WO2008113338A2 - Installations de séchage sous vide par micro-ondes et procédé de séchage de produits en morceaux, en poudre ou en granulés par micro-ondes - Google Patents

Installations de séchage sous vide par micro-ondes et procédé de séchage de produits en morceaux, en poudre ou en granulés par micro-ondes Download PDF

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Publication number
WO2008113338A2
WO2008113338A2 PCT/DE2008/000471 DE2008000471W WO2008113338A2 WO 2008113338 A2 WO2008113338 A2 WO 2008113338A2 DE 2008000471 W DE2008000471 W DE 2008000471W WO 2008113338 A2 WO2008113338 A2 WO 2008113338A2
Authority
WO
WIPO (PCT)
Prior art keywords
drum
microwave
vacuum drying
drying plant
microwave vacuum
Prior art date
Application number
PCT/DE2008/000471
Other languages
German (de)
English (en)
Other versions
WO2008113338A3 (fr
Inventor
Peter Püschner
Original Assignee
Püschner GmbH + Co. KG
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 Püschner GmbH + Co. KG filed Critical Püschner GmbH + Co. KG
Priority to EP08734409A priority Critical patent/EP2122284A2/fr
Publication of WO2008113338A2 publication Critical patent/WO2008113338A2/fr
Publication of WO2008113338A3 publication Critical patent/WO2008113338A3/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • 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
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/049—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with provisions for working under increased or reduced pressure, with or without heating
    • 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
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0495—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with provisions for drying by electro-magnetic means, e.g. radiation, microwaves
    • 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
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
    • 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
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/041—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying flowable materials, e.g. suspensions, bulk goods, in a continuous operation, e.g. with locks or other air tight arrangements for charging/discharging
    • 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
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/048—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum in combination with heat developed by electro-magnetic means, e.g. microwave energy
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H05B2206/046—Microwave drying of wood, ink, food, ceramic, sintering of ceramic, clothes, hair

