EP2295909B1 - Procédé d'utilisation efficace des flux d'air chaud dans un système de séchage, notamment pour un atelier de peinture de véhicules - Google Patents

Procédé d'utilisation efficace des flux d'air chaud dans un système de séchage, notamment pour un atelier de peinture de véhicules Download PDF

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Publication number
EP2295909B1
EP2295909B1 EP09011579.1A EP09011579A EP2295909B1 EP 2295909 B1 EP2295909 B1 EP 2295909B1 EP 09011579 A EP09011579 A EP 09011579A EP 2295909 B1 EP2295909 B1 EP 2295909B1
Authority
EP
European Patent Office
Prior art keywords
air
dryer
clean gas
fresh air
exhaust
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
EP09011579.1A
Other languages
German (de)
English (en)
Other versions
EP2295909A1 (fr
Inventor
Fokko Dipl.-Ing. Crone
Norbert Heckmann
Otto Prof. Dr.-Ing. Carlowitz
Jürgen Dipl.-Ing. Pelz
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.)
Crone Fokko
Reschka Klaus
Original Assignee
Crone Fokko
Reschka Klaus
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Filing date
Publication date
Application filed by Crone Fokko, Reschka Klaus filed Critical Crone Fokko
Priority to EP09011579.1A priority Critical patent/EP2295909B1/fr
Publication of EP2295909A1 publication Critical patent/EP2295909A1/fr
Application granted granted Critical
Publication of EP2295909B1 publication Critical patent/EP2295909B1/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
    • 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
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F26B23/022—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • the invention relates to a method for the efficient use of the hot air streams in a vehicle paint shop, in which the exhaust air from the dryer is fed via an exhaust fan unit of a thermal afterburner and heated in this and out by means of a clean gas line as pure gas by Um Kunststoffrekuperatoren and at least one Frischluftrekuperator in which the recirculated air removed from the dryer and the fresh air are heated up.
  • the freshly painted dry goods such as karts
  • a support frame in the dryer, wherein the organic solvents are in the fresh paint of the dry goods
  • the karrossen After heating in the heating zone of the dryer, for example, the karrossen enter the holding zone of the dryer at about 140 - 180 ° C. Then the karrossen leave the dryer.
  • gaseous organic substances are removed by suction and fed as exhaust air (raw gas) a thermal afterburner (TNV) for the oxidative conversion of organic substances in the non-toxic compounds carbon dioxide and water vapor.
  • TSV thermal afterburner
  • the exhaust air Before entering the thermal post-combustion plant, the exhaust air is preheated in an exhaust air recuperator.
  • the clean gas from the post-combustion system initially cools down in the exhaust air recuperator and is then used to heat the dryer. This is done in such a way that the clean gas is passed through Umgasrekuperatoren, which removed the dryer circulating air reheat, whereupon the circulating air is returned to the dryer. Finally, the clean gas is passed through a fresh air recuperator, in which the fresh air to be supplied to the dryer is heated.
  • the invention has for its object to provide a more efficient method for energy saving in drying systems.
  • the fresh air thus passes in the recirculating fresh air mixture from the Umbuchrekuperatoren directly into the heating zone and in the holding zone.
  • the dryer 1 has an inlet lock 2, a heating zone 3, a holding zone 4 and an outlet lock 5.
  • the arrow 6 symbolizes the introduction of the dry goods, for example bodies, which are located on SKIDs.
  • the arrow 7 symbolizes the entry of the solvents, which are introduced with the color coatings of the dried goods in the dryer.
  • the arrow 8 symbolizes the dry goods leaving the dryer and SKIDs.
  • the thermal afterburner TNV is designated 9.
  • 10 and 12 are circulating air recuperators. 13 is an exhaust air recuperator, 14 is a catalyst stage, and 15 is a fresh air recuperator. With 21 an exhaust chimney is called.
  • the arrows 22 indicate the supply of fresh air from the environment.
  • the exhaust ducts are at 18 and the circulating air lines are designated 17.
  • the the dryer 1 via the exhaust ducts 18 extracted exhaust gas (crude gas) is fed via a fan unit 19 and the Ab povertyrekuperator 13 of the TNV 9 and there subjected to the oxidation process.
  • the cleaned by the conversion exhaust air leaves the TNV as clean gas in the clean gas line 20.
  • the clean gas is first passed through the Ab povertyrekuperator 13, then optionally through a catalyst stage 14, the Umluftrekuperator 10 and the Umbuchrekuperator 12 and finally flows through the Frischluftrekuperator 15, whereupon it over the exhaust chimney 21 exits into the atmosphere.
  • the heating zone 3 and the holding zone 4 of the dryer 1 is removed via circulating air ducts 17a circulating air, which is heated in the Um Kunststoffrekuperatoren 10 and 12 and returned via Um Kunststofftechnischen 17b in the heating zone and in the holding zone.
  • the inlet sluice 2 operated with negative pressure and the outlet sluice 5 operated with negative pressure are supplied with fresh air from the immediate vicinity (arrows 22).
  • Fresh air taken from the atmosphere and / or the installation space is supplied to the fresh air recuperator 15 via a fresh air line 23.
  • the heated fresh air is introduced via a fan unit 24 and fresh air partial lines 23a in the recirculating air ducts 17a.
  • a fresh air-fresh air mixture is passed through the Umbuchrekuperatoren 10 and 12, which is thus heated and returned via the circulating air lines 17b in the heating zone 3 and in the holding zone 4.
  • the temperature of the dryer 1 is regulated via a two flap valve system associated with each recirculating air recuperator 10 and 12 in the clean gas line 20 and in a bypass 27 bypassing the circulating air recuperator. Is requested by the dryer 1 warmer circulating air, so opens a first flap 25 in the clean gas line 20 the path of the clean gas Um Kunststoffrekuperator 10 and at the same time closes a second flap 26 the bypass 27, so that the clean gas flows through the Um Kunststoffrekuperator to there heat energy to the Circulating air. If the dryer 1 requires less heat, the system works in reverse order. The flap 25 in the clean gas line closes and the flap 26 in the bypass 27 opens, so that the clean gas is led around the Umbuchrekuperator 10 via the bypass 27. In the same way, the Umluftrekuperator 12 is moved.
  • the combustion chamber temperature of the TNV 9 is set to a constant temperature value, so that the clean gas temperature in the exit from the TNV and after flowing through the Abluftrekuperators 13 also has a constant temperature.
  • the required energy requirement of the dryer 1 is automatically regulated via the exit temperature of the clean gas behind the fresh air recuperator 15 at the temperature tap 29 in conjunction with the clean gas volume flow.
  • the clean gas temperature at the tap 29 is constantly set to, for example, 80 ° C.
  • a control unit 30 measures the clean gas temperature at the tap 29 and gives a manipulated variable to the frequency converter of the fresh air fan unit 24 and the exhaust fan unit 19.
  • the TNV 9 then also works with maximum power due to the maximum amount of air. If the individual zones of the dryer finally approach the setpoint temperature of the dryer, the flaps 25 close in the clean gas line and open the flaps 26 in the bypasses 27 at the recirculating air recuperators and the clean gas temperature drops to the maximum setpoint temperature of the clean gas. The controller 30 then lowers the speed of the fresh air and exhaust fan units. The heat output of the TNV 9 drops as the exhaust air volume flow decreases.
  • the control unit 30 monitors the clean gas temperature at each Umluftrekuperator 10, 12 behind the flaps 26 at points 34 (T1) in the bypasses 27 and in each subsequent strand of the clean gas line 20 at points 35 (T2 ). If the temperature level behind the flaps 26 (T1) approaches that in the respectively adjacent strand of the clean gas line 20 (T2) to a value to be determined (T1 must always be greater than T2), the reduction of the amounts of exhaust air is stopped. The best possible waste heat utilization is then achieved.
  • the self-regulating paint drying system recognizes each of these demand conditions and automatically adjusts itself to each of these dryer operating states.
  • the volume flow balance (exhaust air / fresh air) via a determined characteristic of the frequency of the fan units 19, 24 as a function of different volume flows or via the volume flow measuring points 31 and 32 in the exhaust duct 18 before the exhaust recuperator 13 and in the fresh air line 23.
  • the relative humidity of the clean gas behind the fresh air recuperator 15 measured at the measuring point 33 and displayed. If condensation forms in the exhaust chimney 21, the chimney temperature must be raised by the operator.
  • the required air volume balance in the dryer is set once fixed and locked via fixed throttle valves 28 on the exhaust air lines 18 and the individual fresh air supply lines 23a before entering the Um Kunststoffrekuperatoren during commissioning.

