WO2007045606A1 - Rotary dryer for leaf, strip or shredded tobacco - Google Patents

Rotary dryer for leaf, strip or shredded tobacco Download PDF

Info

Publication number
WO2007045606A1
WO2007045606A1 PCT/EP2006/067362 EP2006067362W WO2007045606A1 WO 2007045606 A1 WO2007045606 A1 WO 2007045606A1 EP 2006067362 W EP2006067362 W EP 2006067362W WO 2007045606 A1 WO2007045606 A1 WO 2007045606A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
tobacco
dryer
endpieces
hot fluid
Prior art date
Application number
PCT/EP2006/067362
Other languages
English (en)
French (fr)
Inventor
Mario Martin
Original Assignee
Comas - Costruzioni Macchine Speciali - S.P.A.
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 Comas - Costruzioni Macchine Speciali - S.P.A. filed Critical Comas - Costruzioni Macchine Speciali - S.P.A.
Priority to PL06807227T priority Critical patent/PL1983850T3/pl
Priority to AT06807227T priority patent/ATE491353T1/de
Priority to EP06807227A priority patent/EP1983850B1/de
Priority to DE602006019001T priority patent/DE602006019001D1/de
Publication of WO2007045606A1 publication Critical patent/WO2007045606A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/04—Humidifying or drying tobacco bunches or cut tobacco

Definitions

  • the present invention relates to a rotary dryer for leaf, strip or shredded tobacco.
  • Rotary dryers for shredded tobacco comprise a cylindrical chamber closed at its ends by two endpieces, to which a hot air entry conduit and a hot air exit conduit are connected respectively.
  • Two systems, for feeding the tobacco to be dried and for discharging the dried tobacco respectively, are also connected to said endpieces.
  • the inner surface of the cylindrical chamber comprises a plurality of longitudinal fins.
  • the shredded tobacco to be dried is fed into the drying chamber via the feed system.
  • it is heated by the chamber wall, itself heated by a vapour jacket or by direct flame, and at the same time is subjected to the flow of the hot drying air, which can circulate within the chamber in co-current or counter-current flow, depending on the direction in which the fluid is fed thereinto.
  • a drawback of said dryer is that the efficiency of the drying process is fairly low, in that the hot air flow has to pass through the entire drying chamber, and for evident practical reasons cannot have too high a velocity. Consequently the flow rate of the drying air is modest and the process efficiency is likewise modest.
  • Figure 1 is a longitudinal schematic section through a rotary dryer according to the invention
  • Figure 2 shows a variant thereof
  • FIG 3 is a partial cross-section on the line Ill-Ill of Figure 1.
  • the tobacco dryer of the invention comprises a cylindrical chamber 2 closed at its ends by two endpieces 4, 4' to which two exit conduits 6, 6' are connected for a hot drying fluid, which can be hot air or hot air mixed with hot vapour and/or steam.
  • a loading system 8 is also connected to the endpiece 4 to feed the tobacco to be treated, which can be tobacco in leaf, shredded or strip form, into the chamber 2, a discharge system 10 for the treated tobacco being connected to the endpiece 4'.
  • the drying chamber 2 is provided with traditional means for its rotation, not shown in the drawings, and is also provided along its entire length with a plurality of longitudinal fins 12 welded to its inner lateral surface and projecting towards the chamber interior. They are of slightly concave shape, with their concavity facing the direction of rotation of the chamber 2, in order to better mix the tobacco within said chamber during its rotation.
  • a pipe 14 is provided extending from one endpiece 4 to the other 4' and prolonging to the outside via a conduit 16 for entry of the hot drying fluid.
  • This pipe is provided along its entire lateral surface with a plurality of apertures 18 to which tubes substantially perpendicular to the cylindrical surface of the pipe are applied.
  • the pipe 14 can be rigid with the cylinder 2 and rotate with it, or be independent of the cylinder and remain at rest during its rotation, or rotate at a different speed.
  • the cross-section of the hot fluid infeed conduit 16 is greater than the sum of the cross-sections of the apertures 18 of the pipe 14, so that this is able to form a plenum chamber, i.e. is filled with fluid under pressure when working normally.
  • It can consist of a single tubular element or of two coaxial portions 14,
  • the chamber 2 is mounted on adjustable structures (not shown in the drawings), able to maintain the chamber 2 with its axis horizontal or inclined by the desired angle.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Manufacture Of Tobacco Products (AREA)
PCT/EP2006/067362 2005-10-17 2006-10-12 Rotary dryer for leaf, strip or shredded tobacco WO2007045606A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL06807227T PL1983850T3 (pl) 2005-10-17 2006-10-12 Obrotowa suszarka do liści, pasków lub rozdrobnionego tytoniu
AT06807227T ATE491353T1 (de) 2005-10-17 2006-10-12 Trommeltrockner für tabakblätter, tabakstreifen oder tabakschnitzel
EP06807227A EP1983850B1 (de) 2005-10-17 2006-10-12 Trommeltrockner für tabakblätter, tabakstreifen oder tabakschnitzel
DE602006019001T DE602006019001D1 (de) 2005-10-17 2006-10-12 Trommeltrockner für tabakblätter, tabakstreifen oder tabakschnitzel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000051A ITVE20050051A1 (it) 2005-10-17 2005-10-17 Essicatore rotante per tabacco in foglia, in strips e trinciato.-
ITVE2005A000051 2005-10-17