Definitions

  • Microwave vacuum drying equipment and method for drying particulate, powdered or granular material by means of microwaves
  • the present invention relates to microwave vacuum drying equipment for drying lumpy, powdery or granular material and a method for drying lumpy, powdery or granular material by means of microwaves in a vacuum container.
  • a microwave dehumidifier is known from DE 39 07 248 C2.
  • DE 40 36 112 C2 a microwave belt dryer is known. Both types of dryers have the disadvantage that thus dried to be dried material is relatively uneven.
  • the invention is therefore based on the object to allow a more uniform drying of particulate, powdery or granular Good.
  • a microwave vacuum drying apparatus for drying particulate, powdery or granular material, comprising a tubular vacuum container having a Guteinlouö réelle at one end and a lower Gutauslouö réelle at its other end, a non-metallic drum for receiving and conveying the material to be dried, which is open at their end faces, coaxially arranged in the vacuum container and can be driven by means of a drive to a rotary movement and a Inner surface, which is designed so that it promotes the Guteinlenseffhung introduced by the Guteinlenseffhung to be dried Good toward the end of the vacuum container with Gutauslouöffhung upon rotation of the drum, at least one microwave generator and at least one microwave coupling element, the microwave from the Generator is fed and opens into the interior of the vacuum vessel.
  • the Guteinlenseöffhung can be arranged, for example, in the upper region of the one end of the vacuum vessel.
  • a vacuum in the vacuum vessel is produced in
  • the longitudinal axis of the vacuum container may be horizontal, but also at an angle to the horizontal.
  • a microwave vacuum drying plant for drying lumpy, powdery or granular material, comprising a tubular vacuum container with a closable by a door Trommeleinlrawöffhung at one end and a closable by a door Trommelauslrawö réelle at its other End, in which in the longitudinal direction in succession n> 2 drying stations are provided for the discrete drying of goods to be dried, wherein at least one drying station is provided with at least one microwave generator and an associated microwave input element, which is fed by the microwave generator and in the region of the respective drying station opens into the interior of the vacuum container, a non-metallic, coaxially arranged in the vacuum container to a substantially horizontal axis of rotation rotatably mounted drum for receiving to drying material in each drying station, a drive for the n> 2 drums or a drive for each of the> two drums for rotationally driving the drums, and a conveyor for conveying the drums step by step from one drying station to
  • this object is achieved by a method for drying particulate, powdery or granular material by means of microwaves in a vacuum container, in particular a microwave vacuum drying system, comprising the steps: loading n> 2 drums with material to be dried outside a vacuum container and passing the loaded n> 2 drums through the vacuum vessel in n> 2 drying stations, wherein after each drying station a discrete partial drying is carried out by means of microwaves and with simultaneous turning or turning of the drums.
  • the drum is tubular.
  • the drum has a similar diameter to that of the vacuum vessel in order to optimize the microwave energy consumption.
  • the drum is made of plastic, since plastic is transparent to microwaves.
  • the drum consists of at least two tubular drum segments. These can be connected to one another detachably or non-detachably, which can be advantageous both for the manufacture and the transport as well as for the installation of the drum in a vacuum container.
  • the inner surface of the drum or drum inserts is formed by a drum insert.
  • the inner surface of the drum or drum segments is formed in the manner of an internal thread.
  • this could be at least substantially perpendicularly to the inner surface of the drum extending, extending substantially helically extending wall.
  • the lateral surface of the drum is perforated. This facilitates, for example, the measurement of process parameters, such as temperature and / or humidity of Guts in the drum, and the introduction of heat or, for example, water and / or steam and / or flavors in the drum.
  • At least one mixing element is arranged on the inner surface of the drum or drum segments.
  • the material to be dried is mixed even more and in particular conveyed Good from below to the surface of the material, so that it is more exposed to the microwave radiation.
  • the problem of the finite penetration depth of microwave radiation can be reduced or even solved.
  • the drum is mounted on its outer periphery and driven by the drive.
  • the drive is a further particular embodiment of the invention.
  • the microwave coupling element is arranged in the lower half of the vacuum container. This ensures that microwave energy is introduced at least substantially directly into the material to be dried. This is especially true if, as mentioned above, according to a particular embodiment, at least one mixer element is provided. In that case, an asymmetrical, that is to say one-sided, arrangement of the material to be dried forms in the lower region of the drum. On the side on which the material to be dried is mainly or substantially, then preferably at least one microwave coupling element should be arranged.
  • at least one H that is to say one-sided, arrangement of the material to be dried forms in the lower region of the drum.
  • at least one microwave coupling element should be arranged.
  • at least one H that is to say one-sided, arrangement of the material to be dried forms in the lower region of the drum.
  • at least one microwave coupling element should be arranged.
  • at least one H that is to say one-sided, arrangement of the material to be dried forms in the lower region of the drum.
  • at least one microwave coupling element
  • At least one infrared temperature measuring device is provided for measuring the temperature of the material in the drum. This is preferably located outside the drum, for example in the wall of the vacuum container.
  • At least one moisture measuring device can be provided for measuring the moisture of the material in the drum.
  • a process control is provided for the automatic control of the drying as a function of the temperature values supplied by the at least one temperature measuring device and / or the humidity values supplied by the at least one moisture measuring device.
  • the process control for the automatic control of the microwave power (s) of the or the microwave generator / generators is designed.
