Combustion - Products Summary
Hybrid Combustion Technologies
Products Summary Atmospheric Products Hybrid Products Pressurized Products
The Combustion Technologies products in this class are characterized by the processes operating at two pressure levels. Pressurized topping combustion occurs to support a gas turbine. Additional combustion occurs at near atmospheric pressure for heat generation to raise steam to support bottoming cycle power conversion.
There are two types of hybrid combustion technologies. Indirectly fired power systems (IFPS), the first, provide heat from coal to a gas turbine topping cycle through a heat exchanger, so there is no direct passage of coal combustion products through the gas turbine. Gasification fluidized-bed combined cycles (GFBCC), the second, combine pressurized production of syngas from coal that is filtered and burned in a gas turbine and the atmospheric pressure combustion of char to raise steam for a bottoming steam cycle.
Indirectly Fired Power Systems (IFPS) |
Based on using an indirectly fired gas turbine and advanced boiler technology that integrates combustion, heat transfer, and emissions control. The steam cycles operate with atmospheric pressure boilers.
Project page links available: Repowering the H.F. Lee Unit 2 with CHIPPS |
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Gasification Fluidized-bed Combined Cycle Systems (GFBCC) |
Hybrid systems with a circulating pressurized circulating fluidized-bed
(PCFB) partial gasifier and an atmospheric pressure CFB combustor. The PCFB
parital gasifier operates at elevated pressures (10 to 30 times atmospheric pressure) to provide syngas for a gas turbine. The remaining char is burned
in an atmospheric pressure CFB. GFBCC provides combined cycle plant efficiency using coal; it uses high efficiency gas turbines in combination with steam turbines to add output. This develops the greatest efficiency advantage from the coal's energy.
Project page links available: Repowering the Sheldon Station with GFBCC |
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Combustion-based High-performance Power Systems (CHIPPS) |
Another hybrid system with a circulating pressurized circulating fluidized-bed (PCFB) partial gasifier is CHIPPS. The principal difference between CHIPPS and GFBCC is that the char from the PCFB partial gasifier is instead burned in a conventional furnace equipped with specialized burners. The PCFB parital gasifier operates at elevated pressures to provide syngas for a gas turbine. CHIPPS provides combined cycle plant efficiency using coal; it uses high efficiency gas turbines in combination with steam turbines to add output. This develops the greatest efficiency advantage from the coal's energy. CHIPPS is expected to particular application as a repowering technology for sites where the existing furnace is in good condition.
Project page links available: Repowering the H.F. Lee Station with CHIPPS |
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"Vision 21" and Hybrid Advanced Combustion Systems |
| These are novel combustion components or arrangement of advanced combustion components which can be integrated with other power system advanced components to satisfy the technical, emissions, and economic requirements of the Vision 21 power plants of the future. |
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