EP0784854A1 - Drying station for liquid or damp waste - Google Patents

Drying station for liquid or damp waste

Info

Publication number
EP0784854A1
EP0784854A1 EP95931898A EP95931898A EP0784854A1 EP 0784854 A1 EP0784854 A1 EP 0784854A1 EP 95931898 A EP95931898 A EP 95931898A EP 95931898 A EP95931898 A EP 95931898A EP 0784854 A1 EP0784854 A1 EP 0784854A1
Authority
EP
European Patent Office
Prior art keywords
container
drying
drying station
heating mat
station
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.)
Granted
Application number
EP95931898A
Other languages
German (de)
French (fr)
Other versions
EP0784854B1 (en
Inventor
Johann Lisson
Karl-Heinz Kleinschroth
Klaus Blinn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0784854A1 publication Critical patent/EP0784854A1/en
Application granted granted Critical
Publication of EP0784854B1 publication Critical patent/EP0784854B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/08—Processing by evaporation; by distillation

Definitions

  • the invention relates to a drying station for
  • Drying of material contained in a container in particular contaminated waste from a nuclear power plant.
  • the drying of waste in a container of a nuclear power plant which can be radioactively contaminated, is usually carried out in a drying station.
  • the heat of vaporization required for drying the waste is supplied to the container and thus the material contained therein by means of a heated gaseous medium, for example air. Due to the poor thermal conductivity, for example of air, such a drying process is associated with high energy consumption. In addition, a long drying time is necessary, so that the material throughput rate during drying is relatively low.
  • the drying station expediently comprises a holding device which, when the container is introduced into the drying position, automatically makes extensive mechanical contact between the heating mat and the container.
  • the drying station has an insulating shell surrounding the container together with the heating mat in the drying position with a wall area and with a lid area provided with a ventilation opening.
  • the heat input into the container is increased while the heating output of the heating mat remains the same.
  • the ventilation opening in the lid area of the insulating shell and 3 By means of an air circulation device connected to the ventilation opening, in particular with a blower, a directed air flow can be built up inside the insulating shell, which allows the moisture removed from the contaminated waste by the drying to be removed in a targeted manner.
  • a collecting tray for collecting the moisture is arranged in front of the ventilation opening.
  • a condensate measuring device is expediently arranged on a condenser connected to the vent opening.
  • the condenser serves to condense the moisture removed from the waste during the drying process, the amount of which can be measured by the condensate measuring device.
  • the drying station 1 In the drying station 1 according to the figure, several electrically heated heating mats 3 are provided one above the other for supplying heat of vaporization in this container 2 for drying material located in a drum or container 2, in particular contaminated waste from a nuclear power plant. They are placed flat or pressed onto the side wall of the container 2. It can also be an annular heating mat 3 adapted to the contour of the container 2.
  • the container 2 is placed on a transport device 4, e.g. a rack or container on wheels.
  • the transport device 4 has a floor heater 5 and a pallet-like floor with insulation.
  • the transport device 4 is e.g. a rail-bound car.
  • the drying station 1 comprises an insulating shell 6 surrounding a drying room with a ventilation opening 7 in its cover area.
  • the insulating shell 6 is equipped to receive the container 2 with two pivotable 1/4 circular segment doors, to which the three heating mats 3 are fastened by means of a holding device (not shown) such that when the container 2 is introduced into the dry position within the insulating shell 6, the segment doors automatically close and the heating mats 3 are automatically brought into extensive mechanical contact with the container 2.
  • the heating mats 3 are stretched, for example, by means of spring elements (not shown) on both segment doors in such a way that they run through the opening formed by the doors when the doors are open.
  • spring elements not shown
  • the resultant supply of heat of vaporization via the wall of the container 2 into the material contained therein reduces the moisture content of the material.
  • the moisture emerging in vapor form is fed via line 11 to a condenser 20 connected into line 11. There it condenses after a heat exchange with supplied coolant K.
  • the amount of the condensed moisture is quantitatively recorded in a condensate measuring container 21 arranged on the condenser 20.
  • the end point of the drying process can be determined by means of the detected amount of condensed moisture.
  • the drain line 23 which can be shut off by the valve 22, the condensed moisture can be supplied, for example, to a sewer. Due to the large-area mechanical contact of the heating mats 3 with the container 2, drying of the material is possible with low expenditure of energy and a short drying time.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

In order to ensure the complete and reliable drying of material in a container (2), especially contaminated waste from a nuclear power station, using a low-power-consumption drying station (1) with a short drying time, the invention provides for at least one heating mat (3) to supply the container (2) with heat for evaporation. When the container (2) is set to the drying position, a retainer automatically ensures contact over a large area between the heating mat (3) and the container (2).

