EP3553437B1 - Dispositif et procédé de séchage, de broyage et de séparation de produits à sécher - Google Patents

Dispositif et procédé de séchage, de broyage et de séparation de produits à sécher Download PDF

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Publication number
EP3553437B1
EP3553437B1 EP19167853.1A EP19167853A EP3553437B1 EP 3553437 B1 EP3553437 B1 EP 3553437B1 EP 19167853 A EP19167853 A EP 19167853A EP 3553437 B1 EP3553437 B1 EP 3553437B1
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Prior art keywords
drying material
magnetic field
drying
field
processing chamber
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EP19167853.1A
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German (de)
English (en)
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EP3553437A1 (fr
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Shukhrat Balabekov
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    • 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
    • F26B3/08—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 so as to loosen them, e.g. to form a fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried
    • 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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • 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
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
    • F26B17/102—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with material recirculation, classifying or disintegrating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/04—Heating arrangements using electric heating
    • 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
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment

Definitions

  • the invention relates to a method and a device for drying organic and inorganic substances. More precisely, the invention relates to a device with the features of claim 1 and a method with the features of claim 7.
  • the liquid is often sprayed as finely as possible using mechanical, thermal and combined methods of comminuting the liquid droplets or particles.
  • the inventive device enables the stable unipolar charging of the dispersed aerosol phase, that is to say the smallest liquid droplets, over the entire volume, even during the spraying process.
  • this property arises directly during the mechanical knocking out of liquid droplets from the wet material.
  • the invention relates initially to a method for removing one or more liquids (drying) from various organic and inorganic substances during the comminution of the respective particles by converting the majority of one or more liquids into aerosol, vapor or mist (also referred to as aerosol ).
  • the energy consumption is significantly reduced in comparison to conventional methods, in particular compared to conventional thermal evaporation of the same liquids.
  • the aim of the invention is to show a new method of removing liquids from the substances described in the technical sources cited and at the same time to offer a technical device for carrying out the method.
  • It consists of a housing, a rotating shaft on which the knives and a perforated heated baffle plate are attached.
  • the subject of the present invention is therefore a process for drying, grinding and separating such and similar substances by means of drying processes that are far less energy-intensive than conventional processes and in which the liquid is not evaporated but is removed by converting it into aerosol.
  • the object of the present invention is to provide a device and a method for drying and comminuting items to be dried, which allow more energy-saving drying and controlled conductive and convective heating of the dispersed medium and the dispersion phase with simultaneous separation and separation.
  • Municipal sludge for example, has a temperature of 20 ° C and usually contains up to 25% dry matter and 75% water.
  • the actual energy consumption can exceed the calculated value by three times or more.
  • the resulting droplet size which is in the range between 0.01 ⁇ m and 10 ⁇ m, is decisive.
  • the energy required for droplet formation can be assumed to be equal to the energy of the surface tension of the entire surface between water and air.
  • drying substances are almost always a heterogeneous mass, made up of a number of different substances as well as from one type or may consist of several different types of liquids, although usually this mass consists predominantly of water.
  • liquids in such mixtures can consist of freely moving liquid as well as of the liquid bound in substances by physical connections, these connections mainly being expressed by the capillary forces.
  • the vapor pressure has to overcome the capillary pressure, which increases proportionally to the reduction in the porous structure.
  • temperatures are required which significantly exceed the temperature required for evaporation.
  • thermodynamic values of the substances deteriorate during the process.
  • the special feature of the present invention is to enable drying, grinding and weight-dependent separation and classification at the same time in a single device.
  • the device according to the invention consisting, among other things, of a housing 3, 19 and a rotating shaft 14 with a disk made of para- or diamagnetic material 11 and kinetic energy for dispersing the material in an electric or electromagnetic field an adjustable strength in the range of 10 3 V / m to 10 6 V / m, with simultaneous induction heating of the dispersion medium and the dispersion phase in an alternating magnetic field with a frequency of 500 to 12000 Hz with simultaneous separation of particles with a higher specific weight.
