EP2659212B1 - Système et procédé de séchage de particules - Google Patents

Système et procédé de séchage de particules Download PDF

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Publication number
EP2659212B1
EP2659212B1 EP11793341.6A EP11793341A EP2659212B1 EP 2659212 B1 EP2659212 B1 EP 2659212B1 EP 11793341 A EP11793341 A EP 11793341A EP 2659212 B1 EP2659212 B1 EP 2659212B1
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EP
European Patent Office
Prior art keywords
tower
vanes
particles
side wall
particle
Prior art date
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Application number
EP11793341.6A
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German (de)
English (en)
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EP2659212A1 (fr
Inventor
Otto Virag
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Philip Morris Products SA
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Philip Morris Products SA
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Priority to EP11793341.6A priority Critical patent/EP2659212B1/fr
Priority to PL11793341T priority patent/PL2659212T3/pl
Publication of EP2659212A1 publication Critical patent/EP2659212A1/fr
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Publication of EP2659212B1 publication Critical patent/EP2659212B1/fr
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • F26B17/1433—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material
    • F26B17/1441—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being stationary, e.g. fixed panels, baffles, grids, the position of which may be adjustable
    • F26B17/1458—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being stationary, e.g. fixed panels, baffles, grids, the position of which may be adjustable consisting of perforated panels or baffles; consisting of grids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • F26B17/1433—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material
    • F26B17/1466—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement
    • F26B17/1475—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement the movement being a vibration or oscillation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • F26B17/1433—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material
    • F26B17/1466—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement
    • F26B17/1491—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement the movement being a rotation around a horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/12—Walls or sides; Doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/14—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity
    • F26B3/16—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity in a counter-flow of the gas or vapour

Definitions

  • the present invention relates to a particle drying system. Further, the present invention relates to a particle drying method, wherein a mass flow of particles is transported by gravitational forces through a tower, and a gaseous drying medium flows in the opposite direction of the particle transport direction.
  • Particle drying systems are known for example from GB-A-875,685 which discloses a vertical cooling tower for drying tobacco.
  • the tobacco enters the tower from the top and is subjected to the cooling effect of a current of cold air drawn up through the tower.
  • baffles or vanes are arranged within the tower.
  • the tobacco falling under gravity in the tower is distributed by the vanes.
  • the vanes also slow down the fall of the tobacco within the tower.
  • the drying effect on the individual particles may vary, resulting in undesirable quality differences of the processed particles.
  • DE 480 572 C discloses a drying device for granular goods, wherein zig-zag formed walls, which consist of sliding surfaces connected by hinges, are provided with matter to be dried through a funnel. At the lower end, an air inlet is arranged.
  • US 1,816,236 discloses an apparatus for cooling and conditioning grain, which moves downwardly by gravity while a counter current of air is passed therethrough.
  • Several hingedly mounted baffle plates are provided.
  • the present invention provides a particle drying system according to claim 1.
  • the particle drying system comprises a tower through which the particles are moving substantially in a first direction and through which a flow of a gaseous drying medium is moving substantially in a second direction, wherein the first direction is substantially opposite of the second direction.
  • the particle drying system further comprises adjustment means adapted to change the flow characteristics within the tower.
  • the adjustment means comprise at least one movable side wall of the tower.
  • the at least one moveable side wall is moveable at least in a direction perpendicular to the longitudinal extension of the tower. This is an efficient and reliable manner to implement the variation of the cross-sectional area of the tower.
  • the side walls adjacent to the moveable sides are preferably connected in a substantially gas-tight manner to the moveable side wall, for example with rubber seals.
  • two opposing side walls may be moveable, or two adjacent side walls.
  • the particles move downward through the tower, accelerated by gravity.
  • the downward movement is opposed by the upward current of the gaseous treatment medium.
  • the mass flow rate of the particles is substantially fixed. This means that the amount of moisture that may be removed from a given mass flow is predetermined. Additional parameters that influence the drying process are for example the temperature of the particles, the temperature of the gaseous drying medium and the difference in moisture of the particles and the drying medium.
  • the particle drying apparatus is particularly suitable for the drying of plant material such as for example tobacco particles such as for example tobacco cut filler, tobacco lamina, tobacco stems or tobacco shreds.
  • plant material such as for example tobacco particles such as for example tobacco cut filler, tobacco lamina, tobacco stems or tobacco shreds.
  • Other plant material may be for example tea leafs, mint leaves, herbs or cloves.
  • masses flow rate of particles for example tobacco particles, is used throughout the specification to indicate the correlation between the passage of a given mass of particles, in a first direction through the tower in a given time period, measured in kilograms per second.
  • a substantially constant moisture level of the particles leaving the particle drying system may be obtained for a range of differing mass flows.
  • the system according to the invention allows for the selection of a wide range of adjustable operating conditions of the particle drying system according to the invention.
  • the control of the flow resistance independently of the mass flow rate of the particles has the additional advantage that the particles passing through the tower may be subjected to substantially constant frictional and fluidic forces during their residence time. This may prevent fluctuations in the moisture of the particles or other parameters of the particles within the particle drying system over time.
  • the residence time of the particles inside the particle drying system is controlled.
  • the adjustment means are controlled to adjust the flow resistance of the tower such that a predetermined moisture content of the particles that leave the particle drying system is attainable for a range of different particle mass flows.
  • potential degradation of the particles that may be caused by a high mass flow rate can be reduced or prevented. Degradation may lead for example to the reduction of the size of the particles and the creation of particle dust.
  • the drying time of the particles can be adjusted to one or more of the parameters of the mass flow rate of particles through the particle drying system, like for example particle size, moisture content of the particles before they enter into the particle drying system and the moisture content that is desired for the particles when the particles leave the particle drying system.
  • the adjustment means are adapted to allow for the adjusting of the flow resistance by changing the cross section of the tower to a narrower or wider shape.
  • the adjustment means adjust the flow resistance of the tower by adjusting the size or number of obstacles in the path of the particles or both.
  • the adjustment means may be for example the combination of moving elements and actuators that move the moving elements. Moving elements may be for example walls of the tower or structures that may be introduced into or retracted from the tower.
  • the volume flow rate of the gaseous drying medium is controllable.
  • the volume flow rate of the gaseous drying medium may also be used to control the mass flow rate and residence time of the particles in the particle drying system.
