Secondary combustor for low NOx gas combustion turbine
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United States of America Patent
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N/A
Issued Date -
Feb 6, 2003
app pub date -
Aug 2, 2001
filing date -
Aug 2, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A combustion turbine which produces a reduced amount of NO.sub.x is provided. The combustion turbine reduces the amount of NO.sub.x produced by utilizing a secondary combustor. By using a secondary combustor the working gas of the combustion turbine does not need to be heated above 2500.degree. F., the temperature at which a substantial amount of NO.sub.x begins to form, until the working gas is entering the turbine assembly. The secondary combustor assembly heats the working gas by injecting a combustible gas, or compressed air if the primary combustor produces a fuel rich working gas, into the elevated temperature working gas. This gas combusts and heats the working gas adjacent to the beginning of the turbine assembly. Because the working gas is not raised above 2500.degree. F. until it is about to enter the turbine assembly, the time during which NO.sub.x is formed is reduced.
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