  • Induction heating by eddy currents is ensured by the use of permanent magnets 16 of alternating polarity, which are attached to the lower housing part 19 under the rotating disk made of diamagnetic material and can have different geometric shapes, for example a prism.
  • the technical result which is guaranteed by the above totality of the features, consists in the possibility of a controlled conductive and convective heating of the dispersed medium and the dispersion phase with simultaneous weighting and separation.
  • the wet input material with individual elements up to 100 mm in size is conveyed by means of a feed device and sluice lock 25 into the grinding chamber 24, where it is ground by the kinetic impact energy of the rotating and immovable grinding components 7, 9, 20, 21 and through the convective and conductive electrostatic drying is dewatered.
  • a unipolar induction charge of the aerosol takes place through an electrical or electromagnetic alternating field.
  • a unipolar charged aerosol with an adjustable degree of electrostatic charge is generated by inductive electrification.
  • the aerosol has a strong unipolar degree of electrical charge, a drastic decrease in the mean droplet size can be observed, which leads to an increase in the total evaporation surface.
  • the amount of energy required for a water-aerosol phase transition is therefore 300 to 400 kJ / liter.
  • the technical result consists in the enlargement of the entire evaporation surface and the corresponding separation and separation of liquid or liquid mixture, which is then carried out in a device according to the invention for the combined drying, grinding and separation of organic and / or inorganic substances and their mixtures, the aforementioned Processes as a result of grinding with simultaneous separation of one or more liquids from solid substances in the form of aerosols.
  • Figure 1 illustrates in a graphical sequence the crushing of a drop in a current during electrification, which the inventive method makes its own.
  • the process of the water-aerosol phase transition takes place within approx. 10 milliseconds.
  • Figure 2 discloses the basic principle of the device according to the invention.
  • the material input takes place through the connection piece for material feed 26 and further through the sluice lock 25 into the drying and grinding chamber 24.
  • the material is then ground by means of hammer plates 21 and the particles of the heterogeneous mixture are charged by the rotor 23 in a unipolar manner.
  • the material is repeatedly struck against the hollow plate 8 by the hammer plates 21, after which it flows through the impact grille 20, which is fixedly fixed on the hollow plate 8, and hits the impact pins 9 attached to the rotating disk 11 again behind the impact grille.
  • the induction heating generated by eddy currents and, accordingly, the required temperature and the amount of air flowing in through the air opening 17 can be controlled by the speed of the disk 11 and the number of air-blowing plates 10 and their angle of inclination.
  • the inflowing air blows onto the heated disk 11, heats up and conveys the material which has been comminuted by the hammer plates 21 via the air duct 18.
  • the comminuted material is thrown by the controllable air flow first against the hollow cone 8 and then over the sheet deflector 22 and returned to the grinding chamber.
  • the crushed material is partially separated by means of an air stream, and the lighter particles are removed therefrom by the tangential fan 2, and heavy particles are conveyed through the discharge opening 5 to the outside.
  • the tangential fan 2 rotates in the same direction as the rotor 23 and generates a controllable air pressure.
  • the hollow plate 8 is attached to the lower housing part 19 opposite the baffle plate 7 and has openings for the supply of heat carrier.
  • the adjusting screws 4 enable the volume of the process space 24 for drying and grinding to be regulated by raising and lowering the upper housing part 3.
  • a method for the combined removal of one or more liquids (drying), for grinding and separating organic and inorganic substances is based in particular on the use of kinetic energy for grinding substances with simultaneous conductive and convective heating of the resulting dispersion medium and the subsequent separation of dehydrated products , which are then processed depending on the specific weight.
  • Such further processing does not take place by supplying heat from an external source, but by means of kinetic and electromagnetic energy, which simultaneously causes the drying, grinding and separation of various organic and inorganic substances, including waste.
  • this method enables the simultaneous separation and drying of substances with a greatly reduced energy consumption compared to the conventional methods known up to now for crushing, pressing and / or evaporation of liquids and subsequent separation of these substances in different states of aggregation.
  • a device for the combined drying, grinding and separation of substances consisting of a housing and a rotating shaft with a rotating disk attached to it, which consists of a para- or diamagnetic material. Due to the kinetic and electromagnetic energy, various organic and inorganic substances are dispersed in an electromagnetic field in this device, the dispersion being simultaneously inductively heated by the eddy currents in an alternating magnetic field.
  • one or more liquids that separate out are converted into aerosols, with denser and / or heavier particles being separated and removed therefrom according to their specific weight.