Description

Beschreibung description
TrocknungsStation für flüssigen oder feuchten AbfallDrying station for liquid or wet waste
Die Erfindung bezieht sich auf eine Trocknungsstation zurThe invention relates to a drying station for
Trocknung von in einein Behälter befindlichem Material, insbe¬ sondere von kontaminiertem Abfall einer Kernkraftwerksanlage.Drying of material contained in a container, in particular contaminated waste from a nuclear power plant.
Aus verschiedenen Gründen, beispielsweise aufgrund von Be- handlungsvorgangen oder nach einer Lagerung, kann der in ei¬ nem Kernkraftwerk anfallende radioaktiv kontaminierte Abfall Feuchtigkeit enthalten. Ein Feuchtigkeitsgehalt des Abfalls von z.B. mehr als 30% kann zu Faul- und Gärprozessen sowie zur Bildung eines Gases, beispielsweise Methan oder Wasser- Stoff (H2), führen. Das infolgedessen freigesetzte Gas (z.B. Methan) kann bei einer Lagerung des Abfalls ein Aufblähen und eine damit verbundene Beschädigung des Lagerbehältnisses - z.B. eines 200-1-Fasses - bewirken. Um die durch den Feuch¬ tigkeitsgehalt des Abfalls hervorgerufenen chemisch-physika- lischen Reaktionen zu unterbinden, ist eine frühzeitige und weitreichende Trocknung des Abfalls erforderlich.For various reasons, for example due to treatment processes or after storage, the radioactively contaminated waste generated in a nuclear power plant can contain moisture. A moisture content of the waste e.g. more than 30% can lead to fermentation and fermentation processes as well as to the formation of a gas, for example methane or hydrogen (H2). The gas released as a result (e.g. methane) can, when the waste is stored, swell and cause damage to the storage container - e.g. a 200-1 barrel - effect. In order to prevent the chemical-physical reactions caused by the moisture content of the waste, an early and extensive drying of the waste is necessary.
Die Trocknung von in einem Behälter befindlichem Abfall einer Kernkraftwerksanlage, der radioaktiv kontaminiert sein kann, wird üblicherweise in einer Trocknungsstation durchgeführt. In dieser Station wird die für die Trocknung des Abfalls er¬ forderliche Verdampfungswärme mittels eines aufgeheizten gas¬ förmigen Mediums, beispielsweise Luft, dem Behälter und somit dem in ihm befindlichen Material zugeführt. Aufgrund der schlechten Wärmeleitfähigkeit, beispielsweise von Luft, ist ein derartiger Trocknungsvorgang jedoch mit hohem Energiever¬ brauch verbunden. Darüber hinaus ist eine lange Trocknungs¬ zeit nötig, so daß die Materialdurchsatzrate bei der Trocknung relativ gering ist.The drying of waste in a container of a nuclear power plant, which can be radioactively contaminated, is usually carried out in a drying station. In this station, the heat of vaporization required for drying the waste is supplied to the container and thus the material contained therein by means of a heated gaseous medium, for example air. Due to the poor thermal conductivity, for example of air, such a drying process is associated with high energy consumption. In addition, a long drying time is necessary, so that the material throughput rate during drying is relatively low.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Trocknungsstation zur Trocknung von in einem Behälter befind- lichem Material, insbesondere von kontaminiertem Abfall einer Kernkraftwerksanlage, derart auszubilden, daß eine zuverläs¬ sige Trocknung des Materials bei kurzer Trocknungszeit mit geringem Energie- und Kostenaufwand möglich ist.The invention is therefore based on the object of providing a drying station for drying Lich material, in particular contaminated waste from a nuclear power plant, such that a reliable drying of the material with a short drying time is possible with low energy and cost.
Diese Aufgabe wird für eine Trocknungsstation der obengenann¬ ten Art dadurch gelöst, daß eine Heizmatte zur Zuführung von Verdampfungswärme in den Behälter vorgesehen ist.This object is achieved for a drying station of the type mentioned above in that a heating mat is provided for supplying heat of vaporization into the container.
