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Proceedings Paper

Evaluation of thermal cracker operation by use of an infrared camera
Author(s): Emil H. Edwin; Tore Arnesen; Gert-Inge Hugosson
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Paper Abstract

The Tube Metal Temperature (TMT) distribution in thermal cracker operation is a critical parameter in respect to tube material lifetime, furnace production capacity and product selectivity. The Agema 470 IR camera is used in the present work to monitor the TMT distribution and the factors that influence on the TMT distribution. Flame shape, burner performance, refractory condition and insulation are visualized by the use of 3.9 micrometers and 3.36 micrometers filters attached to the RI camera. The 'invisible' methane/hydrogen flame is visualized by using a 3.36 micrometers IR filter, which is in the region of a typical vibration frequency in the methane molecule. The measurement errors due to CO2 and H2O absorption in the flue gas are theoretical calculated and also observed during measurement. The thermovision camera has proven to be a useful supplement to furnace basic instrumentation and hand held pyrometers in order to verify the true state of the tubes, refractory and the burners during nominal operation and during decoking of thermal crackers. the present work was done early in 1995 with a rather large and heavy IR camera based on a mechanical scanner. The use of IR cameras in the petroleum industry has recently become even more interesting with the appearance of high resolution 'Handy Cam' cameras on the marked.

Paper Details

Date Published: 26 March 1998
PDF: 12 pages
Proc. SPIE 3361, Thermosense XX, (26 March 1998); doi: 10.1117/12.304722
Show Author Affiliations
Emil H. Edwin, Statoil R&D (Norway)
Tore Arnesen, Statoil R&D (Norway)
Gert-Inge Hugosson, BOREALIS (Sweden)

Published in SPIE Proceedings Vol. 3361:
Thermosense XX
John R. Snell Jr.; Richard Norman Wurzbach, Editor(s)

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