FR2566106A1 - Process and plant for drying by blowing air with percussion for fruits and vegetables - Google Patents
Process and plant for drying by blowing air with percussion for fruits and vegetables Download PDFInfo
- Publication number
- FR2566106A1 FR2566106A1 FR8409343A FR8409343A FR2566106A1 FR 2566106 A1 FR2566106 A1 FR 2566106A1 FR 8409343 A FR8409343 A FR 8409343A FR 8409343 A FR8409343 A FR 8409343A FR 2566106 A1 FR2566106 A1 FR 2566106A1
- Authority
- FR
- France
- Prior art keywords
- air
- layers
- drying
- temperature
- percussion
- 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.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/02—Dehydrating; Subsequent reconstitution
- A23B7/0205—Dehydrating; Subsequent reconstitution by contact of the material with fluids, e.g. drying gas or extracting liquids
-
- 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
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/08—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being arranged in a sinuous or zig-zag path
-
- 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
L'invention concerne le séchage dynamique par ventilation d'air des fruits et légumes, disposés en couches, plus particulièrement des prunes d'Ente destinées à la fabrication de pruneaux, bien que l'installation envisagée puisse sans modification de conception être utilisée pour le traitement d'autres variétés de fruits ou légumes. The invention relates to the dynamic drying by air ventilation of fruits and vegetables, arranged in layers, more particularly Ente plums intended for the manufacture of prunes, although the installation envisaged can be used without design modification for the processing other varieties of fruit or vegetables.
Le séchage actuel des prunes d'Ente est exclusivement réalisé par ventilation d'air en flux parallèles aux couches de fruits, c'est-à-dire travaillant en "léchage". Cette technique de séchage conduit à une qualité irrégulière de pruneaux et à une consommation énergétique élevée. The current drying of Ente plums is exclusively carried out by air ventilation in flows parallel to the layers of fruit, that is to say working in "licking". This drying technique leads to irregular quality of prunes and high energy consumption.
Le but de l'invention est de proposer un procédé et une installation de séchage assurant, d'une part, une très bonne qualité du fruit traité, permettant ainsi un aréage dans de meilleures conditions, et d'autre part, améliorant considérablemen tle coût énergétique du séchage. The object of the invention is to propose a drying method and installation ensuring, on the one hand, a very good quality of the treated fruit, thus allowing a areing in better conditions, and on the other hand, considerably improving the cost. energy of drying.
Ce but est atteint selon l'invention par le fait qu'on assure une ventilation par percussion grâce au soufflage d'air chaud homogène en vitesse et en température, au travers de et sensiblement perpendiculairement auxdites couches. This object is achieved according to the invention by the fact that ventilation is provided by percussion by blowing hot air uniform in speed and temperature, through and substantially perpendicular to said layers.
L'un des avantages du soufflage "par percussion" est d'assurer simultanément sur chaque parcelle de fruits, un soufflage constant et homogène, et d'améliorer considérablement le contact du produit par rapport au soufflage longitudinal en "léchage". Dans cette dernière technique l'air se chargeait d'humidité plus il avançait le long des couches de fruits, et les derniers fruits traités l'étaient tout différemment des premiers. One of the advantages of blowing "by percussion" is to ensure simultaneously on each plot of fruit, a constant and homogeneous blowing, and to considerably improve the contact of the product compared to the longitudinal blowing in "licking". In this last technique the air was charged with humidity the more it advanced along the layers of fruit, and the last treated fruits were quite different from the first.
Avantageusement, on souffle l'air chaud verticalement de bas en haut, quoiqu'on puisse aussi souffler de haut en bas. Advantageously, the hot air is blown vertically from bottom to top, although one can also blow from top to bottom.
