EP3254041B1 - Procédé de fonctionnement automatique d'une installation de séchage - Google Patents

Procédé de fonctionnement automatique d'une installation de séchage Download PDF

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Publication number
EP3254041B1
EP3254041B1 EP16702928.9A EP16702928A EP3254041B1 EP 3254041 B1 EP3254041 B1 EP 3254041B1 EP 16702928 A EP16702928 A EP 16702928A EP 3254041 B1 EP3254041 B1 EP 3254041B1
Authority
EP
European Patent Office
Prior art keywords
drying chamber
drying
dried
items
value
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.)
Not-in-force
Application number
EP16702928.9A
Other languages
German (de)
English (en)
Other versions
EP3254041A1 (fr
Inventor
Peter Kurz
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.)
KBA Metalprint GmbH and Co KG
Original Assignee
KBA Metalprint GmbH and 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 KBA Metalprint GmbH and Co KG filed Critical KBA Metalprint GmbH and Co KG
Publication of EP3254041A1 publication Critical patent/EP3254041A1/fr
Application granted granted Critical
Publication of EP3254041B1 publication Critical patent/EP3254041B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/02—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle
    • F26B15/04—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle in a horizontal plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • 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
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • 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
    • F26B23/00—Heating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects

Definitions

  • the invention relates to a method for automated operation of a drying plant according to the preamble of claim 1. Such a method is made DE102013206272 B3 known.
  • DE 25 34 479 A1 is a temperature control device in a drying machine for running Garnbannen known, wherein an elongated in the direction of the yarn path drying chamber, which is bounded by a box-shaped frame, is provided. A connection of an air suction line lying above in the direction of flow is connected at one end to the drying chamber. An upstream connection of a suction device to draw air out of the system is connected to the air suction line. A downstream one of a circulation line is connected to the suction line and the underlying terminal is connected to the opposite end of the drying chamber.
  • the invention has for its object to provide a method for automated operation of a drying plant, in which a consumption of particular electrical energy is minimized taking into account regulations of explosion protection.
  • the achievable with the present invention consist in particular in that the automated operation of the drying plant whose consumption of electrical energy in particular is minimized taking into account regulations of explosion protection.
  • the gas consumption used for drying the material to be dried is minimized.
  • the proposed solution leads to a drying system after a cold start and / or after an interruption in the drying process completely automated comparatively fast, d. H. can be put back into production in a shorter time than in actions performed by an operator, which improves the economics of such a drying plant.
  • the single figure shows an example schematically and simplifies a drying system 01, as z. B. in industrial process technology for drying a drying material 03 in particular with the aid of air, flue gas or an inert gas such. As nitrogen or a noble gas is used.
  • This drying plant 01 has at least one drying space 02, wherein this of a few openings Apart from converted drying space 02 at least with a certain amount of air, ie the so-called air volume is filled.
  • a drying material 03 loaded with a solvent is fed to this drying space 02 of the drying installation 01 in a preferably continuous movement.
  • drying material 03 preferably cans of a metallic material are used, for.
  • the solvent is at least partially released in the drying room 02.
  • the solvent comes z. B. from the paint, with the drying material 03 has been previously treated.
  • the drying material 03 is preferably conveyed into the drying room 02 by means of a conveyor 02 passing through the drying space 02 in a transport direction T, and then conveyed out of the drying room 02 again after the drying process, wherein the conveyor 04 for example.
  • B. is designed as a conveyor belt.
  • the cans 03 forming the cans are arranged on or on this conveyor belt, in particular strung together. These cans are z. B. treated inside and / or outside with a solvent-containing paint.
  • the drying plant 01 is z. B. formed as a belt dryer.
  • the drying material 03 is dried during its passage through the drying room 02 in direct contact with a introduced into the drying room 02 by a heated to a process temperature flowing gas, wherein a z. B. arranged below the conveyor 04 heating element 06 of this gas, this drying material 03 drying gas z. B. is hot air and is heated directly or indirectly by the heating element 06.
  • the process temperature is the temperature at which the drying material 03 dries optimally, ie also as quickly as possible, without being damaged by the supplied heat.
  • the heating element 06 is z. B. as a burner, in particular as a gas burner.
  • For the gas to be heated by the heating element 06 and / or for a circulating air surrounding the drying material 03 is a Process temperature of z. B.
  • said gas from an initial temperature of z. B. 20 ° C to 25 ° C is heated to the process temperature.
  • the drying room 02 is in connection with the heating element 06 z. B. a recirculation system, in which at least one arranged in the drying room 02 recirculation fan 09 circulating air in the drying room 02 located.
  • the drying material 03 at least partially discharges its solvent into the drying space 02, ie, for example, to the circulating air.
