Advanced coal-fueled combustor/heat exchanger technology study. Final report, March 1977--June 1978

Technical Report · Sun Jan 01 04:00:00 EST 1978

OSTI ID:5905017

This report is concerned principally with the design of coal-fired combustor/heat exchangers suitable for inputting the heat to base-loaded, closed-cycle, gas turbine, 350 MWe, central station power generation systems. A wide variety of CCGT cycles are evaluated to establish the performance requirements for the combustor/heat exchanger. The cycles finally selected for combustor/heat exchanger design operate at 1550, 1750, and 2250 F maximum working-fluid temperatures. At the 1550 F maximum working-fluid temperature, two combustor/heat exchanger preliminary designs are created, one utilizing the pulverized-coal-fired, dry-bottom furnace firing concept and the other utilizing the atmospheric-pressure, fluidized bed with limestone addition firing concept. In both designs, all heat exchanger surface is metal. At the 1750 F maximum working-fluid temperature, the combustor/heat exchanger preliminary design is based on a series arrangement of high- and low-temperature fluidized beds. At 2250 F maximum working-fluid temperature, the combustor/heat exchanger preliminary design is based on the slagging cyclone combustor concept. Heat exchanger surface exposed to working-fluid temperatures above 1550 F in the last two designs is constructed of silicon carbide. The key technical features of the four preliminary designs are identified and analyzed. Research and development programs to advance the technology of these designs to a state of readiness for commercial application are outlined, and R and D cost estimates are presented. The cost of electricity produced in 700 MWe stations incorporating the studied CCGT cycles and combustor/heat exchangers is estimated and compared with the cost of electricity in conventional steam stations.

• Research Organization: Rockwell International Corp., Canoga Park, CA (USA). Rocketdyne Div.
• DOE Contract Number: EF-77-C-01-2612
• OSTI ID: 5905017
• Report Number(s): RI/RD-78-212A
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200102* -- Fossil-Fueled Power Plants-- Power Cycles
CARBIDES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CLOSED-CYCLE SYSTEMS
COAL
COMBINED-CYCLE POWER PLANTS
COMBUSTION
COMBUSTORS
COMPARATIVE EVALUATIONS
COST
DESIGN
ELECTRIC POWER
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GAS TURBINES
HEAT EXCHANGERS
MATERIALS
OXIDATION
POWER
POWER PLANTS
SILICON CARBIDES
SILICON COMPOUNDS
STEAM TURBINES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
WORKING FLUIDS