Selon un aspect particulièrement intéressant de l'invention, on dispose les couches sur au moins un tapis transporteur perméable à l'air et circulant le long d'un trajet de traitement, et on règle sélectivement le débit d'air, la température et/ou la siccité de l'air ventilé sur certaines zones du trajet de traitement. According to a particularly advantageous aspect of the invention, the layers are placed on at least one air permeable conveyor belt circulating along a treatment path, and the air flow rate, the temperature and / are selectively adjusted. or the dryness of the ventilated air in certain areas of the treatment path.
L'invention concerne aussi une installation de séchage qui comprend des moyens de ventilation par percussion assurant un soufflage d'air chaud homogène en vitesse et en température, au travers de et sensiblement perpendiculairement auxdites couches. The invention also relates to a drying installation which comprises percussion ventilation means ensuring a uniform blowing of hot air in speed and temperature, through and substantially perpendicular to said layers.
L'installation comprend au moins un tapis transporteur perméable à l'air. En fait, elle comprend avantageusement plusieurs tapis superposés : le nombre de trois tapis superposés d'une vingtaine de mètres de long pour environ 2,5m de large s'est avéré particulièrement favorable au séchage des prunes d'Ente, quand au moins certains des tapis superposés sont associés à des circuits d'air distincts pour régler sélectivement le débit, la température etlou la siccité de l'air. La capacité de traitement peut alors atteindre 15 à 20 tonnes par jour selon la qualité des prunes.The installation includes at least one breathable conveyor belt. In fact, it advantageously comprises several superimposed mats: the number of three superimposed mats of around twenty meters long and about 2.5m wide has proved particularly favorable for the drying of Ente plums, when at least some of the stacked belts are associated with separate air circuits to selectively regulate the flow rate, temperature and / or dryness of the air. The processing capacity can then reach 15 to 20 tonnes per day depending on the quality of the plums.
Plus précisément, l'installation conforme à l'invention comporte un tunnel de séchage calorifugé en panneaux métalliques garnis intérieurement d'une épaisseur de 120mm de laine minérale. More specifically, the installation according to the invention comprises a heat-insulated drying tunnel made of metal panels lined internally with a thickness of 120 mm of mineral wool.
Dans le tunnel sont disposés trois tapis métalliques, superposés, chacun d'entre eux étant équipé d'une gaine de soufflage distincte, disposée sous toute la surface utile de séchage du tapis. In the tunnel are placed three superimposed metal belts, each of them being equipped with a separate blowing sheath, arranged under the entire useful surface for drying the carpet.
Les fruits entrent de façon continue dans le tunnel par le tapis supérieur, puis après une longueur de tunnel, se renversent par l'intermédiaire de glissières fixes, vers le second tapis intermédiaire, et enfin sur le tapis inférieur pour ressortir de l'installation du côté opposé au côté de chargement. The fruit enters the tunnel continuously through the upper belt, then after a length of tunnel, overturns via fixed slides, towards the second intermediate belt, and finally on the lower belt to exit the installation of the side opposite the loading side.
Le tunnel, n'étant équipé que de trois tapis, offre un important avantage par rapport aux tunnels en continu existants, par le fait que les fruits sont moins perturbés et malmenés puisque seulement deux renversements sont nécessaires à leurs parcours dans la machine. The tunnel, being equipped with only three belts, offers an important advantage compared to the existing continuous tunnels, by the fact that the fruits are less disturbed and mistreated since only two reversals are necessary for their journeys in the machine.
Chaque étage peut disposer d'un réglage indépendant de la vitesse d'air et de la température. Each stage can have an independent adjustment of the air speed and the temperature.
Ce dispositif permet de moduler les caractéristiques de l'air soufflé en fonction de la qualité du fruit traité et surtout en fonction de son stade de séchage. En effet, le tunnel étant équipé de trois tapis, chacun d'entre eux correspond au tiers du temps total de séchage. This device makes it possible to modulate the characteristics of the air blown according to the quality of the fruit treated and especially according to its stage of drying. Indeed, the tunnel being equipped with three mats, each of them corresponds to a third of the total drying time.