  • the method according to the invention is based in particular on the use of kinetic energy for grinding substances with simultaneous conductive and convective heating of the dispersion medium obtained as a result and the subsequent separation of dehydrated products.
  • one or more liquids in the medium to be dried are converted into aerosols.
  • the inventive method enables simultaneous separation and drying with greatly reduced energy consumption.
  • the inventive device for combined drying, grinding and separating is an embodiment of a device with which the aforementioned method can be carried out.
  • It can consist of a housing and a rotating shaft with a rotating disk attached to it, which is made of a para- or diamagnetic material, but the provision of further parts is also possible as an alternative.
  • liquids that separate out are converted into aerosols, with denser and / or heavier particles being separated and removed therefrom according to their specific weight.
  • the device consists of fixed and moving parts.
  • the immovable part consists, among other things, of a housing with elements 3, 4, 5, 6, 8, 16, 17, 19, 22, 26, 27, 28 attached to it.
  • the moving part consists, among other things, of a shaft with all elements 7, 9, 10, 11, 13, 14, 15, 20, 21, 23 attached to it.
  • the movable part is isolated from the immovable part by the dielectric disk 13.
  • the charge is supplied to the entire rotating part via the contact plug 15. The charge eventually flows into the body.
  • Distance for the passage of a load is anywhere from 2 to 4 mm.
  • the electromagnetic field strength is regulated automatically or in manual mode by applying a voltage in the order of magnitude of 1 to 50 kV and based on the electromagnetic properties of the processed media.
  • the inventor has found that the effects described can occur and the desired field strengths can be set if a high voltage in the range from 1 to 50 kV is applied between the moving parts which rotate during operation of the device and to which the housing of the device, which can be grounded, has a minimum distance in the range from 1 to 50 mm, preferably a minimum distance of 2-4 mm.
  • the inventor has an optimal working point of the voltage, which is applied to rotating parts of the device as described above, in found in a range from approx. 24 kV to approx. 26 kV.
  • the inventor For the processing of moist sewage sludge as drying material in the device for drying and comminuting drying material, the inventor has an optimal working point of the voltage, which is as above, given the minimum distance of 2-4 mm described above described is applied to rotating parts of the device, found in a range from about 11 kV to about 15 kV.
  • the application speaks of an electromagnetic field, but only the electric field strength is given, the further characterization of the electromagnetic field with a known electric field results from the Maxwell equations, whereby the given electric field strength can indicate a maximum electric field strength of the electric field .
  • a field application device can comprise at least one, a plurality or all of the elements 7, 9, 10, 11, 13, 14, 15, 20, 21, 23 (see list of reference symbols and figures) and optionally additionally or alternatively the shaft 14 .
  • a fluid droplet which is present in the material to be dried can comprise a fluid which comprises a suspension of liquids and solids.
  • a fluid droplet can include, for example, insoluble or not yet dissolved particles suspended in wastewater, for example typical suspended matter that occurs in wastewater (e.g. excrement, leftover food, paper and similar substances).
  • a fluid droplet that is present in the material to be dried can be a suspension of solid parts of the material to be dried (or parts of the material to be dried which are already of a suitable size to form a suspension in a liquid) in a liquid portion of the material to be dried which has been comminuted by the comminution device 21 Include items to be dried.
  • a fluid droplet which is present in the item to be dried can, however, also only comprise liquid components of the item to be dried.
  • a region of the material to be dried can comprise (or be) a fluid drop, a particle or the like, but the region of the material to be dried can also be a volume section in which the material to be dried is located, the volume section preferably moving at an average speed therein items to be dried are moved along.
  • a volume section as a region of the item to be dried is preferably set in motion by the item to be dried located therein being set in motion.
  • organic and / or inorganic materials and their mixtures can be separated according to mechanical, electrophysical and magnetic properties.
  • the treatment of the materials can be carried out according to this method with the combined and preferably simultaneous action of kinetic energy and thermal energy and can be in electrical or magnetic or electromagnetic field under the kinetic energy conversion of the rotor.
  • the energy of electrical and magnetic fields can be converted into thermal energy for contacting and convective heating of the material to be processed, preferably with the use and effect of static fields from permanent magnets with a magnetic flux density of up to 1.4 T.
  • High-frequency currents in the range from 1 KA to 100 KA can occur and alternating magnetic fields with a frequency of 500 to 12000 Hz, preferably with a frequency of 500 to 2000 Hz, are used.
  • magnetic flux densities in the range from 1 to 10 T are proposed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Drying Of Solid Materials (AREA)

