Automatic NOx control for a gas turbine

Details Automatic NOx control for a gas turbine Automatic NOx control for a gas turbine

1992-09-15

1994-05-03

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 393, F02C 330

Patent

active

053076192

ABSTRACT:
A gas turbine power plant has coolant injected into the combustors in order to reduce the level of nitrogen oxide produced by the combustion of natural gas fuel and/or oil. A control system controls injection of coolant into the combustors in order to reduce NOx emissions, while improving turbine cycle efficiency and avoiding the possibility of over-injection of coolant to the point of flame-out in the combustor. PID controllers are used to provide percentage error bias in the control system, whereby adjustment of coolant injection follows turbine load in a manner that increases turbine efficiency.

REFERENCES:
patent: 4160362 (1979-07-01), Martens et al.
patent: 4733527 (1988-03-01), Kidd

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