  • the adjustment means are adapted to alter the cross-sectional area of the tower.
  • the adjustment means may comprise adjustable vanes which extend into the tower.
  • the vanes may serve two different purposes. They may constitute obstacles regarding the transportation of the particles through the tower, to control the free traveling distance of the particles and the drying time of the particles in the tower.
  • the vanes may control the flow of the gaseous drying medium, for example to produce swirl or turbulence. This may have a beneficial effect regarding the exposure of the individual particles to the gaseous drying medium, as the swirl and turbulent flow may separate the individual particles from each other.
  • the vanes may be at least partially permeable to the gaseous drying medium.
  • the vanes may be at least partially made of meshed material.
  • the vanes may be provided with nozzles or funnels, which direct the flow of gaseous drying medium in a desired direction or to locally increase the flow rate.
  • the permeability of the vanes has the benefit that even the particles which are passing adjacent to the vanes are subjected to the flow of gaseous drying medium.
  • the gaseous drying medium may also be provided to parts of the tower which would be subjected only to little or no flow of gaseous drying medium if the vanes would not be permeable.
  • the adjustable vanes are connected to the side walls of the tower by means of hinges.
  • the rotation axis of the hinges is in a substantially horizontal direction such that the inclination of the vanes with respect to a horizontal plane may be controlled.
  • the hinges may also comprise actuators which are connected to individually or collectively control the vanes.
  • the vanes may be provided with a pinion gear which engages in a tooth rack. The toothed rack is used to tilt the vanes around the hinge axes.
  • Two opposite side walls of the tower are provided with at least one but preferably a plurality of vanes respectively, like for example between 2 to about 50 vanes, preferably between 3 and 8 vanes.
  • the vanes may extend substantially perpendicular to the extension direction of the tower along the width of the respective side walls.
  • the vanes may be inclined towards the outside of the tower, such that the portion of the vanes which extends into the inside of the tower is lowest and the portion of the vanes which is connected to the wall of the tower is highest.
  • the vanes have a curved geometry.
  • the curved geometry allows that the curvature of the vanes may be designed to be steeper in the areas towards the walls of the tower and less steep in the areas which are directed towards the centre of the tower. This has the benefit that the particles are gently directed to the center of the tower where the flow of gaseous drying medium rate is higher.
  • the vanes may be arranged in different heights at the opposite side walls. It is preferred that the vanes at one side wall are arranged at a height which is substantially in between the height of the two nearest vanes at the opposite side wall. In one embodiment the vanes are adapted to be titled in between a lowered position where they are closest to the side walls and a raised position where they are in their maximal extension into the tower. This feature increases the travelling time of the particles through the towers when the vanes are in a raised position and increases the flow of particles when the vanes are in their lowered position. Preferably the vanes overlap in their partly or fully raised positions with the vanes of opposite side walls, such that a zig-zag flow path is formed.
  • the vanes are adapted to vibrate to prevent that particles settle on any of the vanes. This has the advantage that the particles are constantly travelling through the tower such that all of the particles have a substantially similar average residence time in the tower.
  • the vibration of the vanes may be actuated by the flow of gaseous drying medium or by actuators.
  • the cross-sectional area of the tower is varied along the longitudinal extension of the tower.
  • the tower has a conical form along its extension direction.
  • the flow of gaseous drying medium velocity can be increased in the lower part of the tower, while at the top of the tower, the particle density is lowered.
  • the cross-sectional area of the tower can also be decreased towards the top if a contrary effect is desired.
  • the adjustment means may include a tiltable side wall to alter the local cross-sectional areas of the tower along the longitudinal extension of the tower.
  • At least one side wall of the tower is moveable in the longitudinal extension direction of the tower with respect to another side wall of the tower.
  • the inner flow resistance of the tower may be varied and the flow characteristics for the gaseous drying medium and the particles may be changed.
  • At least one controllable additional nozzle is provided to locally introduce additional flow of gaseous drying medium within the tower.
  • This nozzle may comprise ducts or fans which locally provide flow of gaseous drying medium within the towers.
  • the nozzle may be disposed in the side walls of the tower and may provide flow which is directed towards the inside of the tower. The flow may also be directed in a substantially horizontal direction, or in a slanted direction. Preferably, the nozzle can be controlled to be actuated on demand.
  • the additional air flow introduced into the tower may change the flow resistance of the tower by introducing countercurrents and turbulences.
  • the tower has a substantially circular cross-sectional area and the diameter of the tower can be adapted to change the flow characteristics of the tower.
  • the variation of the circular cross-sectional area of the tower may be attained by manufacturing the tower of a flexible material which has a wavelike form in a circumferential direction thereof.
  • the invention is directed to method of drying particles according to claim 11, and in particular to a particle drying method of changing the flow characteristics in the tower by adjustment means.
