Development of a coal ash corrosivity index for high temperature corrosion

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · J. Eng. Mater. Technol.; (United States)

DOI:https://doi.org/10.1115/1.3225981· OSTI ID:5340669

Shigeta, J I; Hamao, Y; Aoki, H; Kajigaya, I

Current development of Advanced Steam Cycle coal-fired power plants requires superheater and reheater tubing alloys which can withstand severe conditions for high temperature corrosion. A corrosion equation to predict corrosion rates for candidate alloys has been developed by a study of deposits removed from steam generator tubes and from test probes installed in a boiler, supplemented by laboratory studies using synthetic coal ash. The corrosion equation predicts corrosion for a particular coal as a function of its content of sulfur, acid-soluble alkalies, and acid-soluble alkaline earths. Good agreement was obtained between the corrosion equation and 6000-hour tests using probes of TP347H and 17-14 CuMo.

• Research Organization: Ishikawajima-Harima Heavy Industries Co., Ltd., Osogu-Ku, Yokohama (JP)
• OSTI ID: 5340669
• Journal Information: J. Eng. Mater. Technol.; (United States), Journal Name: J. Eng. Mater. Technol.; (United States) Vol. 109:4; ISSN JEMTA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALKALI METALS
ALKALINE EARTH METALS
ALLOYS
ASHES
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
DEPOSITS
ELEMENTS
ENERGY SOURCES
EQUATIONS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
HEAT EXCHANGERS
HEATERS
HEATING
MATERIALS
METALS
POWER PLANTS
PROBES
RESIDUES
STEAM GENERATORS
SULFUR CONTENT
SUPERHEATING
THERMAL POWER PLANTS
VAPOR GENERATORS