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EP0197171B1 - Séchoir à basse température pour une matière fibreuse pressurée - Google Patents

Séchoir à basse température pour une matière fibreuse pressurée Download PDF

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Publication number
EP0197171B1
EP0197171B1 EP19850104278 EP85104278A EP0197171B1 EP 0197171 B1 EP0197171 B1 EP 0197171B1 EP 19850104278 EP19850104278 EP 19850104278 EP 85104278 A EP85104278 A EP 85104278A EP 0197171 B1 EP0197171 B1 EP 0197171B1
Authority
EP
European Patent Office
Prior art keywords
low temperature
annular
air
drier according
temperature drier
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
Application number
EP19850104278
Other languages
German (de)
English (en)
Other versions
EP0197171A1 (fr
Inventor
Gerd Laske
Peter Dipl.-Ing. Valentin
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.)
BMA Braunschweigische Maschinenbauanstalt AG
Original Assignee
BMA Braunschweigische Maschinenbauanstalt AG
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 BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Priority to EP19850104278 priority Critical patent/EP0197171B1/fr
Priority to DE8585104278T priority patent/DE3573156D1/de
Publication of EP0197171A1 publication Critical patent/EP0197171A1/fr
Application granted granted Critical
Publication of EP0197171B1 publication Critical patent/EP0197171B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/001—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors
    • F26B17/005—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors with rotating floors, e.g. around a vertical axis, which may have scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure

