Testing and evaluation of fluidized-bed combustion of Texas lignite. Final report
The Texas Energy and Natural Resources Advisory Council (TENRAC) supports utilization of the state's lignite resources through lignite research, development, and demonstration. This report presents the results of a testing and evaluation program to assess the technological, environmental, economic, and institutional issues affecting the utilization of Texas lignite for industrial-sized AFBC applications. Tests were conducted by Combustion Power Company (CPC) on Texas lignites from the Wilcox Group (Monticello mine) and from the Jackson Group (San Miguel mine). In general, these lignites are poor quality fuels with low heating values and high moisture and ash contents. Jackson lignite contains high sulfur and moderate sodium levels. Wilcox lignite is low in sulfur and sodium content. Short-term tests were conducted with these lignites that primarily investigated the effect of bed temperature and limestone addition rate. The test unit was an atmospheric pressure fluid bed combustor with a seven square foot bed area capable of firing up to 800 pounds per hour of Texas lignite at the conditions tested. The size of this test unit should be large enough to yield data useable for designing larger industrial-sized facilities. However, the bed area may be too small to provide scalable data regarding lignite feed points and air distribution in the boiler. The test unit was also equipped with components that are being considered for use in industrial systems such as a limestone feed system and baghouse for SO/sub 2/ and particulate emissions control, respectively, and a recycle cyclone to improve combustion efficiency and limestone utilization. Major results of the project are summarized.
- Research Organization:
- Radian Corp., Austin, TX (USA); Combustion Power Co., Inc., Menlo Park, CA (USA)
- OSTI ID:
- 6228544
- Report Number(s):
- TENRAC/EDF-068; ON: DE83902064
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
014000* -- Coal
Lignite
& Peat-- Combustion
ASHES
BROWN COAL
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION PROPERTIES
CONCENTRATORS
CYCLONE SEPARATORS
DATA
DISPERSIONS
DISSOLUTION
ENERGY SOURCES
EQUIPMENT
EXPERIMENTAL DATA
FEDERAL REGION VI
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
INERTIAL SEPARATORS
INFORMATION
LEACHATES
LEACHING
LIGNITE
LIMESTONE
MARKET
MATERIALS
MIXTURES
MOISTURE
NORTH AMERICA
NUMERICAL DATA
OXIDATION
POLLUTION CONTROL EQUIPMENT
RECOMMENDATIONS
RECYCLING
RESIDUES
ROCKS
SEDIMENTARY ROCKS
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SOLUTIONS
TEST FACILITIES
TEXAS
THERMOCHEMICAL PROCESSES
USA