Assessing Flare Combustion Efficiency using Imaging Fourier Transform Spectroscopy
| Autor: | Kyle J. Daun, S. Talebi-Moghaddam, M Zamani, Rodrigo Brenner Miguel, C Turcotte |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Stripping (chemistry)
02 engineering and technology Computational fluid dynamics Combustion 7. Clean energy 01 natural sciences Fourier transform spectroscopy Methane law.invention 010309 optics chemistry.chemical_compound law 0103 physical sciences Spectroscopy Radiation business.industry Turbulence Mechanics 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics chemistry 13. Climate action Environmental science 0210 nano-technology business Flare Crosswind |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 273:107835 |
| ISSN: | 0022-4073 |
| DOI: | 10.1016/j.jqsrt.2021.107835 |
| Popis: | Flaring plays a critical role in reducing the environmental impact of upstream oil and gas processing by converting methane and other gaseous hydrocarbons into CO2, which has a lower global warming potential. This process is highly efficient under ideal conditions but efficiency may be significantly lower under certain scenarios such as fuel stripping under crosswind and emission of volatile organic compounds and unburned fuels due to over-aeration or over-steaming in assisted flares. This study assesses the potential of using imaging Fourier transform spectrometers (IFTSs) to directly measure combustion efficiency by combining species column densities estimated from a spectroscopic model with intensity-weighted velocities found using an optical flow model. Simulated measurements using a computational fluid dynamics (CFD)-large eddy simulation of a flare in a crosswind are used to establish the technique's viability, followed by experimental measurements on a heated gas vent to validate the optical flow model. Finally, preliminary measurements are carried out on a laboratory-scale steam- and air-assisted flare. While the simulated measurements and heated vent experiments support the feasibility of this approach, experimentally-derived spectra from the lab-scale flare were contaminated with artifacts attributed to turbulent fluctuations, which complicates the quantitative interpretation of the IFTS data. |
| Databáze: | OpenAIRE |
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