FR2578964A1 - Industrial deep freezer or dryer with fluidised bed and with a high retaining power for the fines - Google Patents
Industrial deep freezer or dryer with fluidised bed and with a high retaining power for the fines Download PDFInfo
- Publication number
- FR2578964A1 FR2578964A1 FR8503721A FR8503721A FR2578964A1 FR 2578964 A1 FR2578964 A1 FR 2578964A1 FR 8503721 A FR8503721 A FR 8503721A FR 8503721 A FR8503721 A FR 8503721A FR 2578964 A1 FR2578964 A1 FR 2578964A1
- Authority
- FR
- France
- Prior art keywords
- freezer
- screw
- dryer
- dryer according
- freezing
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
- F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
- F25D13/067—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space with circulation of gaseous cooling fluid
-
- 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
- F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
- F26B11/181—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement
-
- 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
- F26B3/092—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 agitating the fluidised bed, e.g. by vibrating or pulsating
- F26B3/0923—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 agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
La présente invention se rapporte à un surgélateur ou sécheur industriel à lit fluidisé présentant un fort pouvoir de rétention des fines ou et matières pulvérulentes. The present invention relates to an industrial freezer or dryer with a fluidized bed having a high retention capacity for fines or pulverulent materials.
Les moyens employés conviennent également dans des applications de refroidissement simple ou de séchage. The means used are also suitable in simple cooling or drying applications.
Les nécessités de surgélation de quantités importantes en continu sont devenues fréquentes dans nos sociétés modernes. The need to freeze large quantities continuously has become common in our modern societies.
Cette demande provient non seulement des industries alimentaires, mais aussi des centres de traitement des ordures ménagères, depuis l'invention du procédé de tri des matières plastiques par cryogé- nisation. This demand comes not only from the food industries, but also from household waste treatment centers, since the invention of the process of sorting plastics by cryogenization.
En effet, des inventeurs étrangers ont is au point un procédé et l'installation pour le mettre en oeuvre, perrnettant de trier les matières plastiques avant leur incinération. On a constaté que l'incinération deswmatières plastiques du type en ou contenant du polychlorure de vinyle représente une des principales sources de pollution de l'atmosphère en produits acides. Indeed, foreign inventors have perfected a process and the installation for implementing it, allowing the sorting of plastics before their incineration. It has been found that the incineration of plastic materials of the type containing or containing polyvinyl chloride represents one of the main sources of pollution of the atmosphere with acid products.
Connaissant les méfaits des pluies acides sur les végétaux, on comprend tout l'intérêt de ce procédé qui a pour but de débarrasser I es déchets ménagers avant incinération des objets, produits et composantes diverses de toutes formes en ces matières plastiques ou contenant ces matières. Knowing the harmful effects of acid rain on plants, we understand the value of this process which aims to rid Ies household waste before incineration of objects, products and various components of all forms in these plastics or containing these materials.
La mise en oeuvre industrielle de ce procédé réclame des surgélateurs de grande capacité conçus pour refroidir en continu à -400 C des quantités importantes de produits ou déchets. The industrial implementation of this process requires large capacity freezers designed to cool continuously at -400 C large quantities of products or waste.
Par ailleurs, en raison de l'infini diversité des déchets, du désintéressement total et de la parfaite négligence liée à l'évacuation de ceux-ci, de nombreuses poussières, fines et autres formes pulvérulentes envahissent l'atmosphère des lieux de manipulation et de traitement. In addition, due to the infinite diversity of waste, the total lack of interest and the perfect negligence linked to the evacuation of this, many dusts, fines and other powdery forms invade the atmosphere of places of handling and treatment.
Il fallait donc, pour garantir une fiabilité suffisante, pouvoir préserver les organes associés de fonctionnement du groupe frigorifique ou de séchage d'un enrobage néfaste par tes poussières et fines dégagées de la masse des déchets par le passange transversal de l'air froid ou chaud. It was therefore necessary, in order to guarantee sufficient reliability, to be able to preserve the associated organs of operation of the refrigerating unit or of drying a harmful coating by your dust and fines released from the mass of waste by the transverse passange of cold or hot air. .
