EP0722777A1 - Procédé de traitement de scories provenant d'installations d'incinération de déchets - Google Patents

Procédé de traitement de scories provenant d'installations d'incinération de déchets Download PDF

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Publication number
EP0722777A1
EP0722777A1 EP95810783A EP95810783A EP0722777A1 EP 0722777 A1 EP0722777 A1 EP 0722777A1 EP 95810783 A EP95810783 A EP 95810783A EP 95810783 A EP95810783 A EP 95810783A EP 0722777 A1 EP0722777 A1 EP 0722777A1
Authority
EP
European Patent Office
Prior art keywords
stage
sieve
sieving stage
sieving
slag
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
EP95810783A
Other languages
German (de)
English (en)
Other versions
EP0722777B1 (fr
Inventor
Markus Bürgin
Bruno Carcer
Alfred Edlinger
Jean-Marc Martelli
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.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
ABB Management 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
Priority claimed from DE19501830A external-priority patent/DE19501830A1/de
Priority claimed from DE1995108293 external-priority patent/DE19508293A1/de
Application filed by ABB Management AG filed Critical ABB Management AG
Publication of EP0722777A1 publication Critical patent/EP0722777A1/fr
Application granted granted Critical
Publication of EP0722777B1 publication Critical patent/EP0722777B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags

Definitions

  • the invention relates to a method for treating slag from waste incineration plants, in which the raw slag is separated into at least two fractions after passing through the furnace grate directly and without prior quenching in a water bath, and these two fractions are further treated separately, the coarse fraction being a wet slag remover is fed.
  • Such a processing method is known for example from EP-0 437 679 B1.
  • the slag is quenched in a wet deslagger immediately after it leaves the furnace. Without additional Washing the slag does not result in a reduction in the heavy metal content in the slag, and considerable amounts of toxins remain in the slag.
  • EP-0 437 679 discloses a method for treating residues from a waste incineration plant, in which the raw slag is separated into two fractions after passing through the furnace grate.
  • the rust slag, boiler ash and the grate diarrhea are separated into two fractions.
  • the fraction with constituents whose diameter is less than 100 to 300 mm is melted in a separate melting furnace, the larger constituents of the grate and boiler ash are introduced into a wet slag remover.
  • EP patent 0 372 039 now shows for the first time a way of treating slag from waste and incineration furnaces, the slag being fed to the rough cleaning (removal of unburned coarse material and magnetic parts) in a water bath directly after the furnace without prior quenching .
  • the roughly cleaned slag is then separated into at least two fractions and all particles that are smaller than 2 mm are assigned to one fraction.
  • the invention is based on the object of specifying a method of the type mentioned at the outset which enables simple removal of the fine fraction, air exclusion from the combustion chamber and cooling of the second fraction can be achieved with simple means.
  • Waste is burned in an incinerator 1.
  • the resulting flue gases and entrained particles (fly ash as boiler ash and filter ash) are processed in a known manner in a separating and filtering stage 2, as described and shown, for example, in EP-0 437 679 B1.
  • the grate ash passes directly from the furnace grate into a first sieving stage 3. This is preferably designed as a sieve conveyor grate.
  • Such devices are known and, in addition to other areas of application, are also used in waste incineration plants for screening out the fine fraction (cf. "Jost Sieb balanceroste" brochure from Jost AG Maschinenfabrik, CH-3627 Heimberg, FOT 1.92 - 3000, undated).
  • the raw slag is separated into a fine fraction with particle diameters smaller than 25 ... 35 mm and a corresponding coarse fraction.
  • the coarse fraction arrives as a sieve overflow in a wet deslagger 4 of a known type. This also ensures that there is no air on the coarse fraction side from the inside of the furnace.
  • the fine fraction smaller than 25 ... 35 mm is fed to a second sieve stage, e.g. a strainer sieve or preferably a vibrating sieve, also of a known type.
  • a second sieve stage e.g. a strainer sieve or preferably a vibrating sieve, also of a known type.
  • the grate diarrhea from the incinerator 1 can also be fed to the second sieve stage 5, which is symbolized in the figure by a dashed line.
  • the sieve diarrhea of the second sieving stage 5 with particles of 0 ... 2 mm is specially treated, e.g. melted in a melting furnace 7.
  • the sieve overflow of the second sieving stage 5 is mechanically comminuted in a grinding stage 6, e.g. in a ball mill.
  • the ground material is then in a third (optional) sieving stage 8, e.g.
  • a rod sieve again separated into two fractions, namely a fine fraction with particle size 0 ... 2 mm and a coarse fraction larger than 2 mm.
  • the fine fraction - it contains 5 less pollutants than the fine fraction 0 ... 2 mm of the second sieving stage - is also fed to the melting furnace 7, the coarse fraction - it essentially consists only of inert substances - can be deposited.
  • a sorting stage 9 can be interposed between the grinding stage 6 and the third sieving stage 8 in order to separate out metal parts, preferably separately according to ferrous and non-ferrous metals, and other inert substances.
  • the still very hot sieve diarrhea from the first sieve stage 3 to the second sieve stage 5 is normally transported by conveying devices known per se.
  • a further development of the invention preferably provides for a discharge element, preferably a screw conveyor 10, which combines cooling and air sealing functions.
  • This screw conveyor 10 also serves as an air sealing element on the fine fraction side of the first sieve stage 3 with respect to the incinerator 1 and also acts as a cooling device for the ash cooling, because with a screw conveyor, the material to be conveyed is spread over a large area with the screw conveyors Comes into contact and the latter can simply be cooled. If the screw conveyor 10 proves to be insufficiently efficient in its function as an air sealing element, this can be followed by a double pendulum flap 11, also referred to in the literature as a double-leaf shut-off flap.
  • Burnt-out slag 12 (coarse / fine) falls at the end of the grate 13 into a slag shaft 14, the walls of which are drawn down so far that they dip into the wet slag remover 4.
  • a deflection flap 15 is pivotably arranged in the side wall of the slag shaft. As a rule, this deflection flap 15 is pivoted out of its vertical position and closes the direct access to the wet slag remover 4.
  • Burnt-out slag is then fed directly to the first sieving stage 3, which is preferably designed as a sieve conveyor grate.
  • the screen overflow of the first screen stage 3 goes directly into the wet deslagger 4 below the screen stage 3.
  • the arrangement is such that the screen overflow falls into a shaft 16, the walls 17, 18 of which are drawn down so far that they are below the water level 19 ends. In this way, the air seal with respect to the slag shaft 14 and thus the interior of the furnace is achieved.
  • the sieve diarrhea is collected in one or more funnels 20, 21 under the first sieving stage 3 and carried out separately and dryly via suitable discharge devices 10, for example screw conveyors or trough chain conveyors, and is further processed as described in connection with FIG. 1.
  • suitable discharge devices 10 for example screw conveyors or trough chain conveyors
  • the deflection flap 15 can be set vertically (shown in broken lines in FIG. 3), so that the entire slag can be discharged conventionally (wet).

