Chemical treatment additives to minimize high-temperature corrosion and deposits in liquid and solid-fired boilers
Fuel impurities such as sulfur, alkalies (Na, K), vanadium, and chlorine can play an important role in the formation of liquid phase deposits and are considered the main sources of fireside corrosion. Liquid phase deposits not only promote the accumulation of fly ash particles on heat transfer surfaces, but also provide electrolytes for electrochemical attack of metal tubes. Many efforts have been made to minimize or control deposits and corrosion. These include boiler and burner designs, combustion control, fuel selection, mechanical cleaning using highly resistant alloys, and applying chemical additives. Additives can react with ash particles or slag constituents to modify deposit structure; inhibit the formation of liquid phase, corrosive compounds; and form a protective barrier on the tube surfaces.
- OSTI ID:
- 5695978
- Report Number(s):
- CONF-880314-
- Resource Relation:
- Conference: Corrosion '88: National Association of Corrosion Engineers meeting, St. Louis, MO (USA), 21-25 Mar 1988; Other Information: Technical Paper 88137
- Country of Publication:
- United States
- Language:
- English
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