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

Claims (2)

  1. Procédé pour l'utilisation efficace des flux d'air chaud dans une installation de peinture de véhicules, dans lequel l'air d'évacuation issu du dispositif de séchage (1) est amené via une unité de ventilation d'air d'évacuation (19) à une installation de postcombustion thermique (9) et est chauffé dans celle-ci.et est conduit au moyen d'une conduite de gaz purifié (20) en tant que gaz purifié à travers des récupérateurs d'air de recirculation (10, 12) et au moins un récupérateur d'air frais (15) dans lesquels l'air de recirculation prélevé du dispositif de séchage et l'air frais sont chauffés,
    caractérisé en ce que
    l'air frais prélevé du récupérateur d'air frais (15) est mélangé avec l'air de recirculation prélevé du dispositif de séchage (1) et en ce que le mélange d'air de recirculation et d'air frais est chauffé dans les récupérateurs d'air de recirculation (10, 12) et est de nouveau amené au dispositif de séchage (1) et en ce que le bilan de volume d'air dans le dispositif de séchage (1) est réglé et arrêté de préférence une seule fois via des étrangleurs (28) stationnaires aux emplacements de prélèvement d'air d'évacuation du dispositif de séchage et au niveau des alimentations d'air frais individuelles devant les récupérateurs d'air de recirculation (10, 12) lors de la mise en route.
  2. Procédé selon la revendication 1, caractérisé en ce qu'un appareil de commande travaillant électroniquement (30) (système SLT) mesure la température de sortie du gaz purifié derrière le récupérateur d'air frais (15) à un emplacement de mesure (29) et donne des grandeurs de réglage à des convertisseurs de fréquence d'une unité de ventilation d'air frais (24) et à l'unité de ventilation d'air d'évacuation (19) et surveille, afin d'éviter un manque de chaleur dans le dispositif de séchage (1), les températures de gaz purifié (T1, T2) au niveau d'emplacements de mesure (34, 35) qui sont disposés dans la conduite de gaz purifié (20) derrière des volets (26, 25) dans des dérivations (27) pour le contournement des récupérateurs d'air de recirculation (10, 12) et dans la conduite de gaz purifié (20) derrière les récupérateurs d'air de recirculation (10, 12), et commande les quantités d'air d'évacuation pour une utilisation de chaleur perdue la meilleure possible.
EP09011579.1A 2009-09-10 2009-09-10 Procédé d'utilisation efficace des flux d'air chaud dans un système de séchage, notamment pour un atelier de peinture de véhicules Not-in-force EP2295909B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09011579.1A EP2295909B1 (fr) 2009-09-10 2009-09-10 Procédé d'utilisation efficace des flux d'air chaud dans un système de séchage, notamment pour un atelier de peinture de véhicules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09011579.1A EP2295909B1 (fr) 2009-09-10 2009-09-10 Procédé d'utilisation efficace des flux d'air chaud dans un système de séchage, notamment pour un atelier de peinture de véhicules

Publications (2)

Publication Number Publication Date
EP2295909A1 EP2295909A1 (fr) 2011-03-16
EP2295909B1 true EP2295909B1 (fr) 2016-02-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018005578A1 (de) 2018-07-16 2020-01-16 Wenker Gmbh & Co. Kg Thermodynamisch geregeltes Verfahren und thermodynamisch geregelte Trocknungsanlage zum Trocknen von Trocknungsgütern

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011119436B4 (de) 2011-11-25 2020-08-06 Eisenmann Se Vorrichtung zum Temperieren von Gegenständen
DE102012004246A1 (de) * 2012-03-01 2013-09-05 Eisenmann Ag Vorrichtung zur thermischen Nutzung eines Primärfluids und Anlage zur Behandlung von Gegenständen mit einer solchen
DE102012207312A1 (de) 2012-05-02 2013-11-07 Dürr Systems GmbH Prozesskammer mit Vorrichtung zum Einblasen von gasförmigem Fluid
EP2924381A1 (fr) * 2014-03-28 2015-09-30 Sabine Schindler Alimentation en air frais
PL2924380T3 (pl) 2014-03-28 2017-06-30 Sabine Schindler Palnik dodatkowy
DE102016001893A1 (de) 2016-02-17 2017-08-17 Eisenmann Se Brennereinheit und Vorrichtung zum Temperieren von Gegenständen
DE102017105094A1 (de) 2017-03-10 2018-09-13 Eisenmann Se Temperiervorrichtung für oberflächenbehandelte Gegenstände wie Fahrzeugteile

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Publication number Priority date Publication date Assignee Title
US3218727A (en) * 1962-07-17 1965-11-23 Dorothy C Lind Apparatus for freeze-drying and method
US4662840A (en) * 1985-09-09 1987-05-05 Hunter Engineering (Canada) Ltd. Indirect fired oven system for curing coated metal products
DE19654043C2 (de) * 1996-12-23 1998-05-28 Martin Dipl Ing Knabe Trockner mit Abgasreinigung mittels thermischer Nachverbrennung
DE19735322A1 (de) 1997-08-14 1999-02-18 Bayerische Motoren Werke Ag Durchlauflufttrocknungsanlage
DE19937901C2 (de) * 1999-08-11 2001-06-21 Eisenmann Kg Maschbau Trockner für eine Lackieranlage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018005578A1 (de) 2018-07-16 2020-01-16 Wenker Gmbh & Co. Kg Thermodynamisch geregeltes Verfahren und thermodynamisch geregelte Trocknungsanlage zum Trocknen von Trocknungsgütern
DE102018005578B4 (de) * 2018-07-16 2021-04-29 Wenker Gmbh & Co. Kg Thermodynamisch geregeltes Verfahren und thermodynamisch geregelte Trocknungsanlage zum Trocknen von Trocknungsgütern
US11940213B2 (en) 2018-07-16 2024-03-26 Wenker Gmbh & Co. Kg Thermodynamically regulated method and thermodynamically regulated drying system for drying goods to be dried

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Publication number Publication date
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