EP0546986B1 - Expansion et sèchage du tabac - Google Patents

Expansion et sèchage du tabac Download PDF

Info

Publication number
EP0546986B1
EP0546986B1 EP92810532A EP92810532A EP0546986B1 EP 0546986 B1 EP0546986 B1 EP 0546986B1 EP 92810532 A EP92810532 A EP 92810532A EP 92810532 A EP92810532 A EP 92810532A EP 0546986 B1 EP0546986 B1 EP 0546986B1
Authority
EP
European Patent Office
Prior art keywords
tobacco
channel
flow
vapor
section
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
EP92810532A
Other languages
German (de)
English (en)
Other versions
EP0546986A1 (fr
Inventor
Laszlo Dr. Egri
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0546986A1 publication Critical patent/EP0546986A1/fr
Application granted granted Critical
Publication of EP0546986B1 publication Critical patent/EP0546986B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • A24B3/182—Puffing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S131/00—Tobacco
    • Y10S131/903—Fixing the product after puffing

Definitions

  • DE-PS 30 37 885 proposes deflecting devices which are offset opposite one another in a pneumatic transport pipe, in order thereby to change the direction of movement and the relative speed of the tobacco rib parts with respect to the gaseous heating and transport medium several times.
  • these deflection devices lead to deposits of tobacco components on the walls of the pneumatic tube.
  • DE-OS 36 19 816 it is proposed that the hot tobacco should be separated from the steam or gas by means of a separator consisting of a sieve, which extends at an angle of 135 ° to 155 ° to the axis of the transport line at the downstream end thereof.
  • a separator consisting of a sieve, which extends at an angle of 135 ° to 155 ° to the axis of the transport line at the downstream end thereof.
  • An analogous proposal is described in DE-OS 36 19 815, with the difference that the tobacco drying device consists of two gas flow lines with two separators which are connected to one another, and each porous separator arranged at an oblique angle to one another should remove the tobacco from the gas separate. With this system, the tobacco should be accelerated twice by the gaseous medium.
  • the tobacco flowing at an oblique angle at high speed in the ascending direction can precipitate on the surface of the gas-permeable separators arranged at an angle to the flow direction or block it.
  • Flow changes in a pneumatic hot steam tobacco transport channel system lead to undesirable deposits in moist tobacco, especially if the tobacco moisture content is above 35%. These deposits occur to the greatest extent where the flow change is greatest, e.g. in the form of a pneumatic transport system. This is also the case with the method described in DE-OS 28 41 874. According to a later patent specification of the same method, the deposit should be reduced by cooling or condensation on the sheet.
  • DE-PS 38 39 529 describes a method and device for the expansion of cut tobacco material, according to which a tobacco carrier gas stream is encased by a separately supplied gas stream, thereby reducing the relative speed to increase between the tobacco material and the gas flow several times, but this is insufficient due to the coating of the tobacco material caused above by the carrier gas and is not effected over the entire channel cross section.
  • the additional gas stream is supplied via a plurality of slots which are formed at an acute angle as an opening in the channel jacket in the direction of flow.
  • a tobacco gas mixture flows from a horizontal transport channel through a narrow nozzle at very high speed into a dryer tube provided with bends.
  • the flow rate of the hot gas in the drying tube must be somewhat higher than that of the tobacco gas mixture emerging from the nozzle. This requires an uneconomically high amount of hot gas and involves intensive mixing or dilution of the tobacco with the gas.
  • the tobacco should be accelerated in the expansion zone and transported by an approximately constant speed, then decelerated in a divergent flow under pressure increase.
  • This design can be achieved by temporarily narrowing the channel cross-section, as in Fig.1 of this document can be guaranteed.
  • Speed acceleration and reduction of a tobacco-vapor mixture is described in the previously cited DE-OS 26 37 124 by using a venturi nozzle and in "PS dispersion dryer" cited in DE-PS 22 53 882, but these statements can be made due to the limited possibility of tapering Canal cross section and mechanical abrasion of the tobacco through the channel wall are not considered to be optimal.
  • the aim of the invention is to improve the expansion effect and the drying and to do this without the use of gases or liquefied gases under excess pressure only by using water vapor and / or air in a simple device in the atmospheric range.
  • FIG. 1 and 2 schematically show two examples of embodiments of devices according to the invention for carrying out the method according to the invention
  • Figure 3 is a section along the line III-III in Figures 1 and 2.
  • Figure 4 is a section along the line IV-IV in Figures 1 and 2.
  • Fig. 5 different views of those in Figs. 1 and 2 used flat nozzles
