EP0635282A1 - Procédé pour le traitement de matière résiduelle des incinérateurs - Google Patents

Procédé pour le traitement de matière résiduelle des incinérateurs Download PDF

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Publication number
EP0635282A1
EP0635282A1 EP94108750A EP94108750A EP0635282A1 EP 0635282 A1 EP0635282 A1 EP 0635282A1 EP 94108750 A EP94108750 A EP 94108750A EP 94108750 A EP94108750 A EP 94108750A EP 0635282 A1 EP0635282 A1 EP 0635282A1
Authority
EP
European Patent Office
Prior art keywords
slag
flue gas
washing
heavy metal
water
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
EP94108750A
Other languages
German (de)
English (en)
Other versions
EP0635282B1 (fr
Inventor
Jürgen Dr. Balg
Adrian Dr. Selinger
Franz-Georg Dr. Simon
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.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
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
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Application filed by ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0635282A1 publication Critical patent/EP0635282A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/36—Detoxification by using acid or alkaline reagents
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/08—Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2203/00—Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
    • A62D2203/02—Combined processes involving two or more distinct steps covered by groups A62D3/10 - A62D3/40

Definitions

  • the invention relates to a method for treating residues in waste incineration plants, in which, in addition to slag, hydrogen chloride is also obtained from the flue gas scrubbing.
  • Filter dust is classified as hazardous waste due to the high content of heavy metals and organic materials.
  • recycling for example in sidewalk construction, is possible by glazing the dust.
  • Gypsum can be produced from sulfur dioxide as a material by skillful process control.
  • the processing of the hydrogen chloride is problematic since extremely complex processes with multi-stage rectification are necessary to produce usable hydrochloric acid of technical quality.
  • the slag is contaminated with heavy metals and is therefore often disposed of in an orderly manner.
  • the invention is based on the object of specifying a method for treating residues in waste incineration plants, which leads to a practically heavy metal-free end product with good hydraulic properties.
  • This object is achieved according to the invention in a process of the type mentioned at the outset by washing the slag with the crude hydrochloric acid from the wet scrubber of the flue gas cleaning system after prior mechanical comminution, and reducing the chloride content in the slag treated in this way by washing with water.
  • the heavy metal chlorides in both wash waters are precipitated by adding a precipitant, preferably soda.
  • the invention is based on the following considerations, which have been confirmed by practical tests:
  • hydrochloric acid is now suitable for such a washing process, since this acid is obtained in any case in the flue gas cleaning of the system.
  • a major advantage of the invention is that in a single process, two critical residues, heavy metal-containing slag and crude are economically available Hydrochloric acid, can be eliminated or converted into reusable material.
  • the end products of this treatment are slag in building material quality and usable table salt.
  • slag from the incinerator 1 of a waste incineration plant is discharged from the furnace 1 by means of ram deslagger 2 through a water bath.
  • the so-called coarse or oversize is separated in a mechanical separation device 3. Coarse or oversize are not or incompletely burned components of the waste with diameters of approximately 250 mm or larger.
  • the iron fraction is then separated in a magnetic separator 4, which can be done, for example, by overband magnets.
  • the grain fraction between about 30 to 250 mm leaving the magnetic separator is mechanically comminuted in a mill 5, for example a hammer mill, to a grain size of 32 mm and less.
  • the grain fraction prepared in this way then passes into a first scrubber, the acid scrubber 6, where it is washed with crude hydrochloric acid.
  • An acid scrubber suitable for this purpose includes, for example, a stainless steel tank with an integrated agitator.
  • the crude hydrochloric acid comes from the wet scrubber 7 of the flue gas cleaning system which is already present in waste incineration plants 8. This washing process predominantly forms soluble compounds which can be separated from the slag by a known solid-liquid separation.
  • the residue obtained in this way has a not inconsiderable residue of chlorides, which is reduced by washing with water in a second washer 9, the water washer.
  • the separation of slag and washing water loaded with chlorides takes place, as in the first washing process, by means of a solid-liquid separation which is known per se.
  • the slag separated in the previous process step can now optionally in a lime stage 10 with lime, e.g. in the form of milk of lime. This measure serves to stabilize the slag. Traces of heavy metal remaining in the slag are immobilized in this way and are no longer leached out.
  • Soda Na2 (CO3)
  • Soda Na2 (CO3)
  • the heavy metal concentration can be reduced very deeply by adding sulfidic reagents, for example trimercaptotriazine (trade name TMT15).
  • Recyclable table salt e.g. NaCl for chlor-alkali electrolysis.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treating Waste Gases (AREA)
EP94108750A 1993-07-23 1994-06-08 Procédé pour le traitement de matière résiduelle des incinérateurs Revoked EP0635282B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4324796A DE4324796A1 (de) 1993-07-23 1993-07-23 Verfahren zur Reststoffbehandlung in Müllverbrennungsanlagen
DE4324796 1993-07-23

Publications (2)

Publication Number Publication Date
EP0635282A1 true EP0635282A1 (fr) 1995-01-25
EP0635282B1 EP0635282B1 (fr) 1997-04-02

