EP1418394A2 - Procédé pour le séchage de matériau inflammable - Google Patents

Procédé pour le séchage de matériau inflammable Download PDF

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Publication number
EP1418394A2
EP1418394A2 EP03450250A EP03450250A EP1418394A2 EP 1418394 A2 EP1418394 A2 EP 1418394A2 EP 03450250 A EP03450250 A EP 03450250A EP 03450250 A EP03450250 A EP 03450250A EP 1418394 A2 EP1418394 A2 EP 1418394A2
Authority
EP
European Patent Office
Prior art keywords
drying
temperature
drying air
dryer
air
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
EP03450250A
Other languages
German (de)
English (en)
Other versions
EP1418394B1 (fr
EP1418394A3 (fr
Inventor
Erwin Brunnmair
Robert Kolleger-Riedler
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.)
Binder and Co AG
Original Assignee
Binder and Co 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 Binder and Co AG filed Critical Binder and Co AG
Publication of EP1418394A2 publication Critical patent/EP1418394A2/fr
Publication of EP1418394A3 publication Critical patent/EP1418394A3/fr
Application granted granted Critical
Publication of EP1418394B1 publication Critical patent/EP1418394B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/26—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by reciprocating or oscillating conveyors propelling materials over stationary surfaces; with movement performed by reciprocating or oscillating shelves, sieves, or trays
    • 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

Definitions

  • the invention relates to a method for drying combustible material to be dried according to the preamble of claim 1.
  • Procedures of this type are primarily used to: thermodynamic contact of a drying good with a Drying gas, such as air heated via a heating device correspondingly high temperatures, the material to be dried in one Extract dryer water.
  • a Drying gas such as air heated via a heating device correspondingly high temperatures
  • the material to be dried in one Extract dryer water is particularly confronted with the problem that by heating the material to be dried and reacting with the oxygen contained in the drying air high There is a risk of ignition.
  • an inerting of the drying cycle i.e. one Prevention of the risk of inflammation, especially when switching on and off It is imperative to shut down these drying systems.
  • the absolute Moisture of the drying air is raised until a Oxygen content below the explosion limit of the respective Drying goods can be guaranteed with certainty.
  • The is in regular operation at temperatures of the drying gas reached about 80 ° C, the respective setpoint to the the respective items to be dried can be coordinated. at If these setpoints are exceeded, the Drying gas temperature. So that stands a safe and Inexpensive drying system for drying goods with high organic and / or flammable components.
  • Claim 2 sees an advantageous embodiment of the Regulation of the temperature of the cooling medium before by the regulation the temperature of the cooling medium by supplying additional Cooling medium to the cooling device takes place.
  • Claim 3 done in a simple manner by exceeding the Temperature of the drying gas at the point of exit from the Cooling device a signal to a specified setpoint Opening a valve is set, causing the closed Circulation of the cooling medium in the cooling device additional amount of the cooling medium is supplied.
  • the material to be dried is cleaned using a suitable Conveyor 1 and a feeder 2 the dryer 3 fed.
  • the items to be dried are light, for example flammable material, e.g. due to a high carbon content, as is the case with biogenic substances.
  • the Dryer can be designed differently, so it can about a drum, belt, stationary fluid bed or Acting disc dryer.
  • the illustrated in Figure 1 Embodiment is an oscillating dryer, the has a sieve tray 5 accommodated in a housing 4.
  • the housing 4 is here via spring assemblies 6 and one corresponding vibration drive 8 set in vibration.
  • About the vibrating part 5 of the dryer 3 can do that Items to be dried are moved in the direction of the discharge 7.
  • the Dryer 3 is via a line 34 and a Air connection piece 12 drying air supplied using a hot gas generator 9 was heated.
  • the hot gas generator for this purpose has a burner 10 which is equipped with fuel, preferably gas or oil.
  • the fuel supply can be controlled via a controller 11.
  • a Blower 32 is combustion air to the hot gas generator 9 fed.
  • a silencer 33 can optionally be used be provided.
  • the drying air is in the lower areas of the dryer 3 fed and via air suction 13, which is in the upper Area of the dryer 3 are removed. On their way from Air connection piece 12 flows through to the air exhausts 13 the sieve tray 5 and the conveyed thereon Be dried.
  • the drying air is supplied via lines 14 Filter and / or centrifugal separator 15 supplied with the Parts of the drying goods carried with the drying air separates. These portions can be about an outlet 16 a mixer 17 are transported, where they with the Dried material from the discharge 7 of the dryer 3 is mixed and the product delivery 18 are supplied.
  • a washer 21 which too can be regarded as a capacitor.
  • the rewind will fed back to the pump 23 via a line 25, so that a closed cooling water circuit is realized.
  • the valve 26 via a temperature sensor 27 is controlled, the temperature the drying air at the outlet of the scrubber 21 measures. Excess water or condensate can be removed from a collector 38 of the washer 21 are discharged via an outlet 36.
  • the drying air is subsequently carried out via line 28 returned to the hot gas generator 9, whereby a closed circuit of the drying air results. Furthermore can be removed via an exhaust air line 29 drying air be, the amount of drying air discharged over a Control member 30 is adjustable.
  • a silencer 31 is provided. The amount of exhaust air is thereby preferably regulated via a reference pressure measurement. In order to can influence the pressure level in a closed air circuit become.
  • the inventive method is drying air over the Line 34 fed to the dryer 3.
  • the drying air leaves is characterized by their temperature, which is in the Depending on the application, dryer 3 is usually between 200-500 ° C an absolute humidity (the contained mass pure water vapor per kilogram of dry air), as well as one relative humidity (the percentage of absolute Moisture compared to the mass of water vapor that the Air at the same temperature until saturated characterize).
  • the drying air flows in the dryer 3, depending on the material to be dried Application will have a different dry content.
  • the drying air transfers heat of vaporization to the mass of water contained in the material to be dried, whereby the Dryness of the material to be dried increases and the absolute Humidity of the drying air increases.
  • the increase in absolute Amount of water vapor in the drying air as well as the lowering the temperature of the drying air due to the deprived of it Evaporation heat also raises the relative humidity of the Drying air.
  • the drying air in line 14 has thus a higher absolute compared to that in line 34 Humidity, a higher relative humidity and a lower Temperature up.
  • This outlet temperature is also from Dryness of the material to be dried and its throughput detach the dryer 3.
  • About measuring the temperature of the Drying air using a temperature sensor 37 in the Line 14 and a corresponding regulation of Fuel supply to the hot gas generator 9 via the Control device 11 can also control the Evaporation performance with constant throughput of Good drying done.
  • the drying air saturated with water vapor becomes the Hot gas generator 9, where depending on the fuel supply is heated to different degrees, and finally the Line 34 fed.
  • the absolute humidity of the drying air in line 34 this is essentially that on Corresponding exit point from the scrubber 21, plus that Amount of water vapor due to the combustion of hydrogen-containing compounds with oxygen in the Hot gas generator 9 is formed and less that amount along the transport route from the point of exit from the scrubber 21 condenses in line 34, although efforts should be made condensation processes outside the washer 21 prevention.
  • the temperature rise of the drying air at the exit point the washer 21 can, however, by supplying fresh Process water can be controlled directly via the valve 26.
  • a setpoint for example 80 ° C
  • the temperature of the Drying air at the point of exit from the scrubber 21 to set, via which the valve 26 is opened.
  • the valve 26 is opened to fresh, cool Process water to the cooling circuit of the washer 21 and thereby increasing its cooling ability.
  • the outlet temperature the drying air after scrubber 21 will decrease so that the valve 26 can be closed again as soon as the exit point moves below the setpoint again.
  • the target value can be matched to the respective material to be dried become. The energy used is therefore independent of Quality fluctuations in the material to be dried, for example different dryness, optimally used.
  • the dryer 3 through the vibration drive, which is also used for a promotion in Longitudinal direction, as well as only through the air flow be driven empty. Furthermore, an integrated Sprinkler system can be provided at about a total Power failure to ensure adequate security. alternative it is also conceivable to use a vibration drive Equip emergency power system.
  • the regulation of the pressure level also proves to be advantageous in the drying cycle, for example with the aid of a pressure measuring device 35 on the line 14.
  • a pressure measuring device 35 on the line 14.
  • To leak such as a suction of False air in the area of the loading and unloading of the drying goods with dryer 3, to keep it as low as possible, are at risk Ranges above a pressure reference value as a guide for the Exhaust air flap position of the control member 30 in the neutral Pressure area kept.