  • Fig. 6 shows another arrangement of the flat nozzles and the metering of the tobacco material.
  • the tobacco is supplied from a metering device 1 into a channel section with the same diameter after loosening or separating the tobacco fibers, which can be done by using known vibrators and / or needle rollers.
  • This is of particular advantage in the case of sliced leaf tobacco known as "lamina”. If you want to put the tobacco in a steam jet and this jet emerges from a nozzle at high speed, the difficulty can arise that the tobacco penetrates into the barely unevenly or not at all despite the suction effect of the jet.
  • the tobacco from the vapor / gas jet surface carrying it is not touched mixed with the channel wall in the beam, but at the meeting point of the two directed beams. This significantly reduces the mechanical abrasion or the risk of damage to the tobacco particles and exposes the tobacco to an additional acceleration.
  • the tobacco can be metered into a vertical channel section 15.
  • the tobacco is preferably metered through the upper opening of a vertical rectangular channel section 15, the tobacco falling onto the laterally widening surfaces of vapor-containing "carpets" 4,4 'which preferably flow out from opposite openings of preferably one flat nozzle 2, 2' each is accelerated.
  • the tobacco is additionally accelerated at the intersection of the two flat jets 3, 3 ', and then its flow rate is slowed down by withdrawing part of the transporting steam. This takes place on a section of the transport channel, which is designed as a gas-permeable channel section 5, through which part of the steam can flow out.
  • the steam can be removed through the jacket 6 surrounding this channel section 5 or preferably returned to the system after overheating.
  • the reduction in the flow rate due to steam extraction can then additionally be effected by widening the channel cross section.
  • the tobacco-steam and / or hot gas mixture emerges from the vertical channel section 16 at a speed of 3 m / sec. up to 1Om / sec. and is in a horizontal channel section 7 by means of a separate hot gas stream 13 at a speed of 11 m / sec. up to 60 m / sec. deflected by cross flow.
  • This flow containing tobacco can be diverted from the horizontal channel section 7 into a vertical channel section 8 by a further redirection by means of a separate gas stream 14 at a higher speed than that used in the horizontal channel section 7 and thereby accelerated again.
  • the tobacco can also be transported without a cross flow over an arc in an extended vertical channel section 8.
  • the vertical channel section 8 is surrounded by a tube 9 with an enlarged cross section to form a tobacco separation zone. After exiting the channel section 8, the tobacco is deflected into the interior 17 surrounding it by the air resistance and leaves this interior 17 after expansion and drying by gravitation downwards.
  • the tobacco is dosed into a horizontal through a vertical channel.
  • the two flat jets 3, 3 '' must flow out of openings which are arranged on opposite sides but are offset from one another.
  • the different distance of the two flat jets 3.3 ′′ from the respective nozzle openings to their intersection would cause the two flat jets to have an uneven speed.
  • the diameter of the individual nozzle openings and the vapor pressures in front of the nozzles would have to be adapted to these requirements.
  • the deflection according to the invention by cross-flow of the jet containing the tobacco and the transport medium together with the increase in flow speed according to the invention when tobacco is fed and during the deceleration before the deflection, the expansion and drying effect could be significantly improved compared to the previously known solutions.
  • the deflection from horizontal to vertical or from vertical to horizontal direction can take place.
  • a triple redirection can also be used. For example, if the tobacco transport medium mixture is diverted from vertical to horizontal and from there again to the vertical direction.
  • auxiliary jet 14 When the gas-solid mixture flowing out of a horizontal channel section 7 is deflected upward by an auxiliary jet 14, the auxiliary jet has to overcome the resistance caused by the weight of the tobacco (gravitation), as a result of which it is deflected before the horizontal jet is deflected in the connecting space between the horizontal and vertical channels is subjected to a congestion effect and then to a greater pressure drop.
  • the relaxation time i.e. the time it takes for the tobacco particles to adjust to the new flow direction is also greater in this case, as a result of which the effect of the heat transfer is additionally improved.
  • the use of a gas-permeable channel section 5 in the horizontal channel section 7 enables a part to be removed from the transport medium, which can be returned to the system, and at the same time reduces the flow velocity of the jet. This not only prevents an adverse impact of the solid on the wall of the vertical channel section 8, it also achieves an economic advantage.
