EP0851194A3 - Dryer with exhaust gas purification by thermal afterburning - Google Patents

Dryer with exhaust gas purification by thermal afterburning

Info

Publication number
EP0851194A3
EP0851194A3 EP97121908A EP97121908A EP0851194A3 EP 0851194 A3 EP0851194 A3 EP 0851194A3 EP 97121908 A EP97121908 A EP 97121908A EP 97121908 A EP97121908 A EP 97121908A EP 0851194 A3 EP0851194 A3 EP 0851194A3
Authority
EP
European Patent Office
Prior art keywords
gas
heat
dryer
furnace
drying
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.)
Withdrawn
Application number
EP97121908A
Other languages
German (de)
French (fr)
Other versions
EP0851194A2 (en
Inventor
Martin Dipl. Ing. Knabe
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.)
STARCOSA - TAG
Original Assignee
STARCOSA - TAG
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 STARCOSA - TAG filed Critical STARCOSA - TAG
Publication of EP0851194A2 publication Critical patent/EP0851194A2/en
Publication of EP0851194A3 publication Critical patent/EP0851194A3/en
Withdrawn legal-status Critical Current

Links

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
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/24—Wood particles, e.g. shavings, cuttings, saw dust

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)
  • Air Supply (AREA)

Abstract

Es wird ein Trockner fur Holzspäne und andere Schüttgüter beschrieben, mit einer Feuerung zur indirekten Beheizung desTrocknungsapparates. Der Trockner arbeitet im Umgas-Betrieb mit hoher Wasserdampfbeladung. Alle Trocknerabgase werden der Feuerung (6) zugeführt und dort thermisch nachverbrannt. Der Trocknungsapparat (1) besteht aus zwei Trocknungsstrecken. Die erste (2) wird mit der Wärme der einströmenden Brüden beheizt. Diese Wärme wird dem Rauchgasstrom in einem Gas- / Gas-Wärmetauscher (7) entzogen und der Brüdenrückführung (10) zugeführt. Die zweite Trocknungsstrecke (4) besteht aus einem Heizregister (5) dessen Wärme den Rauchgasen in einem Erhitzer (8) entzogen wird, der unmittelbar nach der Feuerung (6) angeordnet ist und die Rauchgastemperatur auf ca. 500° bis 600° senkt. Der Gas-/Gas-Wärmetauscher (7) kann hierdurch als einfache Blechkonstruktion ausgeführt werden.
Die Erfindung ermöglicht vergleichsweise eine sicherere Einhaltung der Nachverbrennungstemperatur, den Einsatz von Gas-/ Gas-Wärmetauschern in bewährter und einfacher Blechausführung und eine bessere Wärmenutzung.

Figure 00000001
A dryer for wood chips and other bulk materials is described, with a furnace for indirect heating of the drying apparatus. The dryer works in the gas operation with a high water vapor load. All dryer exhaust gases are fed to the furnace (6) where they are re-burned thermally. The drying apparatus (1) consists of two drying sections. The first (2) is heated with the heat of the incoming vapors. This heat is extracted from the flue gas stream in a gas / gas heat exchanger (7) and fed to the vapor return (10). The second drying section (4) consists of a heating register (5), the heat of which is extracted from the flue gases in a heater (8), which is arranged immediately after the furnace (6) and lowers the flue gas temperature to approximately 500 ° to 600 °. The gas / gas heat exchanger (7) can thus be designed as a simple sheet metal construction.
The invention enables comparatively more reliable compliance with the post-combustion temperature, the use of gas / gas heat exchangers in a proven and simple sheet metal design and better use of heat.
Figure 00000001
EP97121908A 1996-12-23 1997-12-12 Dryer with exhaust gas purification by thermal afterburning Withdrawn EP0851194A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19654043 1996-12-23
DE19654043A DE19654043C2 (en) 1996-12-23 1996-12-23 Dryer with exhaust gas cleaning using thermal post-combustion

Publications (2)

Publication Number Publication Date
EP0851194A2 EP0851194A2 (en) 1998-07-01
EP0851194A3 true EP0851194A3 (en) 1998-08-26

Family

ID=7816029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121908A Withdrawn EP0851194A3 (en) 1996-12-23 1997-12-12 Dryer with exhaust gas purification by thermal afterburning

Country Status (4)

