Comparative cost estimates of five coal utilization processes

Technical Report · Mon Jan 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6113107· OSTI ID:6113107

Detailed capital and operating cost estimates were prepared for the generation of electric power in a new, net 500 MW (e), coal-burning facility by five alternative processes: conventional boiler with no control of SO/sub 2/ emissions, atmospheric fluidized bed steam generator (AFB), conventional boiler equipped with a limestone FGD system, conventional boiler equipped with magnesia FGD system, and coal beneficiation followed by a conventional boiler quipped with limestone FGD for part of the flue gas stream. For a coal containing 3.5% sulfur, meeting SO/sub 2/ emission limits of 1.2 pounds per million Btu fired was most economical with the limestone FGD system. This result was unchanged for a coal containing 5% sulfur; however, for 2% sulfur, limestone FGD and AFB were competitive methods of controlling SO/sub 2/ emissions. Brief consideration of 90% reduction of SO/sub 2/ emissions led to the choice of limestone FGD as the most economical method. Byproduct credit for the sulfuric acid produced in regenerating the magnesia could make that system competitive with the limestone FGD system, depending upon local markets. The cost of sludge fixation and disposal would make limestone FGD noneconomic in many situations, if these steps are necessary.

• Research Organization: Chem Systems, Inc., New York (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6113107
• Report Number(s): ORNL/Sub-7384/1
• Country of Publication: United States
• Language: English

Related Subjects

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AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPARATIVE EVALUATIONS
COMPLIANCE
DATA
DATA FORMS
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GASEOUS WASTES
INFORMATION
LIMESTONE
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MANAGEMENT
NONMETALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POLLUTION REGULATIONS
POWER PLANTS
REGENERATION
REGULATIONS
RESERVOIR ROCK
ROCKS
SCRUBBERS
SEDIMENTARY ROCKS
SLUDGES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TABLES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
YIELDS