  • the flow characteristics in the tower are altered by movement of at least one side wall of the tower. This can be a translational movement of the side wall in the longitudinal extension direction of the tower, or a translational movement of the sidewall perpendicular to the extension direction of the tower.
  • the movement of at least one side wall of the tower may also comprise a rotational movement of the side wall, such as a tilting of the side wall around a horizontal axis.
  • the different movements of the side wall of the tower may be combined.
  • the flow characteristics in the tower are altered by movement of adjustable vanes provided in the tower.
  • the adjustment of the vanes may comprise rotation around a horizontal axis which is extended substantially along a side wall of the tower. Also, it may comprise horizontal rotation of the vanes along a horizontal axis which is perpendicular to a side wall of the tower.
  • the flow characteristics of the tower, the particle amount and the flow of gaseous drying medium are controlled such that the particles are subjected to the gaseous drying medium in the tower for a predetermined average drying time.
  • the adjustment means and the flow of the gaseous drying medium can be controlled by a control module which allows the variation of both the flow of the gaseous drying medium and the state of the adjustment means in accordance with the conditions of the particle drying measured by sensors within or outside the tower.
  • the control module comprises a feedback system to enable an online change of tower flow resistance responsive to the signals produced by the sensors.
  • Fig. 1 the particle drying system 1 is shown in a cross-sectional view, wherein the tower 2 extends in a vertical longitudinal extension direction 30.
  • the tower 2 comprises a left side wall 3 and a right side wall 4 which extend in a vertical direction parallel to each other.
  • a variety of vanes 5, 6 is provided at each of the side walls 3, 4.
  • the vanes 5, 6 are disposed alternatively on the left side wall 3 and the right side wall 4 of the tower 2 in the longitudinal extension direction 30.
  • the tower also comprises a front side wall and a rear side wall.
  • the right side wall 4 is moveable in a horizontal direction 40 to increase or decrease the cross-sectional area of the tower 2. Therefore, the right side wall 4 is in sliding engagement with the front side wall and the rear side wall. At the contact of the right side wall 4 with the front side wall, respectively the rear side wall, a sealing element, such as a rubber seal may be provided.
  • the tower 2 is closed at its side walls 3, 4, and is open on the top and bottom.
  • the adjustable vanes 5 are all connected hingedly to the left side wall 3, the adjustable vanes 6 are all connected to the right side wall 4 of the tower 2, and may be rotated around the horizontal angle 10 as indicated for the uppermost left vane 5.
  • the adjustable vanes 5, 6 may be rotated together or individually. Different positions of the uppermost left vane 5 are indicated in dashed lines.
  • the adjustable vanes 5, 6 are provided with a pinion gear around their hinge connection to the side wall and a tooth rack is disposed along the side wall to adjust the angle of the vanes 5, 6 by being moved vertically.
  • the right side wall 4 and the adjustable vanes 5, 6 constitute the adjustment means in this embodiment.
  • the tobacco particles are conveyed to the upper opening 7 of the tower 2 and released into same as indicated by the arrow 20.
  • the tower 2 is subjected to an upwards flow of gaseous drying medium as indicated by the arrow 50.
  • the gaseous drying medium may comprise special ingredients for the drying of the tobacco as known in the art or may just consist of air of a certain moisture and temperature.
  • the gaseous drying medium is preferably provided through a lower opening 8 of the tower 2 or through nozzles in the side walls 3, 4 near the lower opening 8 of the tower 2 or both.
  • the tobacco particles are transported by gravitational forces through the tower 2, wherein the flow of gaseous drying medium 50 and the flow resistance of the tower 2 determine how long the tobacco particles remain in the tower 2. Thus, the drying intensity of the particles in the tower 2 can be adjusted.
  • the particle transport through the tower should be increased, either the cross-sectional area of the tower is increased or the vanes 5, 6 are lowered, such that a faster transport of the tobacco particles through the tower occurs.
  • the transportation velocity of the particles through the tower can also be increased by lowering the velocity of the flow of gaseous drying medium 50.
  • the cross-sectional area of the tower 2 can be lowered by moving the side wall 4 towards the inside of the tower 2, or the adjustable vanes 5, 6 can be raised.
  • the flow 50 of gaseous drying medium in the counter direction of the transport direction of the particles can be increased, such that fluidic forces lower the transportation velocity of the tobacco particles through the tower 2.
  • heavier particles, such as moist particles, which are fed into the tower 2 can be treated without traveling too fast.
  • the drying time and intensity of the particles can be determined.
  • the drying process of the tobacco particles 20 can be constantly monitored, for example by measuring the particles to gas relation in the tower 2. Also the mass flow rate and the moisture content before and after the particle drying system can be measured. The measurements may be used for a feedback loop to control the position of the side walls, the position of the vanes or the temperature and volume flow rate of the gaseous drying medium.
  • a conveyance means 9 such as a conveyor belt which transports the treated tobacco particles for further processing.
  • the adjustability of the flow resistance of the tower 2 allows treating the particles in a gentle manner whilst allowing treating different types and amounts of particles and for example particles comprising different moisture levels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
  • Manufacture Of Tobacco Products (AREA)

