Abstract
We report real-time monitoring of coarse aerosol particle distribution in a 9m wide full-scale industrial boiler using a broadband supercontinuum lidar. The technique utilizes the light backscattered from the aerosol to map the extinction profile using the Klett inversion method, with measured extinction values of 0.04 - 0.2m-1 across the furnace. The technique further exploits differential absorption of water molecules in the 1.25 - 1.5 μm region to map the water vapor concentration profile in the furnace up to a distance of 3.9m with a spatial resolution of 30 cm. We also take advantage of the strong reflection from the boiler back-wall to simultaneously measure the average water vapor temperature and concentration in the boiler in good agreement with reference readings from the boiler. Our results open novel perspectives for versatile 3D profiling of flue gas parameters and other industrial process analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 23889-23896 |
| Number of pages | 8 |
| Journal | Optics Express |
| Volume | 31 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 17 Jul 2023 |
| Publication type | A1 Journal article-refereed |
Funding
Acknowledgments. A.S acknowledges the support from Finnish Foundation for Technology Promotion. The authors are sincerely grateful to Jaani Silvennoinen and Jari Perälä for organizing the measurement campapaign, and Tampereen Sähkölaitos for making their power plant accessible and the hospitality.
Publication forum classification
- Publication forum level 1
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics