EP0941777A2 - Procédé pour augmenter la résistance au lessivage de déchets d' incinération - Google Patents

Procédé pour augmenter la résistance au lessivage de déchets d' incinération Download PDF

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Publication number
EP0941777A2
EP0941777A2 EP99104512A EP99104512A EP0941777A2 EP 0941777 A2 EP0941777 A2 EP 0941777A2 EP 99104512 A EP99104512 A EP 99104512A EP 99104512 A EP99104512 A EP 99104512A EP 0941777 A2 EP0941777 A2 EP 0941777A2
Authority
EP
European Patent Office
Prior art keywords
combustion
residues
combustion residues
annealed
gas
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Withdrawn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
EP99104512A
Other languages
German (de)
English (en)
Other versions
EP0941777A3 (fr
Inventor
Michael Dr. Beckmann
Kai Dr. Keldenich
Stefan Dr. Vodegel
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.)
BBP Environment GmbH
Original Assignee
Deutsche Babcock Anlagen 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 Deutsche Babcock Anlagen AG filed Critical Deutsche Babcock Anlagen AG
Publication of EP0941777A2 publication Critical patent/EP0941777A2/fr
Publication of EP0941777A3 publication Critical patent/EP0941777A3/fr
Withdrawn legal-status Critical Current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
    • F23G5/006—General arrangement of incineration plant, e.g. flow sheets
    • 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
    • F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/01007—Thermal treatments of ash, e.g. temper or shock-cooling for granulation

Definitions

  • the invention relates to a method for increasing the Leaching resistance of solid combustion residues from the Incineration of waste with the characteristics of the generic term of the Claim 1.
  • Thermal plants for the implementation of waste streams such as for example, waste incineration plants are aimed operated to mineralize the waste stream to be eliminated.
  • the flammable, mostly carbon-containing components the waste is converted into gaseous reaction products while the remainder as a solid combustion residue from the Combustion chamber is removed.
  • the solid combustion residue is sent to a landfill or, if the fixed Combustion residue has certain properties, also in recycling, for example as building material in road construction used.
  • eluate test is a defined amount of depositing or building materials to be used a defined amount of water under defined conditions brought into contact. After this contact, the aqueous Phase and the solid phase separated. The watery, as eluate designated phase is with respect to that in the regulations substances of a quantitative chemical analysis subjected.
  • the solid combustion residues from waste incineration processes are however not a chemically inert mixture of substances and can aging during storage. This aging can for example by changing the mechanical properties of the Material, especially by increasing the shear strength or improved resistance to leaching of certain Make ingredients noticeable.
  • DE-A-4 429 958 a method and a Device for the thermal treatment of rust ash inside one of the combustion zones of a waste incineration plant subsequent burnout zone using a special trained burnout grate known.
  • the grate ash within one of the combustion zone Waste incineration plant directly on the burnout zone a liquid-cooled burnout grate through the ash-inherent energy content heated and sintered and then transported on using a moving grate.
  • the invention is based, which in a Solid waste incinerator Post-treat combustion residues so that the Properties of the combustion residues against one Elutionability can be improved.
  • reducing conditions can already be at relative low temperatures conditioning the solid Reach combustion residues.
  • This conditioning lowers - measured after the eluate test - the concentration of certain Components in the eluate of the aftertreated according to the invention Combustion residues. This in particular will Concentration of the heavy metal compounds in the eluate so far lowered that the legal requirements are met.
  • a waste incineration plant contains a combustion grate 1, which in the case shown by rotating along a arranged inclined plane grate rollers 2 is formed.
  • the garbage is the combustion grate 1 via a hopper 3 and a feed ram 4 supplied.
  • Below the Combustion grate 1 are air boxes 5 through which Grate rollers 2 primary combustion air is supplied from below.
  • Grate rollers 2 primary combustion air is supplied from below.
  • a combustion chamber is located above the combustion grate 1, by a cooled furnace ceiling 8 and a cooled one Firebox rear wall 9 is limited and in a flue gas 10 passes.
  • the flue gas duct 10 leads to a not shown Waste heat boiler.
  • burners 11 are arranged over which further combustion air is blown into the combustion chamber. With With the help of this secondary combustion air, the gases and the entrained solid particles burned, which over the leave the combustion grate 1 moving garbage bed.
  • the inside of the firebox is connected to the Combustion grate 1 to a treatment center.
  • the treatment unit consists of a feed grate 13, under which a separate air box 14 is arranged.
  • This Feed grate 13 takes the fixed, by the combustion of the Incineration residues and supports them in the form of a moving bed to the discharge end of the firebox.
  • the solid combustion residue is annealed at a temperature of 400 to 600 ° C. immediately after the waste is incinerated.
  • a non-oxidizing or reducing atmosphere is maintained within the bed moved over the feed grate 13. If the combustion residue still has a low residual carbon content, a smaller amount of air is fed to the feed grate 13 via the air box 14 compared to the waste incineration. This amount of air is just so large that the residual carbon of the solid combustion residue burns in part.
  • another gas e.g. B. flue gas
  • Non-oxidizing or reducing gas components such as CO, CO 2 , or water vapor can be added to this treatment gas. These gas components promote the reduction of the components in the eluate determined in the eluate test.
  • a chlorine-enriched gas atmosphere acts in the same direction, which is produced by adding chlorine gas or chlorine compounds to the treatment gas.
  • the method described in connection with FIG. 1 for Aftertreatment of the combustion residue is in the Incineration process of garbage integrated and as Conditioning stage connected to combustion grate 1 or in the movement of solids on the combustion grate 1 integrated.
  • a waste burner 15 contains, as in FIG. 1 shown with a combustion grate and a combustion chamber a combustion zone.
  • the garbage furnace 15 is a Feed 16 garbage and 17 air through an air line fed.
  • the garbage furnace 15 is a waste heat boiler 18 and a flue gas cleaning 19 downstream, in which the Incineration of the waste flue gas is cooled and cleaned becomes. From the flue gas cleaning 19, the flue gas is a Flue gas line 20 fed to a chimney.
  • the solid that comes from the incineration of waste Combustion residue is removed from the combustion chamber of the refuse furnace 15 withdrawn and comes out of the combustion chamber after exiting via a line into a deasher containing a water bath 21, for example as one, with a scratch chain provided wet bag or as a plunger bag is trained.
  • the ash removal device 21 simultaneously provides one Sealing that prevents hot and uncleaned Flue gases the garbage furnace 15 on the way of Leave combustion residue.
  • the treatment facility is for example as a rotary tube, as a vibrating trough, as Vibrating trough or designed as a bucket elevator and by one Surround housing.
  • Forms within the treatment unit 12 Combustion residue a moving or as in the case of Bucket elevator a resting bed.
  • the Treatment unit 12 can be heated by a gas or over Burner 22 are heated from the inside.
  • Treatment unit 12 a non-oxidizing or reducing Gas atmosphere set.
  • the gas becomes the treatment center 12 supplied via the burner 22 or via lines.
  • the exhaust gas becomes from the treatment unit 12 via an exhaust pipe 23 dissipated and an exhaust gas purification, for. B. the to Garbage furnace 15 belonging to flue gas cleaning 19 if necessary fed after a pressure increase.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)
EP99104512A 1998-03-13 1999-03-06 Procédé pour augmenter la résistance au lessivage de déchets d' incinération Withdrawn EP0941777A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19810872 1998-03-13
DE19810872A DE19810872A1 (de) 1998-03-13 1998-03-13 Verfahren zur Erhöhung der Auslaugbeständigkeit fester Verbrennungsrückstände

