Method and apparatus for optimizing high fgr rate combustion with laser-based diagnostic technology
OwnerTailai Hu, Pavol Pranda +1inventors
InventorsTailai Hu, Pavol Pranda, William A. Von Drasek
Life of this patent
Estimating the term…
Abstract
A method and apparatus for optimizing boilers with high flue gas recirculation rate based with laser based diagnostic technology. A tunable diode laser is emitted from a launcher, is altered by the absorption spectra of the gas species that it intersects, and encounters a receiver. The signal is processed, then the information is used to modulate the flowrate of hydrogen blended fuel or oxygen enriched air into the burner.
Claims19
An optimized high flue gas recirculation rate combustion diagnostic apparatus comprising:
- a) a combustion zone comprising gas species to be measured, wherein said combustion zone comprises burners;
- b) a launcher for emitting a tunable diode laser beam at a sequence of wavelengths that correspond to an absorption spectra of said gas species;
- c) a receiver for receiving said tunable diode laser beam, and for generating an output signal corresponding to a temperature and/or a degree of absorption encountered;
- and
- d) a control system for receiving said output signal, wherein said control system thereby regulates the inlet flow of fuel or oxidant to said combustion zone.
An optimized high flue gas recirculation rate combustion diagnostic method comprising:
- a) providing a combustion zone comprising gas species to be measured, wherein said combustion zone comprises burners;
- b) emitting a tunable diode laser beam from a launcher, wherein said tunable diode laser beam has a sequence of wavelengths that correspond to an absorption spectra of said gas species;
- c) receiving said tunable diode laser beam in a receiver, and generating an output signal corresponding to a temperature and/or a degree of absorption encountered;
- and
- d) regulating the inlet flow of fuel or oxidant into said combustion zone with a control system for receiving said output signal.
Dependencies are inferred from the claim text.