The chemistry of sodium with sulfur in flames

Conference · Sun Jan 01 04:00:00 EST 1989 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)

OSTI ID:5046693

Steinberg, M; Schofield, K ^[1]

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1. Univ. of California, Santa Barbara (USA)

The use of fuel/air systems contaminated with sodium and sulfur in combustion driven gas turbines is a source of turbine blade corrosion. Sodium sulfate, which deposits on turbine surfaces or is chemically formed there, has long been recognized as the active corrosive agent. There is very little chemical kinetic information for modeling this practical problem, and one if forced to invoke chemical equilibrium to attempt any quantitative treatment. Sodium/sulfur chemistry has been addressed in a very few studies. The present study is an outgrowth of two previous efforts in this laboratory, sulfur chemistry and sodium oxidation chemistry, in H{sub 2}/O{sub 2}/N{sub 2} flames. Sodium/sulfur chemistry competes with the sodium oxidation chemistry and both are influenced by the flame radical/sulfur chemistry interaction. In this study sodium/sulfur chemistry is modeled in a series of rich and lean H{sub 2}/O{sub 2}/N{sub 2} flames. It is found that simple equilibria identified in earlier studies can not account for the behavior exhibited in the present data. Kinetic modeling has been conducted assuming, as is often the case, that one sodium/sulfur product may dominate. To a good approximation this seems to be the situation in both the rich and lean flames. NaSO appears to be the dominant sodium/sulfur product in the rich H{sub 2}/O{sub 2}/N{sub 2} flames with NaSO{sub 2} dominant in the lean flames.

• OSTI ID: 5046693
• Report Number(s): CONF-8904164--
• Conference Information: Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 34:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ALKALI METALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
DATA
ELEMENTS
EQUILIBRIUM
EXPERIMENTAL DATA
FLAMES
INFORMATION
KINETICS
MATHEMATICAL MODELS
METALS
NONMETALS
NUMERICAL DATA
OXIDATION
PHASE STUDIES
REACTION KINETICS
SODIUM
SULFUR
THERMOCHEMICAL PROCESSES