EP0084820B1 - Procédé pour le séchage des copeaux de betterave à sucre et dispositif pour l'application du procédé - Google Patents

Procédé pour le séchage des copeaux de betterave à sucre et dispositif pour l'application du procédé Download PDF

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Publication number
EP0084820B1
EP0084820B1 EP83100268A EP83100268A EP0084820B1 EP 0084820 B1 EP0084820 B1 EP 0084820B1 EP 83100268 A EP83100268 A EP 83100268A EP 83100268 A EP83100268 A EP 83100268A EP 0084820 B1 EP0084820 B1 EP 0084820B1
Authority
EP
European Patent Office
Prior art keywords
air
drying
housing
pulp
intake pipe
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
EP83100268A
Other languages
German (de)
English (en)
Other versions
EP0084820A3 (en
EP0084820A2 (fr
Inventor
Günther Kammer
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.)
Kammer Ute
Original Assignee
Kammer Ute
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 Kammer Ute filed Critical Kammer Ute
Priority to AT83100268T priority Critical patent/ATE33070T1/de
Publication of EP0084820A2 publication Critical patent/EP0084820A2/fr
Priority to PCT/DE1984/000007 priority patent/WO1984002768A1/fr
Priority to JP59500611A priority patent/JPS60500459A/ja
Publication of EP0084820A3 publication Critical patent/EP0084820A3/de
Application granted granted Critical
Publication of EP0084820B1 publication Critical patent/EP0084820B1/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
    • 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
    • F26B3/06—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 gas or vapour flowing through the materials or objects to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • F26B11/16—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a vertical or steeply-inclined plane
    • 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
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • F26B17/205—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined with multiple chambers, e.g. troughs, in superimposed arrangement

