Development of retrofit external slagging combustor

Technical Report · Wed Jul 01 00:00:00 EDT 1987

DOI:https://doi.org/10.2172/7054049· OSTI ID:7054049

The overall objective of this program is utilization of coal in industrial and utility boilers now using a clan fuel (oil). Technical objectives are to obtain sufficiently high removal of coal mineral matter from the combustion products prior to entry into the boiler heat-exchanger components and to minimize the emission of particles. The management and major tasks were done by ARL for combustor testing in the modified MHD combustor and in the 25 {times} 10{sup 6} Btu/hr Development Test Combustor. The existing MHD coal combustion test apparatus at the AL/Haverhill facility was reactivated and the modified combustor assembly with a new exhaust/after burner system was installed. About 40 tests were conducted with the modified combustor using standard power plant grind of Eastern Bituminous Coal to obtain data for the design of the Development Test Combustor. Tests were also performed using a finer grind coal (90% -- 200 mesh). The design and fabrication of a 25 {times} 10{sup 6} Btu/hr Development Test Combustor was based on the results obtained from preliminary combustion testing, flow modeling tests and analytical modeling of the combustor flow. More than 100 brief tests have been conducted so far in the Development Test Combustor in the thermal input range of 9--30 {times} 10{sup 6} (Btu/Hr) using primarily Eastern Bituminous Coal, as well as Illinois No. 6 coal and North Dakota Zap Lignite. The slag/ash rejection achieved by the collector and in the exhaust duct was in the range of 50 to 70% depending on the coal type used and the level of the thermal throughput. 20 refs., 88 figs.

• Research Organization: Avco-Everett Research Lab., Everett, MA (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-84PC60417
• OSTI ID: 7054049
• Report Number(s): DOE/PC/60417-T1; ON: DE90008441
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
30 DIRECT ENERGY CONVERSION
300103 -- MHD Generators-- Materials
Components
& Auxiliaries
ASHES
BOILER FUELS
BOILERS
CARBONACEOUS MATERIALS
COAL
COMBUSTION PRODUCTS
COMBUSTORS
DESIGN
DOCUMENT TYPES
ECONOMICS
ENERGY SOURCES
ENERGY TRANSFER
FLUID FLOW
FLUID MECHANICS
FOSSIL FUELS
FUELS
HEAT TRANSFER
HYDRODYNAMICS
MAGNETOHYDRODYNAMICS
MATERIALS
MECHANICS
NOZZLES
PARTICLE SIZE
PROGRESS REPORT
RESIDUES
RETROFITTING
SIZE
SOLIDS FLOW