Landscapes

  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Fertilizers (AREA)
EP95810783A 1995-01-21 1995-12-11 Procédé de traitement de scories provenant d'installations d'incinération de déchets Expired - Lifetime EP0722777B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19501830A DE19501830A1 (de) 1995-01-21 1995-01-21 Verfahren zum Aufbereiten von Schlacke aus Müllverbrennungsanlagen
DE19501830 1995-01-21
DE19508293 1995-03-09
DE1995108293 DE19508293A1 (de) 1995-03-09 1995-03-09 Verfahren zum Aufbereiten von Schlacke aus Müllverbrennungsanlagen

Publications (2)

Publication Number Publication Date
EP0722777A1 true EP0722777A1 (fr) 1996-07-24
EP0722777B1 EP0722777B1 (fr) 2000-05-31

Family

ID=26011768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95810783A Expired - Lifetime EP0722777B1 (fr) 1995-01-21 1995-12-11 Procédé de traitement de scories provenant d'installations d'incinération de déchets

Country Status (11)

Country Link
US (1) US5671688A (fr)
EP (1) EP0722777B1 (fr)
JP (1) JP4149529B2 (fr)
KR (1) KR100404642B1 (fr)
AT (1) ATE193466T1 (fr)
DE (1) DE59508422D1 (fr)
DK (1) DK0722777T3 (fr)
ES (1) ES2148466T3 (fr)
NO (1) NO309365B1 (fr)
PT (1) PT722777E (fr)
TW (1) TW277101B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908673A1 (fr) 1997-10-13 1999-04-14 Asea Brown Boveri AG Procédé de traitement de scories provenants du traitement thermique de déchets
WO2015007314A1 (fr) 2013-07-17 2015-01-22 Georg Schons Procédé permettant de traiter une scorie dans des installations d'incinération de déchets et installation d'incinération de déchets
DE102014115854A1 (de) 2014-10-30 2016-05-04 Georg Schons Verfahren zur Handhabung von Schlacke und Rostdurchfall einer Müllverbrennungsanlage sowie Müllverbrennungsanlage