Definitions

  • the invention relates to a low-temperature dryer for pressed fibrous material, in particular leached sugar beet pulp, with the features of the preamble of claim 1.
  • Such a dryer is known for example from GB-A-491 858.
  • the tower-like dryer has several fixed levels, over the bottoms of which the feed material above is distributed or cleared alternately in the radial direction in the radial direction by means of driven screws rotating around the tower axis, and the discharge of material under the last floor he follows.
  • a suction fan is assigned to one of the middle floors, while a fresh air suction device with filter and heating device is assigned to the top and bottom floors.
  • Dryers are also known (DE-C-362 358), in which between two coaxial, rotatable drums of different diameters in several.
  • Floors arranged floors are provided.
  • the floors consist of sector-shaped plates that can be tilted one after the other about their radial longitudinal axis.
  • the inner drum is closed at the top and connected to a warm air supply at the bottom, and is equipped with widely distributed air outlet openings between the floors. A flow through the floors and the material layers on them does not occur when these dryers are in operation.
  • the floors are also not arranged in housing-like pressure chambers.
  • low-temperature dryers with several levels arranged one above the other are known, each of which is equipped with conveyor belts that are permeable to the drying air.
  • the speed of the very long and several meter wide belts By adjusting the speed of the very long and several meter wide belts, the layer thickness of the material on the belts can be adjusted.
  • the structure of the known dryer is relatively complicated and prone to failure and often gives rise to difficulties in operation.
  • the dryer is surrounded on the outside by a jacket protecting the tower against external influences, in particular wind, which at the same time has an annular collecting shaft for the tower Exhaust air forms, which also protects the drying zones against heat loss.
  • the individual floors are each directly and to the same extent acted upon by the hot air, so that there is a high drying efficiency. If necessary, individual floors can be switched off by the drying air flow. This can be useful when there is less space required, i.e. less crop. But it also helps to maintain operations if repair work is required on one floor or the other.
  • each ring base is flowed through from top to bottom over the entire ring width of the base by the warm air, which is distributed or collected in closed ring chambers both above and below the base.
  • the hot air flow can be controlled very precisely in this way and evenly distributed over the entire ring floor of a floor.
  • the new low-temperature dryer also has a particular advantage in that the associated heating units as heat exchangers and the fans that serve to promote air can be arranged directly on the foundation of the dryer below the bottom floor. over a large area so that a ring-shaped heat exchanger arranged in the cross-sectional area of the ring bottoms on the tower floor can be flowed through over a large area via an external fresh air chamber, while the heated air can be introduced from the interior of the ring-shaped heat exchanger into the central distributor shaft without flow resistance. This results in a significant weight reduction in the design of the low-temperature dryer.
  • Several fans are preferably arranged distributed in the circumferential direction.
  • Each of these fans has a separate the intake duct for fresh air, the inlet openings of these intake ducts being in the area of the top of the tower-like low-temperature dryer, while the exhaust air from the external exhaust air collector can escape into the open near the bottom of the low-temperature dryer. This prevents any contamination of the fresh air drawn in.
  • the intake shafts for the fans can form sector-shaped sections within the ring-shaped exhaust air collector. If a part of the exhaust air is to be returned to the air circuit, closable suction openings can be provided between the successive exhaust air discharge sectors and fresh air supply sectors.
  • the ring bottoms can advantageously be driven about the axis of the low-temperature dryer, in opposite directions from floor to floor, so that the forces originating from the drive cancel each other out.
  • Between the floors are preferably arranged in the area of the radially outer exhaust air collector fixed shaft-like goods transfer chutes and equipped with convertible guide devices so that the goods can be passed on to one floor after another by skipping one floor if necessary. This makes it easier to adapt the throughput to the requirements and, if necessary, repairs can be carried out on individual floors without the operation of the low-temperature dryer having to be stopped.