Die Erfindung geht von der Überlegung aus, daß durch die Ver¬ wendung einer kostengünstig verfügbaren Heizmatte, die in di¬ rekten Kontakt mit dem das zu trocknende Material enthalten¬ den Behälter gebracht werden kann, die zur Trocknung notwen¬ dige Verdampfungswärme direkt in den Behälter geführt werden kann. Da somit der hohe Wärmewiderstand eines schlechten Wär¬ meleiters, wie beispielsweise Luft, nicht überwunden werden muß, ist eine Trocknung bei geringem Energieaufwand gewähr¬ leistet, und die erforderliche Trocknungszeit ist verkürzt. Mindestens eine elektrisch regulierbare Heizmatte erlaubt da- bei ein individuelles Trocknungsprogramm für jeden einzelnen Behälter, der zu trocknendes Material enthält.The invention is based on the consideration that by using an inexpensive heating mat which can be brought into direct contact with the container containing the material to be dried, the heat of evaporation necessary for drying is passed directly into the container can be performed. Since the high thermal resistance of a poor heat conductor, such as air, does not have to be overcome, drying with low energy expenditure is guaranteed and the required drying time is shortened. At least one electrically adjustable heating mat allows an individual drying program for each individual container that contains material to be dried.
Um beim Umgang mit radioaktiv kontaminiertem Abfall einer Kernkraftwerksanlage zu vermeiden, daß Bedienungspersonal mit dem den Abfall enthaltenden Behälter in Kontakt treten muß, umfaßt die Trocknungsstation zweckmäßigerweise eine Haltevor¬ richtung, die beim Einbringen des Behälters in die Trocken¬ position selbsttätig einen großflächigen mechanischen Kontakt zwischen der Heizmatte und dem Behälter herstellt.In order to avoid that operating personnel must come into contact with the container containing the waste when handling radioactively contaminated waste from a nuclear power plant, the drying station expediently comprises a holding device which, when the container is introduced into the drying position, automatically makes extensive mechanical contact between the heating mat and the container.
In vorteilhafter Ausgestaltung weist die Trocknungsstation eine den Behälter mitsamt der Heizmatte in der Trocknungspo¬ sition umgebende Isolierschale mit einem Wandbereich und mit einem mit einer Entlüftungsόffnung versehenen Deckelbereich auf. Dadurch wird bei gleichbleibender Heizleistung der Heiz¬ matte der Wärmeeintrag in den Behälter vergrößert. Mittels der Entlüftungsöffnung im Deckelbereich der Isolierschale und 3 mittels einer mit der Entlüftungsöffnung verbundenen Luftum- wälzvorrichtung, insbesondere mit einem Gebläse, kann inner¬ halb der Isolierschale ein gerichteter Luftstrom aufgebaut werden, der ein gezieltes Abführen der durch die Trocknung dem kontaminierten Abfall entnommenen Feuchtigkeit ermög¬ licht. In weiterer vorteilhafter Ausgestaltung ist vor der Entlüftungsöffnung eines Sammelschale zur Sammlung der Feuch¬ tigkeit angeordnet.In an advantageous embodiment, the drying station has an insulating shell surrounding the container together with the heating mat in the drying position with a wall area and with a lid area provided with a ventilation opening. As a result, the heat input into the container is increased while the heating output of the heating mat remains the same. By means of the ventilation opening in the lid area of the insulating shell and 3 By means of an air circulation device connected to the ventilation opening, in particular with a blower, a directed air flow can be built up inside the insulating shell, which allows the moisture removed from the contaminated waste by the drying to be removed in a targeted manner. In a further advantageous embodiment, a collecting tray for collecting the moisture is arranged in front of the ventilation opening.
Zur Endpunktkontrolle des Trocknungsvorgangs, d.h. zur Fest¬ stellung des Zeitpunkts, von dem an der Restfeuchtigkeitsge- halt des zu trocknenden Materials unterhalb eines zulässigen Grenzwerts liegt, ist zweckmäßigerweise an einem mit der Ent¬ lüftungsöffnung verbundenen Kondensator ein Kondensatmeßgerät angeordnet. Der Kondensator dient zum Kondensieren der dem Abfall während des Trocknungsvorgangs entnommenen Feuchtig¬ keit, deren Menge durch das Kondensatmeßgerät gemessen werden kann.To check the end point of the drying process, i.e. To determine the point in time at which the residual moisture content of the material to be dried is below an allowable limit value, a condensate measuring device is expediently arranged on a condenser connected to the vent opening. The condenser serves to condense the moisture removed from the waste during the drying process, the amount of which can be measured by the condensate measuring device.
