EP 0363536 A1 19900418 - Treatment of condenser tubes.
Title (en)
Treatment of condenser tubes.
Title (de)
Behandlung von Kondensatorröhren.
Title (fr)
Traitement de tubes de condenseurs.
Publication
Application
Priority
GB 8710011 A 19870428
Abstract (en)
The treatment of the external surfaces of condenser tubes, such as those used in power station condenser plants, with certain inorganic chemical compounds renders those surfaces or parts thereof sufficiently water-repellent so as to prevent the formation thereon, during operation of the condenser, of condensate films. Instead of continuous condensate films forming on the treated condenser tube surfaces during operation of the condenser, condensation is formed as discrete droplets of water which run down and drip off the tubes with the result that the condenser plant can work at higher levels of efficiency. Suitable chemical substances for use in the treatment of condenser tube surfaces include Cr VI anions, Cr<3><+> ions, and alkali metal tungstates, vanadates and molybdates.
IPC 1-7
IPC 8 full level
C23C 22/24 (2006.01); C23C 22/48 (2006.01); C23C 22/63 (2006.01); C25D 11/00 (2006.01); F28F 13/18 (2006.01)
CPC (source: EP)
C23C 22/24 (2013.01); C23C 22/48 (2013.01); C23C 22/63 (2013.01); C25D 11/00 (2013.01); F28F 13/182 (2013.01); F28F 2245/04 (2013.01)
Citation (search report)
- US 3899366 A 19750812 - TAJKOWSKI EDWARD GEORGE
- FR 1079881 A 19541203 - ARMCO INT CORP
- DE 3200245 A1 19830714 - SHOWA ALUMINUM CORP [JP]
- [E] GB 2204249 A 19881109 - BNF METALS TECH CENTRE
- [A] EP 0034040 A1 19810819 - BNF METALS TECH CENTRE [GB]
- [A] FR 679011 A 19300408
- [A] US 3834999 A 19740910 - HRADCOVSKY R, et al
- [A] GB 2054648 A 19810218 - GLYCO METALL WERKE
- [A] DE 56720 C
- [A] US 4211276 A 19800708 - ISHIKAWA YUICHI [JP], et al
- [A] FR 2152802 A1 19730427 - LUFT KALTETECHN K
Designated contracting state (EPC)
BE CH DE ES FR IT LI LU NL SE
DOCDB simple family (publication)
GB 2204249 A 19881109; GB 2204249 B 19910109; GB 8810083 D0 19880602; EP 0363536 A1 19900418; GB 8710011 D0 19870603
DOCDB simple family (application)
GB 8810083 A 19880428; EP 88309565 A 19881012; GB 8710011 A 19870428