  • twin screws which are fixed to the frame are expediently provided, the feed and distribution screw being assigned a corresponding exit and distribution slot for the exit of the goods onto the ring base.
  • the take-up and clearing auger is advantageously assigned a drivable reel, which forcibly conveys the good layer to the clearing auger.
  • the tower-like low-temperature dryer according to FIG. 1 is preferably intended for drying leached sugar beet chips.
  • the low-temperature dryer has a closed outer jacket 1, which is seated on a foundation 2 and is closed on the ceiling 3 at the top.
  • a ceiling opening 31 is provided, which in the example shown serves at the same time for feeding in according to arrow 81 and for supplying fresh air according to arrow 32. Separate ceiling openings can also be arranged for both processes.
  • the goods are loaded using conventional loading devices, which do not need to be explained in more detail here.
  • annular heat exchanger device 11 formed from a plurality of heat exchangers is arranged on the foundation 2.
  • the heat exchanger device 11 is traversed by a heat transfer fluid, which receives its heat from the waste heat generated in other processes of the factory.
  • the ring-shaped arrangement provides a large inflow and heat exchange surface, as is desired especially in low-temperature processes.
  • the heat exchanger device 11 directly on the foundation 2, the actual dryer construction is relieved of force.
  • a plurality of fans 13 are arranged distributed in the circumferential direction, the outlets of which open into the annular fresh air distribution chamber 12 and which are connected to the air inlet openings 31 on the ceiling 3 of the dryer by air intake shafts 30 extending over the entire height of the dryer.
  • the heat exchanger device 11 encloses the bottom end 10 of a central drying air distributor shaft 5 which extends over the entire height of the dryer and which, with negligible flow resistance, distributes the warm air over the entire height of the dryer.
  • the shaft 5 is arranged concentrically to the central shaft axis 47 of the dryer.
  • drying levels in the present case four drying levels 6-9, are distributed over the height of the drying air distributor shaft 5.
  • Each drying level 6-9 is connected to the shaft 5 via an annular inlet opening 17 which can be closed by an operable shutter.
  • Each level 6-9 is determined by a sieve-shaped ring base 20.
  • each ring base 20 is driven to rotate around the central shaft axis 47 of the dryer, the direction of rotation changing from floor to floor, so that the forces generated by the drive largely cancel each other out, which further contributes to relieving the load on the dryer construction.
  • an annular outflow chamber 24 for the exhaust air is provided between the ring base 20 of one level and the frustoconical ceiling 18 of the pressure chamber 18a of the level below, the flow cross section of which increases in the radial direction to the outside.
  • the jacket 1 of the dryer is at a radial distance from an outer protective jacket. 26 surrounded, which is arranged concentrically to the shaft axis 47, extends down to below the bottom floor 6 and is closed at 27 at the top of the upper floor 9.
  • This outer protective jacket 26 provides thermal protection for the low-temperature dryer, since it eliminates the influence of the ambient atmosphere, in particular wind, on the dryer.
  • the protective jacket also has other tasks to perform. It forms with the jacket 1 of the dryer an annular zone which is divided into individual sector-shaped sections in the circumferential direction. Some sections form the fresh air intake shafts 30 already mentioned for the fans 13. Between these are sectors which are directly connected to the annular outflow chambers 24 and, as exhaust air collectors 25, ensure that the exhaust air is removed.
  • the exit of the exhaust air from the exhaust air collector 25 is indicated by the arrow 29.
  • the exhaust air collectors 25 are open at 28 at the bottom, so that the exhaust air exits near the foundation 2 below, while the fresh air is drawn in according to the arrow 32 on the ceiling of the tower.
  • the protective jacket 26 together with the radial dividing walls serving to subdivide the exhaust air collectors 25 and intake shafts 30 further contributes significantly to the stability of the dryer construction. Inspection and maintenance platforms 25a can also be arranged in the exhaust air collectors 25 on each floor.
  • Fig. 1 From Fig. 1 it can be seen that the fresh air is sucked in through the opening 31 in the direction of arrow 32 and reaches the fans 13 via the vertical suction shafts 30. From the outlet of the fans, the fresh air is distributed according to arrow 14 in the fresh air distribution chamber 12 over the entry surface of the annular heat exchanger device 11. The warm air rises from the bottom end 10 of the central drying air distributor shaft 5 in accordance with the arrows 15 and is distributed in accordance with the arrows 16 the inlet openings into the pressure chambers 18a.
  • the drying air is distributed according to the arrows 23 over the surface of the material layer, penetrates it and the respective ring base 20 and reaches the annular outflow chambers 24, from which the exhaust air exits into the atmosphere through the opening 28 according to the arrow 29.
  • the intake ducts 30 and the exhaust air collectors 25 closable openings can be provided, so that, according to the arrows 50 in FIG. 3, parts of the exhaust air can be returned to the drying circuit during recirculation mode.
  • the material fed through the opening 31 according to the arrow 81 passes through the dryer from floor to floor and is removed from the ring floor 20 of the lowest floor 6, as indicated at 79.
  • the distributor and the clearing device in the exemplary embodiment shown consist of a twin screw 67, 68, which is assigned to each tier 6-9.
  • This twin screw 67, 68 is arranged fixed to the frame in the circumferential direction and, if necessary, can be adjusted in height relative to the associated floor.
  • the upper floor shown in the figure is floor 8.
  • the ring bottom of the tier 8 is driven in the direction of arrow 60 and the ring bottom of the underlying tier 7 in the opposite direction according to arrow 61.
  • An endlessly rotating chain loop 39 which is guided over deflection wheels 40, 41, 42, one of which is driven, is used to drive each ring base 20.
  • the radially inner strand 43 engages on a partial circumference of the rotatable ring base, the radially outer ring 21 of which has corresponding teeth or teeth which engage in the chain loop 39.
  • the screw 67 of the twin screw 67, 68 of the floor 8 serves as a feed screw and distributor.
  • the goods are normally fed through the chute-like chute 34 along the chute section 62.
  • a corresponding distribution slot ensures a uniform exit of the goods onto the sieve-shaped ring base 20.
  • the clearing screw 68 located directly in front of it in the direction of rotation picks up the goods that are passed through one circulation via the floor 8 and guides them to the incoming end of the goods transfer chute 34 leading to the next floor 7 to.
  • at least the auger 68 is assigned a driven take-up reel 70 which throws the crop into the screw flights.
  • a corresponding reel 69 can also in front of the as Feed screw and screw 67 designed as a distributor can be arranged to support the uniform distribution of the material on the ring base 20.
  • a deflection element 65 in the goods transfer chute 34 is pivoted via an actuating device 64 from a position in which the shaft section 62 is released into the position shown in FIG the floor 9 into the shaft section 63 and from there directly into the area of the auger 68 or into the inlet 80 of the goods transfer chute 34 lying below it.
  • the ring base in question must not be flowed through in the clearing or feed zone in order to prevent air breakthroughs in the areas of the ring base not covered by the good layer.
  • This is used in the exemplary embodiment shown in order to collect the passage of fine particles of the goods occurring in the clearing and feeding zone and to feed them to the floor below.
  • the effective transfer chute between the floors 8 and 7 is shown partially broken away.
  • a further central collecting chamber 71 is arranged between the collecting chambers 73 and is open at the bottom at 72, so that the material can also fall onto the ring base 20 underneath. At least the collecting chamber 71 can be acted upon as a back pressure chamber with a pressure which corresponds to the distributor pressure in the central drying air distributor shaft 5.
  • central collecting chamber 71 devices such as brushes, blowing nozzles or the like, which are not shown in the figures, are also arranged in the figures, so that the cleaned particles are also transported through the central collecting chamber 71 to the ring base underneath.
  • the inlet 80 of the chute-like crop transfer chute 34 is located in the central crop transfer chute, not shown in FIG. 4, differently than under the ring floor of floor 7 under the outlet of clearing screw 68, since the ring floors of floors 7 and 8 are driven in opposite directions, which in each case also for the floors of floors 8.9 and 7.6 apply.
  • the sector-shaped clamped screens forming the ring base 20 can be produced as a perforated stainless steel sheet which is completely smooth on the top and bottom.
  • the dust particles discharged with the exhaust air are released near the foundation 2 with the exhaust air.
  • the cold fresh air is drawn in in the dust-free area above the tower dryer. As a result, the otherwise usual contamination of the heat exchanger device 11 is reliably avoided.
  • mufflers can be installed in the vertical upwardly open air intake shafts 30. Because of the arrangement, these are also kept free from the disturbing influence of dust in the intake air.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Claims (17)