Zum Transport des Behälters, beispielsweise zum Einbringen in die Trocknungsposition, umfaßt die Trocknungsstation in zweckmäßiger Ausgestaltung eine Transportvorrichtung. In be¬ sonders vorteilhafter Weiterbildung weist die Transportvor¬ richtung einen Bodenheizer sowie einen palettenartig ausge- bildeten Boden mit einer Isolierung auf. Durch den Bodenhei¬ zer kann in Verbindung mit der Heizmatte der Wärmeeintrag in den Behälter besonders effektiv gestaltet werden. Mittels des palettenartig ausgebildeten Bodens der TransportVorrichtung kann die den Behälter tragende Transportvorrichtung bei- spielsweise auch durch einen Gabelstapler bewegt werden.In an expedient embodiment, the drying station comprises a transport device for transporting the container, for example for introducing it into the drying position. In a particularly advantageous development, the transport device has a floor heater and a pallet-like floor with insulation. By means of the floor heater, the heat input into the container can be designed particularly effectively in connection with the heating mat. By means of the pallet-like bottom of the transport device, the transport device carrying the container can also be moved, for example, by a forklift.
Die mit der Erfindung erzielten Vorteile bestehen insbeson¬ dere darin, daß durch die Verwendung der Heizmatte eine Zu¬ führung von Verdampfungswärme in das zu trocknende Material bei geringem Energieverbrauch und unter kurzer Trocknungszeit erfolgen kann. Ein Ausführungsbeispiel der Erfindung wird anhand einer Zeichnung näher erläutert.The advantages achieved by the invention are, in particular, that the use of the heating mat allows heat of vaporization to be fed into the material to be dried with low energy consumption and with a short drying time. An embodiment of the invention is explained in more detail with reference to a drawing.
Die Figur zeigt schematisch eine Trocknungsstation, insbeson- dere eine Faßtrockeneinheit, zur Vorbehandlung von Mischab¬ fällen durch Trocknung.The figure shows schematically a drying station, in particular a drum drying unit, for pretreating mixed wastes by drying.
In der Trocknungsstation 1 gemäß der Figur sind zur Trocknung von in einem Faß oder Behälter 2 befindlichem Material, ins- besondere von kontaminiertem Abfall einer Kernkraftwerksanla¬ ge, mehrere elektrisch beheizte Heizmatten 3 übereinander zur Zuführung von Verdampfungswärme in diesen Behälter 2 vorgese¬ hen. Sie sind auf die Seitenwand des Behälters 2 flächig auf¬ gelegt oder aufgepreßt. Es kann sich auch jeweils um eine ringförmige, der Kontur des Behälters 2 angepaßte Heizmatte 3 handeln. Zu Beginn des Trocknungsvorgangs wird der Behälter 2 auf eine Transportvorrichtung 4 gesetzt, z.B. ein Gestell oder Behältnis auf Rollen. Die Transportvorrichtung 4 weist einen Bodenheizer 5 sowie einen palettenartig ausgebildeten Boden mit einer Isolierung auf. Im Ausführungsbeispiel ist die Transportvorrichtung 4 z.B. ein schienengebundener Wagen. Die Trocknungsstation 1 umfaßt eine einen Trockenraum umge¬ bende Isolierschale 6 mit einer Entlüftungsöffnung 7 in ihrem Deckelbereich. Die Isolierschale 6 ist zur Aufnahme des Be- hälters 2 mit zwei schwenkbaren 1/4-Kreissegmenttüren ausge¬ stattet, an denen mittels einer nicht dargestellten Haltevor¬ richtung die drei Heizmatten 3 derart befestigt sind, daß bei dem Einbringen des Behälters 2 in die Trockenposition inner¬ halb der Isolierschale 6 die Segmenttüren automatisch schließen und die Heizmatten 3 selbsttätig in großflächigen mechanischen Kontakt mit dem Behälter 2 gebracht werden.In the drying station 1 according to the figure, several electrically heated heating mats 3 are provided one above the other for supplying heat of vaporization in this container 2 for drying material located in a drum or container 2, in particular contaminated waste from a nuclear power plant. They are placed flat or pressed onto the side wall of the container 2. It can also be an annular heating mat 3 adapted to the contour of the container 2. At the beginning of the drying process, the container 2 is placed on a transport device 4, e.g. a rack or container on wheels. The transport device 4 has a floor heater 5 and a pallet-like floor with insulation. In the exemplary embodiment, the transport device 4 is e.g. a rail-bound car. The drying station 1 comprises an insulating shell 6 surrounding a drying room with a ventilation opening 7 in its cover area. The insulating shell 6 is equipped to receive the container 2 with two pivotable 1/4 circular segment doors, to which the three heating mats 3 are fastened by means of a holding device (not shown) such that when the container 2 is introduced into the dry position within the insulating shell 6, the segment doors automatically close and the heating mats 3 are automatically brought into extensive mechanical contact with the container 2.
