EP1384948A1 - Procédé et dispositif de traitement de déchets, en particulier de déchets humides dans un four de combustion - Google Patents

Procédé et dispositif de traitement de déchets, en particulier de déchets humides dans un four de combustion Download PDF

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Publication number
EP1384948A1
EP1384948A1 EP02016462A EP02016462A EP1384948A1 EP 1384948 A1 EP1384948 A1 EP 1384948A1 EP 02016462 A EP02016462 A EP 02016462A EP 02016462 A EP02016462 A EP 02016462A EP 1384948 A1 EP1384948 A1 EP 1384948A1
Authority
EP
European Patent Office
Prior art keywords
waste
screw
furnace
screw conveyor
phase
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
EP02016462A
Other languages
German (de)
English (en)
Other versions
EP1384948B1 (fr
Inventor
Heinz Albert Steimen
Björn Fossen
Brenden Vidar
Reidar Brattebrekke
Trond Kaasa
Joachim Dr. Dr. Otschik
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.)
Norsk Inova AS
Original Assignee
Norsk Inova AS
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 Norsk Inova AS filed Critical Norsk Inova AS
Priority to DE50206905T priority Critical patent/DE50206905D1/de
Priority to EP20020016462 priority patent/EP1384948B1/fr
Priority to DE2002145954 priority patent/DE10245954B4/de
Priority to NO20033320A priority patent/NO323866B1/no
Publication of EP1384948A1 publication Critical patent/EP1384948A1/fr
Application granted granted Critical
Publication of EP1384948B1 publication Critical patent/EP1384948B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/10—Drying by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/12—Waste feed arrangements using conveyors
    • F23G2205/121—Screw conveyor

