of the two streams lie essentially in the same plane, and in this plane the axes form an angle of between 25 and 160 with each other. Since the gas in both streams has a high absolute speed at the point f intersection, their relative velocity will be great which favors homogeneous mixing.
  • the function of the filters 11 is to catch the fibers from the web which are carried by the drying medium back to the return pipe 12. If the fibers were allowed to pass through the fans, some of them will be burned or charred in the plenum chambers, and on being blown against the web, would discolor the same.
  • the fibers must also in some way be removed from the filter, and this is done in a known manner, i.e. in machines intended for continuous operation preferably through vacuuming with a device according to the copending U.S. patent application of Wallin, Ser. No. 544,650 filed Mar. 30, 1966. In the drawing, however, only doors 18 are provided in the hood, which during operation may be opened to receive a vacuum-cleaner nozzle which sucks off the fibers.
  • a controller 19 is provided in conjunction with the power supply to the fans 7 to actuate valve means 20 in the fuel supply line 16 whereby the burner 15 is extinguished when the fans 7 stop.
  • the burners may operate with liquid fuels such as lighter mineral oils or solid fuel particles such as coal dust.
  • the casing 17, which encloses the ame may be dispensed with if measures are adopted to protect the surrounding parts from over-temperature due to heat radiation.
  • the fans may be of axial or semi-axial type.
  • the combustion air may be mixed wih the fuel either in advance of the burner as shown, or may be mixed directly in the burner.
  • An apparatus for drying material comprising a plenum chamber having a wall confronting the material and means in said wall for directing drying medium from said chamber onto the material, fan means operable to discharge gaseous medium into said chamber, suction means leading from said material to said fan means to cycle gaseous medium from said material through said fan and said plenum chamber and back to said material, and means to heat said cycling medium, the improvement wherein said heating means comprises a plurality of burners mounted in said plenum chamber, and means to supply combustion fuel to said burners, said burners being mounted to direct hot flue gases into said plenum chamber to mix with the cycling medium therein whereby said drying medium includes flue gases, and said fan means comprises separate fan means for each of said burners.
  • apparatus for drying endless web material cornprising a heated rotating cylindrical surface supporting said web, a hood surrounding said surface and mounting a plenum chamber having a wall confronting the material and means in said wall for directing drying medium from said chamber onto the material, fan means mounted on said hood operable to discharge gaseous medium into said chamber, suction means mounted on said hood leading from said material to said fan means to cycle gaseous medium from said material through said fan and said plenum chamber and back to said material, at least one burner mounted in said plenum chamber to heat said cycling medium, and means to supply combusion fuel to said burner, said burner being mounted to direct hot flue gases into said plenum chamber to mix with the cycling medium therein whereby said drying medium includes ue gases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US580699A 1965-09-23 1966-09-20 Drying apparatus Expired - Lifetime US3377056A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12334/65A SE342273B (de) 1965-09-23 1965-09-23

Publications (1)

Publication Number Publication Date
US3377056A true US3377056A (en) 1968-04-09

Family

ID=20295564

Family Applications (1)

Application Number Title Priority Date Filing Date
US580699A Expired - Lifetime US3377056A (en) 1965-09-23 1966-09-20 Drying apparatus

Country Status (13)

Country Link
US (1) US3377056A (de)
JP (1) JPS494004B1 (de)
AT (1) AT280762B (de)
BE (1) BE686781A (de)
CH (1) CH457284A (de)
DE (1) DE1604789B1 (de)
DK (1) DK123423C (de)
ES (1) ES331113A1 (de)
FI (1) FI51518C (de)
GB (1) GB1153189A (de)
NL (1) NL6613480A (de)
NO (1) NO132733C (de)
SE (1) SE342273B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911863A (en) * 1972-09-23 1975-10-14 Agfa Gevaert Ag Test installation for single layer or multiple layer coating and drying of sheets of paper or film
US3984197A (en) * 1972-03-25 1976-10-05 Hoechst Aktiengesellschaft Device for the wet treatment and drying of textile material
US3984198A (en) * 1972-02-23 1976-10-05 Hoechst Aktiengesellschaft Device for the impregnation and drying of textile material
US3985498A (en) * 1972-06-21 1976-10-12 Hoechst Aktiengesellschaft Process and device for drying chemical products
US4064637A (en) * 1975-03-19 1977-12-27 Ab Svenska Flaktfabriken Cylinder dryer for paper machines
US4168580A (en) * 1972-06-02 1979-09-25 Maschinenfabrik Andritz Actiengesellschaft Drying installation for treating webs of material
US4523390A (en) * 1982-12-13 1985-06-18 Aer-Overly Corporation Peripheral exhaust system for high velocity dryer
US5383288A (en) * 1992-03-02 1995-01-24 Valmet Paper Machinery Inc. Method and device for drying paper
US5416979A (en) * 1994-04-11 1995-05-23 James River Paper Company, Inc. Paper web dryer and paper moisture profiling system
WO1995027877A1 (en) * 1994-04-08 1995-10-19 James River Paper Company, Inc. System for modifying the moisture profile of a paper web
US5632616A (en) * 1994-11-28 1997-05-27 Cadence Environmental Energy, Inc. Method and apparatus for injecting air into long cement kilns
US5784804A (en) * 1996-03-25 1998-07-28 Asea Brown Boveri, Inc. Yankee hood with integral air heating system
US6079115A (en) * 1997-09-24 2000-06-27 Asea Brown Boveri, Inc. High temperature Yankee hood
US6094838A (en) * 1997-05-28 2000-08-01 Asea Brown Boveri Inc. Curl and profile correction with high velocity hoods
US6631566B2 (en) 2000-09-18 2003-10-14 Kimberly-Clark Worldwide, Inc. Method of drying a web
US20070193060A1 (en) * 2004-03-02 2007-08-23 Nv Bekaert Sa Infrared drier installation for passing web
US20080034606A1 (en) * 2006-05-03 2008-02-14 Georgia-Pacific Consumer Products Lp Energy-Efficient Yankee Dryer Hood System
US20080256818A1 (en) * 2004-03-02 2008-10-23 Nv Bekaert Sa Drier Installation for Drying Web
CN100434272C (zh) * 2003-10-27 2008-11-19 海德堡印刷机械股份公司 具有一个干燥器的页张印刷机
US20160214405A1 (en) * 2013-08-29 2016-07-28 Hewlett-Packard Development Company, L.P. Variable humidity drying