Zu diesem Zweck sind die Heizmatten 3 beispielsweise mittels (nicht gezeigter) Federelemente derart an beiden Segmenttüren aufgespannt, daß sie bei geöffneten Türen durch die von den Türen gebildete Öffnung verlaufen. Beim Heranfahren des Be¬ hälters 2 an die von den Türen gebildete Öffnung kommt er mit den Heizmatten 3 in Kontakt. Beim weiteren Einbringen des Be¬ hälters 2 legen sich die Heizmatten 3 somit selbsttätig an den Behälter 2 an und bewirken letztlich mittels der Feder¬ elemente ein Schließen der Türen.For this purpose, the heating mats 3 are stretched, for example, by means of spring elements (not shown) on both segment doors in such a way that they run through the opening formed by the doors when the doors are open. When the container 2 approaches the opening formed by the doors, it comes along the heating mats 3 in contact. When the container 2 is introduced further, the heating mats 3 thus automatically contact the container 2 and ultimately cause the doors to close by means of the spring elements.
Nach einem Einbringen des Behälters 2 in den Trockenraum in¬ nerhalb der Isolierschale 6 mit Hilfe der Transportvorrich¬ tung 4 und nach der Herstellung des großflächigen mechani¬ schen Kontakts zwischen den Heizmatten 3 und dem Behälter 2 wird mittels der Heizmatten 3 und des Bodenheizers 5 der Be¬ hälter 2 auf die zur Trocknung des in ihm befindlichen Mate¬ rials benötigte Temperatur aufgeheizt. Diese Temperatur ist für jeden individuellen Behälter 2, je nach der genauen Be¬ schaffenheit des Inhalts, wählbar und einstellbar.Im Anschluß daran wird mittels eines motorisch betriebenen Gebläses 10, das über eine Leitung 11 mit der Entlüftungsöffnung 7 verbun¬ den ist, und mittels einer durch ein Ventil 12 drosselbaren Belüftungsöffnung 13 für Luft L eine von unten nach oben ge¬ richtete Luftströmung innerhalb der Isolierschale 6 herge- stellt. Am Ende der Leitung 11 befindet sich ein Abluftventil 15, mit dem Abluft A gesteuert abgelassen werden kann.After the container 2 has been introduced into the drying chamber within the insulating shell 6 with the aid of the transport device 4 and after the large-area mechanical contact between the heating mats 3 and the container 2 has been established, the heating mats 3 and the floor heater 5 are used to heat the Container 2 is heated to the temperature required for drying the material in it. This temperature can be selected and set for each individual container 2, depending on the exact nature of the contents. Subsequently, by means of a motor-driven blower 10, which is connected to the ventilation opening 7 via a line 11, and by means of A ventilation opening 13 for air L, which can be throttled by a valve 12, produces an air flow within the insulating shell 6 directed from bottom to top. At the end of line 11 there is an exhaust air valve 15 with which exhaust air A can be discharged in a controlled manner.
Durch die somit erzielte Zuführung von Verdampfungswärme über die Wand des Behälters 2 in das in ihm befindliche Material wird der Feuchtigkeitsgehalt des Materials reduziert. Die da¬ bei in Dampfform austretende Feuchtigkeit wird mittels der Leitung 11 einem in die Leitung 11 geschalteten Kondensator 20 zugeführt. Dort kondensiert sie nach einem Wärmetausch mit zugeführtem Kühlmittel K. In einem am Kondensator 20 angeord- neten Kondensatmeßbehälter 21 wird die Menge der kondensier¬ ten Feuchtigkeit quantitativ erfaßt. Mittels der erfaßten Menge an kondensierter Feuchtigkeit kann der Endpunkt des Trocknungsvorgangs festgelegt werden. Mittels der durch das Ventil 22 absperrbaren Ablaßleitung 23 kann die kondensierte Feuchtigkeit z.B. einem Abwasserkanal zugeführt werden. Durch den großflächigen mechanischen Kontakt der Heizmatten 3 mit dem Behälter 2 ist eine Trocknung des Materials bei ge¬ ringem Energieaufwand und kurzer Trocknungszeit möglich. The resultant supply of heat of vaporization via the wall of the container 2 into the material contained therein reduces the moisture content of the material. The moisture emerging in vapor form is fed via line 11 to a condenser 20 connected into line 11. There it condenses after a heat exchange with supplied coolant K. The amount of the condensed moisture is quantitatively recorded in a condensate measuring container 21 arranged on the condenser 20. The end point of the drying process can be determined by means of the detected amount of condensed moisture. By means of the drain line 23, which can be shut off by the valve 22, the condensed moisture can be supplied, for example, to a sewer. Due to the large-area mechanical contact of the heating mats 3 with the container 2, drying of the material is possible with low expenditure of energy and a short drying time.

