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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)

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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

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

Jonas Sandsten, Hans Edner, and Sune Svanberg, "Gas visualization of industrial hydrocarbon emissions," Opt. Express 12, 1443-1451 (2004)

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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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