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008330A1 (de) * 1980-03-05 1981-09-17 Karl Schmidt Gmbh, 7107 Neckarsulm Fluessigkeitsgekuehlter kolben fuer brennkraftmaschinen
JPS57179354A (en) * 1981-04-28 1982-11-04 Mitsubishi Heavy Ind Ltd Piston for use in reciprocating engine
JPS57191847U (de) * 1981-05-30 1982-12-04
FI80102C (fi) * 1988-07-01 1990-04-10 Tampella Oy Ab Foerfarande och anordning foer torkning av en fiberbana.
DE19717187A1 (de) * 1997-04-24 1998-10-29 Pagendarm Technologie Gmbh Vorrichtung zur Behandlung, insbesondere Trocknung von Materialbahnen
DE19752562A1 (de) * 1997-09-29 1999-04-01 Voith Sulzer Papiertech Patent Maschine zur Herstellung oder Bearbeitung einer Materialbahn
JP6555369B2 (ja) * 2018-02-13 2019-08-07 王子ホールディングス株式会社 熱風乾燥装置及びそれを用いた薄葉紙の製造方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218282A (en) * 1938-05-04 1940-10-15 Curtis Publishing Company Apparatus for printing
US2268986A (en) * 1938-05-03 1942-01-06 Interchem Corp Method and apparatus for drying printing ink
US2268988A (en) * 1939-08-08 1942-01-06 Interchem Corp Method and apparatus for drying printing ink
US2297314A (en) * 1939-03-04 1942-09-29 Offen Bernard Drying apparatus
US2471802A (en) * 1945-11-16 1949-05-31 Harold J Walter Apparatus for heat-treating air-pervious strip material
US2473629A (en) * 1944-11-16 1949-06-21 Bernard R Andrews Drying apparatus
US2604313A (en) * 1949-08-01 1952-07-22 Frederick W Grantham Drier
US2731732A (en) * 1953-05-19 1956-01-24 Crown Zellerbach Corp Apparatus and method for setting and drying moisture settable ink
US2985210A (en) * 1958-01-20 1961-05-23 Genevieve I Magnuson Treating apparatus for fruit and vegetable articles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR929390A (fr) * 1946-05-23 1947-12-24 Sécheuse à tambour
US2499141A (en) * 1947-12-09 1950-02-28 Fair Lawn Finishing Company Heat-treatment of webs of textile materials

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2268986A (en) * 1938-05-03 1942-01-06 Interchem Corp Method and apparatus for drying printing ink
US2218282A (en) * 1938-05-04 1940-10-15 Curtis Publishing Company Apparatus for printing
US2297314A (en) * 1939-03-04 1942-09-29 Offen Bernard Drying apparatus
US2268988A (en) * 1939-08-08 1942-01-06 Interchem Corp Method and apparatus for drying printing ink
US2473629A (en) * 1944-11-16 1949-06-21 Bernard R Andrews Drying apparatus
US2471802A (en) * 1945-11-16 1949-05-31 Harold J Walter Apparatus for heat-treating air-pervious strip material
US2604313A (en) * 1949-08-01 1952-07-22 Frederick W Grantham Drier
US2731732A (en) * 1953-05-19 1956-01-24 Crown Zellerbach Corp Apparatus and method for setting and drying moisture settable ink
US2985210A (en) * 1958-01-20 1961-05-23 Genevieve I Magnuson Treating apparatus for fruit and vegetable articles