Claims

Patentansprüche claims
1. Trocknungsstation (1) zur Trocknung von in einem Behälter (2) befindlichem Material, insbesondere von kontaminiertem Abfall einer Kernkraftwerksanlage, d a d u r c h g e k e n n z e i c h n e t , daß minde¬ stens eine Heizmatte (3) zur Zuführung von Verdampfungswärme in den Behälter (2) vorgesehen ist.1. Drying station (1) for drying material located in a container (2), in particular contaminated waste from a nuclear power plant, so that at least one heating mat (3) is provided for supplying heat of vaporization to the container (2).
2. Trocknungsstation (1) nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß eine Hal¬ tevorrichtung vorgesehen ist, die beim Einbringen des Behäl¬ ters (2) in die Trockenposition selbsttätig einen großflächi¬ gen mechanischen Kontakt zwischen der Heizmatte (3) und dem Behälter (2) herstellt.2. Drying station (1) according to claim 1, characterized in that a holding device is provided which automatically brings a large-area mechanical contact between the heating mat (3) and the container (2) into the drying position when the container (2) is introduced. 2) manufactures.
3. Trocknungsstation (1) nach Anspruch 1 oder 2, g e k e n n z e i c h n e t d u r c h eine den Behälter (2) mitsamt der Heizmatte (3) in der Trocknungsposition umge- bende Isolierschale (6) , die einen Wandbereich sowie einen mit einer Entlüftungsöffnung (7) versehenen Deckelbereich aufweist.3. Drying station (1) according to claim 1 or 2, characterized by an insulating shell (6) surrounding the container (2) together with the heating mat (3) in the drying position and having a wall area and a lid area provided with a ventilation opening (7) .
4. Trocknungsstation (1) nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , daß ein an einen Kondensatmeßbehälter (21) angeschlossener Kondensator (20) mit der Entlüftungsöffnung (7) verbunden ist.4. drying station (1) according to claim 3, d a d u r c h g e k e n n e e c h e that a condenser (20) connected to a condensate measuring container (21) is connected to the vent opening (7).
5. Trocknungsstation (1) nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , daß eine zum5. Drying station (1) according to one of claims 1 to 4, d a d u r c h g e k e n n z e i c h n e t that one for
Transport des Behälters (2) vorgesehene Transportvorrichtung (4) einen Bodenheizer (5) sowie einen palettenartig ausgebil¬ deten Boden mit einer Isolierung umfaßt, wobei der Boden zum Tragen des Behälters (2) vorgesehen ist.Transport of the container (2) provided transport device (4) comprises a floor heater (5) and a pallet-like bottom with an insulation, the bottom being provided for carrying the container (2).
6. Trocknungsstation (1) nach einem der Ansürüche 3 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß zur Ver- teilung der Verdampfungswärme in der Isolierschale (6) eine Belüftungsöffnung (13) vorgesehen ist, über die ein Belüf¬ tungsmittel (L) einleitbar ist. 6. Drying station (1) according to one of claims 3 to 5, characterized in that for division of the heat of vaporization in the insulating shell (6), a ventilation opening (13) is provided, through which a ventilation means (L) can be introduced.
EP95931898A 1994-10-04 1995-09-21 Drying station for liquid or damp waste Expired - Lifetime EP0784854B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4435236 1994-10-04
DE4435236 1994-10-04
PCT/DE1995/001301 WO1996010830A1 (en) 1994-10-04 1995-09-21 Drying station for liquid or damp waste