Landscapes

  • 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)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP20030450250 2002-11-08 2003-11-10 Procédé pour le séchage de matériau inflammable Expired - Lifetime EP1418394B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE16822002 2002-11-08
AT16822002A AT412742B (de) 2002-11-08 2002-11-08 Verfahren zur trocknung von entzündlichem trocknungsgut

Publications (3)

Publication Number Publication Date
EP1418394A2 true EP1418394A2 (fr) 2004-05-12
EP1418394A3 EP1418394A3 (fr) 2006-03-29
EP1418394B1 EP1418394B1 (fr) 2015-02-25

Family

ID=32097262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030450250 Expired - Lifetime EP1418394B1 (fr) 2002-11-08 2003-11-10 Procédé pour le séchage de matériau inflammable

Country Status (3)

Country Link
EP (1) EP1418394B1 (fr)
AT (1) AT412742B (fr)
ES (1) ES2537550T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907884A1 (fr) * 2006-10-25 2008-05-02 Giat Ind Sa Procede de traitement thermique d'un materiau, notamment du bois, et unite de traitement thermique mettant en oeuvre un tel procede
FR3007117A1 (fr) * 2013-06-14 2014-12-19 France Biomasse Dispositif de sechage de matieres sous forme dispersee par ventilation controlee a contre courant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019120583A1 (de) * 2019-07-30 2021-02-04 Huber Se Sprühkondensator, Trocknungsanlage sowie Verfahren zum Trocknen von feuchtem Gut