1. Sécheur basse température pour produit fibreux pressé, en particulier pour pulpe de betteraves à sucre macérées, pour lequel le produit délivré par le haut par l'intermédiaire d'un dispositif d'alimentation est susceptible d'être conduit successivement de haut en bas sur plusieurs étages (6 à 9) en forme de plateaux, chaque étage étant disposé dans une chambre de pression en forme de carter et comprenant un fond annulaire (20) perméable à l'air, un distributeur (67, 69) disséminant le produit selon une épaisseur régulière et un dispositif de raclage (68, 70) raclant le produit du fond annulaire approximativement en direction radiale et réalisant l'alimentation de l'étage immédiatement inférieur par l'intermédiaire d'un orifice de passage, et un dispositif d'alimentation d'air de séchage étant prévu, se composant de ventilateurs (13) et de groupes de chauffage (11), caractérisé en ce qu'il est prévu un compartiment de répartition d'air de séchage (5) central, s'étendant sur tous les étages (6 à 9), qui est isolé de manière étanche sur le haut et dont l'extrémité inférieure est raccordée aux ventilateurs (13) et aux groupes de chauffage (échangeur de chaleur 11) disposés sous l'étage le plus bas (6), en ce que chaque chambre de pression est réalisée sous forme d'une chambre annulaire (18a) fermée, entourant concentriquement le compartiment de répartition d'air de séchage (5) et reliée au compartiment de répartition d'air de séchage (5) par des entrées d'air (17) obturables, et en ce que chaque fond annulaire (20) perméable à l'air délimite avec la chambre annulaire (18a) fermée de l'étage immédiatement inférieur une chambre d'évacuation (24) de forme annulaire pour l'air d'évacuation, qui est ouverte radialement à l'extérieur, vers un collecteur d'air d'évacuation (25) concentrique au compartiment.
2. Sécheur basse température selon la revendication 1, caractérisé en ce que la hauteur, mesurée parallèlement à l'axe de compartiment (47), de chaque chambre annulaire (18a) fermée décroît en direction radiale, vers l'extérieur.
3. Sécheur basse température selon la revendication 1, caractérisé en ce que des fermetures en jalousies sont affectées aux entrées d'air (17) obturables des chambres annulaires (18a).
4. Sécheur basse température selon l'une des revendications 1 à 3, caractérisé en ce que le collecteur d'évacuation d'air (17) est réalisé fermé vers le haut et avec une sortie d'air d'évacuation (28) au-dessous de l'étage le plus bas (6).
5. Sécheur basse température selon l'une des revendications 1 à 4, caractérisé en ce que chaque ventilateur (13) présente un compartiment d'aspiration d'air (30) avec un orifice d'entrée d'air (31) disposé au-dessus de l'étage le plus haut (9).
6. Sécheur basse température selon la revendication 4 et 5, caractérisé en ce que le compartiment d'aspiration d'air (30) est disposé dans le collecteur d'air d'évacuation (25).
7. Sécheur basse température selon l'une des revendications 1 à 6, caractérisé en ce que un orifice d'aspiration obturable est affecté à chaque ventilateur, pour l'air d'évacuation dans un fonctionnement du sécheur avec recirculation à partir des étages (6 à 9).
8. Sécheur basse température selon l'une des revendications 1 à 6, caractérisé en ce qu'en cas de fonds annulaires (20) susceptibles d'être entraînés en rotation autour de l'axe de compartiment (47), des obturateurs de transfert de produit (34) ou des éléments équivalents sont disposés entre étages successifs (6, 9) et avec des dispositifs de renvois commutables (64, 65), ce de façon que le produit soit susceptible d'être alimenté à volonté en contournant l'étage suivant à l'un des étages situés deux étages plus loin.
9. Sécheur basse température selon la revendication 8, caractérisé en ce que les obturateurs de transfert de produit (34) ainsi que les extrémités de réception et de fourniture des répartiteurs (67, 69) ou du dispositif de raclage (68, 70) sont disposés radialement à l'extérieur des fonds annulaires (20).
10. Sécheur basse température selon la revendication 8 ou 9, caractérisé en ce que des chambres de collection (71) et des chambres de collection (73) supplémentaires pour les fines du produit sont prévues dans la zone de chaque chambre annulaire (20) dans laquelle sont disposés les obturateurs de transfert de produit (34), ces chambres étant réalisées sous forme de chambre de captation fermées, disposées au-dessous de cette zone de fond et recouvertes par la zone de fond et présentant un dispositif de transfert (74) pour le retour des fines dans le courant principal du produit.
11. Sécheur basse température selon la revendication 10, caractérisé en ce que les chambres de collection (71, 73) sont susceptibles d'être sollicitées par une pression fonction approximativement de la pression de répartition dans le compartiment de répartition d'air de séchage (5).
12. Sécheur basse température selon la revendication 10 ou 11, caractérisé en ce que des dispositifs de nettoyage des fonds de crible sont disposés dans la zone des chambres de collection (71, 73).
13. Sécheur basse température selon l'une des revendications 1 à 12, caractérisé en ce qu'il est prévu pour dispositif de répartition et de raclage une vis double (67, 68) réglable uniquement en hauteur par rapport au fond d'étage.
14. Sécheur basse température selon la revendication 13, caractérisé en ce qu'un tourniquet rabatteur de réception (70) est affecté au moins à la vis (68) recevant le produit depuis le fond annulaire (20).
15. Sécheur basse température selon l'une des revendications 8 à 14, caractérisé en ce que les fonds annulaires (20) tournants sont susceptibles d'être entraînés à contre sens, d'étage à étage (6 à 9).
16. Sécheur basse température selon l'une des revendications 1 à 15, caractérisé en ce que l'extrémité (10) située côté fond du compartiment central de répartition d'air de séchage (5) est délimitée par un dispositif échangeur de chaleur (11) de forme annulaire, qui est entouré extérieurement par une chambre de répartition d'air frais (12) alimentée par les ventilateurs (13).
17. Sécheur basse température selon l'une des revendications 1 à 16, caractérisé en ce que la sortie (28) du collecteur d'air d'évacuation (25) est disposée à proximité de l'extrémité inférieure du sécheur et que des compartiments d'aspiration d'air (30) ouverts à proximité de l'extrémité supérieure du sécheur sont prévus pour l'alimentation de l'air frais au dispositif de refoulement d'air de séchage.
EP19850104278 1985-04-09 1985-04-09 Séchoir à basse température pour une matière fibreuse pressurée Expired EP0197171B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19850104278 EP0197171B1 (fr) 1985-04-09 1985-04-09 Séchoir à basse température pour une matière fibreuse pressurée
DE8585104278T DE3573156D1 (en) 1985-04-09 1985-04-09 Low-temperature dryer for pressed fibrous material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19850104278 EP0197171B1 (fr) 1985-04-09 1985-04-09 Séchoir à basse température pour une matière fibreuse pressurée