Publications (2)

Publication Number Publication Date
EP0784854A1 true EP0784854A1 (en) 1997-07-23
EP0784854B1 EP0784854B1 (en) 1999-03-10

Family

ID=6529785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95931898A Expired - Lifetime EP0784854B1 (en) 1994-10-04 1995-09-21 Drying station for liquid or damp waste

Country Status (7)

Country Link
US (1) US5839206A (en)
EP (1) EP0784854B1 (en)
JP (1) JP3537442B2 (en)
DE (1) DE59505317D1 (en)
ES (1) ES2129851T3 (en)
RU (1) RU2133992C1 (en)
WO (1) WO1996010830A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7491861B2 (en) * 2002-07-31 2009-02-17 Studsvik, Inc. In-drum pyrolysis
US6263591B1 (en) * 2000-01-25 2001-07-24 Victor M. La Porte Sports equipment drying container
US7096600B2 (en) * 2002-12-13 2006-08-29 Holtec International, Inc. Forced gas flow canister dehydration
WO2006014293A2 (en) * 2004-07-02 2006-02-09 Aqualizer, Llc Moisture condensation control system
US7707741B2 (en) * 2005-06-06 2010-05-04 Holtec International, Inc. Method and apparatus for dehydrating high level waste based on dew point temperature measurements
EP2227665B8 (en) 2007-12-21 2018-06-06 Holtec International, Inc. Method for preparing a container loaded with wet radioactive elements for dry storage
US9421587B2 (en) * 2011-04-18 2016-08-23 Japan Pallet Rental Corporation Pallet wiping device, pallet cleaning device, and pallet work line
JP6831829B2 (en) * 2018-03-09 2021-02-17 株式会社オー・シー・エル Cask drying system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040973A (en) * 1974-01-03 1977-08-09 Magyar Tudomanyos Akademia Izotop Intezete Process and apparatus for the concentration and storage of liquid radioactive wastes
DE3432103A1 (en) * 1984-08-31 1986-03-13 Kraftwerk Union AG, 4330 Mülheim Method of reducing the volume of radioactively charged liquids and ribbed body for use thereby
FR2660788A1 (en) * 1990-04-05 1991-10-11 Commissariat Energie Atomique Cyclone-effect concentrator for the treatment of radioactive effluents
DE4023163C2 (en) * 1990-07-20 1998-07-09 Siemens Ag Drying station and facility for the treatment of liquid radioactive waste
DE9018112U1 (en) * 1990-07-20 1995-06-29 Siemens Ag Device for treating liquid radioactive waste
JPH06196092A (en) * 1992-12-24 1994-07-15 Hitachi Ltd Manufacture of cathode-ray tube
JPH0743496A (en) * 1993-07-28 1995-02-14 Hitachi Ltd Evaporation processing of radioactive waste liquid
JPH07260645A (en) * 1994-03-17 1995-10-13 Power Reactor & Nuclear Fuel Dev Corp Automatic evaporation drier

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9610830A1 *

Also Published As

Publication number Publication date
EP0784854B1 (en) 1999-03-10
RU2133992C1 (en) 1999-07-27
WO1996010830A1 (en) 1996-04-11
JP3537442B2 (en) 2004-06-14
DE59505317D1 (en) 1999-04-15
ES2129851T3 (en) 1999-06-16
US5839206A (en) 1998-11-24
JPH10506465A (en) 1998-06-23

