SE9404453D0 - Stabilization of ash - Google Patents

Stabilization of ash

Info

Publication number
SE9404453D0
SE9404453D0 SE9404453A SE9404453A SE9404453D0 SE 9404453 D0 SE9404453 D0 SE 9404453D0 SE 9404453 A SE9404453 A SE 9404453A SE 9404453 A SE9404453 A SE 9404453A SE 9404453 D0 SE9404453 D0 SE 9404453D0
Authority
SE
Sweden
Prior art keywords
ash
station
aqueous solution
sulphide
stabilised
Prior art date
Application number
SE9404453A
Other languages
Swedish (sv)
Other versions
SE9404453L (en
SE510942C2 (en
Inventor
Sven Ragnarsson
Original Assignee
Flaekt Ab
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 Flaekt Ab filed Critical Flaekt Ab
Priority to SE9404453A priority Critical patent/SE510942C2/en
Publication of SE9404453D0 publication Critical patent/SE9404453D0/en
Priority to AU43196/96A priority patent/AU4319696A/en
Priority to PCT/SE1995/001367 priority patent/WO1996019304A1/en
Priority to JP8519708A priority patent/JPH10510759A/en
Publication of SE9404453L publication Critical patent/SE9404453L/en
Priority to AU36885/97A priority patent/AU694701B2/en
Publication of SE510942C2 publication Critical patent/SE510942C2/en

Links

Classifications

    • 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
    • A62D2203/00—Aspects of processes for making harmful chemical substances harmless, or less harmful, by effecting chemical change in the substances
    • A62D2203/10—Apparatus specially adapted for treating harmful chemical agents; Details thereof

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)
  • Extraction Or Liquid Replacement (AREA)

Abstract

A method and a device for the stabilisation of ash, preferably fly ash, are disclosed. In the method, the ash is first extracted with an acid aqueous solution, whereupon it is preferably washed with an aqueous solution before being alkalised with an aqueous solution of a water-soluble alkali, such as soda, and treated with an aqueous solution of a water-soluble sulphide, such as sodium sulphide, in order to convert leachable material in the ash to insoluble sulphide. The thus-stabilised ash is then washed, preferably with water. After each treatment stage, the ash is preferably separated from the liquid. The device consists of a band filter (15) having an inlet end for ash that is to be stabilised, as well as an outlet end for ash that has been stabilised. As seen from the inlet end to the outlet end, the band filter comprises a station (25) for acid extraction of the ash, a washing station (30), a station (36) for alkalisation of the ash, a station (42) for sulphide-treatment of the ash, and a washing station (48).
SE9404453A 1992-05-30 1994-12-22 Stabilization of ash SE510942C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9404453A SE510942C2 (en) 1994-12-22 1994-12-22 Stabilization of ash
AU43196/96A AU4319696A (en) 1994-12-22 1995-11-17 Stabilisation of ashes
PCT/SE1995/001367 WO1996019304A1 (en) 1994-12-22 1995-11-17 Stabilisation of ashes
JP8519708A JPH10510759A (en) 1994-12-22 1995-11-17 Ash stabilization
AU36885/97A AU694701B2 (en) 1992-05-30 1997-09-05 Peptides with organo-protective activity, their preparation and use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9404453A SE510942C2 (en) 1994-12-22 1994-12-22 Stabilization of ash

Publications (3)

Publication Number Publication Date
SE9404453D0 true SE9404453D0 (en) 1994-12-22
SE9404453L SE9404453L (en) 1996-06-23
SE510942C2 SE510942C2 (en) 1999-07-12

Family

ID=20396420

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9404453A SE510942C2 (en) 1992-05-30 1994-12-22 Stabilization of ash

Country Status (4)

Country Link
JP (1) JPH10510759A (en)
AU (1) AU4319696A (en)
SE (1) SE510942C2 (en)
WO (1) WO1996019304A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3975456B2 (en) * 1998-06-17 2007-09-12 月島機械株式会社 Heavy metal component recovery method
AU732646B3 (en) * 1999-02-17 2001-04-26 Solucorp Industries Ltd. Treatment process for contaminated waste
FI20041132A (en) * 2004-08-31 2006-03-01 Outokumpu Oy Procedure for the treatment of iron precipitation
GB0513510D0 (en) * 2005-07-01 2005-08-10 Future Ind Sus Ltd Process for the treatment of fly ash and APC residues
JP5917306B2 (en) * 2012-06-11 2016-05-11 メタウォーター株式会社 Method and apparatus for treating sludge incineration ash
US11479472B2 (en) 2019-01-24 2022-10-25 Elixsys, Inc. Systems and methods to recover value-added materials from gypsum
AU2020210980A1 (en) * 2019-01-24 2021-08-05 Davy Powersports Inc. Systems and methods to treat flue gas desulfurization and metal-bearing waste streams to recover value-added materials

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3918292C2 (en) * 1988-10-04 1993-11-25 Steinmueller Gmbh L & C Process for the treatment of fly ash containing heavy metals from the flue gas of incineration plants, in particular waste or waste incineration plants

Also Published As

Publication number Publication date
AU4319696A (en) 1996-07-10
SE9404453L (en) 1996-06-23
SE510942C2 (en) 1999-07-12
JPH10510759A (en) 1998-10-20
WO1996019304A1 (en) 1996-06-27

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