Combustion testing of San Miguel lignite
Results from pilot plant testing of the San Miguel lignite are: (1) The ash fouling furnace is an empirical tool which provides good information on relative fouling potential of various fuels. In the case of San Miguel lignite tests suggest a severe fouling problem is conventional boiler designs are employed. (2) No effect in either deposition rate or deposit strength was seen when MgO and CaCO/sub 3/ were used at additives. For these tests a single addition rate was utilizing two different injection points in the system. (3) No bed agglomeration was noted under the varied run conditions used in testing of this lignite fuel. (4) The atmospheric fluidized-bed combustor (AFBC) NO/sub x/ level emitted in the flue gas were always less than the NSPS limit of 0.6 lbs NO/sub 2//10/sup 6/ Btu. (5) Utilization of inherent alkali was less than that observed for North Dakota lignites. It was possible to meet NSPS standards of 90 percent sulfur capture using limestone addition. (6) Pulverized-coal combustion of San Miguel lignite resulted in a larger portion of <1 ..mu..m size particulates than has been noted in similar tests with the Arapahoe subbituminous coal and the Ledbetter Texas lignite. (7) The composition of particulates from P-C combustion of San Miguel lignite has a more varied composition than has been seen in testing with other types of coal. Use of lower grade fuels such as the lignite from the San Miguel mine is inevitable if we are to meet the expanding needs for energy in the United States today. To make use of these different fuels extensive testing on laboratory and pilot scales will be beneficial in avoiding major problems due to the different characteristics these materials possess. The present successful operation of a full scale boiler using the San Miguel lignite is a good example of the value pilot scale studies can have on the road to successful operation.
- Research Organization:
- Department of Energy, Grand Forks, ND (USA). Grand Forks Energy Technology Center
- OSTI ID:
- 6473209
- Report Number(s):
- DOE/FC-1007; CONF-821182-1; ON: DE83009844
- Country of Publication:
- United States
- Language:
- English
Similar Records
San Miguel Project
Testing and evaluation of fluidized-bed combustion of Texas lignite. Final report
Related Subjects
014000* -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200108 -- Fossil-Fueled Power Plants-- Fuels-- (1980-)
ADDITIVES
ASHES
BROWN COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COAL
COAL FINES
COMBUSTION
COMBUSTORS
DATA
DEPOSITION
DEPOSITS
ENERGY SOURCES
EVALUATION
EXPERIMENTAL DATA
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FOULING
FUEL ADDITIVES
FUELS
FURNACES
INFORMATION
LIGNITE
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POWER PLANTS
RESIDUES
TEST FACILITIES
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES