Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace
A fast sensor for simultaneous high temperature (above 800 K) diagnostics of nitrogen oxide (NO) concentration and gas temperature (T) based on the spectral fitting of low-resolution NO UV absorption near 226 nm was applied in pilot-scale LKAB’s Experimental Combustion Furnace (ECF). The experiments...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/15/7048 |
| _version_ | 1827686634542333952 |
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| author | Alexey Sepman Christian Fredriksson Yngve Ögren Henrik Wiinikka |
| author_facet | Alexey Sepman Christian Fredriksson Yngve Ögren Henrik Wiinikka |
| author_sort | Alexey Sepman |
| collection | DOAJ |
| description | A fast sensor for simultaneous high temperature (above 800 K) diagnostics of nitrogen oxide (NO) concentration and gas temperature (T) based on the spectral fitting of low-resolution NO UV absorption near 226 nm was applied in pilot-scale LKAB’s Experimental Combustion Furnace (ECF). The experiments were performed in plasma and/or fuel preheated air at temperatures up to 1550 K, which is about 200 K higher than the maximal temperature used for the validation of the developed UV NO sensor previously. The UV absorption NO and T measurements are compared with NO probe and temperature measurements via suction pyrometry and tuneable diode laser absorption (TDL) using H<sub>2</sub>O transitions at 1398 nm, respectively. The agreement between the NO UV and NO probe measurements was better than 15%. There is also a good agreement between the temperatures obtained using laser-based, optical, and suction pyrometer measurements. Comparison of the TDL H<sub>2</sub>O measurements with the calculated H<sub>2</sub>O concentrations demonstrated an excellent agreement and confirms the accuracy of TDL H<sub>2</sub>O measurements (better than 10%). The ability of the optical and laser techniques to resolve various variations in the process parameters is demonstrated. |
| first_indexed | 2024-03-10T09:18:38Z |
| format | Article |
| id | doaj.art-3b08757bc6974482aa1ebc4d1acaaf54 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:18:38Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-3b08757bc6974482aa1ebc4d1acaaf542023-11-22T05:23:36ZengMDPI AGApplied Sciences2076-34172021-07-011115704810.3390/app11157048Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale FurnaceAlexey Sepman0Christian Fredriksson1Yngve Ögren2Henrik Wiinikka3RISE Energy Technology Center, Box 726, SE-941 28 Piteå, SwedenLuossavaara-Kiirunavaara AB, Box 952, SE-971 28 Luleå, SwedenRISE Energy Technology Center, Box 726, SE-941 28 Piteå, SwedenRISE Energy Technology Center, Box 726, SE-941 28 Piteå, SwedenA fast sensor for simultaneous high temperature (above 800 K) diagnostics of nitrogen oxide (NO) concentration and gas temperature (T) based on the spectral fitting of low-resolution NO UV absorption near 226 nm was applied in pilot-scale LKAB’s Experimental Combustion Furnace (ECF). The experiments were performed in plasma and/or fuel preheated air at temperatures up to 1550 K, which is about 200 K higher than the maximal temperature used for the validation of the developed UV NO sensor previously. The UV absorption NO and T measurements are compared with NO probe and temperature measurements via suction pyrometry and tuneable diode laser absorption (TDL) using H<sub>2</sub>O transitions at 1398 nm, respectively. The agreement between the NO UV and NO probe measurements was better than 15%. There is also a good agreement between the temperatures obtained using laser-based, optical, and suction pyrometer measurements. Comparison of the TDL H<sub>2</sub>O measurements with the calculated H<sub>2</sub>O concentrations demonstrated an excellent agreement and confirms the accuracy of TDL H<sub>2</sub>O measurements (better than 10%). The ability of the optical and laser techniques to resolve various variations in the process parameters is demonstrated.https://www.mdpi.com/2076-3417/11/15/7048NO UV absorptiontemperatureTDLASpilot-scale furnace |
| spellingShingle | Alexey Sepman Christian Fredriksson Yngve Ögren Henrik Wiinikka Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace Applied Sciences NO UV absorption temperature TDLAS pilot-scale furnace |
| title | Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace |
| title_full | Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace |
| title_fullStr | Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace |
| title_full_unstemmed | Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace |
| title_short | Laser-Based, Optical, and Traditional Diagnostics of NO and Temperature in 400 kW Pilot-Scale Furnace |
| title_sort | laser based optical and traditional diagnostics of no and temperature in 400 kw pilot scale furnace |
| topic | NO UV absorption temperature TDLAS pilot-scale furnace |
| url | https://www.mdpi.com/2076-3417/11/15/7048 |
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