Il n'existe pas, à l'heure actuel le, de surgélateur industriel adapté, en raison de ta difficulté technique de maîtriser les produits légers qui seraient entraînés dans le courant d'air frigorigène pour des quantités importantes traitées, de l'ordre de 10 tonnes/heure. At the present time, there is no suitable industrial freezer, due to your technical difficulty in controlling the light products which would be entrained in the refrigerant air flow for large quantities processed, of the order of 10 tonnes / hour.
En effet, les surgélateurs classiques à tunnel ne permettent pas d'atteindre les performances nécessaires. Indeed, conventional tunnel freezers do not achieve the necessary performance.
La présente invention a pour but de remé- dier simultanément aux deux inconvénients ci-dessus que l'on rencontre bien entendu sur -les déchets mena- gers, mais aussi dans la surgélation industriel le des produits alimentaires et dans le séchage industriel, en proposant un surgélateur ou un sécheur industriel permettant de satisfaire aux besoins de mise en oeuvre industriel le du procédé. The object of the present invention is to remedy simultaneously the two above drawbacks which are of course encountered on household waste, but also in industrial freezing of food products and in industrial drying, by proposing an industrial freezer or dryer to meet the industrial implementation needs of the process.
A cet effet, I'invention se rapporte à un surgélateur ou sécheur industriel caractérisé par l'utilisation d'une vis cylindrique montée dans une enveloppe perforée, traversée sur toute sa longueur en continu par l'air de congélation ou de séchage, le pas de la vis étant plus important à l'entrée du produit selon le type d'application visée. To this end, the invention relates to an industrial freezer or dryer characterized by the use of a cylindrical screw mounted in a perforated envelope, traversed over its entire length continuously by the freezing or drying air, the pitch of the screw being more important at the entry of the product according to the type of intended application.
Les moyens ci-dessus permettent de viser d'autres applications telles que le redroidissement simple, le séchage, le traitement par flux gazeux et similaires. The above means make it possible to target other applications such as simple cooling, drying, treatment by gas flow and the like.
Le surgélateur ou le sécheur à vis conforme à l'invention permettant d'obtenir les résultats et performances indiqués de façon générale ci-dessus, présente les avantages suivants
grande capacité et vitesse de surgélation ou de
séchage ;
brassage efficace du produit lui assurant une
aptitude exceptionnel le à ia fluidisation . possibiSité de de travailler efficacement en couche
mince (croutage) par simple augmentation du pas
de la vis à l'entrée
aptitude particulière à la surgélation ou au séchage de produits légers ou en feu ;
. possibilité de réaliser une isolation thermique
double à haut rendement.The freezer or screw dryer in accordance with the invention which makes it possible to obtain the results and performances indicated in general above, has the following advantages
large capacity and speed of freezing or
drying;
efficient mixing of the product ensuring
exceptional ability to ia fluidization. possibility of working effectively in layers
thin (crusting) by simply increasing the pitch
of the screw at the entrance
particular aptitude for freezing or drying light or burning products;
. possibility of thermal insulation
double high efficiency.
. de nombreuses applications de traitement en
échange thermique par un flux gazeux.. many processing applications in
heat exchange by a gas flow.
D'autres caractéristiques et avantages de la présente invention sont consignés dans la description qui suit, effectuée à titre d'exemple non limitatif sur un mode d'exécution en référence au dessin accompagnant dans lequel
. la figure 1 est une vue en coupe longitudinale
verticale du surgélateur ou sécheur à entrée par
trémie pour produits homogènes granuleux ou pulvérulents
. la figure 2 est une vue en coupe longitudinale
verticale partielle montrant l'alimentation et
l'entrée du surgélateur ou sécheur dans le cas
d'un barillet d'étanchéité et d'une vis à pas
variable
la figure 3 est une vue en coupe transversale au
niveau de l'entraînement et du groupe d'insuf
flation et de reprise.Other characteristics and advantages of the present invention are set out in the description which follows, given by way of nonlimiting example on an embodiment with reference to the accompanying drawing in which
. Figure 1 is a longitudinal sectional view
vertical of the freezer or dryer with
hopper for homogeneous granular or powdery products
. Figure 2 is a longitudinal sectional view
partial vertical showing feeding and
the entrance to the freezer or dryer in the case
a sealing barrel and a pitch screw
variable
Figure 3 is a cross-sectional view at
level of training and insuff group
flation and recovery.
On décrira ci-après les moyens généraux de
I'invention correspondant à l'idée générale inventive qui consiste à faire traverser l'enveloppe perforée tubulaire dans laquelle tourne une vis d'avance du produit par un courant d'air de congélation, de refroidissement ou de séchage, bénéficiant ainsi des meilleures conditions de fluidisation, le produit étant en brassage et sustentation constante pendant tout son transit vers la sortie.The general means of
The invention corresponding to the general inventive idea which consists in passing the tubular perforated envelope through which a screw for advancing the product turns by a stream of freezing, cooling or drying air, thus benefiting from the best conditions fluidization, the product being stirred and constant lift throughout its transit to the outlet.
Plus précisément, I'instdllation utilise pour surgeler er ou sécher les matières, déchets ménagers ou produits alimentaires en continu se compose d'un dispositif d'alimentation 1 alimenté par un tapis roulant 2 en communication avec le surgélateur ou sécheur proprement dit, formé d'une vis 3 à pas fixe, variable ou progressif montée sur un axe 4 tubulaire creux et dans une enveloppe cylindrique perforée 5 animée d'un mouvement de rotation autour de son axe longitudinal coincidant avec l'axe tubulaire 4. More specifically, the installation used to freeze and dry materials, household waste or continuous food products consists of a feed device 1 powered by a conveyor belt 2 in communication with the freezer or dryer proper, formed of 'A screw 3 with fixed, variable or progressive pitch mounted on a hollow tubular axis 4 and in a perforated cylindrical envelope 5 driven by a rotational movement around its longitudinal axis coinciding with the tubular axis 4.
L'ensemble est monté à rotation autour de paliers de guidage tels que 6 et entraîneur 7 par l'intermédiaire par exemple de couronnes dentées 8 actionnées par un mécanisme approprié. The assembly is rotatably mounted around guide bearings such as 6 and driver 7 by means, for example, of toothed rings 8 actuated by an appropriate mechanism.
A l'arrière de l'enveloppe, un ensemble de déversement, par exemple à gouttière inclinée 9, permet le déversement du produit à partir de la sortie centrale 10 jusqu'à un tapis de reprise 11 pour l'acheminement vers les installations de broyage et de tri, dans le cas de déchets ménagers, ou vers la ligne de conditionnement dans les installations de surgélation pour produits alimentaires ou de reprise des matières sèches. At the rear of the envelope, a discharge assembly, for example with an inclined gutter 9, allows the discharge of the product from the central outlet 10 to a take-up belt 11 for routing to the grinding installations and sorting, in the case of household waste, or to the packaging line in freezing facilities for food products or recovery of dry materials.
Des parois latérales d'isolation thermique avant 12 et arrière 13 protègent le volume intérieur de l'enceinte 14 ainsi que les chambres d'insufflation 15 et de récupération 16 des échanges thermiques. Cette isolation est complétée par
l'isolation générale de l'ensemble par des parois à fort pouvoir d'isolation thermique. L'ensemble est traversé par un flux d'air de traitement à température adaptée.Front thermal insulation 12 and rear 13 lateral walls protect the interior volume of the enclosure 14 as well as the insufflation 15 and recovery 16 chambers from heat exchanges. This insulation is completed by
general insulation of the assembly by walls with high thermal insulation power. The whole is traversed by a flow of treatment air at a suitable temperature.
