EP 0079338 B1 19850724 - PROCESS AND DEVICE FOR LOOSENING AND REMOVING SOLID COATINGS ON THE SURFACES OF ENCLOSED SPACES, E.G. THE FLUE GAS SIDE OF A FURNACE OR BOILER
Title (en)
PROCESS AND DEVICE FOR LOOSENING AND REMOVING SOLID COATINGS ON THE SURFACES OF ENCLOSED SPACES, E.G. THE FLUE GAS SIDE OF A FURNACE OR BOILER
Publication
Application
Priority
SE 8103177 A 19810520
Abstract (en)
[origin: WO8204065A1] Process and device for loosening and removing soot and solid coatings on surfaces in enclosed spaces such as the flue gas side of a furnace or boiler. In the case of a furnace, covers and flue gas ducts (4) to the flue gas side are sealed to form a closed chamber, which is supplied with unpressurized steam. Characterizing the process is that the steam, before being introduced into the enclosed space, is saturated with a cleaning composition (14), which includes synthetic tensides, alkali, complexing agents, a corrosion inhibitor and environmentally safe solvents and solvent vehicles. The cleaning of the metal surface is done in one or more steps and is followed by a passivating step for the metal surface, whereby the surface is coated with a passivating agent which counteracts continued deposits on the metal surface. The device is characterized in that it comprises a vessel (15) for liquid cleaning composition (14), said vessel being connected via a line (13) to a reduction valve (11), through which water flows to a steam generating chamber (8), which includes means (9) for vapourizing the water in conjunction with said composition. The combined steam of water and composition is conducted via a steam line (7) to the enclosed space to be cleaned, e.g. the flue gas side of a furnace (1).
IPC 1-7
IPC 8 full level
C10B 43/00 (2006.01); C10L 10/06 (2006.01); F23J 3/00 (2006.01)
CPC (source: EP)
C10B 43/00 (2013.01); C10L 10/06 (2013.01); F23J 3/00 (2013.01)
Designated contracting state (EPC)
BE DE FR GB NL SE
DOCDB simple family (publication)
WO 8204065 A1 19821125; CA 1211345 A 19860916; DE 3264872 D1 19850829; DK 11583 A 19830113; DK 11583 D0 19830113; DK 156677 B 19890918; DK 156677 C 19900205; EP 0079338 A1 19830525; EP 0079338 B1 19850724; FI 75594 B 19880331; FI 75594 C 19880711; FI 830144 A0 19830117; FI 830144 L 19830117; SE 437032 B 19850204; SE 8103177 L 19821121; SE 8106333 L 19821121
DOCDB simple family (application)
SE 8200125 W 19820419; CA 402177 A 19820503; DE 3264872 T 19820419; DK 11583 A 19830113; EP 82901377 A 19820419; FI 830144 A 19830117; SE 8103177 A 19810520; SE 8106333 A 19811027