Claims (13)

  1. Système de séchage des particules (1), comprenant une tour (2), la tour (2) étant adaptée pour que les particules se déplacent essentiellement dans une première direction et pour qu'un flux (50) d'un milieu de séchage gazeux se déplace essentiellement dans une deuxième direction, où la première direction est essentiellement opposée à la deuxième direction,
    où le système de séchage des particules (1) comprend en outre des moyens de réglage adaptables pour modifier les caractéristiques de flux des particules dans la tour, et
    où les moyens de réglage (4) comprennent une paroi latérale (4) de la tour (2), où la paroi latérale (4) est mobile au moins dans une direction perpendiculaire à l'extension longitudinale (30) de la tour, et où la paroi latérale (4) est opposée à une autre paroi latérale (3) de la tour (2),
    caractérisé en ce que
    les deux parois latérales opposées (3, 4) de la tour (2) sont fournies avec au moins une aube (5, 6), respectivement.
  2. Système de séchage des particules selon la revendication 1, dans lequel les moyens de réglage (4) sont adaptés pour modifier la résistance au flux de la tour (2).
  3. Système de séchage des particules selon l'une des revendications précédentes, dans lequel les moyens de réglage (4) comprennent les aubes (5, 6) réglables, où les aubes réglables (5,6) s'étendent dans la tour (2).
  4. Système de séchage des particules selon la revendication 3, dans lequel les aubes (5, 6) peuvent être au moins partiellement perméables à l'air.
  5. Système de séchage des particules selon la revendication 3 ou 4, dans lequel les aubes (5, 6) sont adaptées pour être inclinées entre une position abaissée, où les aubes (5, 6) sont les plus proches des parois latérales (3, 4) et une position relevée, où les aubes (5, 6) sont dans leur extension maximale dans la tour (2).
  6. Système de séchage des particules selon l'une quelconque des revendications 3 à 5, dans lequel les aubes (5, 6) sont adaptées pour vibrer.
  7. Système de séchage des particules selon l'une quelconque des revendications précédentes, dans lequel la section transversale de la tour (2) est variable le long de l'extension longitudinale de la tour (2), la tour (2) ayant en particulier une forme conique le long de sa direction d'extension.
  8. Système de séchage des particules selon l'une quelconque des revendications précédentes, dans lequel au moins une paroi latérale (3, 4) de la tour (2) est mobile dans la direction de l'extension longitudinale de la tour (2) par rapport à une autre paroi latérale (3, 4) de la tour (2).
  9. Système de séchage des particules selon l'une quelconque des revendications précédentes, dans lequel au moins une buse contrôlable est fournie pour fournir un flux supplémentaire de milieu de séchage gazeux dans la tour (2).
  10. Système de séchage des particules selon l'une des revendications précédentes, dans lequel la tour (2) possède une section transversale sensiblement circulaire et le diamètre de la tour (2) peut être adapté pour modifier les caractéristiques de flux de la tour (2).
  11. Procédé pour le séchage des particules, de préférence des particules végétales, plus préférablement des particules de tabac, comprenant les étapes de
    - transport des particules par des forces gravitationnelles à travers une tour (2),
    - fourniture d'un flux (50) d'un milieu de séchage gazeux dans la direction opposée de la direction du transport de particules,
    - fourniture de moyens de réglage dans la tour (2), et
    - modification des caractéristiques de flux dans la tour (2) par des moyens de réglage (4, 5, 6), comprenant le déplacement d'au moins une paroi latérale (4) de la tour (2), où la paroi latérale (4) est opposée à une autre paroi latérale (3) de la tour (2),
    caractérisé en ce que
    les deux parois latérales opposées (3, 4) de la tour (2) sont fournies avec au moins une aube (5, 6), respectivement.
  12. Procédé de séchage des particules selon la revendication 11, dans lequel les aubes (5, 6) sont réglables et l'étape de modification des caractéristiques de flux dans la tour (2) comprend en outre l'étape de déplacement des aubes réglables (5, 6) fournies dans la tour (2).
  13. Procédé de séchage des particules selon la revendication 11 ou 12, dans lequel les caractéristiques de flux dans la tour (2), le flux de masse des particules et le flux du milieu de séchage gazeux sont contrôlés de sorte que les particules sont soumises au milieu de séchage gazeux dans la tour (2) pour un temps de séchage moyen prédéterminé.
EP11793341.6A 2010-12-30 2011-12-08 Système et procédé de séchage de particules Active EP2659212B1 (fr)