Definitions

  • the invention relates to a method for waste processing, in particular of wet waste in a combustion furnace according to the preamble of the claim 1.
  • Another aspect of the invention relates to one for carrying out the method suitable device according to the preamble of claim 9.
  • the invention is particularly concerned with the problem of combustion wet waste, which is understood as a waste that has a water content of over 75 mass%.
  • wastes are, for example, food or biosludge.
  • the invention deals with the problem of the efficiency of drying and increase combustion of wet waste. She is not up, though limited the processing of wet waste.
  • the prior art already includes a device for waste processing, at successively a charging device, a degassing and a High-temperature reactor are arranged, wherein in the degassing at least a transport screw is arranged (DE 43 30 788 A1). Especially the degassing duct is surrounded by a jacket heating, which with steam or gas can be operated.
  • the transport screw makes garbage continuous transported from the feeder to the high temperature reactor, wherein the waste is heated to a temperature of about 600 ° C and is degassed. A resulting solid residue and the gas will be fed to the high temperature reactor, in the synthesis gas and a melt arise, which are treated externally.
  • the screw conveyor may be hollow be charged for heating with steam or gas.
  • the outlet of the degassing channel i. the end of Garbage transport route, which is realized essentially by the screw conveyor is in contact with the interior of the high-temperature reactor whose Heat is thus practically not transported in the degassing. this applies especially if the screw conveyor before the end of the degassing ends and at the end of a graft from the transported goods is formed.
  • the heat supply to the material in the degassing via the this surrounding coat is relatively inefficient. A direct heating of the garbage in the degassing can only occur if this sufficient is dry to allow partial combustion. Garbage with one Moisture content above 30% can not be processed in this way.
  • the in the second zone gases and the pyrolysis of the first zone subsequently subjected to secondary combustion. This should be the first Zone are heated by radiant heat, directly from the secondary combustion is won.
  • waste is sent via a plug screw transported in a trained as Schweltrommel pyrolysis reactor, wherein the carbonization drum by means of passing through these heating pipes indirectly is heated and thus the cooler heating gas also for heating a Transport channel is used, in which the stuffing screw is arranged (DE 43 27 633 A1). It is therefore an indirect heating, in particular in the area of the transport channel is similarly weak and inefficient as in the Initially discussed prior art. Processing wet waste with a moisture content above 75% is also not effective to perform.
  • the heated dried material becomes then in a vaporization chamber with exclusion of air in solid and fluid components of the waste are separated.
  • the present invention is based on the object, a method for waste disposal to develop, with the waste in particular high humidity dried uncomplicated, safe and efficient and required for pyrolysis Temperature of the waste is heated.
  • the first phase of sealing by compression of the waste closes
  • the waste is dried efficiently and nonetheless safe and without risk of explosion, with progressive warming by direct Contact with the furnace atmosphere of the incinerator.
  • the dried one Waste is continued through the furnace atmosphere continuously to one of Pyrolysis required temperature heated in a third phase.
  • the trash is moved over the transport path at such a speed that in the third phase with slow pyrolysis of the waste substantially Gas is generated.
  • the total residence time of the waste over the transport route can typically be 15 to 20 minutes.
  • a fourth phase the burnout of the pyrolyzed waste is completed, and at the latest following the transport screw in a free Area of the furnace interior, in which the pyrolysed waste from the frontal End of the transport screw falls. It will be a complete combustion with achieved little air or oxygen.
  • waste moisture by this method to process.
  • Under low-moisture waste becomes one with a Water content of up to 15 percent by mass understood. This may be a Changing one or less process parameters required, for example a variation of the transport speed of the waste to be processed along the transport route.
  • the inventive method is thus characterized by great universality out.
  • Waste according to claim 3 Due to the direct contact with the furnace atmosphere, first at the transport screw and then in the free area of the furnace interior is the Waste according to claim 3 exposed to a temperature above 850 to 1200 ° C, which is certainly sufficient for complete pyrolysis depending on the type of waste.
  • a device for carrying out the method according to the invention according to claim 9, which is open at its end-side section at the top, i. exposed Transport screw, which is thermally unshielded in direct contact with the furnace atmosphere is an essential element.
  • exposed Transport screw which is thermally unshielded in direct contact with the furnace atmosphere is an essential element.
  • the end portion extending into an interior of the incinerator only at the bottom in a shell-shaped shell of refractory Material taken.
