Power plants – Combustion products used as motive fluid
Patent
1991-03-18
1993-08-17
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
60 3912, 110212, 431 3, 431 5, 431 7, F02B 4300, F02G 300
Patent
active
052363546
ABSTRACT:
A power plant with efficient emission control and high turbine inlet temperatures is disclosed. The power plant includes a combustor for the combustion of carbonaceous sulfur-bearing fuel. The combustion of this fuel produces a hot gas with SO.sub.x and NO.sub.x contaminants. This gas is conveyed to a refractory heat exchanger where some of the heat from the gas is transferred to a pressurized air stream. The gas is then conveyed to a fluidized bed reactor. The fluidized bed reactor includes a central chamber with a fluidized bed positioned at the base of the chamber. Heat exchangers are positioned within the fluidized bed. These heat exchangers preheat the pressurized air stream which is then conveyed to the refractory heat exchanger and later conveyed to a turbine assembly. The fluidized bed reactor also includes circulating particulate matter, such as CaO. Ammonia may also be injected into the fluidized bed reactor. When operating at a temperature of at least 1,500.degree. F., the fluidized bed reactor facilitates chemical reactions between the CaO and the SO.sub.x contaminants. The fluidized bed reactor also facilitates chemical reactions between the ammonia and NO.sub.x contaminants. These reactions significantly reduce the contaminants originally found in the hot, dirty gas.
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Goldbach Gerhardt O.
Haas John C.
Walton Frank
Bertsch Richard A.
Combustion Power Company, Inc.
Richman Howard R.
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