Boiler burns coal, oil, gas, and wastes

Journal Article · Mon Dec 19 04:00:00 EST 1977 · Chem. Eng. (N.Y.); (United States)

OSTI ID:6239839

The multi-fuel boiler is basically a coal- or solid-waste-fired unit that can be easily adapted by the customer to the firing of oil, gas, and liquid or gaseous wastes. The boiler has been tested on solid wastes ranging from grape stalks to sludge and refuse-derived fuel. Wood of up to 25% moisture content can be burned without supplementary fuel. The Scotch-marine-type, fire-tube boiler is available in both single- or double-furnace options, with 2760 to 16,000 lb/hr of steam at 250 psi (80 to 465 hp) and up to 32,000 lb/hr (930 hp), respectively. The boiler can withstand the extreme variations in back-end temperature encountered with different fuels, and its large combustion chamber, rated at 130,000 Btu/cu ft provides adequate residence time for their burning. When firing coal, the usual combustion performance is 11.5% CO/sub 2/ (low fire) to 13% CO/sub 2/ (high fire). At 145 psi, the stack temperature is approx. = to 430/sup 0/F. The boiler can be operated at as low as one-third design capacity, maintaining a thermal efficiency of 83%. The boiler's performance with oil or gas is similar to that of conventional units.

• OSTI ID: 6239839
• Journal Information: Chem. Eng. (N.Y.); (United States), Journal Name: Chem. Eng. (N.Y.); (United States) Vol. 84:27; ISSN CHEEA
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200108* -- Fossil-Fueled Power Plants-- Fuels-- (1980-)
BOILER FUEL
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DESIGN
EFFICIENCY
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUEL OILS
FUEL SUBSTITUTION
FUELS
GAS FUELS
GASES
NATURAL GAS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PERFORMANCE
PETROLEUM PRODUCTS
REFUSE DERIVED FUELS
SOLID WASTES
THERMAL EFFICIENCY
THERMOCHEMICAL PROCESSES
WASTES