A Remote Sensing Technique For Combustion Gas Temperature Measurement In Black Liquor Recovery Boilers

S R Charagundla; H G Semerjian

doi:10.1117/12.938804

23 October 1986 A Remote Sensing Technique For Combustion Gas Temperature Measurement In Black Liquor Recovery Boilers

S R Charagundla, H G Semerjian

Proceedings Volume 0665, Optical Techniques for Industrial Inspection; (1986) https://doi.org/10.1117/12.938804
Event: 1986 Quebec Symposium, 1986, Quebec City, Canada

Abstract

A remote sensing technique, based on the principles of emission spectroscopy, is being developed for temperature measurements in black liquor recovery boilers. Several tests have been carried out, both in the laboratory and at a number of recovery boilers, to characterize the emission spectra in the wavelength range of 300 nm to 800 nm. These tests have pointed out the potential for temperature measurements using the line intensity ratio technique based on a pair of emission lines at 404.4 nm and 766.5 nm observed in the recovery boiler combustion zone; these emission lines are due to potassium, a common constituent found in all the black liquors. Accordingly, a fiber optics based four-color system has been developed. This in-situ, nonintrusive temperature measurement technique, together with some of the more recent results, is described in this paper.

Citation Download Citation

S R Charagundla and H G Semerjian "A Remote Sensing Technique For Combustion Gas Temperature Measurement In Black Liquor Recovery Boilers", Proc. SPIE 0665, Optical Techniques for Industrial Inspection, (23 October 1986); https://doi.org/10.1117/12.938804

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