Fireside additives boost boiler efficiency and reliability

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Power; (United States)

OSTI ID:6344814

Elliott, T C

Fireside additives are gaining wider recognition in combating problems related to boiler performance and reliability - mainly corrosion, fouling, superheat control, acidic emissions, and flyash control. Fuel additives and other fireside additives have been used mainly with oil firing and their uses are reviewed. Although the present knowledge on additive use in pulverized coal-fired boilers is inadequate, possible applications are indicated. MgO-based additives, even at small dose rates, may be effective in reducing low-temperature problems arising from the presence of free SO/sub 3/ or H/sub 2/SO/sub 4/. NaAlO/sub 2/-based additives also may be helpful. For coals containing large amounts of calcium (as CaO), additions of calcium may effectively raise ash-fusion temperatures. Certain naturally occurring substances (for example, limestone, dolomite, kaolin) or low-priced synthetic materials may be able to reduce the tendency of coal ash to form high-strength bonded deposits.

• OSTI ID: 6344814
• Journal Information: Power; (United States), Journal Name: Power; (United States) Vol. 126:3; ISSN POWEA
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200108* -- Fossil-Fueled Power Plants-- Fuels-- (1980-)
ADDITIVES
ALKALI METALS
BOILER FUELS
BOILERS
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
EFFICIENCY
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FOULING
FUEL ADDITIVES
FUELS
METALS
OXIDES
OXYGEN COMPOUNDS
PLUMES
SODIUM
SULFUR COMPOUNDS
SULFUR OXIDES
SULFUR TRIOXIDE
THERMAL EFFICIENCY
TRANSITION ELEMENTS
VANADIUM
VISIBILITY