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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 7 — Apr. 5, 2004
  • pp: 1443–1451

Gas visualization of industrial hydrocarbon emissions

Jonas Sandsten, Hans Edner, and Sune Svanberg  »View Author Affiliations


Optics Express, Vol. 12, Issue 7, pp. 1443-1451 (2004)
http://dx.doi.org/10.1364/OPEX.12.001443


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Abstract

Gases leaking from a polyethene plant and a cracker plant were visualized with the gas-correlation imaging technique. Ethene escaping from flares due to incomplete or erratic combustion was monitored. A leakage at a high-pressure reactor tank could be found and visualized by scanning the camera system over the industrial site. The image processing methods rely on the information from three simultaneously captured images. A direct and a gas-filtered infrared image are recorded with a split-mirror telescope through a joint band-pass filter. The resulting path-integrated gas concentration image, derived from the two infrared images, is combined with a visible image of the scene. The gas-correlation technique also has the potential to estimate the flux in the gas plume by combining a wind vector map, derived by cross-correlating the images in time, with a calibrated gas path-integrated concentration image. The principles of the technique are outlined and its potential discussed.

© 2004 Optical Society of America

OCIS Codes
(040.3060) Detectors : Infrared
(110.3080) Imaging systems : Infrared imaging
(280.1120) Remote sensing and sensors : Air pollution monitoring
(300.6340) Spectroscopy : Spectroscopy, infrared

ToC Category:
Research Papers

History
Original Manuscript: February 25, 2004
Revised Manuscript: March 18, 2004
Published: April 5, 2004

Citation
Jonas Sandsten, Hans Edner, and Sune Svanberg, "Gas visualization of industrial hydrocarbon emissions," Opt. Express 12, 1443-1451 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-7-1443


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References

  1. J. Sandsten, H. Edner, and S. Svanberg, �??Gas imaging by infrared gas-correlation spectrometry,�?? Opt. Lett. 21, 1945 (1996). [CrossRef] [PubMed]
  2. J. Sandsten, P. Weibring, H. Edner, and S. Svanberg, �??Real-time gas-correlation imaging employing thermal background radiation,�?? Opt. Express 6, 92 (2000); <a href= "http://www.opticsexpress.org/abstract.cfm?URI=OPEX-6-4-92"> http://www.opticsexpress.org/abstract.cfm?URI=OPEX-6-4-92</a>. [CrossRef] [PubMed]
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  9. OSLO, Optics Software for Layout and Optimization, Ver 5.4, Sinclair Optics 2000.
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  11. Camera system specifications; Detector: MCT Sprite Stirling, 4�??13 µm, NET = 80 mK, Filterwheel with 5 positions; Visualised gases: Methane, Ethene, Ammonia, Nitrous Oxide; Ammonia: Detection limit 30 ppm �? m at �?T = 18 K with split-image telescope (present), Range and resolution: 10-1000 meters, 136 �? 136 pixels gas image combined with high resolution visible image; Frame rate: 15 images/s.

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