Cooling water of pH=9.0-9.6 in Heller system with aluminium heat exchangers
Description
In the boilers of the power plants alkaline water is often applied to prevent corrosion of the steel tubes. As in the Heller-type cooling system direct-contact condenser is used in which the cooling water mixes with the steam condensate, the quality of the cooling water equals that of the condensate. Boiler's feedwater of suitable alkalinity and neutral or slightly alkaline cooling water pH≤8.5, favorable for the aluminium tubes of the heat exchangers, can be simultaneously ensured by a combination of volatile and nonvolatile alkalizers. In certain cases it can be advantageous if pH=9.0-9.6 is allowed in cooling water circuit. For this reason the authors have made several parallel experiments to discover the corrosion of aluminium in water of pH=8.7-9.6. According to the results - summarized in this report - the pH value of the cooling water up to 9.6 does not result in the corrosion of aluminium tubes used in the heat exchangers of the cooling system of the power plant
Additional details
Publishing Information
- Imprint Title
- International cooling-tower conference. Proceedings
- Imprint Pagination
- 569 p.
- Journal Page Range
- p. 3.3.1-3.3.13.
- Report number
- EPRI-GS--6317
Conference
- Title
- 6. cooling tower workshop of the International Association for Hydraulic Research.
- Dates
- 4-7 Oct 1988.
- Place
- Pisa (Italy).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21070370
- Subject category
- S36: MATERIALS SCIENCE; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- ALUMINIUM; BOILERS; CHEMICAL COMPOSITION; CLOSED-CYCLE COOLING SYSTEMS; COOLANTS; COOLING TOWERS; CORROSION; CORROSION INHIBITORS; DEPOSITS; FEASIBILITY STUDIES; FEEDWATER; HEAT EXCHANGERS; PH VALUE; STEAM CONDENSERS; STEELS; THERMAL POWER PLANTS; WATER CHEMISTRY; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CHEMICAL REACTIONS; CLOSED-CYCLE SYSTEMS; COHERENT SCATTERING; COOLING SYSTEMS; DIFFRACTION; ELEMENTS; HYDROGEN COMPOUNDS; IRON ALLOYS; IRON BASE ALLOYS; METALS; OXYGEN COMPOUNDS; POLAR SOLVENTS; POWER PLANTS; SCATTERING; SOLVENTS; VAPOR CONDENSERS; WATER; WATER TREATMENT
Optional Information
- Secondary number(s)
- CONF-8810350--.