Une étanchéité par joints souples 17 et 18 en contact avec l'-enveloppe cylindrique 5 sépare les chambres 15 et 16 et force le courant d'air à traverser ladite enveloppe 5. A seal by flexible joints 17 and 18 in contact with the cylindrical envelope 5 separates the chambers 15 and 16 and forces the air current to pass through said envelope 5.
Le dispositif d'alimentation 1 est formé soit d'une trémie de chargement 19 suivie d'une goulotte de déversement 20 chargeant par gravité leproduit à surgeler ou à sécher à l'entrée de l'ensemble. The feed device 1 is formed either of a loading hopper 19 followed by a discharge chute 20 loading by gravity the product to be frozen or dried at the entrance to the assembly.
Dans une version perfectionnée, le dispositif d'alimentation 1 comprend un sas d'admission 21 par exemple à barillet dont la sortie est raccordée à un conduit de déversement 22 tel que repésenté en figure 2. Un sas adapté, par exemple du même type, est prévu en sortie. In an improved version, the supply device 1 comprises an inlet airlock 21, for example with a barrel, the outlet of which is connected to a discharge conduit 22 as shown in FIG. 2. An adapted airlock, for example of the same type, is planned for output.
Cette variante permet d'amelioler notablement l'isolation thermique -en évitant une entrée d'air extérieur dans l'enceinte et en supprimant le pont thermique provenant de la masse du produit à surgeler ou à sécher. This variant makes it possible to improve the thermal insulation notably by avoiding an entry of outside air into the enclosure and by eliminating the thermal bridge coming from the mass of the product to be frozen or dried.
Pour favoriser la surgélation en couches minces (croûtage), on emploie une vis à pas progressif 23, plus grand à l'entrée- du produit et diminuant ensuite. To promote deep-layer freezing (crusting), a progressive-pitch screw 23 is used, which is larger at the entry of the product and then decreases.
La sustentation et l'échange frigorifique s'avèrent notablement plus rapides dans le volume d'entrée 24 de la vis, ce qui permet de former la couche mince extérieure dès la première phase d'entrée et de progression du produit à l'intérieur de l'ensemble de surgélation. Le produit ainsi protégé par une croûte rigide s' avère notablement nains sensible aux divers chocs et contraintes mécaniques auxquels il est soumis pendant l'opération de surgélation. The lift and the refrigeration exchange prove to be notably faster in the entry volume 24 of the screw, which makes it possible to form the outer thin layer from the first phase of entry and progression of the product inside the freezing unit. The product thus protected by a rigid crust is found to be notably dwarf sensitive to the various shocks and mechanical stresses to which it is subjected during the freezing operation.
En effet, les produits sont en constante sustentation et mouvements de par la rotation et le courant d'air froid à fort débit. Indeed, the products are in constant lift and movement due to the rotation and the cold air flow at high flow.
L'enveloppe extérieure métallique, plus froide que le produit lui même, constitue un véritable piège pour les matières à faible granillomé- trie emportées par le courant d'air froid
Ces matières retenues par l'enveloppe extérieure 5 restent ainsi à l'intérieur du volume hélicoïdal de surgélation, laissant les chambres d'insufflation 15 et de récupération I6 exemptes de toutes matières légères qui seraient emportées par le f I ux d'air et viendraient se déposer sur les organes de fonctionnement, en particulier les batteries du groupe frigorifique ou les échangeurs des groupes chauffants.The metallic outer shell, cooler than the product itself, constitutes a real trap for low-granillometry materials carried away by the cold air flow
These materials retained by the outer casing 5 thus remain inside the helical freezing volume, leaving the insufflation chambers 15 and recovery I6 free of any light materials which would be carried away by the air flow and would come settle on the operating components, in particular the refrigeration unit batteries or the heating group exchangers.
Cet inconvénient, particulièrement sensible dans le traitement des déchets ménagers, disparaît totalement avec l'invention. This drawback, which is particularly significant in the treatment of household waste, disappears completely with the invention.
