Abstract:
A method and apparatus for optimizing boilers with high flue gas recirculation rate based with laser based diagnostic technology. A tunable diode laser beam (203) is emitted from a launcher (202), is altered by the absorption spectra of the gas species that it intersects, and encounters a receiver (204). The.signal is processed, then the information is used to modulate the flowrate of hydrogen blended fuel or oxygen enriched air into the burner (110).
Abstract:
Systems and methods for exhaust gas recirculation in which at least a desired effective oxygen concentration is maintained for stable combustion at increased recirculation rates. Oxygen-enriched gas (210o) is injected into the recirculated exhaust gas (210r) to achieve the desired effective oxygen concentration.