  • the drying space 02 has at least one exhaust duct 07 with at least one exhaust fan 08, the at least one exhaust fan 08 in the drying room 02 the Drying material 03 flowing around gas together with the discharged from the drying material 03 in the drying room 02 solvent and the volume of air originally located in the drying room 02 as a volume of exhaust air from this drying space 02, wherein the term "exhaust volume” that amount or total amount of originally in the drying room 02 existing air and / or in the drying room 02 optionally registered gas and / or vaporized in the drying room 02 solvent referred to, which is currently in the drying room 02 of the drying unit 01 and to avoid a danger the at least one exhaust duct 07 is to be conveyed out of the drying room 02.
  • At least the air volume conveyed out of the drying space 02 is replaced by a supply air volume supplied to the drying space 02 via a supply air duct 11, wherein, for the supply air z. B. in particular oxygen-rich fresh air z. B. from a surrounding area of the drying plant 01 or from an outdoor area.
  • the supply of the supply air volume in the drying room 02 is z. B. by means of a formed in the drying space 02 negative pressure, this vacuum z. B. by a circulation of the air space located in the drying chamber 02 z. B. by means of at least one arranged in the drying room 02 circulating air fan 09.
  • a preferably electronic, in particular programmable control unit 12 is provided, this control unit 12, in particular for the production of a stable drying process, the gas heating element 06 at least in terms of the process temperature and / or the at least one exhaust fan 08 at least in terms of the exhaust air volume to be conveyed out to the drying space 02 and / or the at least one recirculating air fan 09 in each case regulates the air circulation caused by it in the drying space 02.
  • the process temperature of the gas heated by the heating element 06 and / or the exhaust air volume conveyed out of the drying space 02 by the at least one exhaust fan 08 and / or the at least one circulating air fan 09 are respectively monitored by sensors connected to the control unit 12.
  • the control unit 12 sets at least the exhaust air volume to be conveyed out of the drying space 02 by the at least one exhaust fan 08 to a first value suitable for the intended drying process, wherein the control unit 12 z. B. from a production planning system 14 receives corresponding information about the intended drying process, in particular also on whether the drying room 02 to be supplied drying material 03 in a drying plant 01 upstream production plant is currently in production or in a drying plant 01 upstream processing plant is currently in progress or not.
  • the control unit 12 After reaching this first value for the exhaust air volume to be conveyed out of the drying space 02 by the at least one exhaust fan 08, the control unit 12 sets the exhaust air volume to be pumped out of the drying space 02 by the at least one exhaust fan 08 to a higher second compared to its first value Value, wherein this second value for the of the at least one exhaust fan 08 from the drying room 02 pickzube assignednde exhaust volume of the control unit 12 z. B. is set at least five times as high as its first value. The rinsing time is in the control unit 12 z. B.
  • the volume exchange takes place z. B. with about 1000 to 1500 m 3 / h.
  • the rinsing time is z. B. 5 to 10 minutes.
  • the control unit 12 ignites the heating element 06 heating the gas.
  • the control unit 12 starts, for example. B. by an operation of a conveyor 04 driving drive 13 the passage of the material to be dried 03 through the drying room 02 and thus the drying process, once the heated gas from the heating element 06 has reached its process temperature.
  • the control unit 12 checks in a further operating situation of this drying installation 01, namely at an interruption in a feed of the drying material 03 to the drying room 02, wherein this interruption z. B. may also be the result of a production change, within a time of a planned cycle time of the drying material 03 by the drying space 02 dependent time interval, whether the supply of the drying material 03 is continued to the drying room 02, wherein this time interval begins to run at the time in the control unit 12 detects the interruption in the feed of the drying material 03 to the drying room 02.
  • the control unit 12 lowers at an interruption in the supply of the drying material 03 to the drying room 02 within a time interval dependent on the scheduled cycle time of the drying material 03 through the drying space 02 at least the exhaust air volume conveyed by the at least one exhaust fan 08 out of the drying room 02 of one for the current Drying process suitable first value to a lower compared to its first value second value, if the supply of the material to be dried remains interrupted until the expiration of the time interval in which the control unit checks whether the supply of the material to be dried is continued to the drying room.
  • control unit 12 preferably lowers the process temperature controlled by it, which is heated by the gas heating element 06 in the drying space 02, from a first value suitable for the current drying process to a second value which is lower than its first value, the control unit 12 for the heating element 06 to be heated gas as its first value a process temperature z. B. from about 180 ° C to 200 ° C sets. Also ends the control unit 12 with the achievement of the second value of the process temperature, in particular the supply of the drying material 03 to the drying room 02 by the control unit 12 z. B. the conveyor 04 driving drive 13 is actuated.
  • control unit 12 raises both the regulated by the heating element 06 heating the heating element 06 in the drying room 02 process temperature of the relatively lower second value the first value suitable for the drying process to be continued and, when the first value of the process temperature is reached, at least the exhaust air volume to be conveyed from the at least one exhaust fan 08 from the drying space 02 back from the second value to the first value suitable for the drying process to be continued.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)

Claims (12)

  1. Procédé pour le fonctionnement automatisé d'une installation de séchage (01),
    a) selon lequel un produit à sécher (03) est amené à une chambre de séchage (02) de l'installation de séchage (01) et traverse cette chambre de séchage (02),
    b) selon lequel au moins un ventilateur d'air vicié (08) transporte au moins une partie d'un volume d'air situé dans la chambre de séchage (02) sous forme de volume d'air vicié à l'extérieur de cette chambre de séchage (02), dans lequel au moins le au moins un ventilateur d'air vicié (08) est régulé par une unité de commande (12), au moins en ce qui concerne le volume d'air vicié à transporter à l'extérieur de la chambre de séchage (02), caractérisé en ce que
    c) l'unité de commande (12), lors d'une interruption de l'amenée du produit à sécher (03) à la chambre de séchage (02) pendant un intervalle de temps dépendant d'un temps de traversée prévu du produit à sécher (03) à travers la chambre de séchage (02), vérifie si l'amenée du produit à sécher (03) à la chambre de séchage (02) est poursuivie, dans lequel cet intervalle de temps commence à s'écouler au moment où l'unité de commande (12) détecte l'interruption de l'amenée du produit à sécher (03) à la chambre de séchage (02),
    d) l'unité de commande (12) diminue au moins le volume d'air vicié transporté par le au moins un ventilateur d'air vicié (08) à l'extérieur de la chambre de séchage (02) d'une première valeur adaptée au processus de séchage actuel à une deuxième valeur inférieure à la première valeur, lorsque, jusqu'à l'écoulement de l'intervalle de temps pendant lequel l'unité de commande (12) vérifie si l'amenée du produit à sécher (03) à la chambre de séchage (02) est poursuivie, l'amenée du produit à sécher (03) à la chambre de séchage (02) reste interrompue.
  2. Procédé selon la revendication 1, caractérisé en ce que le produit à sécher (03), pendant son passage à travers la chambre de séchage (02), est séché en contact direct avec un gaz en circulation chauffé à une température de traitement par un élément chauffant (06), dans lequel la température de traitement de l'élément chauffant (06) chauffant le gaz est régulée par l'unité de commande (12).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'un produit à sécher (03) chargé d'un solvant est amené à la chambre de séchage (02), dans lequel le produit à sécher (03) délivre sa charge de solvant au moins en partie dans la chambre de séchage (02) pendant son séchage.
  4. Procédé selon la revendication 3, caractérisé en ce que le au moins un ventilateur d'air vicié (08) transporte au moins une partie de la charge de solvant délivrée par le produit à sécher (03) dans la chambre de séchage (02), conjointement avec au moins une partie du volume d'air situé dans la chambre de séchage (02) sous forme de volume d'air vicié, à l'extérieur de cette chambre de séchage (02).
  5. Procédé selon la revendication 1, 2, 3 ou 4, caractérisé en ce qu'au moins le volume d'air transporté à l'extérieur de la chambre de séchage (02) est remplacé par un volume d'air frais amené à la chambre de séchage (02), dans lequel une injection du volume d'air frais dans la chambre de séchage (02) s'effectue sous l'action d'un vide formé dans cette chambre de séchage (02).
  6. Procédé selon la revendication 1, 2, 3, 4 ou 5, caractérisé en ce que l'unité de commande (12) diminue la température de traitement produite dans la chambre de séchage (02) par l'élément chauffant (06) chauffant le gaz, laquelle température est régulée par ladite unité, d'une première valeur adaptée au processus de séchage actuel à une deuxième valeur inférieure à sa première valeur.
  7. Procédé selon la revendication 6, caractérisé en ce que l'unité de commande (12), une fois la deuxième valeur de la température de traitement atteinte, met fin à l'amenée du produit à sécher (03) à la chambre de séchage (02).
  8. Procédé selon la revendication 7, caractérisé en ce que l'unité de commande (12) augmente la température de traitement produite dans la chambre de séchage (02) par l'élément chauffant (06) chauffant le gaz, laquelle température est régulée par ladite unité, de la deuxième valeur à la première valeur adaptée à la poursuite du processus de séchage et, une fois la première valeur de la température de traitement atteinte, au moins le volume d'air vicié destiné à être transporté à l'extérieur de la chambre de séchage (02) par le au moins un ventilateur d'air vicié (08) augmente de la deuxième valeur à nouveau à la première valeur adaptée à la poursuite du processus de séchage, lorsque l'amenée du produit à sécher (03) à la chambre de séchage (02) est poursuivie.
  9. Procédé selon la revendication 2, 3, 4, 5, 6, 7 ou 8, caractérisé en ce que l'unité de commande (12), pour le gaz destiné à être chauffé par l'élément chauffant (06), règle une température de traitement de sensiblement 180 °C à 200 °C en tant que première valeur de ladite température.
  10. Procédé selon la revendication 1, 2, 3, 4, 5, 6, 7, 8 ou 9, caractérisé en ce que le produit à sécher (03) est transporté pendant le processus de séchage au moyen d'un dispositif de transport (04) traversant la chambre de séchage (02).
  11. Procédé selon la revendication 1, 2, 3, 4, 5, 6, 7, 8, 9 ou 10, caractérisé en ce que des boîtes composées d'un matériau métallique sont utilisées comme produit à sécher (03).
  12. Procédé selon la revendication 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ou 11, caractérisé en ce que la température de traitement du gaz chauffé par l'élément chauffant (06) et/ou le volume d'air vicié transporté à l'extérieur de la chambre de séchage (02) par le au moins un ventilateur d'air vicié (08) sont surveillés chacun par des capteurs reliés à l'unité de commande (12).
EP16702928.9A 2015-02-06 2016-02-04 Procédé de fonctionnement automatique d'une installation de séchage Not-in-force EP3254041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015202163.7A DE102015202163B4 (de) 2015-02-06 2015-02-06 Verfahren zum automatisierten Betreiben einer Trocknungsanlage
PCT/EP2016/052348 WO2016124673A1 (fr) 2015-02-06 2016-02-04 Procédé de fonctionnement automatique d'une installation de séchage