Le procédé selon l'invention consiste à surgeler, à refroidir ou à sécher des matières par passage dans un ensemble rotatif formé d'une vis à pas fixe ou variable et d'une enveloppe extérieure perforée traversée sur toute sa longueur par un flux d'air refroidisseur ou asséchant. The method according to the invention consists in deep-freezing, cooling or drying materials by passing through a rotary assembly formed by a screw with fixed or variable pitch and by a perforated outer casing traversed over its entire length by a flow of air cooler or drying.
Le procédé de surgélation avec croutage consiste à utiliser une vis à pas variable, progressif, à pas plus important à l'entree. The crust freezing process consists of using a variable pitch screw, progressive, with a larger pitch at the entrance.
L'invention a été décrite ci-dessus à propos d'une réalisation particulière ; il est bien entendu qu'elle ne saurait s'y limiter et que diverses modifications sùns apport invention entrent par fqitement dans son cadre. The invention has been described above in connection with a particular embodiment; it is understood that it cannot be limited thereto and that various modifications to the invention contribution fall within its scope.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8503721A FR2578964B1 (en) | 1985-03-12 | 1985-03-12 | FREEZER OR INDUSTRIAL DRYER WITH A FLUIDIZED BED AND A STRONG RETENTION POWER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8503721A FR2578964B1 (en) | 1985-03-12 | 1985-03-12 | FREEZER OR INDUSTRIAL DRYER WITH A FLUIDIZED BED AND A STRONG RETENTION POWER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2578964A1 true FR2578964A1 (en) | 1986-09-19 |
| FR2578964B1 FR2578964B1 (en) | 1988-12-09 |
Family
ID=9317166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8503721A Expired FR2578964B1 (en) | 1985-03-12 | 1985-03-12 | FREEZER OR INDUSTRIAL DRYER WITH A FLUIDIZED BED AND A STRONG RETENTION POWER |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2578964B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999035456A1 (en) * | 1997-12-30 | 1999-07-15 | George Robert Wallace | Agricultural crop drier |
| FR2811745A1 (en) * | 2000-07-13 | 2002-01-18 | Etia Evaluation Technologique | Method of refrigerating particulate solids involves fluidizing particulates using cooling gas while passing them along cold wall surface |
| WO2007134656A1 (en) | 2006-05-22 | 2007-11-29 | Ijzerlo Holding B.V. | Dryer for free-flowing material to be dried and a method for operating a dryer |
| WO2008132580A1 (en) * | 2007-04-30 | 2008-11-06 | Frederick Willem Teseling | Dryer for granular material |
| WO2013002625A2 (en) * | 2011-06-27 | 2013-01-03 | Universite Sidi Mohamed Ben Abdellah | Fluidised bed dryer having an archimedean screw |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB264633A (en) * | 1925-11-20 | 1927-01-27 | Uno Company Ltd | Improvements in apparatus for cooling granular, powdered and like materials |
| DE562707C (en) * | 1931-01-10 | 1932-11-08 | Demag Akt Ges | Rotatable drum dryer or rotating vessel |
| US2284270A (en) * | 1938-12-24 | 1942-05-26 | Stokely Brothers & Company Inc | Method and apparatus for grading and individually freezing various articles |
| FR888387A (en) * | 1942-04-23 | 1943-12-10 | Rotary dryer for seeds, pulps, powders and cut pasta | |
| US3300993A (en) * | 1964-02-25 | 1967-01-31 | Alfred H Schlemmer | Freezing apparatus and method |