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EP11793341.6A EP2659212B1 (fr) 2010-12-30 2011-12-08 Système et procédé de séchage de particules
PL11793341T PL2659212T3 (pl) 2010-12-30 2011-12-08 Układ i sposób suszenia cząstek

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10016206 2010-12-30
PCT/EP2011/006189 WO2012089301A1 (fr) 2010-12-30 2011-12-08 Système et procédé de séchage de particules
EP11793341.6A EP2659212B1 (fr) 2010-12-30 2011-12-08 Système et procédé de séchage de particules

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EP2659212B1 true EP2659212B1 (fr) 2019-07-17

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JP (1) JP2014501111A (fr)
KR (2) KR102017445B1 (fr)
CN (1) CN103314268B (fr)
BR (1) BR112013016634B1 (fr)
ES (1) ES2742024T3 (fr)
HU (1) HUE044753T2 (fr)
PL (1) PL2659212T3 (fr)
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WO (1) WO2012089301A1 (fr)

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CN107917579A (zh) * 2017-12-20 2018-04-17 江苏仅联合智造有限公司 一种药物湿颗粒悬浮干燥工艺和设备
KR102330471B1 (ko) * 2019-12-24 2021-11-24 한국에너지기술연구원 입자의 균일 건조 및 반탄화를 위한 건조 및 반탄화 반응기
CN113712237A (zh) * 2021-09-23 2021-11-30 云南中烟工业有限责任公司 一种内置隔板式热风低速对流式烘丝装置及其操作方法
CN113654337B (zh) * 2021-09-23 2023-06-06 云南中烟工业有限责任公司 一种分段式热风低速对流式烘丝装置及其操作方法
CN113892667A (zh) * 2021-11-08 2022-01-07 云南中烟工业有限责任公司 一种具有冷却和加湿加料功能的气流烘丝机及其操作方法

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CN103314268B (zh) 2016-04-06
KR20140009231A (ko) 2014-01-22
BR112013016634A2 (pt) 2016-10-04
HUE044753T2 (hu) 2019-11-28
EP2659212A1 (fr) 2013-11-06
WO2012089301A1 (fr) 2012-07-05
JP2014501111A (ja) 2014-01-20
RU2013135467A (ru) 2015-02-10
KR102017445B1 (ko) 2019-09-02
PL2659212T3 (pl) 2020-03-31
RU2584050C2 (ru) 2016-05-20
ES2742024T3 (es) 2020-02-12
CN103314268A (zh) 2013-09-18
BR112013016634B1 (pt) 2020-09-29
KR20180103183A (ko) 2018-09-18

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