Definitions

  • the invention relates to a method according to the first part of claim 1 and to a device according to the first part of claim 3.
  • Dryers of this type are known from DE-C-35 176.
  • the material that is brought in is moved through the arrangement for drying via a transport screw and warm air is introduced via valve-controlled openings. Blown air is only supplied in the lower area of the drying room, with no swirling of the material to be dried in the drying room. It has been shown that this arrangement is not suitable for use in the drying of sugar beet pulp, since the moisture content is relatively high and is approximately 80%.
  • a drying device according to US-A-1416 960 has become known.
  • the material is passed through a drum and a hot air supply is ensured via an air inlet tube with cross slots.
  • a dryer is also proposed in which slots are also arranged transversely to the conveying direction for the radial exit of drying air.
  • the object of the invention is to reduce the moisture content of sugar beet pulp relatively easily in a generic method and a device with low energy consumption and to ensure all-round air contact of the chips.
  • the advantage achieved here is that by rotating the drying air scoop, the chips are moved turbulently in all-round air contact and are additionally pressurized in alternation with time and then relaxed again. This allows the sugar beet pulp to work within itself and release moisture.
  • a device for achieving the object of the invention is formed by the characterizing features of claim 3.
  • a heat-insulating outer housing 3 shown in FIG. 1 four units 5 are arranged one above the other.
  • the outer housing 3 consists of plastic plates and is therefore well heat-insulating. At the same time, the outer housing 3 also serves to guide the air.
  • the units 5 are composed of several parts.
  • the units 5 are each surrounded on the outside by a housing 7 which is provided with a perforated air outlet opening 11 which extends along its upper side 9.
  • a paddle rotor 13 rotates within the housing 7.
  • This paddle rotor 13 consists, for example, of steel band rotor rims 15, which are connected to one another via longitudinal struts 16, and bearing rings 17.
  • Paddles 19 are provided on the longitudinal struts 16 for longitudinally conveying the chips and strippers 20 for stripping Dust and chips from the perforated outlet opening 11 are arranged.
  • the paddles 19 point inward from the longitudinal struts 16 to the center of the housing.
  • the wipers 20, which are arranged on the longitudinal struts 16, extend to the outside (approximately 2 mm) in front of the housing 7.
  • the bearing rings 17 are supported on an air inlet pipe 21 through which drying air is introduced into the interior of the drying unit 5.
  • the air inlet tube 21, which rotates counter to the paddle rotor 13 during operation, is provided with longitudinal slots 23 which extend along a longitudinal line 29 and from which the drying air (for example approximately 50,000 to 100,000 m 3 / h and unit) is pressed into the housing 7.
  • the full length of the longitudinal slots is provided with a heat-resistant, tension-resistant cover 24, which is shown and described in more detail in FIGS. 2-4. All four units have the same structure and the same functionality. They only promote in opposite directions in order to allow an appropriate back and forth processing.
  • FIGS. 2 to 4. Details of a trained unit can be seen from FIGS. 2 to 4.
  • the housing 7 is closed at its head ends 25 by means of lids 27 (FIGS. 2 and 4).
  • the lids 27 also serve to mount the air inlet tube 21.
  • the mounting and drive of the air inlet tube 21 are not explained in detail.
  • the designer uses the usual common constructions. The same applies to the paddle rotor 13 which, for example, can be rotated by a drive (not explained in more detail) via an outwardly directed ring gear 28.
  • the paddles 19 convey the chips 44 surrounding the drying air inlet pipe 21 in the unit according to FIG. 2 in the direction of an arrow 45 along the unit.
  • the paddles 19 give the chips a turbulent movement in accordance with their degree setting in relation to the conveying direction and rotational speed.
  • the air outlet opening 11 can be seen in FIG. 2 on the upper side 9 of the housing 7.
  • This air outlet opening 11 consists of a wide slot-shaped opening.
  • a cover grid 57 is stretched.
  • This cover grid 57 preferably consists of a fiberglass grid mesh coated with Teflon. Other grid materials are also conceivable.
  • the cover grid 57 is fixed along the air outlet edges on the top 9 of the housing 7, for example with retaining strips 59.
  • the mesh for example, has a mesh size of approx. 4 mm and has 70% open area. It is heat resistant and tensile.
  • FIG 3 shows a plan view 111 of a section of the housing 7 according to FIGS. 2 and 4.
  • the air outlet opening 11 is clearly covered by the cover 57, 57 blow-through openings 61 being formed between the meshes of the cover. It has been shown that soaring chips and dust do not clog the blow-through openings if, for example, four wipers 20 continuously strip off the layer consisting of chips and dust particles and deposit on the lattice and keep the residues of the same thickness of about 6 mm. This leads to an almost dust-free air outlet without pressure fluctuations.
  • the chips are each poured into one unit, for example into the uppermost unit 5 according to FIG. 2, from above; they turbulently swirl through this uppermost unit in the direction of arrow 45 and leave it through outlet 55. The chips then fall into the inlet of the unit conveying in the opposite direction and below. This means that continuous conveying operations are carried out in alternating directions.
  • the housing 7 of the second lowest unit is flushed with the warm air that flows out of the housing 7 of the lowest drying unit. All blown out warm air flows in the direction of arrows 69 and flows around all higher-lying units 5. This means that all higher-lying housings 7 are also heated from the outside, and the heat cannot escape from the inside of these units. The warm air is thus concentrated in a confined space and in particular in the units, and the heat introduced, apart from the heat escaping through the exhaust air duct 71, remains held within the device. Only the additional Energy required to rotate the air inlet tubes 21 and the paddle rotors 13. As can be seen from the schematic diagram of the uppermost unit according to FIG. 1, the air inlet tube 21 and the rotor 13 rotate in opposite directions. The opposite directions are indicated by the arrows 73 for the air inlet tube 21 and 75 for the paddle rotor 13.
  • FIG. 4 shows a modification of the unit 5 according to FIG. 2.
  • the unit 105 according to FIG. 4 largely corresponds to that according to FIGS. 2 and 3.
  • the same parts are provided with the same reference numerals.
  • the air inlet tube 121 rotates.
  • the air inlet tube 121 In the area A of the casing tube inlet 47 there are again several screw flights 49 on the air inlet tube 121 for introducing the chips into the drying chamber 41 (area B) and Sealing attached to this.
  • area C of the material outlet 55 as in the embodiment according to FIG. 2, a screw flight is omitted, as a result of which a plug of material forms for additional sealing.
  • a paddle screw replaces the paddle rotor 13.
  • screw paddles 119 are arranged on the air inlet pipe 121. These worm paddles 119 extend from the air inlet pipe 121 to the outside up to just in front of the inner wall of the housing 7 or up to about 6 mm in front of the mesh, in order to also open the mesh openings 61 by stripping by means of the worm paddles 119.
  • the rotating air inlet pipe 121 with its rotating screw paddles, ensures the material is conveyed in the direction of the arrow 45 and, depending on its degree setting with respect to the direction of conveyance and the speed of circulation, additionally ensures turbulent swirling of the chips.
  • the material flow is moved axially by means of the paddles and swirled turbulently.
  • the drying air blows radially into the drying space 41 through the longitudinal slots 23, with a circulating blow jet.
  • the paddles keep the schnitzel turbulent in suspension. In this way, there is an all-round air contact of the chips.
  • the contact time between the drying air and the chips is approx. 2 seconds.
  • the paddles are preferably arranged along one or more surface lines which loop around the housing 7 once over the length of the drying space 41 (area B).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
  • Preparation Of Fruits And Vegetables (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Seasonings (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Claims (12)

