Advanced Coal-Fueled Combustor/Heat Exchanger Technology Study. Cogeneration Applications. Final Report, July 1978-April 1979

摘要

This report is concerned principally with the design of coal-fired combustor/heat exchangers suitable for imputting the heat to closed-cycle gas turbine cogeneration systems in the 25- to 50- MWe size range. A wide variety of CCGT based cogeneration 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 and 1750 F turbine inlet temperatures. Each selected cycle is bottomed with a hot water or steam process heater. The coal inputs to installations incorporating the selected cycles are estimated to range as low as 60% of the required input to a 1200 psi/950 F conventional steam turbine-based cogeneration system operating at the same power to process heat ratio. The key technical features of the three 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. The cost of electricity and process heat produced in three cogeneration installations incorporating the studied CCGT cycles and combustor/heat exchangers is estimated. Comparisons are made of the economics of each of the three CCGT installations versus equivalent noncogeneration and steam turbine-based cogeneration systems (associated diskette). (ERA citation 11:004767)