  • the process controller can provide different radiated microwave power along the longitudinal axis of the vacuum vessel or drum.
  • the process controller is designed to control the microwave power as a function of the humidity values provided by the at least one moisture meter.
  • the process control is designed to automatically control the rotational speed of the drum.
  • the rotational speed of the drum determines the residence time of the material to be dried in the vacuum container.
  • the Turning speed will normally be set by the process control to be constant for a particular kind of good.
  • the residence time is also z. B. influenced by the position of the spiral wall on the inner surface and by the number of spiral walls.
  • the process control is designed to control the rotational speed of the drum in dependence on the humidity values supplied by the at least one moisture measuring device.
  • At least one infrared radiant heater is provided for heating the material in the drum.
  • the infrared radiant heater can be used to additionally heat the surface of the product.
  • At least one heating device is provided for heating the wall of the vacuum container. This serves to avoid condensation on the vacuum vessel wall.
  • At least one device for introducing water and / or steam and / or aromas into the drum is provided.
  • CIP clean-in-place
  • This may include, for example, spray heads for spraying cleaning fluid into the drum.
  • the process control for automatic and / or continuous metering of the drum is designed with good.
  • the drive or the respective drive is designed for reciprocating rotary movement of the drums or the drum.
  • each drum has an unlocked opening in its lateral surface and is closed at its end faces.
  • the unlocked opening then serves to load the drum with material to be dried.
  • the drive or the respective drive is designed for circulating rotary operation of the drum or drums.
  • At least one drum in its lateral surface has a closable by means of a lid opening and is closed at their end faces. Said opening serves to load the drum with material to be dried.
  • At least one drum is closed on its lateral surface and has a closable opening in one of its end faces. Said opening serves to load the drum with material to be dried.
  • At least one of the drums is perforated.
  • the drums are made of plastic.
  • At least one of the drums has at least one mixing element on its inner circumferential surface.
  • at least one of the drums is mounted on its circumference.
  • At least one infrared temperature measuring device for measuring the temperature of the product in the respective drum is provided in at least one of the drying stations.
  • a moisture measuring device for measuring the moisture of the material in the respective drum is preferably provided in at least one of the drying stations.
  • a process control is provided for the automatic control of the drying as a function of the temperature values supplied by the at least one infrared temperature measuring device and / or the humidity values supplied by the at least one moisture measuring device.
  • the process controller is configured to control the reciprocating rotational movement of the drums in response to the humidity values provided by the at least one moisture measuring device.
  • the process control is designed to control the microwave power as a function of the humidity values supplied by the at least one moisture measuring device.
  • an infrared radiant heater is provided in at least one of the drying stations for heating the product in the respective drum.
  • a heating device for heating the wall of the vacuum container is advantageously provided in at least one of the drying stations.
  • a device for introducing water and / or steam and / or aromas into the respective drum is provided in at least one of the drying stations.
  • a CIP cleaning unit is provided in at least one of the drying stations.
  • the at least one microwave injection element is arranged in the lower half of the vacuum container.
  • At least one hot air supply device for supplying hot air into the vacuum container and at least one exhaust air discharge device; equipped with exhaust air.
  • the drums are continued to a drying station and a drum is loaded with still to be dried Good in the vacuum tank.
  • the drums are continued in the vacuum container by reloading the drum to a drying station.
  • the invention is based on the surprising finding that by using a drum with a specially designed inner surface or by passing drums loaded with material to be dried and performing discrete partial drying in drying stations while rotating or reciprocating the drums the material to be dried is not only transported in a quasi-stationary state by a microwave field, but is mixed or mixed at the same time, so that in principle each portion of the material to be dried is exposed to the microwave radiation substantially over a uniform period of time and with a similar intensity. As a result, a more uniform drying and thorough mixing of the material is achieved.
  • the special arrangement of the drum in the vacuum container and its design enables a continuous drying operation by continuously loading the vacuum container or the drum with material to be dried.
  • Figure 1 is a side view of a microwave vacuum drying plant partially in
  • Figure 2 is a sectional view taken along the line H-II of Figure 1;
  • Figure 3 is a partial sectional view of another particular embodiment of
  • Embodiment of the invention partially in longitudinal section view in the working state
  • FIG. 5 is a sectional view of the microwave vacuum drying apparatus of Figure 3, taken along the line IV-IV in Figure 3;
  • Figure 6 shows the microwave vacuum drying system of Figure 3 in loading
  • Figure 7 is a partial sectional view of another particular embodiment of
  • the microwave vacuum drying apparatus 100 shown in FIG. 1 has a tubular vacuum container 110 whose longitudinal axis L extends horizontally. At each of both ends of the vacuum vessel 110, there is provided a vacuum door Ia and Ib, respectively. An obliquely downwardly extending Guteinlivesstutzen 10 extends through a Guteinlouö réelle 120 in the vacuum door Ib. Through the Guteinlivesstutzen 10 an entry dosage is possible.
  • the vacuum container 110 has two vapor outlets 9a and 9b.
  • a tubular drum 2 is disposed coaxially with the longitudinal axis L of the vacuum vessel 110.
  • the drum 2 is made of plastic and is driven by a motor 12 and a central, that is coaxial with the longitudinal axis L extending drive shaft 3 for rotation.
  • the drum 2 is in cross section (see Figure 2) rollers 3a and 3b in the lower region between the drum 2 and the vacuum container 110 stored.