Country Link
US (1) US5950322A (en)
EP (1) EP0851194A3 (en)
CA (1) CA2225569A1 (en)
DE (1) DE19654043C2 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10011177A1 (en) * 2000-03-08 2001-09-20 Valmet Panelboard Gmbh Drying of wood particles as chips or fibers and the like has an initial drying stage partially heated by cleaned exhaust gas from the main drier where hot gases are the drying medium from a combustion chamber
DE20023040U1 (en) * 2000-07-25 2002-12-05 B.I.M. Textil Mietservice Betriebshygiene GmbH, 99834 Gerstungen Arrangement for removing pollutants e.g. for environmentally friendly cleaning of contaminated textiles, such as industrial cleaning cloths with solvent residues
DE10056459C1 (en) 2000-11-14 2002-04-04 Fraunhofer Ges Forschung Wood fibre treatment method has closed drying circuit supplied with steam-gas mixture separated from dried wood fibres
DE10157596C1 (en) * 2001-11-23 2003-03-20 Fraunhofer Ges Forschung Fibrous substance preparation process involves diverting part flow into second heat exchanger before first heat exchanger in flow direction
DE10221367B4 (en) * 2002-05-13 2006-05-11 Bankwitz, Robert, Dr. Pneumatic centrifugal dryer
JP4758846B2 (en) * 2005-11-18 2011-08-31 東京エレクトロン株式会社 Drying apparatus, drying method, and drying program, and substrate processing apparatus, substrate processing method, and substrate processing program having the same
EP1843114A1 (en) * 2006-04-06 2007-10-10 Swedish Exergy Consulting AB Dryer plant
EP1916478A3 (en) * 2006-10-24 2011-05-04 Fritz Egger GmbH & Co. OG Drying device heated by hot gas
FR2907884B1 (en) * 2006-10-25 2012-12-21 Giat Ind Sa METHOD FOR THERMALLY TREATING A MATERIAL, IN PARTICULAR WOOD, AND THERMAL TREATMENT UNIT USING SUCH A METHOD
US20080223267A1 (en) * 2007-03-13 2008-09-18 Alstom Technology Ltd Direct sorbent preparation/feed apparatus and method for circulating fluidized bed boiler systems
EP2078911B1 (en) * 2008-01-10 2011-08-17 Douglas Technical Limited Method for continuous drying of bulk material, in particular of wood fibres and/or wood chippings
DE102008012792B4 (en) * 2008-03-05 2013-01-03 Eisenmann Ag Dryer for paint shop
US8142727B2 (en) * 2008-12-09 2012-03-27 Eisenmann Corporation Valveless regenerative thermal oxidizer for treating closed loop dryer
SI2230477T1 (en) * 2009-03-10 2015-04-30 Kronotec Ag Wood chips drying plant for drying wood chips and method for drying wood chips
EP2411749A4 (en) * 2009-03-25 2016-01-20 Saxlund Internat Holding Ab System and method for drying
EP2295909B1 (en) * 2009-09-10 2016-02-24 Crone, Fokko Method for efficient use of hot air streams in a drying system, in particular for a vehicle body painting system
CN101915497B (en) * 2010-08-13 2012-07-04 李相荣 Lignite-drying and quality-improving process for preparing superheated steam from waste heat steam
CN103727751B (en) * 2013-11-26 2015-09-09 王霞 A kind of combustion type drying box
CN104501570B (en) * 2014-12-17 2017-01-04 福建省永安林业(集团)股份有限公司 A kind of dry kiln device
CN104501547B (en) * 2014-12-17 2017-01-04 福建省永安林业(集团)股份有限公司 A kind of dry kiln system of radiator, furnace gas mixing application
US11142717B2 (en) 2019-03-22 2021-10-12 General Electric Company Hybrid boiler-dryer and method
CN110762998A (en) * 2019-10-31 2020-02-07 武汉钢铁有限公司 Coal dryer, coal drying system and coal drying method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE382265C (en) * 1923-10-01 Maschf Drying and roasting drum heated by means of Perkins pipes
US2798693A (en) * 1951-09-17 1957-07-09 Bojner Gustav Rotary heat exchangers
US3274698A (en) * 1963-11-01 1966-09-27 Exxon Research Engineering Co Apparatus for drying particulate materials
EP0047636A2 (en) * 1980-09-08 1982-03-17 Chemetron Process Equipment, Inc. Rotary dryer
DE3534260A1 (en) * 1985-09-26 1987-04-02 Plonka Dohren Marianne Method for thermal drying of temperature-sensitive materials in rotary drums as well as devices for implementing this method
WO1989011072A1 (en) * 1988-05-10 1989-11-16 M. Kaindl Holzindustrie Process for low-emission drying of wood chips
DE4017806A1 (en) * 1990-06-01 1991-12-05 Koerting Ag METHOD AND SYSTEM FOR THE CONTINUOUS DRYING OF WOODCHIPS, WOOD FIBERS OR OTHER SHEET GOODS
DE4427709A1 (en) * 1994-06-08 1996-01-11 Martin Knabe Drying of solid particles, esp. wood for chipboard mfr.
EP0714006A1 (en) * 1994-11-24 1996-05-29 W. Kunz AG Process for drying a substance, in particular wood chips

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676500A5 (en) * 1990-05-18 1991-01-31 Werner Kunz

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE382265C (en) * 1923-10-01 Maschf Drying and roasting drum heated by means of Perkins pipes
US2798693A (en) * 1951-09-17 1957-07-09 Bojner Gustav Rotary heat exchangers
US3274698A (en) * 1963-11-01 1966-09-27 Exxon Research Engineering Co Apparatus for drying particulate materials
EP0047636A2 (en) * 1980-09-08 1982-03-17 Chemetron Process Equipment, Inc. Rotary dryer
DE3534260A1 (en) * 1985-09-26 1987-04-02 Plonka Dohren Marianne Method for thermal drying of temperature-sensitive materials in rotary drums as well as devices for implementing this method
WO1989011072A1 (en) * 1988-05-10 1989-11-16 M. Kaindl Holzindustrie Process for low-emission drying of wood chips
DE4017806A1 (en) * 1990-06-01 1991-12-05 Koerting Ag METHOD AND SYSTEM FOR THE CONTINUOUS DRYING OF WOODCHIPS, WOOD FIBERS OR OTHER SHEET GOODS
DE4427709A1 (en) * 1994-06-08 1996-01-11 Martin Knabe Drying of solid particles, esp. wood for chipboard mfr.
EP0714006A1 (en) * 1994-11-24 1996-05-29 W. Kunz AG Process for drying a substance, in particular wood chips

Also Published As

Publication number Publication date
EP0851194A2 (en) 1998-07-01
DE19654043C2 (en) 1998-05-28
DE19654043A1 (en) 1997-07-03
US5950322A (en) 1999-09-14
CA2225569A1 (en) 1998-06-23

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