  • the screw conveyor needs only at her to said end-side Section opposite end to be stored on one side.
  • Temperature sensor can approximate the temperature of the with the Transport screw transported waste are detected.
  • the signal from the Temperature sensor can be in a furnace temperature-dependent speed control a drive of the screw conveyor according to claim 12 further processed.
  • the processing for example, in terms of moisture, density or thermal conductivity different types of waste, optimized.
  • the temperature of the screw conveyor the is heated by the furnace atmosphere through the formation of a cooling water passage in the screw conveyor in conjunction with a flow-controlled Cooling water source can be optimized. It has a temperature outside on wings of the screw higher than 250 ° C proved to be expedient.
  • the multiple function which is open at the top along an end portion, i. exposed Transport screw along this end portion of the efficient Drying of the waste and the subsequent pyrolysis serves and the moreover in a direction preceding in the transport direction of the waste over the circumference completely closed section acts as a plug screw.
  • the inventive device with which the inventive method is carried out generally comprises a screw conveyor 1 in conjunction with a combustion furnace 2.
  • the screw conveyor has a variable-speed drive 3 on, with a substantially horizontal transport screw 4 geared is coupled.
  • a charging device 6 is arranged, which with waste, in particular Food waste or biosludge fed batchwise or continuously can be.
  • the feeder with a slide 7 or instead by blocking air supply with a Air supply pipe 6a lockable to the environment.
  • the area of the furnace interior that is not affected by the screw conveyor 4 and the Ofenausmautation 9 is taken in the present application as designated free area 11 of the incinerator. About him can be an alternative Loading lock 15 be placed on the incinerator, which is only indicated in the drawing. Continue to end in the interior Nozzles 12, which use air / oxygen for combustion and heat generation in be fed to the furnace interior.
  • the incinerator is closed down in the usual way by an ash bed 14.
  • the output signal is a measure of the Temperature of in the adjacent area with the screw conveyor transported waste is and further processed for speed control of the drive 3 becomes.
  • the charging device 6 wet waste, which has a water content of over 75 percent by mass can have.
  • the under the feeder of the screw conveyor Detected waste is in a first phase A in the enclosed Section 4a of the screw conveyor compressed, whereby a reflux of Heat is largely sealed off from the inside of the oven.
  • the lock can by the slider or the feed device supplied sealing air be largely secured even when empty screw conveyor.
  • phase B in which the waste during its further Transport along the screw conveyor, in particular from the enclosed Section 4a of the screw conveyor in the end, open-topped section the transport screw enters, there is a drying of the wet waste in phase B, with the waste on the open top of the screw conveyor the furnace atmosphere is exposed directly and from the furnace interior can absorb heat radiation directly.
  • the furnace atmosphere is exposed directly and from the furnace interior can absorb heat radiation directly.
  • the inside of the oven typically has a temperature above 850 to 1200 ° C, the waste is already exposed in phase B for drying.
  • the continuously transported in the longitudinal side at the top open section and waste exposed to the hot furnace atmosphere is pyrolyzed in the third phase C, wherein substantially pyrolysis gas is formed.
  • Solid pyrolyzed waste falls from the front end of the screw conveyor 4 in the open area 11 of the incinerator 2, in which in a fourth phase D a burnout the waste is completed.
  • Residual ash is in the ash bed. 4 collected and can be discharged from there conventionally.
  • the transport screw is expedient to an external wing temperature at the wings over 250 ° C. thereby cooled, that cooling water of a regulated flow a cavity flows through in the area of the worm shaft.
  • the cooling is to receive the clarity of the drawing not shown.
  • the residence time of the wet waste on the screw conveyor is typical 15 to 20 minutes, ie the internal screw drying and pyrolysis of waste.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
EP20020016462 2002-07-23 2002-07-23 Procédé et dispositif de traitement de déchets, en particulier de déchets humides dans un four de combustion Expired - Lifetime EP1384948B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50206905T DE50206905D1 (de) 2002-07-23 2002-07-23 Verfahren und Einrichtung zur Abfallverarbeitung, insbesondere von feuchtem Abfall in einem Verbrennungsofen
EP20020016462 EP1384948B1 (fr) 2002-07-23 2002-07-23 Procédé et dispositif de traitement de déchets, en particulier de déchets humides dans un four de combustion
DE2002145954 DE10245954B4 (de) 2002-07-23 2002-10-02 Verfahren und Einrichtung zur Abfallverarbeitung
NO20033320A NO323866B1 (no) 2002-07-23 2003-07-23 Fremgangsmåte og anordning for avfallsbehandling, spesielt fuktig avfall, i en forbrenningsovn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020016462 EP1384948B1 (fr) 2002-07-23 2002-07-23 Procédé et dispositif de traitement de déchets, en particulier de déchets humides dans un four de combustion