Publications (1)

Publication Number Publication Date
WO2007045606A1 true WO2007045606A1 (en) 2007-04-26

Family

ID=37687449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/067362 WO2007045606A1 (en) 2005-10-17 2006-10-12 Rotary dryer for leaf, strip or shredded tobacco

Country Status (6)

Country Link
EP (1) EP1983850B1 (de)
AT (1) ATE491353T1 (de)
DE (1) DE602006019001D1 (de)
IT (1) ITVE20050051A1 (de)
PL (1) PL1983850T3 (de)
WO (1) WO2007045606A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090158A1 (it) * 2009-08-06 2009-11-05 Magg Consulting Srl Essiccatore rotante per tabacco
CN102871210A (zh) * 2012-09-25 2013-01-16 河南中烟工业有限责任公司 汽螺旋回潮机
CN102028304B (zh) * 2009-09-27 2013-05-22 湖北中烟工业有限责任公司 保温筒和蒸汽薄板筒合用的二级式烘丝机
WO2015098743A1 (ja) 2013-12-26 2015-07-02 日本たばこ産業株式会社 たばこ材料の製造方法及びその製造方法により製造されたたばこ材料
EP2679103A3 (de) * 2012-06-26 2016-10-12 Hauni Maschinenbau GmbH Trommeltrockner zum Trocknen von Tabak, und entsprechendes Trocknungsverfahren

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436139A1 (de) 1973-07-26 1975-02-06 Dickinson Eng Ltd W H Konditioniervorrichtung
US3905123A (en) * 1973-10-15 1975-09-16 Industrial Nucleonics Corp Method and apparatus for controlling a tobacco dryer
US4757830A (en) * 1985-09-19 1988-07-19 W. H. Dickinson Engineering Limited Tobacco conditioner
WO1989008407A1 (en) * 1988-03-19 1989-09-21 Gbe International Plc Rotary cylinder drier
US4887619A (en) * 1986-11-28 1989-12-19 R. J. Reynolds Tobacco Company Method and apparatus for treating particulate material
WO2001060186A1 (en) * 2000-02-17 2001-08-23 Philip Morris Products Inc. Humidification cylinder and method of humidifying material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436139A1 (de) 1973-07-26 1975-02-06 Dickinson Eng Ltd W H Konditioniervorrichtung
US3905123A (en) * 1973-10-15 1975-09-16 Industrial Nucleonics Corp Method and apparatus for controlling a tobacco dryer
US4757830A (en) * 1985-09-19 1988-07-19 W. H. Dickinson Engineering Limited Tobacco conditioner
US4887619A (en) * 1986-11-28 1989-12-19 R. J. Reynolds Tobacco Company Method and apparatus for treating particulate material
WO1989008407A1 (en) * 1988-03-19 1989-09-21 Gbe International Plc Rotary cylinder drier
WO2001060186A1 (en) * 2000-02-17 2001-08-23 Philip Morris Products Inc. Humidification cylinder and method of humidifying material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090158A1 (it) * 2009-08-06 2009-11-05 Magg Consulting Srl Essiccatore rotante per tabacco
CN102028304B (zh) * 2009-09-27 2013-05-22 湖北中烟工业有限责任公司 保温筒和蒸汽薄板筒合用的二级式烘丝机
EP2679103A3 (de) * 2012-06-26 2016-10-12 Hauni Maschinenbau GmbH Trommeltrockner zum Trocknen von Tabak, und entsprechendes Trocknungsverfahren
CN102871210A (zh) * 2012-09-25 2013-01-16 河南中烟工业有限责任公司 汽螺旋回潮机
CN102871210B (zh) * 2012-09-25 2015-03-11 河南中烟工业有限责任公司 汽螺旋回潮机
WO2015098743A1 (ja) 2013-12-26 2015-07-02 日本たばこ産業株式会社 たばこ材料の製造方法及びその製造方法により製造されたたばこ材料

Also Published As

Publication number Publication date
EP1983850B1 (de) 2010-12-15
EP1983850A1 (de) 2008-10-29
ATE491353T1 (de) 2011-01-15
ITVE20050051A1 (it) 2007-04-18
PL1983850T3 (pl) 2011-05-31
DE602006019001D1 (de) 2011-01-27

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