Power plants – Combustion products used as motive fluid
Patent
1991-06-04
1993-06-15
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
60 3912, 60 3955, F02G 300
Patent
active
052188159
ABSTRACT:
A gas turbine cycle in which air is compressed to superatmospheric pressure, water is circulated in heat exchange relation with the compressed air to convert the sensible heat therein to heated water, the compressed air is humidified using the heated water, the humidified air is heated with sensible heat in the turbine exhaust gases, and a solid fuel such as coal is converted to a motive fluid for driving the gas turbine by substoichiometrically burning solid fuel under superatmospheric pressure using oxygen from the heated humidified air for combustion of the solid fuel and to produce combustible fuel gas and char, above stoichiometrically and adiabatically burning the char under superatmospheric pressure by supplying the heated humidified air in sufficient quantity to provide oxygen for combustion of the char and to control the temperature of such combustion, thereby to produce char combustion gases containing oxygen, cleaning the combustible fuel gas and the char combustion gasses to remove particulate materials therefrom, and burning the combustible fuel gas under superatmospheric pressure, oxygen for combustion of the gases being supplied by the char combustion gases and the heated humidified air, and the temperature of such gas combustion being controlled by the quantity of heated humidified air supplied for burning the fuel gas and the char combustion gases, the products of such gas combustion providing the motive fluid for driving the turbine.
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Bertsch Richard A.
Donlee Technologies Inc.
Kocharov Michael I.
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