Le séchoir est équipé sur sa partie supérieure, de devez groupes de chauffage et de ventilation ; le premier groupe pour l'alimentation du premier tapis supérieur, et le second groupe pour l'alimentation des étages médian et inférieur. The dryer is equipped on its upper part with heating and ventilation units; the first group for the supply of the first upper belt, and the second group for the supply of the middle and lower floors.
L'un des objectifs de l'invention étant de réduire la consommation énergétique (garantir une consommation maximale de 1kW par kilogramme d'eau évaporée), il est intéressant de prévoir, au niveau d'une extraction d'air humide, un récupérateur. One of the objectives of the invention being to reduce energy consumption (guarantee a maximum consumption of 1 kW per kilogram of evaporated water), it is advantageous to provide, at the level of a humid air extraction, a recuperator.
Avantageusement située à l'entrée du tunnel, l'extraction d'air humide permet une aspiration dans l'installation au niveau de l'entrée des fruits frais : ainsi cette sortie volontaire d'air humide favorise l'échange thermique entre les fruits froids hors tunnel et l'ambiance tempérée à l'intérieur du séchoir. Advantageously located at the entrance of the tunnel, the extraction of moist air allows suction in the installation at the entrance of fresh fruit: thus this voluntary exit of humid air promotes thermal exchange between cold fruits outside the tunnel and the temperate atmosphere inside the dryer.
L'air admis dans le tunnel en compensation de l'air extrait, est introduit par l'ouverture inférieure du séchoir, d'où sortent les fruits séchés. Ainsi cette entrée d'air frais contribue au refroidissement des fruits chauds sortant de l'installation. L'extracteur d'air humide est équipé d'un registre réglable, permettant de doser la siccité de l'air recyclé dans le tunnel, et de n'extraire que de l'air très chargé en eau. The air admitted to the tunnel in compensation for the extracted air is introduced through the lower opening of the dryer, from which the dried fruit leaves. Thus this fresh air intake contributes to the cooling of the hot fruit leaving the installation. The wet air extractor is equipped with an adjustable damper, allowing to measure the dryness of the air recycled in the tunnel, and to extract only air very charged with water.
Ce registre est automatiquement commandé par un hygrostat recevant les mesures de siccité de plusieurs sondes hygrothermométriques. This register is automatically controlled by a hygrostat receiving the dryness measurements from several hygrothermometric probes.
D'autres caractéristiques et avantages ressortiront de la description suivante d'un mode particulier et non limitatif de réalisation. Other characteristics and advantages will emerge from the following description of a particular and non-limiting embodiment.
Il sera fait référence aux dessins annexés sur lesquels:
- la figure 1 représente la configuration générale du séchoir avec en disposition annexe l'alimentation et la sortie du tunnel. Reference will be made to the appended drawings in which:
- Figure 1 shows the general configuration of the dryer with annex supply and exit from the tunnel.
- la figure 2 représente la coupe transversale de l'installation au niveau des groupes aérothermiques. - Figure 2 shows the cross section of the installation at the aerothermal units.
- la figure 3 représente la coupe longitudinale au niveau d'un des groupes de chauffage. - Figure 3 shows the longitudinal section at one of the heating groups.
- la figure 4 représente la coupe latérale au niveau d'un dispositif de nettoyage permanent à l'eau du tapis supérieur. - Figure 4 shows the side section at a permanent cleaning device with water from the upper mat.
Le tunnel de séchage 12 représenté figure 1 est équipé de trois tapis 1,1'et ln en grillage métallique, montés entre deux chatnes latérales de guidage et d'entratnement. Chacun des trois transporteurs 1,1',1" dispose de son groupe d'entratnement à vitesse variable 2,2',2". The drying tunnel 12 shown in FIG. 1 is equipped with three mats 1,1 ′ and ln made of metal mesh, mounted between two lateral guide and drive rods. Each of the three transporters 1,1 ', 1 "has its variable speed drive unit 2,2', 2".
