Power plants – Combustion products used as motive fluid
Patent
1991-05-15
1993-05-04
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
60723, 60732, F23R 340, F02C 712
Patent
active
052070530
ABSTRACT:
A method of combusting an endothermic fuel with staged rich/lean combustion includes transferring thermal energy from a heat source, such as the wall of a rich combustor, to an endothermic fuel decomposition catalyst to cool the heat source and heat the fuel and catalyst to a temperature sufficient to endothermically decompose an endothermic fuel. The catalyst is contacted with the fuel to cause the fuel to decompose into a reaction product stream. The reaction product stream is mixed with a first air stream to form a first fuel/air mixture having an equivalence ratio greater than 1 and the first fuel/air mixture is combusted in a rich combustion stage to produce a combustion product stream. The combustion product stream is mixed with a second air stream to form a second fuel/air mixture having an equivalence ratio less than 1 and the second fuel/air mixture is combusted in a lean combustion stage to produce an exhaust gas stream containing decreased amounts of NO.sub.x. The invention also includes a system for practicing the method.
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Rosfjord Thomas J.
Spadaccini Louis J.
Bertsch Richard A.
Romanik George J.
Thorpe Timothy S.
United Technologies Corporation
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