Similar Documents

Publication Publication Date Title
EP0592654B1 (en) Device for evaporating preferably liquid substances, in particular reagents, or for preparing or analyzing sampled materials
EP0053777A1 (en) Method and apparatus for heating organic waste by biological treatment
DE19530471A1 (en) Assembly converts organic kitchen wastes by digester tank and heat exchanger
EP1150083B1 (en) Process and apparatus for drying moist material
EP0296645A1 (en) Process for composting organic material and apparatus therefor
EP0784854A1 (en) Drying station for liquid or damp waste
DE102009001024A1 (en) Method for drying sludge within a drying chamber, comprises circulating drying air in the drying chamber, where the drying air is brought in contact with the sludge and the circulation of the drying gas is regulated by a control
DD296210A5 (en) METHOD AND DEVICE FOR REMOVING FLUID SUBSTANCES FROM UNDERGROUND AND COMPARABLE MATERIALS
EP0077960B2 (en) Cooled products container for cooling cooled products in a container
DE3637700A1 (en) METHOD FOR REGENERATING A DRYING CARTRIDGE LOADED WITH MOISTURE AND DEVICE FOR CARRYING OUT SUCH A METHOD
EP0610488A1 (en) Process and device for drying industrial casks.
DE112020005882T5 (en) INTEGRATED MATERIAL DRYING AND COOLING MACHINE
WO1992002023A1 (en) Process and filling adapter for the in-drum drying of liquid radioactive waste
DE3543248A1 (en) Device for drying wood
DE102007038105A1 (en) Method of drying biomass e.g. wood chips, comprises supplying the mass into drying container via lockable inlet, circulating and mixing the mass by circulating drag chain, and heating the mass by supplying dry air through radial ventilator
DE19951627A1 (en) Wood drying equipment comprizes chamber fed with heated pressurized fresh air as circulated and drawn off as moisture-laden air to associated condensate container via three-way valve arrangement.
AT507766A1 (en) METHOD FOR DRYING SOLID SUBSTANCES WITH MINIMUM USE OF ENERGY
DE19860181C1 (en) Water removal from contaminated residues in concrete pans heated at the base and covered by a semipermeable membrane.
EP1010680B1 (en) Composting system
EP0413992A2 (en) Process and apparatus for aerobic, fermentative hydrolysis, particularly for composting of organic materials
EP0486712B1 (en) Apparatus for the surface treatment of substrates
DE19930223A1 (en) New mobile composting container with cavity wall manufactured by simple adaptation of existing design
CH622872A5 (en) Apparatus for removing gases from cylinders
DE19963092A1 (en) Solar-powered dryer for air-permeable friable material such as kindling wood, in which wood is layered in drying cavity
DE2057413A1 (en) Garbage composting cell

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19961204

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB LI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19980810

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SIEMENS SCHWEIZ AG

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59505317

Country of ref document: DE

Date of ref document: 19990415

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19990421

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2129851

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: SIEMENS AKTIENGESELLSCHAFT TRANSFER- FRAMATOME ANP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: AREVA NP GMBH

Free format text: FRAMATOME ANP GMBH#FREYESLEBENSTRASSE 1#91058 ERLANGEN (DE) -TRANSFER TO- AREVA NP GMBH#PAUL-GOSSEN-STRASSE 100#91052 ERLANGEN (DE)

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWALT DR. MICHAEL FISCHER

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Ref country code: FR

Ref legal event code: CA

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59505317

Country of ref document: DE

Representative=s name: TERGAU & WALKENHORST PATENTANWAELTE - RECHTSAN, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 59505317

Country of ref document: DE

Representative=s name: TERGAU & WALKENHORST PATENTANWAELTE - RECHTSAN, DE

Effective date: 20130618

Ref country code: DE

Ref legal event code: R081

Ref document number: 59505317

Country of ref document: DE

Owner name: AREVA GMBH, DE

Free format text: FORMER OWNER: AREVA NP GMBH, 91052 ERLANGEN, DE

Effective date: 20130618

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20130923

Year of fee payment: 19

Ref country code: DE

Payment date: 20130927

Year of fee payment: 19

Ref country code: CH

Payment date: 20130923

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20130920

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20130918

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59505317

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140921

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59505317

Country of ref document: DE

Effective date: 20150401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150529

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140930

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150401

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140930

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140930

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20151028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140922