On-line Analysis of Stack Gas Composition by a Low Resolution FT-IR Gas Analyzer

Jaakkola, Petri T.; Vahlman, Tuula A.; Roos, Aappo A.; Saarinen, Pekka E.; Kauppinen, Jyrki K.

On-line Analysis of Stack Gas Composition by a Low Resolution FT-IR Gas Analyzer

1998

Jaakkola, Petri T. | Vahlman, Tuula A. | Roos, Aappo A. | Saarinen, Pekka E. | Kauppinen, Jyrki K.

Stack gases of wood and oil burning boilers were analyzed by a low resolution FT-IR gas analyzer. Concentrations of carbon dioxide (CO₂), carbon monoxide (CO), nitric oxide (NO), nitrogen dioxide (NO₂), nitrous oxide (N₂O), hydrogen cyanide (HCN), sulfur dioxide (SO₂), methane (CH₄), and water vapor (H₂O) were predicted in real time by multicomponent analysis. Detection limits, linearity, analysis accuracy and long time repeatability were experimentally determined for selected gas components. Applicability of the measurement method was demonstrated by analysis of stack gas mixtures of known concentrations. The results indicate that all the primary stack gas components can be measured by the low resolution FT-IR gas analyzer with comparable results to single component measurement methods.

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