Abstract
Real-time monitoring of flue gas parameters in combustion processes is central to the optimization of the process efficiency and reduction of pollutants emission. We report simultaneous measurement of the average water vapor temperature and concentration over a 9m distance in a full-scale industrial boiler by broadband lidar employing a custom supercontinuum source covering the wavelengths of ro-vibrational absorption of water molecules at 1.2 - 1.55 μm. The measured average temperature and concentration are in excellent agreement with reference measurements. We also take advantage of the backscattering from the aerosol particles present in the boiler to map the water vapor concentration profile in the boiler up to a distance of 2.7m with a spatial resolution of 30 cm. Our results open novel perspectives for 3D profiling of temperature and gas concentration in industrial environments.
| Original language | English |
|---|---|
| Pages (from-to) | 42082-42089 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 29 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - Dec 2021 |
| Publication type | A1 Journal article-refereed |
Funding
Acknowledgments. A.S acknowledges the support from Finnish Cultural Foundation. The authors would like to express their sincere gratitude to Jaani Silvennoinen and Jari Perälä for organizing the measurement campapaign, and Tampereen Sähkölaitos for making these experiments possible by granting us access to their power plant.
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics