EP0024475B1 - Verfahren und Vorrichtung zur Steuerung der Belüftung für ein Trockengut in einem Tunneltrockner - Google Patents

Verfahren und Vorrichtung zur Steuerung der Belüftung für ein Trockengut in einem Tunneltrockner Download PDF

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Publication number
EP0024475B1
EP0024475B1 EP80102467A EP80102467A EP0024475B1 EP 0024475 B1 EP0024475 B1 EP 0024475B1 EP 80102467 A EP80102467 A EP 80102467A EP 80102467 A EP80102467 A EP 80102467A EP 0024475 B1 EP0024475 B1 EP 0024475B1
Authority
EP
European Patent Office
Prior art keywords
air
tunnel
accordance
deflecting means
moved
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.)
Expired
Application number
EP80102467A
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German (de)
English (en)
French (fr)
Other versions
EP0024475A1 (de
Inventor
Claudio Eustacchio
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.)
Vogel and Noot Industrieanlagenbau GmbH
Original Assignee
Fuchs & Co AG fur Elektrodraht-Erzeugung und Maschinenbau
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 Fuchs & Co AG fur Elektrodraht-Erzeugung und Maschinenbau filed Critical Fuchs & Co AG fur Elektrodraht-Erzeugung und Maschinenbau
Priority to AT80102467T priority Critical patent/ATE5100T1/de
Publication of EP0024475A1 publication Critical patent/EP0024475A1/de
Application granted granted Critical
Publication of EP0024475B1 publication Critical patent/EP0024475B1/de
Expired legal-status Critical Current

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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
    • F26B21/022—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow
    • F26B21/028—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow by air valves, movable baffles or nozzle arrangements
    • 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
    • F26B15/10—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 a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—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 a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/16—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 a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by wheeled trucks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried

Definitions

  • the invention relates to a method and a device for controlling the ventilation for a dry material in a tunnel dryer, in particular for brick blanks arranged in settling positions, which are moved through the dryer against the air flow, according to the preamble of claims 1 and 4.
  • tunnel dryers of the type described above the tunnels of which are a few meters wide and a few meters high, correspondingly large wagons are conveyed in the longitudinal direction, on which the dry material is deposited in stages.
  • the air required to discharge the moisture in the dry material is directed through the tunnel dryer against the direction of movement of the wagons.
  • Dryers are known in which further hot air devices are provided over the length of the dryer tunnel, or in which the air is wholly or partly removed from the dryer tunnel, heated and then fed back in.
  • the air speed of the dry air through the tunnel dryer of the aforementioned type working in the countercurrent principle is approximately 0.5 to 2.0 m / sec, the air moving primarily along the upper cross section of the tunnel due to its heating, so that this is in the lower cross section and in the middle Dry sections of the tunnel dry very slowly.
  • the dry material Since the water on the surface of the dry material is evaporated more rapidly than can be replenished by the capillaries of the dry material with continuous ventilation of the dry material, the dry material begins to dry out quickly on the surface, so that it shrinks more quickly on the surface than inside. This can cause damage such as cracks, cracks, etc. to the dry goods.
  • tunnel dryers have been developed in which the circulating fans have been set up to be movable between the dryer car trains and ventilate the dry material in accordance with a specific program. This avoids the disadvantages of permanent ventilation described above, and the cars are also ventilated between the circulation fans.
  • DE-A-2 320 600 From DE-A-2 320 600 a method is known in which warm air is drawn in in the area of the furnace outlet.
  • the warm air is transported through the tunnel dryer with the aid of several circulation fans, which are arranged to be movable along rails both on the floor and on the ceiling of the tunnel dryer.
  • the air is sucked in and blown out after compression by such circulation fans arranged inside the tunnel dryer. This results in local air circulation.
  • the invention is therefore based on the object of intensifying drying by developing the tunnel driers formed with air deflecting bodies by means of improved ventilation control, without the need for energy-intensive circulation fans.
  • transverse air deflection bodies are arranged, which are streamlined and deflect the incoming compressed air to the dry goods moving under the air deflection bodies in the counterflow principle.
  • the air deflection bodies are mounted on movable slides, which, like the circulation fans, can be moved back and forth a few meters in the known dryers.
  • Drying is intensified by the proposed control of the ventilation of the drying material at controllable intervals without the need for energy-consuming circulation fans.
  • the dry air flows relatively slowly through the dryer tunnel, so that the control of the moisture gradient can be carried out in a simple manner in accordance with the requirements placed on the dry material. Due to the advantageous profiling of the air deflecting bodies and because they can be moved in the longitudinal direction, a corresponding flow profile can be formed so that the air flows through the drying tunnel in a wave shape.
  • the uniform drying of the drying material is ensured by the fact that the dryers are moved back and forth during the drying process and the drying material itself is conveyed to the drying air in the countercurrent principle.
  • the air deflecting bodies are designed as hollow bodies, heating would be conceivable, or an air pressure system could be provided within the air deflecting bodies, by means of which an influence on the air flowing through the tunnel dryer via nozzles or the like would be possible by applying vacuum or overpressure.
  • a tunnel dryer 1 is shown schematically.
  • This tunnel dryer 1 has a gate 2 on its left-hand entry side with respect to the figures and a gate 3 on its right-hand exit side Connection is established. Compressed air is introduced into the tunnel dryer 1 in the direction of the arrow 6 via this injection nozzle 5.
  • suction opening 7 In the area of the entry side there is a suction opening 7 in the upper part of the tunnel dryer 1, which is connected to a suction nozzle 8.
  • This suction nozzle 8 is connected to a suction device, not shown, which ensures that the air is extracted as moist exhaust air in the direction of arrow 9 from the tunnel dryer 1.
  • the figures also show dryer cars 10 which are moved continuously on rails 11 by means of a drive (not shown) in the direction of the arrows 12.
  • the drying material 13 On the dryer car is the drying material 13, which in the exemplary embodiments shown is formed by brick moldings which are stacked.
  • air deflection bodies 14 which can be moved back and forth in the longitudinal direction of the tunnel dryer 1 by means of slides 15 on rails 16. 1, can be connected to one another by a coupling 17, so that only a common drive is required, or, as shown in the figure, can be moved independently of one another so that the distance is freely adjustable between two adjacent air deflectors. As a result, the flow profile of the compressed air flow can be changed.
  • the air deflectors 14 and 18 are designed as hollow bodies and have a streamlined profile, so that on the one hand they ensure that the air is deflected downward to the dry material, but on the other hand prevent a disturbance of the flow by formation of eddies or the like.
  • the air flow 20 which is indicated by arrows in both figures, is directed downward between the stack of bricks and passes through the holes in the bricks, so that these are ventilated not only on their surface but also in the core and thus from the inside and not only dry from the outside. Since the tunnel cross section in Area of the air deflecting body 14, 18 is closed over its larger section by the air deflecting body and the passage cross section is thus considerably reduced, the air flow in the area of the air deflecting body is accelerated, so that intensive drying is achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
EP80102467A 1979-08-22 1980-05-06 Verfahren und Vorrichtung zur Steuerung der Belüftung für ein Trockengut in einem Tunneltrockner Expired EP0024475B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80102467T ATE5100T1 (de) 1979-08-22 1980-05-06 Verfahren und vorrichtung zur steuerung der belueftung fuer ein trockengut in einem tunneltrockner.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792934022 DE2934022A1 (de) 1979-08-22 1979-08-22 Verfahren und vorrichtung zur steuerung der belueftung fuer ein trockengut in einem tunneltrockner
DE2934022 1979-08-22

Publications (2)

Publication Number Publication Date
EP0024475A1 EP0024475A1 (de) 1981-03-11
EP0024475B1 true EP0024475B1 (de) 1983-10-19

Family

ID=6079056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80102467A Expired EP0024475B1 (de) 1979-08-22 1980-05-06 Verfahren und Vorrichtung zur Steuerung der Belüftung für ein Trockengut in einem Tunneltrockner

