EP 0135685 B1 19870909 - METHOD OF PROTECTING STEAM GENERATORS AGAINST MATERIAL DAMAGES
Title (en)
METHOD OF PROTECTING STEAM GENERATORS AGAINST MATERIAL DAMAGES
Publication
Application
Priority
DE 3330598 A 19830825
Abstract (en)
[origin: US4622306A] Decomposable organic compounds can, at times, be contained in the feedwater for steam generators; these decomposable compounds can stem from the untreated water supply or from the recondensate if the steam is utilized as heating steam for chemical plants and the condensate is recycled into the steam generator. The decomposition products can lead to damage to the material in the steam generator during long-term exposure. A partial stream of the feedwater is continuously examined for such compounds; as soon as these occur, they are disintegrated in the partial stream by UV light. The decomposition products are detected by measuring conductivity and/or by means of ion-sensitive electrodes. This measuring process works very rapidly and is highly sensitive, making it possible to consistently recognize contaminated water quantities and then to remove same in a controlled fashion from the feedwater stream for the steam generator or to process same into unobjectionable feedwater. The process permits the saving of large amounts of fresh feedwater, especially in steam generators with power-heat linkage in chemical plants.
IPC 1-7
IPC 8 full level
F22B 37/56 (2006.01); F22D 11/00 (2006.01)
CPC (source: EP US)
F22B 37/56 (2013.01 - EP US); F22D 11/006 (2013.01 - EP US); Y10T 436/12 (2015.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0135685 A2 19850403; EP 0135685 A3 19851218; EP 0135685 B1 19870909; DE 3330598 A1 19850314; DE 3466056 D1 19871015; US 4622306 A 19861111
DOCDB simple family (application)
EP 84107640 A 19840702; DE 3330598 A 19830825; DE 3466056 T 19840702; US 64058384 A 19840814