6- x 6-ft atmospheric fluidized-bed-combustion development facility: 1980 test results
Fluidized-bed combustion of coal is being studied as one method of meeting strict environmental standards. The Electric Power Research Institute (EPRI) and The Babcock and Wilcox Company (B and W) have been actively working to develop sufficient atmospheric fluidized-bed-combustion (AFBC) performance data to aid in developing this promising process into a commercially available technology. Task 1 provides an in-depth analysis and interpretation for all experimental test data. The objective is to evaluate the effect of significant parameters at various operating conditions and to obtain performance trends. In 1980, graphical analyses were made of: all recycle tests to evaluate sulfur capture, combustion, nitrogen oxide, cyclone efficiency, and lime utilization; heat-transfer coefficient; and sulfation of bed material. Task 2 - the focal point of the program - is directed at 6' x 6' AFBC Test Facility operation. In 1980, significant data were generated in the areas of fly ash recycle, coal particle size, limestone particle size, 4 ft/sec and 8 ft/sec velocity operation, and combustion of lignite. Fly-ash recycle continued to result in combustion efficiencies on the order of 98%. The highly successful lignite test resulted in combustion efficiencies exceeding 99% with sulfur captures of 85% at a Ca/S molar feed ratio of about 1.4. Comparison of the 4 ft/sec data with the 8 ft/sec data showed that performance at these fluidizing velocities was almost identical. Tests were also conducted to evaluate variable bed height as a means of load control. Based on this data, bed height appears to be very promising for controlling load. In addition, one test was devoted to testing feed nozzles designed to prevent feedline plugging during bed slumping. Based on the nozzle designs tested, a floating cap design was recommended for further evaluation.
- Research Organization:
- Babcock and Wilcox Co., Alliance, OH (USA). Research and Development Div.
- OSTI ID:
- 5992356
- Report Number(s):
- EPRI-CS-3115; ON: DE83902640
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
FLUIDIZED-BED COMBUSTION
TEST FACILITIES
FLUIDIZED-BED COMBUSTORS
PERFORMANCE TESTING
DESIGN
EFFICIENCY
FLY ASH
HEAT TRANSFER
LIGNITE
LIMESTONE
MODIFICATIONS
NITROGEN OXIDES
PARTICLE SIZE
SULFUR
AEROSOL WASTES
ASHES
BROWN COAL
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
ELEMENTS
ENERGY SOURCES
ENERGY TRANSFER
FOSSIL FUELS
FUELS
MATERIALS
NITROGEN COMPOUNDS
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RESIDUES
ROCKS
SEDIMENTARY ROCKS
SIZE
TESTING
THERMOCHEMICAL PROCESSES
WASTES
421000* - Engineering- Combustion Systems