Publications (2)

Publication Number Publication Date
EP0941777A2 true EP0941777A2 (fr) 1999-09-15
EP0941777A3 EP0941777A3 (fr) 2001-12-19

Family

ID=7860735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99104512A Withdrawn EP0941777A3 (fr) 1998-03-13 1999-03-06 Procédé pour augmenter la résistance au lessivage de déchets d' incinération

Country Status (5)

Country Link
EP (1) EP0941777A3 (fr)
JP (1) JPH11319775A (fr)
KR (1) KR19990077734A (fr)
DE (1) DE19810872A1 (fr)
TW (1) TW475979B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007140885A1 (fr) * 2006-06-07 2007-12-13 Forschungszentrum Karlsruhe Gmbh Procédé pour améliorer la qualité des scories de foyers à grille
DE102008054038B3 (de) * 2008-10-30 2010-04-29 Karlsruher Institut für Technologie Verfahren und Vorrichtung zur Reduzierung von Schadstoffemissionen in Verbrennungsanlagen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429958A1 (de) 1994-08-24 1996-02-29 Noell Abfall & Energietech Verfahren und Vorrichtung zur thermischen Behandlung von Rostschlacken

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520651A (en) * 1978-08-02 1980-02-14 Babcock Hitachi Kk Incineration ash treating system
DE4023881A1 (de) * 1990-07-27 1992-01-30 Kali Chemie Ag Herstellung schwermetallhaltiger, auslaugbestaendiger glaeser
DE4119390C2 (de) * 1991-06-12 1995-09-14 Johne Patricia Vertreten Durch Verfahren zum Aufbereiten und auslaugbeständigen Verfestigen von Filterstäuben und Reaktionsprodukten aus der Rauchgasreinigung von Abfall- und Klärschlammverbrennungsanlagen
DE4227654C1 (de) * 1992-08-21 1993-11-18 Arnold Dipl Ing Gassner Müllverbrennungsanlage
DE4402172C2 (de) * 1994-01-26 2000-09-28 Steinmueller Gmbh L & C Verfahren zur Verbrennung von Brennstoff und Anlage zur Durchführung des Verfahrens
DE19522704A1 (de) * 1995-06-22 1997-01-02 Abb Research Ltd Verfahren zum Aufbereiten von Schlacke und/oder Filterstaub aus Müllverbrennungsanlagen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4429958A1 (de) 1994-08-24 1996-02-29 Noell Abfall & Energietech Verfahren und Vorrichtung zur thermischen Behandlung von Rostschlacken

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007140885A1 (fr) * 2006-06-07 2007-12-13 Forschungszentrum Karlsruhe Gmbh Procédé pour améliorer la qualité des scories de foyers à grille
US8210112B2 (en) 2006-06-07 2012-07-03 Forschungszentrum Karlsruhe Gmbh Method for improving the slag quality of grate firing systems
DE102008054038B3 (de) * 2008-10-30 2010-04-29 Karlsruher Institut für Technologie Verfahren und Vorrichtung zur Reduzierung von Schadstoffemissionen in Verbrennungsanlagen
US9134022B2 (en) 2008-10-30 2015-09-15 Karlsruher Institut Fuer Technologie Method and device for reducing hazardous emissions in internal combustion systems

Also Published As

Publication number Publication date
JPH11319775A (ja) 1999-11-24
DE19810872A1 (de) 1999-09-23
EP0941777A3 (fr) 2001-12-19
KR19990077734A (ko) 1999-10-25
TW475979B (en) 2002-02-11

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