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:6023637

The design of coal-fired combustor/heat exchangers suitable for inputing the heat to base-loaded, closed-cycle, gas turbine, 350 MWe, central station power generation systems is discussed. 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 F, 1750 F, and 2250 F maximum working-fluid temperatures. Each selected cycle is bottomed with a Rankine/steam cycle operating at 2400 psi/1050 F/1050 F. The coal inputs to stations incorporating the selected cycles are estimated to range from 82 to 88% of the required input to a 2400-psi/1000 F/1000 F conventional steam station. 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. 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: 6023637
• Report Number(s): RI/RD-78-212B
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200101* -- Fossil-Fueled Power Plants-- Cooling & Heat Transfer Equipment & Systems
200104 -- Fossil-Fueled Power Plants-- Components
AIR POLLUTION CONTROL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBINED-CYCLE POWER PLANTS
COMBUSTION
COMBUSTORS
COMMINUTION
CORROSION
COST
DATA
DATA FORMS
DESIGN
ELECTRIC POWER
ENERGY SOURCES
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
GAS TURBINE POWER PLANTS
GAS TURBINES
GRAPHS
HEAT EXCHANGERS
HIGH TEMPERATURE
INFORMATION
NUMERICAL DATA
OXIDATION
PERFORMANCE
POLLUTION CONTROL
POWER
POWER GENERATION
POWER PLANTS
RESEARCH PROGRAMS
TABLES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VERY HIGH TEMPERATURE