  • the amount of gas and / or steam required for the additional acceleration can namely be reduced and the diameter of the horizontal and vertical channel sections can be kept approximately the same.
  • the section length and the porosity of this channel section is selected such that, for a given tobacco gas flow rate, there is no lateral deviation of the flow bundle and, accordingly, no deposition or blockage on the porous surfaces of this porous channel section 5.
  • the tobacco-steam-weight ratio is between 1: 0, 7 and 1: 4.
  • the weight ratio between the first tobacco-transporting treatment medium 4,4 'and the deflecting treatment medium 13 or 14 in the deflection zone is between 1: 1 and 1: 2.
  • the tobacco preferably arrives after the corresponding deflection from the channel section 8 into a pipe or a "tower” 9 with a larger diameter than that of the channel section 8.
  • the cross section at the outlet end of the Channel section 8 are expanded.
  • the free space above the centrally arranged channel section 8 is dimensioned such that the tobacco exiting into the wider pipe 9 is slowed down by the air resistance and its direction of flow changes due to its gravity.
  • the tobacco will fall freely between the outer channel wall 8 and the inner so-called "tower” wall 9 after changing its flow direction by 180 ° onto a conveyor belt and transported away with the desired degree of dryness.
  • the tobacco falling down in the tube between the outer wall of the relatively short vertical channel section 8 and the inner wall of the tube 9, which surrounds it at a distance, can be exposed to an extended residence time by an additional dry gas, preferably hot gas, which slowly flows in from bottom to top.
  • an additional dry gas preferably hot gas
  • the inflow rate of a separate gas should be the rate of 1 m / sec. if possible do not exceed.
  • This counterflow should be set in such a way that there is no material jam and the tobacco can leave the drying tower by gravitation.
  • two treatment units in particular two so-called tower systems, in which the drying mainly takes place, can be connected in succession.
  • the device consists of a tobacco feed channel, from which the tobacco is metered and loosened through a lock 1 and preferably subsequently by a needle roller in a vertical, rectangular transport channel section 15.
  • a wide flat nozzle 2, 2 ' is arranged directly after the metering device, from which two flat, carpet-like, laterally widespread flat jets 3, 3' consisting of steam and / or hot gas flow downward and intersect at an acute angle in the direction of tobacco flow.
  • the tobacco falls into the interior 4, which is formed by the two flat jets 3, 3 'consisting of steam or hot gas, onto the laterally widening flat jets which accelerate and transport the tobacco in a flash.
  • gas-permeable channel section 5 can be provided in the further course, preferably in the round channel section 16, through which part of the steam escapes into a double jacket 6 and is returned to the system. (Not shown in the drawing).
  • the channel can be extended in the horizontal direction 7 by an arch (FIG. 1).
  • a better or more effective solution is if the vertical channel section opens directly into a horizontal pipe 7 (see FIG. 2) and the tobacco is exposed to separate hot gas for deflection by cross flow.
  • the horizontal channel 7 can also be provided with a gas-permeable channel section 5, analogously to that described above.
  • the tobacco can be redirected again into a vertical channel section 8 and, in a wider pipe 9 surrounding it, a so-called “tower”, can change its direction of flow through the air resistance or downward due to gravity.
  • the steam-containing hot gas flowing out upwards by means of the suction fan 11 is separated by the sieve 10 ′ from the tobacco falling downward by gravity and leaves the space between the outer wall of the vertical channel section 8 and the expanded tube 9, or "tower" down through the opening 12.
  • Sliced Burley tobacco with a moisture content of 27% is arranged after loosening with a needle roller through a lock 1 in the vertical, rectangular duct 15 of the duct walls in an opposing position, two flat jet nozzles 2, from which steam with a temperature of 220-250 ° C. flows in.
  • the tobacco is diverted upward from the horizontal channel section 7 by means of an auxiliary gas stream 14 at a temperature of 140 ° C - 180 ° C.
  • the tobacco leaves the outlet opening 12 of the "tower” dried and expands downward.
  • the temperature and flow rate of the gas flowing up the channel is regulated so that the tobacco leaves the "tower” with a moisture content of 11.5%.
  • the untreated tobacco and the expanded tobacco are adjusted to 12% moisture after conditioning.
  • the filling capacity of the tobacco was measured in a Brogwaldt densimeter (20 g tobacco was loaded in a cylinder with 6 cm O with a weight of 3 kg for 30 seconds and the height of the tobacco column was measured after the pressure was released. Height of the tobacco column Untreated Expanded Filling capacity increase 33.83mm 50.80mm 50%
  • Virginia cut tobacco was treated as in Example 1. Height of the tobacco column Untreated Expanded Filling capacity increase 28.93 mm 57.47mm 1OO%