L'entrée de ltétage supérieur est alimentée sur toute sa largeur, par un tapis 3 d'alimentation constante sur lequel sont vidés les conteneurs (caisses, palox, claies) de fruits frais préalablement laves. The entrance to the upper floor is fed over its entire width, by a constant feed conveyor 3 on which the containers (crates, palox, trays) of freshly washed fresh fruit are emptied.
A la sortie du tapis inférieur 1", les fruits sont déversés sur une bande transporteuse li d'évacuation perpendiculaire au tunnel 12. Cette bande 4 contribue au refroidissement des fruits avant remise en caisses. At the exit of the lower conveyor 1 ", the fruits are poured onto a conveyor belt li of discharge perpendicular to the tunnel 12. This band 4 contributes to the cooling of the fruits before being put back in boxes.
L'air chaud soufflé sous chaque tapis 1,1',1" est acheminé en pression, depuis les groupes supérieurs 9 et 9' (figures 2 et 3) par l'intermédiaire de gaines de liaison 5 équipées de registres de réglage des débits 6. The hot air blown under each 1,1 ', 1 "conveyor belt is supplied under pressure, from the upper groups 9 and 9' (Figures 2 and 3) via connection ducts 5 equipped with flow adjustment registers 6.
De part et d'autre de ces alimentations symétriques, sont prévus des couloirs intérieurs 7 de visite, qui facilitent le nettoyage après campagne de séchage, et la prise d'échantillons en cours de traitement sur la totalité des tapis de séchage. On either side of these symmetrical supplies, there are internal inspection corridors 7, which facilitate cleaning after the drying campaign, and the taking of samples during treatment on all of the drying mats.
La figure 3 concernant la coupe sur le groupe de chauffage montre que l'installation travaille en recyclage sur les brûleurs 8 ; ceux-ci sont disposés dans le circuit en amont des ventilateurs 13, ce qui garantit une parfaite homógénéité de l'air aspiré par les ventilateurs de recyclage 13. FIG. 3 concerning the section on the heating group shows that the installation works in recycling on the burners 8; these are arranged in the circuit upstream of the fans 13, which guarantees perfect homogeneity of the air sucked in by the recycling fans 13.
Le premier groupe aérothermique 9 est prévu exclusivement pour ltétage supérieur 1 du tunnel, qui bien que représentant un tiers de la durée du séchage, correspond approximativement à 50% de l'évaporation totale d'eau pendant toute l'opération. Au niveau du soufflage sous chaque tapis 1,I',I", l'air chaud alimenté par les deux gaines latérales de distribution 5 se répartit sous tout le tapis, avant de traverser la couche de fruits, puis est repris et réaspiré en vrac par les couloirs latéraux 7 vers les groupes de chauffage 9, 9'. The first aerothermal unit 9 is intended exclusively for the upper stage 1 of the tunnel, which although representing a third of the drying time, corresponds approximately to 50% of the total evaporation of water during the entire operation. At the level of the blowing under each carpet 1, I ′, I ", the hot air supplied by the two lateral distribution ducts 5 is distributed under the entire carpet, before passing through the layer of fruit, then is taken up and re-aspirated in bulk by the side corridors 7 to the heating groups 9, 9 '.
L'intérêt économique de l'installation en plus d'un système de soufflage "par percussion" qui admet des fruits non calibrés, réside d'une part, dans l1étanchéTté complète du tunnel par l'absence de nombreuses portes, puisqu'une seule suffit par côté, pour l'accès aux couloirs intérieurs 7 de visite, et réside d'autre part, dans l'implantation de l'extraction d'air humide 10 et de l'entrée d'air neuf en 14, qui par leur efficacité, évitent toutes pertes thermiques généralement existantes aux entrées et sorties de tunnel, par la surpression interne de ce genre d'installation. The economic interest of the installation in addition to a blowing system "by percussion" which admits uncalibrated fruit, resides on the one hand, in the complete sealing of the tunnel by the absence of numerous doors, since only one is sufficient on each side, for access to the interior corridors 7 for inspection, and resides on the other hand, in the installation of the humid air extraction 10 and the fresh air inlet at 14, which by their efficiency, avoid any thermal losses generally existing at tunnel entrances and exits, by the internal overpressure of this type of installation.
