Title:
CHEMICAL WATER-STEAM CYCLE CONDITIONING
Document Type and Number:
WIPO Patent Application WO/2009/138216
Kind Code:
A4
Abstract:
Disclosed is a method for the chemical water-steam conditioning of a water/steam/condensate medium which is conducted in the water-steam cycle of a particularly fossil fuel-operated, continuous steam generator (1) of a power plant and is fed to an air condenser (12) arranged downstream of a turbine system (8) in the water-steam cycle, said water-steam conditioning encompassing the metering of an alkalizing agent into the water/steam/condensate medium. The aim of the invention is to find, for said method, a solution which prevents erosion corrosion and corrosive nitrate and/or nitrite formation during a combined treatment (OT process) or neutral treatment when air-cooled condensers made of ferritic material are used in the water-steam cycle of a steam generator. Said aim is achieved by in particular additionally metering the alkalizing agent into the water/steam/condensate medium downstream of the continuous steam generator (1), preferably in the zone of at least one low-pressure turbine (1) and/or downstream of a low-pressure turbine (11), before the medium penetrates into the air condenser (12), and by adjusting and carrying out an all volatile treatment (AVT) of the water/steam conditioning process.
Inventors:
GUENES SENER (DE)
TEUTENBERG ULRICH (DE)
TEUTENBERG ULRICH (DE)
Application Number:
PCT/EP2009/003389
Publication Date:
August 19, 2010
Filing Date:
May 13, 2009
Export Citation:
Assignee:
HITACHI POWER EUROPE GMBH (DE)
GUENES SENER (DE)
TEUTENBERG ULRICH (DE)
GUENES SENER (DE)
TEUTENBERG ULRICH (DE)
International Classes:
F22B37/02; C23F11/14; C23F11/18; F28F19/00; F28G9/00
Attorney, Agent or Firm:
BERGMANN, Michael (Jentschura & PartnerKennedydamm 55/Roβstrasse, Düsseldorf, DE)
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