Landscapes

  • Manufacture Of Tobacco Products (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Drying Of Solid Materials (AREA)

Claims (12)

  1. Procédé pour l'expansion et le séchage du tabac au moyen de vapeur et/ou d'un gaz chaud, dans lequel on alimente de manière dosée le tabac humide dans un espace interne (4) qui est délimité par au moins deux jets laminaires (3, 3') constitués par de la vapeur et/ou du gaz chaud, dans lequel ces jets laminaires sont guidés l'un dans l'autre en formant un angle aigu et en l'occurrence entourent et accélèrent brusquement le tabac à traiter; ensuite, on diminue la vitesse de transport au moyen d'un échappement de vapeur et ensuite, on achemine le tabac expansé au fixage et séchage.
  2. Procédé selon la revendication 1, caractérisé en ce que la vitesse d'écoulement du tabac est accélérée par les jets laminaires éventuellement à l'aide d'un changement de direction au moyen d'un écoulement transversal et elle est au moins une fois diminuée par l'échappement de vapeur hors d'une section (5) du canal de transport.
  3. Procédé selon les revendications 1-2, caractérisé en ce que les jets laminaires (3, 3') pénètrent par écoulement dans le canal de transport à partir de tuyères à jets laminaires (2, 2') orientées par rapport à l'axe du canal en formant un angle de 5-60° et disposées à l'intérieur ou à l'extérieur de zones de parois de canal opposées.
  4. Procédé selon les revendications 1-3, caractérisé en ce que l'alimentation en tabac dans l'espace interne, respectivement sur les jets laminaires qui le délimitent en forme de trapèze, a lieu sur la surface de ces derniers s'élargissant latéralement, et le tabac, ainsi que le milieu contenant de la vapeur et/ou du gaz chaud sont transportés dans un canal au moins partiellement rectangulaire.
  5. Procédé selon les revendications 1-4, caractérisé en ce que, pour diminuer la vitesse d'écoulement, on procède à un échappement de vapeur à travers au moins une section (6) du canal (7) perméable au gaz.
  6. Procédé selon les revendications 1-5, caractérisé en ce que l'écoulement transversal du tabac dans un système de canal par un changement du sens d'écoulement en passant de la direction verticale à la direction horizontale et de là, dans une section de canal vertical (8) reliée à cette dernière, vers le haut, a lieu respectivement à travers un milieu séparé contenant du gaz chaud.
  7. Procédé selon l'une ou plusieurs des revendications ci-dessus, caractérisé en ce que la vitesse d'écoulement des jets laminaires qui pénètrent par écoulement dans le canal à partir de ses côtés opposés, lors du contact avec le tabac, s'élève entre 100 m/sec et 300 m/sec et, lors de leur entrée à des fins de changement de la direction d'écoulement par écoulement transversal dans une deuxième section de canal (7) reliée à la première section de canal en formant un angle de 90°, s'élève entre 3 m/sec et 10 m/sec.