Family

ID=6493565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108750A Revoked EP0635282B1 (fr) 1993-07-23 1994-06-08 Procédé pour le traitement de matière résiduelle des incinérateurs

Country Status (2)

Country Link
EP (1) EP0635282B1 (fr)
DE (2) DE4324796A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997047362A1 (fr) * 1996-06-14 1997-12-18 Novacarb Elimination de metaux lourds presents dans les rejets d'incineration de dechets ou de fours verriers
WO2003008045A2 (fr) * 2001-07-16 2003-01-30 Uv & P Umweltmanagement - Verfahrenstechnik Neubacher & Partner Ges.M.B.H. Procédé pour immobiliser des résidus de combustion
SG126759A1 (en) * 2002-03-27 2006-11-29 Mitsubishi Heavy Ind Ltd Method for treatment of the residues of combustionresidues produced by combustion plant
CN102416288A (zh) * 2011-12-06 2012-04-18 中南大学 一种从高温氯化冶金烟气中分离和回收有价金属氯化物与氯化氢的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19747504A1 (de) * 1997-10-28 1999-04-29 Babcock Anlagen Gmbh Verfahren zur Behandlung von Verbrennungsrückständen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812986A1 (de) * 1988-04-19 1989-11-02 Landesgewerbeanstalt Bayern Lg Dekontaminationsverfahren fuer schwermetallverunreinigte boeden, speziell fuer quecksilber
DE4035042A1 (de) * 1990-11-05 1992-05-07 Westfael Elekt Werke Verfahren zum aufbereiten von flugstaeuben
EP0538598A1 (fr) * 1991-10-25 1993-04-28 AUSTRIAN ENERGY & ENVIRONMENT SGP/WAAGNER-BIRO GmbH Procédé de transformation des composés de métaux lourds solubles dans l'eau en composés insolubles ou peu solubles dans l'eau

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3320466C2 (de) * 1983-06-07 1987-04-30 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Verfahren zur Reinigung von Rauchgas
DE3324133C2 (de) * 1983-06-07 1994-06-16 Kernforschungsz Karlsruhe Verfahren zur Reinigung von Rauchgas
DE3702306A1 (de) * 1987-01-27 1988-08-04 Hoelter Heinz Verfahren zur abtrennung von schwermetallen aus den abgasen von feuerungsanlagen
DE3918292C2 (de) * 1988-10-04 1993-11-25 Steinmueller Gmbh L & C Verfahren zur Behandlung von schwermetallhaltiger Flugasche aus dem Rauchgas von Verbrennungsanlagen, insbesondere Müll- bzw. Abfallverbrennungsanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812986A1 (de) * 1988-04-19 1989-11-02 Landesgewerbeanstalt Bayern Lg Dekontaminationsverfahren fuer schwermetallverunreinigte boeden, speziell fuer quecksilber
DE4035042A1 (de) * 1990-11-05 1992-05-07 Westfael Elekt Werke Verfahren zum aufbereiten von flugstaeuben
EP0538598A1 (fr) * 1991-10-25 1993-04-28 AUSTRIAN ENERGY & ENVIRONMENT SGP/WAAGNER-BIRO GmbH Procédé de transformation des composés de métaux lourds solubles dans l'eau en composés insolubles ou peu solubles dans l'eau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"HAZARDOUS WASTE MANAGEMENT", JOURNAL OF THE AIR POLLUTION CONTROL ASSOCIATION, vol. 36, no. 4, April 1986 (1986-04-01), PITTSBURG PENNSYLVANIA USA, pages 403 - 409 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997047362A1 (fr) * 1996-06-14 1997-12-18 Novacarb Elimination de metaux lourds presents dans les rejets d'incineration de dechets ou de fours verriers
FR2749772A1 (fr) * 1996-06-14 1997-12-19 Rhone Poulenc Chimie Elimination de metaux lourds presents dans les rejets d'incineration de dechets ou de fours verriers
WO2003008045A2 (fr) * 2001-07-16 2003-01-30 Uv & P Umweltmanagement - Verfahrenstechnik Neubacher & Partner Ges.M.B.H. Procédé pour immobiliser des résidus de combustion
WO2003008045A3 (fr) * 2001-07-16 2003-04-17 Uv & P Umweltman Verfahrenstec Procédé pour immobiliser des résidus de combustion
SG126759A1 (en) * 2002-03-27 2006-11-29 Mitsubishi Heavy Ind Ltd Method for treatment of the residues of combustionresidues produced by combustion plant
CN102416288A (zh) * 2011-12-06 2012-04-18 中南大学 一种从高温氯化冶金烟气中分离和回收有价金属氯化物与氯化氢的方法
CN102416288B (zh) * 2011-12-06 2015-01-07 中南大学 一种从高温氯化冶金烟气中分离和回收有价金属氯化物与氯化氢的方法

Also Published As

Publication number Publication date
EP0635282B1 (fr) 1997-04-02
DE59402284D1 (de) 1997-05-07
DE4324796A1 (de) 1995-01-26

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