High temperature corrosion enhanced by residual fuel oil ash deposits

Book · Sat Dec 31 00:00:00 EST 1994

OSTI ID:70111

Wong-Moreno, A; Martinez, Y M ^[1]; Martinez, L ^[2]

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1. Inst. de Investigaciones Electricas, Cuernavaca (Mexico)
2. UNAM, Cuernavaca (Mexico)

Boiler steel tubes in Mexican electric power plants are reported to be highly sensitive to high temperature corrosion enhanced by liquid phase fuel oil ash deposits. The combustion of fuel oils with high asphaltene and other vanadium and sulphur rich-compounds produces ash deposits on tube surfaces. This paper is devoted to a study of the influence of nine fuel oil ash deposits with V/(Na+S) atomic ratios ranging from 0.68 to 47.3, on the high temperature corrosion of tube stainless steels 304H, 321H, 316H, 347H, 310 and 446 and low and medium chromium steels T11, T22 and T9. The steel surfaces were exposed to the ash deposits at temperatures ranging between 440C and 650C. The deposits and the exposed surfaces were characterized employing conventional chemical analysis, X-ray diffraction, SEM and X-ray microanalysis.

• OSTI ID: 70111
• Report Number(s): CONF-940222-; TRN: IM9529%%450
• Resource Relation: Conference: Corrosion 94: National Association of Corrosion Engineers (NACE) international annual conference, Baltimore, MD (United States), 28 Feb - 4 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Corrosion/94 conference papers; PB: 5005 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
20 FOSSIL-FUELED POWER PLANTS
02 PETROLEUM
BOILERS
TUBES
CORROSION
ASHES
CORROSIVE EFFECTS
STAINLESS STEEL-304
STAINLESS STEEL-316
STAINLESS STEEL-310
STAINLESS STEEL-321
STAINLESS STEEL-347
STAINLESS STEEL-446
CHROMIUM STEELS
FOSSIL-FUEL POWER PLANTS
RESIDUAL FUELS
VANADIUM
SULFUR CONTENT
SODIUM
SCANNING ELECTRON MICROSCOPY
FOULING
CHEMICAL COMPOSITION
EXPERIMENTAL DATA