1. Procédé pour le séchage de copeaux de betterave à sucre, se présentant sous la forme de copeaux humides et pressés, selon lequel il est utilisé un dispositif transporteur horizontal (13) monté dans un carter (7) devant être traversé par les copeaux à sécher (44) , le carter contenant un conduit d'arrivée d'air central pouvant tourner (21), et selon lequel de l'air de séchage chauffé est amené par des ouvertures (23) que présente le conduit d'arrivée d'air, ouvertures qui sont prévues sur toute la longueur de la chambre de séchage (41) , le procédé étant caractérisé en ce que par des fentes longitudinales (23) que présente le conduit d'arrivée d'air (21), fentes longitudinales parallèles à l'axe de ce conduit, qui se succèdent en rangée, l'air de séchage chauffé est amené de telle manière que les copeaux (44) soient déplacés par turbulence, en se trouvant en contact de toutes parts avec l'air, l'air sortant, mis en circulation de façon à former en quelque sorte des aubes tournantes se présentant sur toute la longueur de la chambre de séchage (41), étant utilisé à la production des mouvements de turbulence.
2. Procédé suivant la revendication 1, caractérisé en ce que l'air est évacué de la chambre de séchage (41) par une ouverture de sortie d'air sous forme de fente (11 ).
3. Dispositif destiné au séchage de copeaux de betterave à sucre, se présentant sous la forme de copeaux huides et pressés , qui comporte un dispositif transporteur horizontal (13) monté dans un carter (7) , dispositif dont le carter (7) , qui est fixe, contient un conduit d'arrivée d'air central pouvant tourner (21), présentant des ouvertures (23) qui s'étendent sur toute la longueur de la chambre de séchage (41) pour l'amenée d'air de séchage, et présente une sortie d'air, le dispositif étant caractérisé en ce que les ouvertures sont prévues sous la forme de fentes longitudinales (23) parallèles à l'axe du conduit d'arrivée d'air, qui se succèdent en rangée, fentes longitudinales qui sont munies d'une couverture perforée (24), en ce que dans la chambre de séchage (41), il est prévu des aubes (19, 119) qui sont destinées à assurer le transport des copeaux (44) et en ce que l'ouverture de sortie d'air (11) est munie d'un treillis de couverture (57).
4. Dispositif suivant la revendication 3, caractérisé en ce que les aubes (19) et le conduit d'arrivée d'air (21) sont prévus pour tourner en sens inverses les unes par rapport à l'autre.
5. Dispositif suivant l'une ou l'autre des revendications 3 et 4, caractérisé en ce que les aubes (119) sont montées sur le conduit d'arrivée d'air (121).
6. Dispositif suivant l'une quelconque des revendications 3 à 5, caractérisé en ce que l'ouverture de sortie d'air (11) est prévue au côté supérieur (9) du carter (7), sur toute la longueur de la chambre de séchage (41).
7. Dispositif suivant l'une quelconque des revendications 3 à 6, caractérisé en ce que le treillis de couverture (57) de l'ouverture de sortie d'air (11) peut être balayé par les aubes (119) ou par un organe de raclage (20) que porte un rotor à aubes (13).
8. Dispositif suivant l'une quelconque des revendications 3 à 7, caractérisé en ce que la couverture (24) et le treillis de couverture (57) sont formés d'un réseau de treillis de fibre de verre revêtu de Téflon.
9. Dispositif suivant la revendication 8, caractérisé en ce que le réseau de treillis de fibre de verre (24, 57) présente une surface d'ouverture de treillis d'environ 70 pour cent, dont l'ouverture de maille est d'environ 4 mm.
10. Dispositif suivant l'une quelconque des revendications 3 à 9, caractérisé en ce qu'à la zone d'entrée (A) et à la zone de sortie (C) du conduit d'arrivée d'air (21), il est adjoint des spires de vis sans fin (respectivement désignées par 49 et par 53) qui, par l'intermédiaire des copeaux transportés, formant bouchon, ferment de façon étanche, des deux côtés, la chambre de séchage (41) (zone B).
11. Dispositif suivant l'une quelconque des revendications 3 à 10, caractérisé en ce que le carter (7), avec le conduit d'arrivée d'air (21, 121) , est prévu sous la forme d'une unité (5, 105) dans un habillage externe isolant de la chaleur (3).
12. Dispositif suivant la revendication 11, caractérisé en ce que plusieurs unités (5, 105) sont prévues en superposition dans un habillage externe (3).
EP83100268A 1982-01-22 1983-01-14 Procédé pour le séchage des copeaux de betterave à sucre et dispositif pour l'application du procédé Expired EP0084820B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT83100268T ATE33070T1 (de) 1982-01-22 1983-01-14 Verfahren zum trocknen von zuckerruebenschnitzeln und vorrichtung zur durchfuehrung dieses verfahrens.
PCT/DE1984/000007 WO1984002768A1 (fr) 1983-01-14 1984-01-16 Procede de sechage complet de cossettes de betteraves sucrieres et installation pour executer le procede
JP59500611A JPS60500459A (ja) 1983-01-14 1984-01-16 砂糖大根チツプの完全乾燥法及びこの方法を実施する装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3201843 1982-01-22
DE19823201843 DE3201843A1 (de) 1982-01-22 1982-01-22 "verfahren und vorrichtung zum trocknen von zuckerruebenschnitzeln"

