Research on New Method of Flue Gas Composition Detection for Utility Boiler
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Abstract
The detection of flue gas in the tail of the utility boiler is the important mean to guide the efficient production and low carbon emission for boiler, however, the accurate measurement of flue gas composition has been a thorny problem resulting from the special measurement environment with high temperature and complex composition. The quantitative relationship between light absorbance and gas concentration was deduced by calculus, and a new method for the measurement of gas concentration in a nonuniform medium environment such as boiler flue gas was obtained by in-depth study for the principle of laser measurement and tunable diode laser absorption spectroscopy (TDLAS). The actual measurement results in a boiler show that the laser measurement method has the advantages of high precision, safety and reliablity, which has a good application prospect.
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