  • the drum 2 is open at both ends.
  • microwave coupling elements 4b open on that side with respect to the longitudinal axis L in the vacuum container, on which to be dried Good 170 mainly resides (see Figure 2).
  • the inner surface of the drum 2 has a surface with a wall 180 extending in a spiraling manner and rising substantially perpendicularly from the inner surface.
  • this spiral wall 180 is to be dried Good, which is given by the Guteinlillerstutzen 10 in the drum 2, to the other end (in Figure 1 left) of the drum 2 and transported there from the drum 2 in the Gutauslivesstutzen 11 through the Gutauslrawöffhung 130 ,
  • the spiral-shaped wall 180 also holds the material 170 to be dried in FIG. 2 essentially on the left-hand side, so that it makes sense to allow the microwave coupling elements 4b to open into the vacuum container 110 there.
  • the drum 2 is perforated.
  • spray heads 5a and 5b are disposed in the wall of the vacuum vessel 110 for spraying flavors, steam and / or water and / or other media. The spray heads 5 a and 5 b can also be used to clean the drum 2.
  • an infrared radiant heater 7 is provided in the upper region of the vacuum container 110 in order to heat the product 170.
  • the perforation of the drum 2 is of course chosen so that the material to be dried can not fall through.
  • the spray heads 5 a and 5 b are advantageously arranged over the cross section, so that much to be dried Good is achieved.
  • the temperature of the material 110 can be measured by means of the hifrarot-Temperaturmeß worn 8b characterized in that the wall temperature of the drum 2 is substantially equal to the temperature of the material to be dried 170.
  • the vacuum in the vacuum vessel 110 is generated and maintained, for example, by a double lock technique (atmospheric in the intermediate lock, intermediate lock, intermediate lock then opens into vacuum) or by rotary lock technology.
  • the drum 2 consists of several drum segments, of which only three, namely 2a, 2b and 2c, can be seen in Fig. 3, each having revolving rollers 210, 211, 212 and 213 and the axes 220, 221, 222 and 223 of the rollers are interconnected.
  • the inner surfaces of the drum segments 2 a, 2 b and 2 c are designed and connect to each other so that a spirally extending, substantially vertically rising from the inner surface wall for conveying the material to be dried in Figure 1 from right to left results.
  • a drum element 230 For Gutauslenseffhung 130 (see Figure 1) through a drum element 230 is also connected via the axes 250 and 251 of rollers 240 and 241 to the drum segment 2a.
  • the drum member 230 has spaced longitudinal ridges 260, 261, 262, and 263 to provide open areas through which the dried product may fall into the gutter outlet 130.
  • the entire drum is driven by a geared motor 265.
  • FIG. 4 shows a microwave vacuum drying plant 100 according to a further particular embodiment of the invention.
  • This comprises a tubular vacuum container 110, whose longitudinal axis L extends horizontally.
  • Each end of the vacuum vessel 110 is closed by means of a vacuum door Ia, Ib.
  • the vacuum doors 1a and 1b can be pivoted upwards.
  • the vacuum tank 110 has two vapor outlets 9a and 9b in its upper area.
  • microwave generators 4a and associated microwave injection elements 4b are provided at equal intervals in the direction of its longitudinal axis for coupling into the vacuum container 110.
  • drums 190 to 194 loaded with drums 170 to 190 to be dried 170 are successively arranged in the vacuum container 110 one behind the other. Each of these drums looks as shown in Figure 5 in cross-section.
  • the drums 190 to 194 are rotatable about a common drive axis 3 (see FIG. 5) by means of a motor (not shown) about an axis of rotation identical to the longitudinal axis L. For this purpose they are rotatably mounted on rollers 3a and 3b on the outer periphery in the vacuum container 110 (see Figure 5).
  • the microwave generators 4a and microwave injection elements 4b are arranged symmetrically on both sides.
  • infrared temperature measuring devices 8a and 8b and spray heads 5a and 5b and an infrared radiant heater 7 are provided.
  • the drum 2 has in its upper region in the lateral surface of an opening 6 for loading the same with 170 to be dried Good.
  • the opening 6 allows the direct irradiation of the material to be dried 170 with infrared radiation by means of the infrared heater 7.
  • the front sides of the drum 2 are closed.
  • three mixer elements 200, 201 and 202 are arranged at a distance to each other in the lower region, which extend like ribs in the interior, to provide for better mixing or mixing of the material to be dried 170.
  • the microwave vacuum drying system 100 In the present embodiment are in the working state of the microwave vacuum drying system 100 always five drums that are loaded with goods to be dried, in the vacuum tank 110. Said drums in discrete steps (stations) successively in principle five drying stations (not marked), in where they are not conveyed further in the longitudinal direction L for a certain time, but are driven in the present case to a reciprocating motion, which may also be referred to as a weighing mode. Meanwhile, the material to be dried is charged with microwaves. After performing a partial drying step, as shown in FIG.
  • the vacuum vessel 110 is opened at both ends by pivoting the vacuum doors 1a and 1b upward, and all five drums 190 to 194 are continued from right to left by one stage or drying station in FIG wherein the foremost drum 190 is led out of the vacuum container 110.
  • a new drum 195 is fed into the vacuum vessel 110 and subsequently the next partial drying step is performed after closing the vacuum doors 1a and 1b and rebuilding the vacuum.
  • the weighing mode is mainly used for good, which is pulverfull and dusty. Gentle weighing avoids dust that can lead to plasma formation in a vacuum with microwaves. In the case of lumpy material, on the other hand, continuous mixing is better, for example by means of the embodiment shown in FIGS.
  • drums must have closed lateral surfaces or lateral surfaces with a closable opening.
  • a closed lateral surface must be provided in at least one of the front sides, in particular a closable opening.
  • FIG. 7 shows a further particular embodiment.
  • the drive shaft may have a toothing 310 or a rubber coating 320 for engagement with a corresponding toothed outside of a drum 194 or the outer surface of the drum, respectively.
  • a passive shaft 330 is provided symmetrically to the vertical through the pivot point of a drum 194.
  • a new drum 195 is fed to the vacuum container 110 via guide tubes 340 with the vacuum door 1b pivoted upwards.