Publications (3)

Publication Number Publication Date
EP0084820A2 EP0084820A2 (fr) 1983-08-03
EP0084820A3 EP0084820A3 (en) 1984-09-05
EP0084820B1 true EP0084820B1 (fr) 1988-03-16

Family

ID=6153594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100268A Expired EP0084820B1 (fr) 1982-01-22 1983-01-14 Procédé pour le séchage des copeaux de betterave à sucre et dispositif pour l'application du procédé

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EP (1) EP0084820B1 (fr)
AT (1) ATE33070T1 (fr)
DE (2) DE3201843A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109916165A (zh) * 2019-03-01 2019-06-21 广州市盈夏机械技术有限公司 一种节能环保多功能双立罐滚筒烘干机
CN110030809A (zh) * 2019-04-17 2019-07-19 焦作大学 一种植物茎部切片干燥装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE165644C (fr) *
DE35176C (de) * 1885-08-15 1886-04-05 E. BACH in Leipzig, Alexanderstr. 38, Hof II Trockenapparat
US1416960A (en) * 1921-08-15 1922-05-23 Ladisch Karl Drier
US2019668A (en) * 1933-07-03 1935-11-05 Jesse J Fowler Drier
US3494049A (en) * 1968-03-18 1970-02-10 Universal Oil Prod Co Apparatus for fluid treatment of granular material
DE2143462B2 (de) * 1971-08-31 1973-09-27 Karl 6080 Gross-Gerau Kron Gerät zur kontinuierlichen Trocknung landwirtschaftlicher Erzeugnisse

Also Published As

Publication number Publication date
DE3376031D1 (en) 1988-04-21
DE3201843A1 (de) 1983-08-04
EP0084820A3 (en) 1984-09-05
EP0084820A2 (fr) 1983-08-03
ATE33070T1 (de) 1988-04-15

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