Les tapis, en métal tissé inoxydable à mailles relativement fines, sont nettoyés facilement par deux brosses rotatives 11 (cf. fig.4) situées de part et d'autre du brin de retour de chaque tapis : les brosses sont associées à une rampe d'arrosage 15 et une gouttière d'évacuation 168 The carpets, made of stainless woven metal with relatively fine mesh, are easily cleaned by two rotary brushes 11 (see fig. 4) located on either side of the return strand of each carpet: the brushes are associated with a ramp d 15 and an evacuation gutter 168
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8409343A FR2566106A1 (en) | 1984-06-14 | 1984-06-14 | Process and plant for drying by blowing air with percussion for fruits and vegetables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8409343A FR2566106A1 (en) | 1984-06-14 | 1984-06-14 | Process and plant for drying by blowing air with percussion for fruits and vegetables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2566106A1 true FR2566106A1 (en) | 1985-12-20 |
Family
ID=9305028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8409343A Pending FR2566106A1 (en) | 1984-06-14 | 1984-06-14 | Process and plant for drying by blowing air with percussion for fruits and vegetables |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2566106A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605850A1 (en) * | 1986-11-05 | 1988-05-06 | Auximat Levage Sa | OVEN FOR THE TREATMENT OF FRUITS, PARTICULARLY FOR THE PROCESSING OF GREEN PRUNES INTO PRUNES BY DESSICATION |
| ES2128945A1 (en) * | 1996-07-19 | 1999-05-16 | Martinez Cesareo Abellan | Improvements to machines for drying vegetables |
| WO1999060317A1 (en) * | 1998-05-18 | 1999-11-25 | Noraqua Innovation As | Method and plant for drying of cut/pelletized material, in particular animal and/or vegetable feed-stuff, nutrient etc. |
| ES2153285A1 (en) * | 1998-06-11 | 2001-02-16 | Seica E Hijos S L | Vegetable products dryer with two conveyor belts includes two independent chambers with a hot dry air generator and suction fans |
| ITMI20081883A1 (en) * | 2008-10-24 | 2010-04-25 | Sinteco Impianti S R L | EQUIPMENT FOR PASTEURIZATION, COOKING AND DRYING OF PACKAGED AND NOT FOOD PRODUCTS. |
| CN102538424A (en) * | 2012-02-06 | 2012-07-04 | 李见成 | Multi-layer belt drying machine and drying method |
| ITRM20120157A1 (en) * | 2012-04-13 | 2013-10-14 | Tecnofrutta S R L | PLANT AND METHOD FOR DRYING FOOD PRODUCTS |
| IT201800002443A1 (en) * | 2018-02-06 | 2019-08-06 | Tecnofrutta S R L | PLANT AND METHOD FOR DRYING FOOD PRODUCTS |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2368000A1 (en) * | 1976-10-18 | 1978-05-12 | Tomadini Gino | SECHA PROCESS |
| FR2372401A1 (en) * | 1976-11-29 | 1978-06-23 | Raffinerie Tirlemontoise Sa | Multistage hot gas dryer for conveyed bulk prod. - recovers low grade waste heat from industrial process, used e.g. in sugar refineries |
| US4126946A (en) * | 1976-06-30 | 1978-11-28 | Buffington James F | Grain drying apparatus and process |
| US4270280A (en) * | 1979-02-26 | 1981-06-02 | Mcclaren Jay L | Rice drying machine |