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

Abstract

Installation de séchage sous vide par micro-ondes pour le séchage de produits en morceaux, en poudre ou en granulés, comprenant un contenant sous vide tubulaire doté, à une extrémité, d'un orifice d'entrée de produit et, à l'autre extrémité, d'un orifice de sortie de produit; un tambour non métallique pour recevoir et transporter le produit à sécher, lequel tambour étant ouvert au niveau de ses faces frontales, étant monté coaxial dans le contenant sous vide et étant entraîné en rotation par un mécanisme d'entraînement. De plus, le tambour présente une surface interne conçue de telle façon que, lors de la rotation du tambour, le produit à sécher introduit par l'orifice d'entrée de produit est transporté en direction de l'extrémité du contenant sous vide pourvue de l'orifice de sortie de produit. L'installation comprend également au moins un générateur de micro-ondes et au moins un élément d'injection de micro-ondes qui est alimenté par un générateur de micro-ondes et aboutit é l'intérieur du contenant sous vide. L'invention concerne également une installation de séchage sous vide par micro-ondes comprenant au moins deux stations de séchage à travers lesquelles sont guidés les tambours et un procédé de séchage de produits en morceaux, en poudre ou en granulés par micro-ondes dans un contenant sous vide.
PCT/DE2008/000471 2007-03-16 2008-03-17 Installations de séchage sous vide par micro-ondes et procédé de séchage de produits en morceaux, en poudre ou en granulés par micro-ondes WO2008113338A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08734409A EP2122284A2 (fr) 2007-03-16 2008-03-17 Installations de séchage sous vide par micro-ondes et procédé de séchage de produits en morceaux, en poudre ou en granulés par micro-ondes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710012795 DE102007012795B3 (de) 2007-03-16 2007-03-16 Mikrowellen-Vakuumtrocknungsanlagen und Verfahren zur Trocknung von stückigem, pulverförmigem oder granulatförmigem Gut mittels Mikrowellen
DE102007012795.4 2007-03-16

Publications (2)

Publication Number Publication Date
WO2008113338A2 true WO2008113338A2 (fr) 2008-09-25
WO2008113338A3 WO2008113338A3 (fr) 2009-04-30

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Country Link
EP (1) EP2122284A2 (fr)
DE (1) DE102007012795B3 (fr)
WO (1) WO2008113338A2 (fr)

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EP2578975A1 (fr) 2011-10-05 2013-04-10 Sanofi Pasteur Sa Lyophilisateur à tambour rotatif
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BR102013031782A2 (pt) * 2013-12-10 2015-07-14 Merlino Junior Prestes Processo e equipamento para secagem de resíduos urbanos, industriais e de saúde e transformação em combustível para caldeiras e fornalhas industriais
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