EP 1933971 A1 20080625 - A METHOD FOR THE CLEANING OF FLUE GASES AND THE TREATMENT OF ASH FROM THE COMBUSTION OF REFUSE
Title (en)
A METHOD FOR THE CLEANING OF FLUE GASES AND THE TREATMENT OF ASH FROM THE COMBUSTION OF REFUSE
Title (de)
VERFAHREN ZUR REINIGUNG VON RAUCHGASEN UND ZUR BEHANDLUNG VON ASCHE AUS DER VERBRENNUNG VON ABFALL
Title (fr)
PROCÉDÉ DE NETTOYAGE DE GAZ DE CARNEAU ET DE TRAITEMENT DE CENDRE PROVENANT DE LA COMBUSTION DE DÉCHETS
Publication
Application
Priority
- SE 2006050342 W 20060919
- SE 0502099 A 20050921
Abstract (en)
[origin: WO2007035169A1] In a method for the cleaning of flue gases and the treatment of ash from a boiler with a fluidised bed for the combustion of solid household refuse, in which boiler the flue gases pass from the furnace (1) to a cyclone (5), after which active carbon (18) and slaked lime (19) can be added and the flue gases led through a filter (6), for example a fabric filter, bottom ash (11) from the furnace, cyclone ash (15) from the cyclone, and filter ash (16) from the filter, among other residues, leave the boiler during operation. In order to clean the cyclone ash (15) such that it satisfies the requirements for deposition into a normal landfill with a clear margin, the cyclone ash is leached with leaching fluid (26) during the formation of an ash sludge (21), which is fed to a fluid separator (23), for example a pressure filter, where the process fluid (26) is separated from the ash (25) that has been leached. It is preferable that the process fluid is recycled through a part of it being used for the leaching and for the formation of the ash sludge, and through another part (28) of it being injected into the flue gas flow after the cyclone (5) but before the addition, if any, of active carbon (18) and slaked lime (19).
IPC 8 full level
B01D 53/34 (2006.01); B01D 53/73 (2006.01); B09B 3/00 (2022.01); B09B 3/20 (2022.01); F23G 5/00 (2006.01); F23J 15/00 (2006.01); A62D 101/08 (2007.01)
IPC 8 main group level
A62D 3/00 (2006.01)
CPC (source: EP SE US)
B01D 53/34 (2013.01 - SE); B01D 53/38 (2013.01 - EP); B01D 53/501 (2013.01 - EP); B01D 53/73 (2013.01 - SE); B09B 3/00 (2013.01 - EP); B09B 3/20 (2022.01 - EP US); B09B 3/38 (2022.01 - US); B09B 3/70 (2022.01 - SE); F23G 5/00 (2013.01 - SE); F23J 15/00 (2013.01 - SE); F23J 15/022 (2013.01 - EP); B09B 2101/30 (2022.01 - SE); F23J 2700/001 (2013.01 - EP); Y02W 30/20 (2015.05 - EP)
Citation (search report)
See references of WO 2007035169A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007035169 A1 20070329; EP 1933971 A1 20080625; SE 0502099 L 20070322; SE 529103 C2 20070502
DOCDB simple family (application)
SE 2006050342 W 20060919; EP 06799806 A 20060919; SE 0502099 A 20050921