Claims (9)

  1. Dispositif pour le séchage et le broyage de matière à sécher, de préférence de matières organiques ou/et inorganiques ou/et de mélanges de celles-ci, comprenant :
    un boîtier (19),
    une chambre de traitement (24) qui peut être définie par le boîtier (19),
    et un dispositif de broyage (21) disposé dans la chambre de traitement (24) qui est adapté pour broyer la matière à sécher introduite dans la chambre de traitement (24) en utilisant de l'énergie cinétique,
    dans lequel le dispositif comprend un arbre (14) qui peut être mis en rotation et qui est adapté pour entraîner le dispositif de broyage (21),
    un dispositif d'application de champ pour un champ électrique ou électromagnétique qui est adapté pour générer un champ électrique ou électromagnétique au moins localement dans la chambre de traitement (24) avec une intensité de champ électrique réglable dans la plage de 103 V/m à 106 V/m qui est appropriée pour induire une déviation d'une forme de goutte par rapport à une forme sphérique d'une goutte de fluide présente dans la matière à sécher, ladite déviation d'une forme de goutte par rapport à une forme sphérique étant appropriée pour déclencher une fragmentation de ladite goutte de fluide pour séparer un ou plusieurs liquides sous forme d'aérosol,
    dans lequel ledit dispositif est adapté pour qu'au moins des portions respectives de ladite matière à sécher subissent simultanément une interaction avec le dispositif de broyage (21) et le champ électrique ou électromagnétique,
    dans lequel le dispositif est adapté pour disperser la matière à sécher dans la chambre de traitement (24),
    dans lequel le dispositif comprend en outre un dispositif d'application de champ pour un champ magnétique, qui est adapté pour exposer une région de la matière à sécher à un champ magnétique qui, vu depuis la région de la matière à sécher, est un champ magnétique alternatif local ayant une fréquence dans la plage de 500 Hz à 12.000 Hz et à travers lequel la région de la matière à sécher se déplace,
    dans lequel ladite région de ladite matière à sécher est exposée audit champ magnétique pour produire un chauffage par induction dans ladite portion de ladite matière à sécher en générant des courants de Foucault,
    dans lequel le dispositif d'application de champ pour un champ magnétique est disposé de manière localement fixe par rapport au boîtier (19) et est adapté pour générer un champ magnétique statique dans la chambre de traitement (24), ledit champ magnétique étant de préférence non homogène ;
    dans lequel le dispositif de broyage (21) est adapté pour mettre la région de la matière à sécher en mouvement relatif sous la forme d'une rotation par rapport au dispositif d'application de champ pour un champ magnétique, de sorte que le chauffage par induction est généré par le mouvement relatif de la région de la matière à sécher par le champ magnétique ;
    dans lequel l'arbre (14) est en outre adapté pour porter ledit dispositif d'application de champ pour un champ électrique ou électromagnétique qui est lié de manière solidaire en rotation audit arbre (14),
    ledit arbre (14) étant adapté pour appliquer audit dispositif d'application de champ une différence de potentiel par rapport audit boîtier (19) de préférence dans la plage de 1 à 50 kV, dans lequel, entre le dispositif d'application de champ pour un champ magnétique et la chambre de traitement (24), un disque (11) en para- ou diamagnétique est disposé de manière solidaire en rotation sur l'arbre (14), dans lequel le dispositif comprend en outre au moins une, de préférence plusieurs plaques de soufflage de médium ou plaques de soufflage d'air (10) qui est ou sont disposées de manière solidaire en rotation avec l'arbre (14), en particulier est ou sont fixées de manière solidaire en rotation au disque (11).
  2. Dispositif selon la revendication 1, dans lequel le dispositif d'application de champ pour un champ magnétique comprend une pluralité d'aimants permanents (16), dans lequel de préférence au moins deux, ou tous les aimants permanents (16) adjacents sont disposés avec une polarité alternée respectivement, dans lequel de préférence au moins deux aimants permanents (16) sont formés avec une forme géométrique différente.
  3. Dispositif selon l'une des revendications 1 à 2, dans lequel le disque est isolé de l'arbre (14), en particulier isolé par un disque diélectrique (13).
  4. Dispositif selon l'une des revendications 1 à 3, dans lequel une position spatiale du dispositif d'application de champ pour un champ magnétique, de préférence une position spatiale d'au moins un ou plusieurs ou tous les aimants permanents (16), en particulier par rapport à une distance du disque (11), est variable ou/et réglable.