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908674A1 (fr) * 1997-10-13 1999-04-14 Asea Brown Boveri AG Procédé pour la combustion de déchets dans un incinérateur et pour le traitement des scories provenants de l'incinération
DE10213790B4 (de) * 2002-03-27 2006-05-24 Martin GmbH für Umwelt- und Energietechnik Verfahren zur Abfallverbrennung in einer Abfallverbrennungsanlage
DE10213789B4 (de) * 2002-03-27 2006-04-20 Martin GmbH für Umwelt- und Energietechnik Verfahren zur Behandlung von Verbrennungsrückständen einer Verbrennungsanlage
DE10213788B4 (de) * 2002-03-27 2007-04-26 Martin GmbH für Umwelt- und Energietechnik Verfahren zur Beeinflussung der Eigenschaften von Verbrennungsrückständen aus einer Verbrennungsanlage
DE10306132A1 (de) * 2003-02-14 2004-08-26 Gerhard Scherer Aufbereitung von Schlacke aus Kehrichtverbrennungsanlagen
RU2359930C2 (ru) * 2007-07-04 2009-06-27 Техком Гмбх Способ обработки шлака после его выхода из металлургической емкости и устройство для его осуществления
CA2886896C (fr) 2012-10-12 2020-03-10 Blue Sky Mines Ltd. Procedes et systemes permettant de traiter des dechets incineres
US10180254B2 (en) * 2014-09-16 2019-01-15 Hitachi Zosen Inova Ag Method and device for processing slag occurring in a combustion chamber of a refuse incineration plant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012609A1 (fr) * 1988-06-16 1989-12-28 Leo Schwyter Ag Procede et dispositif de traitement de scories de fours d'incineration de dechets
EP0437679A1 (fr) * 1989-11-29 1991-07-24 Deutsche Babcock Anlagen Gmbh ProcÀ©dé pour le traitement des résidus d'incinérateurs des déchets et incinérateurs pour la mise en oeuvre du procédé
EP0515792A2 (fr) * 1991-05-28 1992-12-02 Deutsche Babcock Anlagen Gmbh Procédé pour le traitement des résidus d'une installation d'incinération de déchets, et installation d'incinération de déchets pour la mise en oeuvre dudit procédé

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011912A1 (fr) * 1988-05-31 1989-12-14 Leo Schwyter Ag Procede et installation pour l'epuration des scories d'un four d'incineration de dechets
US5356082A (en) * 1991-06-21 1994-10-18 Resource Recycling, Inc. Incinerated waste material treatment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012609A1 (fr) * 1988-06-16 1989-12-28 Leo Schwyter Ag Procede et dispositif de traitement de scories de fours d'incineration de dechets
EP0372039A1 (fr) * 1988-06-16 1990-06-13 Schwyter Leo Ag Procede et dispositif de traitement de scories de fours d'incineration de dechets.
EP0437679A1 (fr) * 1989-11-29 1991-07-24 Deutsche Babcock Anlagen Gmbh ProcÀ©dé pour le traitement des résidus d'incinérateurs des déchets et incinérateurs pour la mise en oeuvre du procédé
EP0515792A2 (fr) * 1991-05-28 1992-12-02 Deutsche Babcock Anlagen Gmbh Procédé pour le traitement des résidus d'une installation d'incinération de déchets, et installation d'incinération de déchets pour la mise en oeuvre dudit procédé

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0908673A1 (fr) 1997-10-13 1999-04-14 Asea Brown Boveri AG Procédé de traitement de scories provenants du traitement thermique de déchets
US6036484A (en) * 1997-10-13 2000-03-14 Asea Brown Boveri Ag Process for reprocessing slag and/or ash from the thermal treatment of refuse
WO2015007314A1 (fr) 2013-07-17 2015-01-22 Georg Schons Procédé permettant de traiter une scorie dans des installations d'incinération de déchets et installation d'incinération de déchets
DE102014115854A1 (de) 2014-10-30 2016-05-04 Georg Schons Verfahren zur Handhabung von Schlacke und Rostdurchfall einer Müllverbrennungsanlage sowie Müllverbrennungsanlage

Also Published As

Publication number Publication date
JPH08229430A (ja) 1996-09-10
PT722777E (pt) 2000-11-30
KR960028976A (ko) 1996-08-17
NO960233D0 (no) 1996-01-19
EP0722777B1 (fr) 2000-05-31
DE59508422D1 (de) 2000-07-06
KR100404642B1 (ko) 2004-01-28
NO309365B1 (no) 2001-01-22
ATE193466T1 (de) 2000-06-15
ES2148466T3 (es) 2000-10-16
DK0722777T3 (da) 2000-10-09
US5671688A (en) 1997-09-30
NO960233L (no) 1996-07-22
JP4149529B2 (ja) 2008-09-10
TW277101B (en) 1996-06-01

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