| US3395549A (en) * | 1966-11-16 | 1968-08-06 | Marine Constr & Design Co | Process and apparatus for quick freezing of food bodies |
| BE788006A (en) * | 1972-08-25 | 1972-12-18 | Briet Pierre | TRANSPORT SCREWS. |
| FR2354523A1 (en) * | 1976-06-08 | 1978-01-06 | Kobe Steel Ltd | METHOD AND APPARATUS FOR HEATING SOLID SUBSTANCES TO REDUCE THEIR VOLATILE MATTER CONTENT |
| FR2402421A1 (en) * | 1977-09-07 | 1979-04-06 | Stef | Spray freezing powder prodn. e.g. egg, from air injected fluid - in freezing chamber which vents air but collects prod. without diffusion |
| FR2512533A1 (en) * | 1981-09-10 | 1983-03-11 | Air Liquide | DEVICE AND METHOD FOR COOLING BULK PRODUCTS |
| EP0077889A2 (en) * | 1981-09-24 | 1983-05-04 | Asahi Glass Company Ltd. | Apparatus for drying or heating a particulate material |
| EP0109210A2 (en) * | 1982-10-29 | 1984-05-23 | Air Products Limited | Freezer |
-
1985
- 1985-03-12 FR FR8503721A patent/FR2578964B1/en not_active Expired
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB264633A (en) * | 1925-11-20 | 1927-01-27 | Uno Company Ltd | Improvements in apparatus for cooling granular, powdered and like materials |
| DE562707C (en) * | 1931-01-10 | 1932-11-08 | Demag Akt Ges | Rotatable drum dryer or rotating vessel |
| US2284270A (en) * | 1938-12-24 | 1942-05-26 | Stokely Brothers & Company Inc | Method and apparatus for grading and individually freezing various articles |
| FR888387A (en) * | 1942-04-23 | 1943-12-10 | Rotary dryer for seeds, pulps, powders and cut pasta | |
| US3300993A (en) * | 1964-02-25 | 1967-01-31 | Alfred H Schlemmer | Freezing apparatus and method |
| US3395549A (en) * | 1966-11-16 | 1968-08-06 | Marine Constr & Design Co | Process and apparatus for quick freezing of food bodies |
| BE788006A (en) * | 1972-08-25 | 1972-12-18 | Briet Pierre | TRANSPORT SCREWS. |
| FR2354523A1 (en) * | 1976-06-08 | 1978-01-06 | Kobe Steel Ltd | METHOD AND APPARATUS FOR HEATING SOLID SUBSTANCES TO REDUCE THEIR VOLATILE MATTER CONTENT |
| FR2402421A1 (en) * | 1977-09-07 | 1979-04-06 | Stef | Spray freezing powder prodn. e.g. egg, from air injected fluid - in freezing chamber which vents air but collects prod. without diffusion |
| FR2512533A1 (en) * | 1981-09-10 | 1983-03-11 | Air Liquide | DEVICE AND METHOD FOR COOLING BULK PRODUCTS |
| EP0077889A2 (en) * | 1981-09-24 | 1983-05-04 | Asahi Glass Company Ltd. | Apparatus for drying or heating a particulate material |
| EP0109210A2 (en) * | 1982-10-29 | 1984-05-23 | Air Products Limited | Freezer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999035456A1 (en) * | 1997-12-30 | 1999-07-15 | George Robert Wallace | Agricultural crop drier |
| FR2811745A1 (en) * | 2000-07-13 | 2002-01-18 | Etia Evaluation Technologique | Method of refrigerating particulate solids involves fluidizing particulates using cooling gas while passing them along cold wall surface |
| WO2007134656A1 (en) | 2006-05-22 | 2007-11-29 | Ijzerlo Holding B.V. | Dryer for free-flowing material to be dried and a method for operating a dryer |
| WO2008132580A1 (en) * | 2007-04-30 | 2008-11-06 | Frederick Willem Teseling | Dryer for granular material |
| WO2013002625A2 (en) * | 2011-06-27 | 2013-01-03 | Universite Sidi Mohamed Ben Abdellah | Fluidised bed dryer having an archimedean screw |
| WO2013002625A3 (en) * | 2011-06-27 | 2014-05-08 | Universite Sidi Mohamed Ben Abdellah | Fluidised bed dryer having an archimedean screw |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2578964B1 (en) | 1988-12-09 |
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