  5. Dispositif selon l'une des revendications précédentes, dans lequel le dispositif comprend en outre un dispositif d'alimentation de milieu de chauffage (17) adapté pour fournir un milieu de chauffage, par exemple de l'air chauffé ou un gaz chauffé, à la chambre de traitement (24).
  6. Dispositif selon l'une des revendications précédentes, dans lequel le dispositif comprend en outre un dispositif de distribution pour distribuer de la matière à sécher, dans lequel le dispositif de distribution comprend de préférence une ouverture de décharge (6) dans un déflecteur d'arc (22) du dispositif pour distribuer des particules plus lourdes de la matière à sécher, dans lequel le déflecteur d'arc (22) est de préférence adapté pour diriger la matière à sécher vers le dispositif de broyage (21) ;
    dans lequel un mécanisme (5) du dispositif est de préférence prévu à l'ouverture de décharge (6) pour décharger les particules plus lourdes de la matière à sécher du dispositif.
  7. Procédé de séchage et de broyage de matière à sécher, de préférence de matières organiques ou/et inorganiques ou/et de mélanges de celles-ci, comprenant les étapes suivantes :
    - introduction de la matière à sécher dans une chambre de traitement (24),
    - broyage de la matière à sécher dans la chambre de traitement (24) en utilisant de l'énergie cinétique au moyen d'un dispositif de broyage (21) entraîné par un arbre (14),
    - application d'un champ électrique ou électromagnétique d'intensité réglable sur la matière à sécher par un dispositif d'application de champ pendant l'étape de broyage de la matière à sécher pour séparer un ou plusieurs liquides sous forme d'aérosol, le dispositif d'application de champ étant porté par l'arbre (14) et étant relié de manière solidaire en rotation à l'arbre (14),
    - le champ électrique ou électromagnétique ayant, au moins localement dans la chambre de traitement (24), une intensité de champ électrique dans la plage de 103 V/m à 106 V/m qui est appropriée pour induire une déviation d'une forme de goutte par rapport à une forme sphérique d'une goutte de fluide présente dans ladite matière à sécher,
    - la déviation d'une forme de goutte par rapport à une forme sphérique étant appropriée pour induire une fragmentation de ladite goutte de fluide pour séparer un ou plusieurs liquides sous forme d'aérosol,
    dans lequel au moins des portions respectives de ladite matière à sécher subissant simultanément une interaction avec le dispositif de broyage (21) et le champ électrique ou électromagnétique,
    dans lequel le procédé comprend une étape de dispersion de la matière à sécher dans la chambre de traitement (24),
    dans lequel le dispositif comprend en outre une étape d'application d'un champ magnétique à une région de la matière à sécher pour produire un chauffage par induction dans cette région ou une portion de la matière à sécher en générant des courants de Foucault,
    dans lequel le champ magnétique, vu depuis la région de la matière à sécher, est un champ magnétique alternatif local ayant une fréquence dans la plage de 500 Hz à 12.000 Hz ; et
    dans lequel la région de la matière à sécher est déplacée en mouvement relatif sous la forme d'une rotation à travers le champ magnétique en utilisant un disque rotatif (11) d'un matériau diamagnétique ou paramagnétique et au moins une plaque de soufflage de médium ou une plaque de soufflage d'air reliée de manière solidaire en rotation au disque rotatif (11) de sorte que le chauffage par induction est produit par le mouvement relatif de la région de la matière à sécher à travers le champ magnétique.
  8. Dispositif selon la revendication 7, comprenant en outre une étape d'introduction d'un médium de chauffage, tel que de l'air chauffé ou un gaz chauffé, dans la chambre de traitement (24).
  9. Dispositif selon la revendication 7 ou 8, comprenant en outre une étape d'élimination des particules de gravité spécifique supérieure, de préférence pendant au moins une étape, de préférence toutes les étapes du procédé.
EP19167853.1A 2018-04-13 2019-04-08 Dispositif et procédé de séchage, de broyage et de séparation de produits à sécher Active EP3553437B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018205677.3A DE102018205677A1 (de) 2018-04-13 2018-04-13 Vorrichtung und Verfahren zum Trocknen, Zerkleinern und Abscheiden von Trocknungsgut

Publications (2)

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EP3553437A1 EP3553437A1 (fr) 2019-10-16
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CN113446816B (zh) * 2021-04-28 2022-07-01 四川国沃生物科技有限公司 一种有机肥粉碎及烘干装置
CN113776303A (zh) * 2021-10-12 2021-12-10 中国十七冶集团有限公司 一种给排水工程用脱水机及其脱水方法
CN113686101B (zh) * 2021-10-27 2022-01-11 山东泰诺药业有限公司 一种低温流化床干燥机
CN115523723B (zh) * 2022-09-16 2024-05-17 中国矿业大学 一种低阶煤的离心热载气联合脱水方法
CN116045609A (zh) * 2022-12-23 2023-05-02 河北天成药业股份有限公司 一种盐酸二甲双胍片制备用沸腾干燥机

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