Publications (2)

Publication Number Publication Date
EP0197171A1 EP0197171A1 (fr) 1986-10-15
EP0197171B1 true EP0197171B1 (fr) 1989-09-20

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EP19850104278 Expired EP0197171B1 (fr) 1985-04-09 1985-04-09 Séchoir à basse température pour une matière fibreuse pressurée

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EP (1) EP0197171B1 (fr)
DE (1) DE3573156D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9347705B2 (en) 2012-03-21 2016-05-24 Léon Crosset Continuous particle drying apparatus
CN109982723A (zh) * 2016-11-29 2019-07-05 莱昂·克罗塞特 连续消除植物来源的有机颗粒中的植物检疫害虫的烘炉
WO2023151990A1 (fr) * 2022-02-14 2023-08-17 Crosset Leon Appareil de séchage de particules avec recyclage d'une partie du gaz chaud

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109135775B (zh) * 2018-09-10 2023-10-20 中冶焦耐(大连)工程技术有限公司 具有风冷支撑架及环形预存室的干熄炉及其工作方法
BE1030218B1 (fr) 2022-01-26 2023-08-28 Crosset Leon Appareil de séchage en continu de particules comprenant un système de séparation et recirculation des fractions plus fines de particules
BE1030217B1 (fr) 2022-01-26 2023-08-28 Crosset Leon Appareil de séchage en continu de particules comprenant une boucle de régulation
CN119353906B (zh) * 2024-11-26 2025-11-11 常州市宏寰机械有限公司 一种饲料膨化用烘干设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29872C (de) * J. D. DUR AN in New-York, V. St. A Apparat zum Trocknen und Reinigen von Kaffee und anderen Substanzen
DE362358C (de) * 1919-09-02 1922-10-27 Vlessing & Co Ringfoermiger Hordentrockner
US2000817A (en) * 1933-06-27 1935-05-07 Midland Electric Coal Corp Apparatus for drying loose material
DE633244C (de) * 1935-10-26 1936-07-23 Humboldt Deutzmotoren Akt Ges Ausserhalb des Trocknergehaeuses angeordnete Siebvorrichtung fuer Braunkohle-Tellertrockner
GB491858A (en) * 1937-03-09 1938-09-09 Kenneth Arthur Sherwin Improvements in or relating to the treatment of fibrous solids with gases
GB543145A (en) * 1940-06-07 1942-02-12 Reginald Percy Fraser Improvements relating to methods of and means for treating spread materials with currents of air or gases
DE955938C (de) * 1951-08-01 1957-01-10 Erich Kiefer Konstruktions Kom Verfahren und Tellertrockner zur Trocknung von mehligen oder pastensrtigen Guetern

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9347705B2 (en) 2012-03-21 2016-05-24 Léon Crosset Continuous particle drying apparatus
CN109982723A (zh) * 2016-11-29 2019-07-05 莱昂·克罗塞特 连续消除植物来源的有机颗粒中的植物检疫害虫的烘炉
CN109982723B (zh) * 2016-11-29 2021-06-22 莱昂·克罗塞特 连续消除植物来源的有机颗粒中的植物检疫害虫的烘炉
WO2023151990A1 (fr) * 2022-02-14 2023-08-17 Crosset Leon Appareil de séchage de particules avec recyclage d'une partie du gaz chaud
BE1030270B1 (fr) * 2022-02-14 2023-09-11 Crosset Leon Appareil de séchage de particules avec recyclage d'une partie du gaz chaud

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Publication number Publication date
EP0197171A1 (fr) 1986-10-15
DE3573156D1 (en) 1989-10-26

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