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984198A (en) * 1972-02-23 1976-10-05 Hoechst Aktiengesellschaft Device for the impregnation and drying of textile material
US3984197A (en) * 1972-03-25 1976-10-05 Hoechst Aktiengesellschaft Device for the wet treatment and drying of textile material
US4168580A (en) * 1972-06-02 1979-09-25 Maschinenfabrik Andritz Actiengesellschaft Drying installation for treating webs of material
US3985498A (en) * 1972-06-21 1976-10-12 Hoechst Aktiengesellschaft Process and device for drying chemical products
US3911863A (en) * 1972-09-23 1975-10-14 Agfa Gevaert Ag Test installation for single layer or multiple layer coating and drying of sheets of paper or film
US4064637A (en) * 1975-03-19 1977-12-27 Ab Svenska Flaktfabriken Cylinder dryer for paper machines
US4523390A (en) * 1982-12-13 1985-06-18 Aer-Overly Corporation Peripheral exhaust system for high velocity dryer
US5383288A (en) * 1992-03-02 1995-01-24 Valmet Paper Machinery Inc. Method and device for drying paper
WO1995027877A1 (en) * 1994-04-08 1995-10-19 James River Paper Company, Inc. System for modifying the moisture profile of a paper web
US5465504A (en) * 1994-04-08 1995-11-14 James River Paper Company, Inc. System for modifying the moisture profile of a paper web
US5416979A (en) * 1994-04-11 1995-05-23 James River Paper Company, Inc. Paper web dryer and paper moisture profiling system
WO1995027879A1 (en) * 1994-04-11 1995-10-19 James River Paper Company, Inc. Paper web dryer and paper moisture profiling system
US5632616A (en) * 1994-11-28 1997-05-27 Cadence Environmental Energy, Inc. Method and apparatus for injecting air into long cement kilns
US5784804A (en) * 1996-03-25 1998-07-28 Asea Brown Boveri, Inc. Yankee hood with integral air heating system
US6094838A (en) * 1997-05-28 2000-08-01 Asea Brown Boveri Inc. Curl and profile correction with high velocity hoods
US6079115A (en) * 1997-09-24 2000-06-27 Asea Brown Boveri, Inc. High temperature Yankee hood
US6631566B2 (en) 2000-09-18 2003-10-14 Kimberly-Clark Worldwide, Inc. Method of drying a web
US20040010935A1 (en) * 2000-09-18 2004-01-22 Ross Russell F. Method of drying a web
US6977028B2 (en) 2000-09-18 2005-12-20 Kimberly-Clark Worldwide, Inc. Method of drying a web
US20060070259A1 (en) * 2000-09-18 2006-04-06 Ross Russell F Method of drying a web
CN100434272C (zh) * 2003-10-27 2008-11-19 海德堡印刷机械股份公司 具有一个干燥器的页张印刷机
US20080256818A1 (en) * 2004-03-02 2008-10-23 Nv Bekaert Sa Drier Installation for Drying Web
US20070193060A1 (en) * 2004-03-02 2007-08-23 Nv Bekaert Sa Infrared drier installation for passing web
US7918040B2 (en) * 2004-03-02 2011-04-05 Nv Bekaert Sa Drier installation for drying web
US7926200B2 (en) * 2004-03-02 2011-04-19 Nv Bekaert Sa Infrared drier installation for passing web
US20080034606A1 (en) * 2006-05-03 2008-02-14 Georgia-Pacific Consumer Products Lp Energy-Efficient Yankee Dryer Hood System
US7716850B2 (en) * 2006-05-03 2010-05-18 Georgia-Pacific Consumer Products Lp Energy-efficient yankee dryer hood system
US20100192403A1 (en) * 2006-05-03 2010-08-05 Georgia-Pacific Consumer Products Lp Energy-Efficient Yankee Dryer Hood System
US8132338B2 (en) 2006-05-03 2012-03-13 Georgia-Pacific Consumer Products Lp Energy-efficient yankee dryer hood system
US20160214405A1 (en) * 2013-08-29 2016-07-28 Hewlett-Packard Development Company, L.P. Variable humidity drying
US9731515B2 (en) * 2013-08-29 2017-08-15 Hewlett-Packard Development Company, L.P. Variable humidity drying

Also Published As

Publication number Publication date
CH457284A (de) 1968-05-31
NO132733B (de) 1975-09-15
NL6613480A (de) 1967-03-28
BE686781A (de) 1967-02-15
FI51518B (de) 1976-09-30
DK123423C (da) 1972-11-06
FI51518C (fi) 1977-01-10
NO132733C (de) 1975-12-29
SE342273B (de) 1972-01-31
DK123423B (de) 1972-06-19
ES331113A1 (es) 1967-07-01
AT280762B (de) 1970-04-27
DE1604789B1 (de) 1970-06-04
JPS494004B1 (de) 1974-01-30
GB1153189A (en) 1969-05-29

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