  8. Procédé selon l'une ou plusieurs des revendications ci-dessus, caractérisé en ce que la vitesse d'écoulement de la vapeur et/ou du courant de gaz chaud contenant le tabac, après le changement de sens au moyen d'un courant séparé (13) contenant du gaz dans la deuxième section de canal (7), se situe entre 10 m/sec et 60 m/sec.
  9. Procédé selon l'une ou plusieurs des revendications ci-dessus, caractérisé en ce que le mélange de tabac-vapeur et/ou gaz est soumis à plusieurs changements de directions, la dernière modification du sens d'écoulement se faisant depuis une section de canal horizontal jusque dans une section de canal vertical (8) reliée à cette dernière, au moyen d'un courant de gaz introduit en outre, le canal vertical (8) aboutissant vers le haut dans un tube (9) à diamètre élargi et le tabac sortant de la section de canal vertical (8) s'évacuant de cette dernière (8) et du tube (9) qui l'entoure, par gravitation vers le bas.
  10. Procédé selon l'une ou plusieurs des revendications ci-dessus, caractérisé en ce que le milieu de transport constitué par de la vapeur et/ou du gaz chaud présente, après réception du tabac, une température entre 180° et 300°C.
  11. Procédé selon l'une ou plusieurs des revendications ci-dessus, caractérisé en ce que le tabac broyé est constitué par des nervures et/ou des stratifiés de tabac ou encore des feuilles de tabac broyées et découpées.
  12. Dispositif pour la mise en oeuvre du procédé selon les revendications 1-10, dans lequel le dispositif est constitué au moins par une alimentation dosée de tabac (1), par une section de canal d'expansion rectangulaire (15) qui lui est liée, s'étendant verticalement vers le bas, dans lequel, à l'aide de tuyères planes (2, 2') disposées en opposition mutuelle à l'intérieur ou à l'extérieur des parois de canal, est introduit par écoulement un jet laminaire (3, 3') en forme de tapis, contenant de la vapeur, et les deux jets laminaires se croisant en formant un angle aigu récupèrent le tabac dans l'espace interne (4) délimité par eux, le canal de transport se prolonge en passant de la direction verticale à la direction horizontale (7), la section de canal vertical et/ou horizontal étant munie d'une section (5) perméable au gaz, la section de canal horizontal (7) aboutit dans une section de canal vertical séparée (8) qui est entourée par un tube (9) présentant une section interne supérieure, et à partir de cette dernière, le tabac s'évacue à l'état expansé et séché vers le bas (12), le milieu contenant de la vapeur et/ou du gaz chaud s'évacuant vers le haut à travers un filtre (10) à l'aide d'une filtration sous vide (11).
EP92810532A 1991-12-09 1992-07-13 Expansion et sèchage du tabac Expired - Lifetime EP0546986B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3608/91A CH683226A5 (de) 1991-12-09 1991-12-09 Expandieren und Trocknen von Tabak.
CH3608/91 1991-12-09

Publications (2)

Publication Number Publication Date
EP0546986A1 EP0546986A1 (fr) 1993-06-16
EP0546986B1 true EP0546986B1 (fr) 1996-04-17

Family

ID=4259652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810532A Expired - Lifetime EP0546986B1 (fr) 1991-12-09 1992-07-13 Expansion et sèchage du tabac

Country Status (14)