Publications (2)

Publication Number Publication Date
EP1384948A1 true EP1384948A1 (fr) 2004-01-28
EP1384948B1 EP1384948B1 (fr) 2006-05-24

Family

ID=27798844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020016462 Expired - Lifetime EP1384948B1 (fr) 2002-07-23 2002-07-23 Procédé et dispositif de traitement de déchets, en particulier de déchets humides dans un four de combustion

Country Status (3)

Country Link
EP (1) EP1384948B1 (fr)
DE (2) DE50206905D1 (fr)
NO (1) NO323866B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015128547A1 (fr) 2014-02-28 2015-09-03 Evac Oy Installation de traitement de déchets
CN112361367A (zh) * 2020-12-10 2021-02-12 湖北金炉节能股份有限公司 一种高温流化炉
CN121539804A (zh) * 2026-01-22 2026-02-17 意诚智造(苏州)科技有限公司 一步法热解焚烧处理方法及装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20146081A7 (fi) 2014-12-10 2016-06-11 Evac Oy Aluksen jätteenkäsittelylaitos ja menetelmä pakokaasun jäähdyttämiseksi aluksen jätteenkäsittelylaitoksessa

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027854A (en) * 1957-11-14 1962-04-03 Fred E Akerlund Apparatus and process for thermal destruction of waste materials
US4217175A (en) * 1978-04-28 1980-08-12 Reilly Bertram B Apparatus for solid waste pyrolysis
JPS60152810A (ja) * 1984-01-23 1985-08-12 Ishikawajima Harima Heavy Ind Co Ltd 下水汚泥の被焼却物を焼却するための流動床炉
EP0474890B1 (fr) 1990-09-01 1994-02-16 Max Dipl.-Ing. Aicher Procédé et dispositif pour le traitement de boues d'épuration
DE4330788A1 (de) 1993-09-10 1994-04-07 Siemens Ag Einrichtung zur Müllverarbeitung
DE4327633A1 (de) 1993-08-17 1995-02-23 Siemens Ag Transporteinrichtung für Abfall
WO1997015641A1 (fr) 1995-10-26 1997-05-01 Compact Power Limited Production d'energie thermique a partir de combustibles carbones solides
WO2000013811A1 (fr) 1998-09-07 2000-03-16 Antonio Salviati Appareil et procede de traitement thermique de dechets
EP1113223A1 (fr) * 1999-12-27 2001-07-04 Vogt, Myrtha Appareil de combustion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531462A (en) * 1980-01-18 1985-07-30 University Of Kentucky Research Foundation Biomass gasifier combustor
DE4327953A1 (de) * 1993-08-19 1995-02-23 Siemens Ag Anlage zur thermischen Abfallentsorgung sowie Verfahren zum Betrieb einer solchen Anlage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027854A (en) * 1957-11-14 1962-04-03 Fred E Akerlund Apparatus and process for thermal destruction of waste materials
US4217175A (en) * 1978-04-28 1980-08-12 Reilly Bertram B Apparatus for solid waste pyrolysis
JPS60152810A (ja) * 1984-01-23 1985-08-12 Ishikawajima Harima Heavy Ind Co Ltd 下水汚泥の被焼却物を焼却するための流動床炉
EP0474890B1 (fr) 1990-09-01 1994-02-16 Max Dipl.-Ing. Aicher Procédé et dispositif pour le traitement de boues d'épuration
DE4327633A1 (de) 1993-08-17 1995-02-23 Siemens Ag Transporteinrichtung für Abfall
DE4330788A1 (de) 1993-09-10 1994-04-07 Siemens Ag Einrichtung zur Müllverarbeitung
WO1997015641A1 (fr) 1995-10-26 1997-05-01 Compact Power Limited Production d'energie thermique a partir de combustibles carbones solides
WO2000013811A1 (fr) 1998-09-07 2000-03-16 Antonio Salviati Appareil et procede de traitement thermique de dechets
EP1113223A1 (fr) * 1999-12-27 2001-07-04 Vogt, Myrtha Appareil de combustion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 319 (M - 439) 14 December 1985 (1985-12-14) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015128547A1 (fr) 2014-02-28 2015-09-03 Evac Oy Installation de traitement de déchets
CN112361367A (zh) * 2020-12-10 2021-02-12 湖北金炉节能股份有限公司 一种高温流化炉
CN121539804A (zh) * 2026-01-22 2026-02-17 意诚智造(苏州)科技有限公司 一步法热解焚烧处理方法及装置

Also Published As

Publication number Publication date
DE50206905D1 (de) 2006-06-29
NO323866B1 (no) 2007-07-16
DE10245954B4 (de) 2004-07-22
DE10245954A1 (de) 2004-02-19
EP1384948B1 (fr) 2006-05-24
NO20033320D0 (no) 2003-07-23

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