Country Status (3)

Country Link
EP (1) EP0024475B1 (enrdf_load_stackoverflow)
AT (1) ATE5100T1 (enrdf_load_stackoverflow)
DE (1) DE2934022A1 (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425523A1 (de) * 1984-07-11 1986-01-23 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm Tunneltrockner fuer ziegel oder dergleichen
FI895684A7 (fi) * 1988-03-29 1989-11-28 Gpki Rybopromy Flota Laitos elintarvikkeiden lämpökäsittelemiseksi
GB8926113D0 (en) * 1989-11-18 1990-01-10 Dowty Malta Limited Cooling of sheet material
DE4002643A1 (de) * 1990-01-30 1991-08-08 Meindl Josef Ohg Vorrichtung zum trocknen keramischer produkte, insbesondere ziegel
ATA121992A (de) * 1992-06-15 1996-08-15 Wienerberger Ziegelind Verfahren zum trocknen und/oder brennen von ziegelrohlingen
DE4428001C2 (de) * 1994-08-08 1998-10-01 Opel Alfred Dipl Ing Fh Vakuumtrockner für Schnitthölzer und Verfahren zum Trocknen von Holz
NL9401799A (nl) * 1994-10-31 1996-06-03 Oude Rijn Pannerden Bv Maschf Werkwijze en inrichting voor het reinigen van een droogtunnel.
NL1002267C2 (nl) * 1996-02-07 1997-08-08 Raadgevend Bureau Kortenbach B Ruimte en werkwijze voor het ontdooien van produkten.
DE102010024020B4 (de) * 2010-06-16 2019-08-01 Clyde Bergemann Drycon Gmbh Fördermittel und Verfahren zum Fördern von heißem Material
CN104215052B (zh) * 2014-09-03 2016-04-20 江苏宇达环保科技股份有限公司 一种scr催化剂干燥系统
ITUB20153865A1 (it) * 2015-09-17 2017-03-17 Stefano Capaccioli Essicatoio ad alta velocita' per laterizi e procedimento per la loro produzione
CN114294751B (zh) * 2021-12-31 2023-03-14 陇东学院 一种通风防潮窑洞
CN116766372B (zh) * 2023-06-14 2024-01-05 河北国亮新材料股份有限公司 一种耐火材料坯体的热处理工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950450C (de) * 1951-04-28 1956-10-11 Siemens Ag Trocken- oder Gluehofen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420296A (en) * 1922-06-20 Drying kiln
FR569094A (fr) * 1922-05-23 1924-04-07 Dispositifs et procédés de séchage
US1645738A (en) * 1926-04-07 1927-10-18 Frank C Chapman Drier
US1855401A (en) * 1930-04-19 1932-04-26 Theodore T Leonard Dry kiln
GB791702A (en) * 1955-09-26 1958-03-12 Anthony Bower Adams Improvements relating to dryers
FR1267201A (fr) * 1960-06-04 1961-07-21 Fan Systems Ltd Procédé et installation pour le séchage d'objets
DE1729230B1 (de) * 1967-12-11 1971-06-16 Keller Spezialtechnik Gmbh Tunneltrockner,insbesondere fuer keramische Erzeugnisse
BE767898A (nl) * 1971-06-01 1971-11-03 Samenwerkende Steennijveraars Werkwijze voor het drogen van gevormde kleimassa's en inrichting die zulke werkwijze toepast.
DE2320600B2 (de) * 1973-04-24 1975-07-10 Werner 8521 Neunkirchen Strohmenger Trocknungsvorrichtung für Keramikwaren

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950450C (de) * 1951-04-28 1956-10-11 Siemens Ag Trocken- oder Gluehofen

Also Published As

Publication number Publication date
DE2934022C2 (enrdf_load_stackoverflow) 1988-01-21
ATE5100T1 (de) 1983-11-15
DE2934022A1 (de) 1981-03-26
EP0024475A1 (de) 1981-03-11

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