System design study to reduce capital and operating cost of a moving distributor, AFB advanced concept - comparison with an oil-fired boiler. Final report

Technical Report · Sun Dec 01 04:00:00 EST 1985

OSTI ID:5401814

Mah, C S; West, L K; Anderson, R E; Berkheimer, I L; Cahill, D V

The Aerojet Energy Conversion Company, under contract with the United States Department of Energy, has performed a comparative economic study of the Aerojet Universal Atmospheric Fluidized Bed Combustion (UAFBC) system and a coventional atmospheric fluidized bed combustion (AFBC) system. The program title, ''System Design Study to Reduce Capital and Operating Cost and Bench Scale Testing of a Moving Distributor, AFB Concept,'' is a good description of the general objective of the program. The specific objective was to compare the UAFBC with the conventional AFBC in terms of normalized steam cost. The boilers were designed for 150,00 lb/hr of steam at 650 psig and 750/sup 0/F. The reference coal used in the analysis was Pittsburgh No. 8 coal with a sulfur content of 4.3% and a higher heating value of 12,919 Bru/lb. The analysis assumed a plant life of 20 years and a discount rate of 15%. The UAFBC systems included the usual elements of the conventional cola-fired AFBC steam plant, but the coal preparation sysbsystem for the UAFBC was considerably simpler because the system can use ''run-of-mine'' coal. The UAFBC boiler itself consisted of a staged-combustion fluidized-bed, superimposed over a static bed, the latter supported by a moving distributor. It incorporated a fines burnup combustor, an entrained reciculating gas cleanup bed, and conventional convection boiler. The key features of the UAFBC design were: High fuel flexibility; low NO/sub x/ emission; and superior turndown capability. 30 refs., 52 figs., 12 tabs.

• Research Organization: Aerojet Energy Conversion Co., Sacramento, CA (USA)
• DOE Contract Number: AC21-84MC21171
• OSTI ID: 5401814
• Report Number(s): DOE/MC/21171-2069; ON: DE86006627
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
AIR POLLUTION CONTROL
BOILERS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COMBUSTION
CONCENTRATORS
CONTROL
CYCLONE SEPARATORS
DATA
DESIGN
DRY SCRUBBERS
ECONOMICS
EFFICIENCY
ELEMENTS
ENERGY SOURCES
EQUIPMENT
EXPERIMENTAL DATA
FEEDWATER
FLUE GAS
FLUIDIZED BED BOILERS
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDROGEN COMPOUNDS
INERTIAL SEPARATORS
INFORMATION
LIMESTONE
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
RETENTION
ROCKS
SCRUBBERS
SEDIMENTARY ROCKS
SEPARATION EQUIPMENT
STAGED COMBUSTION
SULFUR
TEMPERATURE CONTROL
TESTING
THERMAL EFFICIENCY
THERMOCHEMICAL PROCESSES
WASTES
WATER
WATER TREATMENT