Publications (2)

Publication Number Publication Date
EP3254041A1 EP3254041A1 (fr) 2017-12-13
EP3254041B1 true EP3254041B1 (fr) 2019-01-23

Family

ID=55300504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16702928.9A Not-in-force EP3254041B1 (fr) 2015-02-06 2016-02-04 Procédé de fonctionnement automatique d'une installation de séchage

Country Status (3)

Country Link
EP (1) EP3254041B1 (fr)
DE (1) DE102015202163B4 (fr)
WO (1) WO2016124673A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021118534A1 (de) 2021-07-19 2023-01-19 Ulf Reinhardt Trocknungsvorrichtung und Verfahren zur Trocknung von Lösemittel aufweisenden Behältereinheiten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE857925C (de) 1949-01-04 1952-12-04 Hartwig G Dipl-Ing Berge Verfahren zum Trocknen von vorwiegend lackierten Blechdosenruempfen
JPS51143743A (en) 1975-06-06 1976-12-10 Tsudakoma Ind Co Ltd Temperature control device for running thread dryer
DE3205962A1 (de) 1982-02-19 1983-09-01 Fleißner GmbH & Co, Maschinenfabrik, 6073 Egelsbach Waermebehandlungskanal
DE102013206268B3 (de) * 2013-04-10 2014-05-22 Kba-Metalprint Gmbh Bandtrockner mit einem Trocknungsraum
DE102013206272B3 (de) * 2013-04-10 2014-07-03 Kba-Metalprint Gmbh Bandtrockner mit einem Trocknungsraum und mit einer Kühlkammer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3254041A1 (fr) 2017-12-13
DE102015202163A1 (de) 2016-08-11
WO2016124673A1 (fr) 2016-08-11
DE102015202163B4 (de) 2016-12-29

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