| FR2487169A1 (en) * | 1980-07-23 | 1982-01-29 | Etu Realisa Exportation Centre | Hot air dryer for food prods. esp. prunes from plums - has superimposed permeable conveyor bands through which air is recycled |
| GB2089953A (en) * | 1980-10-09 | 1982-06-30 | Fmc Corp | A dryer for drying fruit |
-
1984
- 1984-06-14 FR FR8409343A patent/FR2566106A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126946A (en) * | 1976-06-30 | 1978-11-28 | Buffington James F | Grain drying apparatus and process |
| FR2368000A1 (en) * | 1976-10-18 | 1978-05-12 | Tomadini Gino | SECHA PROCESS |
| FR2372401A1 (en) * | 1976-11-29 | 1978-06-23 | Raffinerie Tirlemontoise Sa | Multistage hot gas dryer for conveyed bulk prod. - recovers low grade waste heat from industrial process, used e.g. in sugar refineries |
| US4270280A (en) * | 1979-02-26 | 1981-06-02 | Mcclaren Jay L | Rice drying machine |
| FR2487169A1 (en) * | 1980-07-23 | 1982-01-29 | Etu Realisa Exportation Centre | Hot air dryer for food prods. esp. prunes from plums - has superimposed permeable conveyor bands through which air is recycled |
| GB2089953A (en) * | 1980-10-09 | 1982-06-30 | Fmc Corp | A dryer for drying fruit |
Non-Patent Citations (1)
| Title |
|---|
| S.V.F., FACHORGAN F]R TEXTILEVEREDLUNG, vol. 16, no. 1, janvier 1961, pages 46-50; W. M]NCH: "Technische Beschreibung eines neuen Bandtrockners" * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2605850A1 (en) * | 1986-11-05 | 1988-05-06 | Auximat Levage Sa | OVEN FOR THE TREATMENT OF FRUITS, PARTICULARLY FOR THE PROCESSING OF GREEN PRUNES INTO PRUNES BY DESSICATION |
| WO1988003366A1 (en) * | 1986-11-05 | 1988-05-19 | S.A. Auximat Levage | Fruit processing oven, particularly for the desiccation of unripe plums to produce prunes |
| EP0271376A1 (en) * | 1986-11-05 | 1988-06-15 | S.A. Auximat Levage | Kiln for the treatment of fruits, especially for processing green plums into pruns by drying |
| ES2128945A1 (en) * | 1996-07-19 | 1999-05-16 | Martinez Cesareo Abellan | Improvements to machines for drying vegetables |
| WO1999060317A1 (en) * | 1998-05-18 | 1999-11-25 | Noraqua Innovation As | Method and plant for drying of cut/pelletized material, in particular animal and/or vegetable feed-stuff, nutrient etc. |
| ES2153285A1 (en) * | 1998-06-11 | 2001-02-16 | Seica E Hijos S L | Vegetable products dryer with two conveyor belts includes two independent chambers with a hot dry air generator and suction fans |
| ITMI20081883A1 (en) * | 2008-10-24 | 2010-04-25 | Sinteco Impianti S R L | EQUIPMENT FOR PASTEURIZATION, COOKING AND DRYING OF PACKAGED AND NOT FOOD PRODUCTS. |
| CN102538424A (en) * | 2012-02-06 | 2012-07-04 | 李见成 | Multi-layer belt drying machine and drying method |
| ITRM20120157A1 (en) * | 2012-04-13 | 2013-10-14 | Tecnofrutta S R L | PLANT AND METHOD FOR DRYING FOOD PRODUCTS |
| IT201800002443A1 (en) * | 2018-02-06 | 2019-08-06 | Tecnofrutta S R L | PLANT AND METHOD FOR DRYING FOOD PRODUCTS |
| WO2019155307A1 (en) * | 2018-02-06 | 2019-08-15 | Tecnofrutta S.R.L | Plant and method for drying foodstuffs |
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