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1803259A1 (de) * 1968-10-16 1970-05-14 Basf Ag Verfahren zum Trocknen explosionsgefaehrlicher oder sauerstoffempfindlicher pulverfoermiger Stoffe
DE1729224A1 (de) * 1967-09-22 1971-06-09 Krauss Maffei Ag Verfahren zum Trocknen loesungsmittelfeuchter explosionsgefaehrlicher Gueter
DE2633165A1 (de) * 1976-07-23 1978-01-26 Udo Dipl Ing Jodeit Verfahren und vorrichtung zur durchfuehrung der energieeinsparung bei der trocknung von holzspaenen
DE2800238A1 (de) * 1978-01-04 1979-07-05 Fraunhofer Ges Forschung Verfahren zur verringerung der brand- und explosionsgefahr beim trocknen korn-, span- oder faserfoermiger stoffe
US4444016A (en) * 1981-05-20 1984-04-24 Airco, Inc. Heat exchanger apparatus
EP0124997A2 (fr) * 1983-04-01 1984-11-14 The BOC Group, Inc. Procédé de récupération de vapeur de dissolvant
DE4023518A1 (de) * 1990-07-24 1992-03-05 Fritz Egger Gmbh Verfahren und anlage zum trocknen von feuchtem gut
EP0541009A1 (fr) * 1991-11-06 1993-05-12 VOMM IMPIANTI E PROCESSI S.r.L. Procédé pour éliminer des polluants contenus dans le gaz obtenu lors du séchage de substrats
USRE35251E (en) * 1989-08-17 1996-05-28 Van Den Broek; Jos Sewage sludge treatment system
EP0832856A2 (fr) * 1996-09-26 1998-04-01 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procédé de séchage de matériaux indirectement chauffés, notamment de boues d'égout
WO2002016848A1 (fr) * 2000-08-24 2002-02-28 Tekmawood Oy Procede et appareil destine a l'utilisation de la chaleur rejetee dans le sechage et dans le traitement thermique du bois

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879857A (en) * 1974-02-27 1975-04-29 Amf Inc Spiral moisture equaliser and method of using same
US4089666A (en) * 1976-06-25 1978-05-16 Philip Morris Incorporated Method for control of air relative humidity with reduced energy usage
US4974337A (en) * 1989-10-30 1990-12-04 The Conair Group, Inc. Apparatus and method of drying and dehumidifying plastic
US5247809A (en) * 1991-10-02 1993-09-28 Austin-Berryhill Fabricators, Inc. Air washer and method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729224A1 (de) * 1967-09-22 1971-06-09 Krauss Maffei Ag Verfahren zum Trocknen loesungsmittelfeuchter explosionsgefaehrlicher Gueter
DE1803259A1 (de) * 1968-10-16 1970-05-14 Basf Ag Verfahren zum Trocknen explosionsgefaehrlicher oder sauerstoffempfindlicher pulverfoermiger Stoffe
DE2633165A1 (de) * 1976-07-23 1978-01-26 Udo Dipl Ing Jodeit Verfahren und vorrichtung zur durchfuehrung der energieeinsparung bei der trocknung von holzspaenen
DE2800238A1 (de) * 1978-01-04 1979-07-05 Fraunhofer Ges Forschung Verfahren zur verringerung der brand- und explosionsgefahr beim trocknen korn-, span- oder faserfoermiger stoffe
US4444016A (en) * 1981-05-20 1984-04-24 Airco, Inc. Heat exchanger apparatus
EP0124997A2 (fr) * 1983-04-01 1984-11-14 The BOC Group, Inc. Procédé de récupération de vapeur de dissolvant
USRE35251E (en) * 1989-08-17 1996-05-28 Van Den Broek; Jos Sewage sludge treatment system
DE4023518A1 (de) * 1990-07-24 1992-03-05 Fritz Egger Gmbh Verfahren und anlage zum trocknen von feuchtem gut
EP0541009A1 (fr) * 1991-11-06 1993-05-12 VOMM IMPIANTI E PROCESSI S.r.L. Procédé pour éliminer des polluants contenus dans le gaz obtenu lors du séchage de substrats
EP0832856A2 (fr) * 1996-09-26 1998-04-01 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procédé de séchage de matériaux indirectement chauffés, notamment de boues d'égout
WO2002016848A1 (fr) * 2000-08-24 2002-02-28 Tekmawood Oy Procede et appareil destine a l'utilisation de la chaleur rejetee dans le sechage et dans le traitement thermique du bois

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907884A1 (fr) * 2006-10-25 2008-05-02 Giat Ind Sa Procede de traitement thermique d'un materiau, notamment du bois, et unite de traitement thermique mettant en oeuvre un tel procede
WO2008056044A3 (fr) * 2006-10-25 2008-11-13 Nexter Munitions Procede de traitement thermique d'un materiau et unite de traitement thermique mettant en œuvre un tel procede
FR3007117A1 (fr) * 2013-06-14 2014-12-19 France Biomasse Dispositif de sechage de matieres sous forme dispersee par ventilation controlee a contre courant

Also Published As

Publication number Publication date
EP1418394B1 (fr) 2015-02-25
EP1418394A3 (fr) 2006-03-29
AT412742B (de) 2005-06-27
ES2537550T3 (es) 2015-06-09
ATA16822002A (de) 2004-11-15

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