Stokers for industrial boilers: assessment of technical, economic, and environmental factors

Technical Report · Mon Dec 15 04:00:00 EST 1975

OSTI ID:7356681

Giammar, R D; Foster, J F; Engdahl, R B

A renewed interest in coal stokers for industrial boilers has developed due to shortages of oil and gas for firing boilers. Therefore, a brief study was undertaken to elucidate the factors governing the near-term potential for the reintroduction of stoker boilers in industrial steam plants. The study included both an analysis of the technical literature and a survey of stoker manufacturers. The operating principles, fuel requirements, and emission characteristics of spreader, underfeed, chain-grate and traveling-grate, and vibrating-grate stokers, the principal types of units currently used for firing industrial boilers, were studied. The type of stoker employed in a given installation tends to correlate with the capacity and vintage of the boiler. For the near future, it appears that the underfeed stoker will predominate for the smaller boiler units and the spreader stoker for those of intermediate size. Where SO/sub 2/ emission regulations cannot be relaxed, the smaller boilers will have to be fired with high-cost low-sulfur coal. The number of smaller installations in the next 5 to 10 years will be influenced by the manner in which the SO/sub 2/ problem is resolved. Ultimately, boilers exploiting advanced combustion processes may replace the smaller stoker boilers.

• Research Organization: Battelle Columbus Labs., Ohio (USA)
• OSTI ID: 7356681
• Report Number(s): NP-21106
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DESIGN
ECONOMICS
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
EQUIPMENT
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FUELS
INDUSTRIAL PLANTS
MARKET
OPERATION
OXIDATION
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
STOKERS
THERMAL POWER PLANTS