Country Link
US (1) US5307822A (fr)
EP (1) EP0546986B1 (fr)
JP (1) JPH05236927A (fr)
KR (1) KR930011913A (fr)
AT (1) ATE136741T1 (fr)
BR (1) BR9204959A (fr)
CA (1) CA2084388A1 (fr)
CH (1) CH683226A5 (fr)
DE (2) DE59206040D1 (fr)
DK (1) DK0546986T3 (fr)
ES (1) ES2089473T3 (fr)
GR (1) GR3020552T3 (fr)
HU (2) HU215652B (fr)
ZA (1) ZA929353B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5560376A (en) * 1995-01-05 1996-10-01 R. J. Reynolds Tobacco Company Method of and apparatus for adjusting the moisture content of a fuel component for a smoking article
GB2323515B (en) * 1997-03-27 1999-02-10 British American Tobacco Co Tobacco dryers
DE19734364A1 (de) 1997-08-08 1999-02-11 Hauni Maschinenbau Ag Verfahren und Vorrichtung zum Aufbringen eines Konditionierungsmediums auf Tabakmaterial
DE19909318C2 (de) * 1999-03-03 2001-06-28 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Expansion von Tabakmaterial
GB9922746D0 (en) 1999-09-24 1999-11-24 Rothmans International Ltd Tobacco processing
US7556047B2 (en) * 2003-03-20 2009-07-07 R.J. Reynolds Tobacco Company Method of expanding tobacco using steam
CN101683179B (zh) * 2008-09-27 2012-05-30 湖北中烟工业有限责任公司 一种松散回潮烟叶的方法及其装置
DE102012200934B3 (de) * 2012-01-23 2013-04-18 Hauni Maschinenbau Ag Stromtrockner und Stromtrocknungsverfahren zum Trocknen eines Tabakmaterials
CN102599622B (zh) * 2012-04-25 2013-11-13 江苏智思机械集团有限公司 高水分烟草物料干燥塔

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790758A (fr) * 1971-11-04 1973-02-15 Philip Morris Inc Procede pour augmenter le volume des tiges de tabac
CA1047352A (fr) * 1975-09-05 1979-01-30 Eugene Glock Methode et materiel pour ameliorer le coefficient de remplissage du tabac dechiquete
US4167191A (en) * 1977-09-27 1979-09-11 Brown & Williamson Tobacco Corporation Tobacco drying process
DE3037885C2 (de) * 1980-10-07 1988-03-03 Tamag Basel AG, 4127 Birsfelden Verfahren zur Volumenvergrößerung von zerkleinerten Tabakrippen und Vorrichtung zur Durchführung des Verfahrens
DE3147846C2 (de) * 1981-09-05 1984-07-19 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Verfahren zur Verbesserung der Füllfähigkeit von Tabakmaterial
DE3136842A1 (de) * 1981-09-16 1983-04-07 Tamag Basel AG, 4127 Birsfelden Verfahren zur volumenvergroesserung (puffing) von tabak und vorrichtung zur durchfuehrung des verfahrens
GB2115677A (en) * 1982-01-08 1983-09-14 Ronald D Rothchild A method for expanding tobacco
DE3315274A1 (de) * 1982-05-11 1983-11-17 Hauni-Werke Körber & Co KG, 2050 Hamburg Verfahren und vorrichtung zum volumenvergroessern von tabak
CH658367A5 (de) * 1982-05-11 1986-11-14 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum volumenvergroessern von tabak.
DE3409908A1 (de) * 1984-03-17 1985-09-26 Korea Ginseng & Tobacco Research Institute, Daejun Verfahren und vorrichtung zum expandieren von tabakblaettern
GB8515217D0 (en) * 1985-06-15 1985-07-17 British American Tobacco Co Treatment of tobacco
DE3710677A1 (de) * 1987-03-31 1988-10-13 Bat Cigarettenfab Gmbh Vorrichtung zum expandieren von zerkleinertem tabakmaterial
GB8712618D0 (en) * 1987-05-28 1987-07-01 British American Tobacco Co Expansion of tobacco
DE3878072D1 (de) * 1987-07-29 1993-03-18 Bat Cigarettenfab Gmbh Abscheider zur trennung von tabak-teilchen aus einem tabak/gas-gemisch.
DE3839529C1 (fr) * 1988-11-23 1990-04-12 Comas S.P.A., Silea, Treviso, It
US5031644A (en) * 1989-12-29 1991-07-16 R. J. Reynolds Tobacco Company Tobacco expansion process and product

Also Published As

Publication number Publication date
ES2089473T3 (es) 1996-10-01
HU215652B (hu) 1999-01-28
KR930011913A (ko) 1993-07-20
DK0546986T3 (da) 1996-08-26
CH683226A5 (de) 1994-02-15
ZA929353B (en) 1993-07-14
EP0546986A1 (fr) 1993-06-16
DE4227008C2 (de) 1993-12-23
DE4227008A1 (de) 1993-07-01
US5307822A (en) 1994-05-03
HUT69611A (en) 1995-09-28
CA2084388A1 (fr) 1993-06-10
DE59206040D1 (de) 1996-05-23
HU9203895D0 (en) 1993-03-29
GR3020552T3 (en) 1996-10-31
JPH05236927A (ja) 1993-09-17
BR9204959A (pt) 1993-06-15
ATE136741T1 (de) 1996-05-15

Similar Documents

Publication Publication Date Title
EP0895721B1 (fr) Procédé et appareil pour l'application d'un agent de conditionnement sur une matière de tabac.
EP0242873B1 (fr) Procédé de traitement du tabac et de matières organiques similaires
CH452405A (de) Vorrichtung zum Ueberziehen einzelner Teilchen
EP0546986B1 (fr) Expansion et sèchage du tabac
WO2004101132A1 (fr) Procede et dispositif pour appliquer des liquides dans un ecoulement solide de dispositif a lit fluidise
WO2007104389A1 (fr) Dispositif de séchage du tabac
EP1452224A1 (fr) Dispositif en forme de tunnel pour traiter une matière particulaire
EP0370489B1 (fr) Procédé et dispositif pour gonfler du tabac coupé et humidifié
DE3105609A1 (de) "vorrichtung zum entwaessern und trocknen von feststoffen, insbesondere von unterwassergranulierten kunststoffen"
DE2427932B2 (de) Flugstromtrockner mit eine diffusorartige engstelle aufweisendem trocknungsrohr
CH660286A5 (de) Anlage und deren verwendung zum trocknen von tabakteilchen.
DE1926485A1 (de) Anlage zur Waermebehandlung von mechanisch entwaessertem Material
DE2627262B2 (de) Vorrichtung zum Trocknen von durch ein strömendes Gas transportierten Feststoffen
DE3446156A1 (de) Verfahren und vorrichtung zum erzeugen von schichten aus trockenem faser- und/oder teilchenmaterial
DE2555553A1 (de) Verfahren zum trocknen nasser partikel und zentrifugentrocknungsanlage
DE3013645A1 (de) Verfahren und vorrichtung fuer die zufuehrung von teilchen in eine wirbelschicht
DE2904121C2 (fr)
DE3316127C2 (de) Verfahren zum Dekatieren, insbesondere zum kontinuierlichen Dekatieren
DE2427355C3 (de) Vorrichtung zum Trocknen von bahnförmigen Materialien
DE3611471C2 (fr)
DE2409843A1 (de) Mehrstufiges trockenverfahren und vorrichtung zu seiner durchfuehrung
CH451882A (de) Vorrichtung zum Behandeln von feinkörnigen, festen Stoffen
DE2947289A1 (de) Vorrichtung zum verteilen eines fluessigkeits-dampfgemisches in einem separator horizontaler bauart
EP0338099A1 (fr) Procédé de séchage et de refroidissement de masses de sucre cristallines humides et installation pour la mise en oeuvre de ce procédé
EP0528227A1 (fr) Dispositif pour introduire des particules de tabac dans un courant de sèchage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE DK ES FR GB GR IT LU NL PT SE

17P Request for examination filed

Effective date: 19931028

17Q First examination report despatched

Effective date: 19950515

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE DK ES FR GB GR IT LU NL PT SE

REF Corresponds to:

Ref document number: 136741

Country of ref document: AT

Date of ref document: 19960515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59206040

Country of ref document: DE

Date of ref document: 19960523

ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA SOCIETA' SEMPLICE

REG Reference to a national code

Ref country code: ES

Ref legal event code: BA2A

Ref document number: 2089473

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Effective date: 19960717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19960731

Year of fee payment: 5

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960716

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3020552

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2089473

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2089473

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19980709

Year of fee payment: 7

Ref country code: FR

Payment date: 19980709

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980714

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19980716

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19980720

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980728

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19980731

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980826

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990713

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990714

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990730

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990802

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990922

Year of fee payment: 8

BERE Be: lapsed

Owner name: EGRI LASZLO

Effective date: 19990731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000201

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

EUG Se: european patent has lapsed

Ref document number: 92810532.9

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20000201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000713

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000713

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050713