8 August 2001 Optoelectronic system of online measurements of unburned carbon in coal fly ash
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Proceedings Volume 4516, Optoelectronic and Electronic Sensors IV; (2001) https://doi.org/10.1117/12.435935
Event: Optoelectronic and Electronic Sensors IV, 2000, Gliwice, Poland
Abstract
Carbon-in-ash level is an important consideration for combustion efficiency as well as ash marketing. The optoelectronic analyzing system for on-line determination and monitoring of the u burned carbon content of ash samples is presented. The apparatus operates on the principle that carbon content is proportional to the reflectance of IR light. Ash samples are collected iso kinetically from the flue gas duct and placed in a sample tube with a flat glass bottom. The same is then exposed to a light. The reflectance intensity is used by the system's computer to determine residual carbon content from correlation curves. The sample is then air purged back to the duct or to the attached sample canister to enable laboratory check analysis. The total cycle time takes between 5 and 10 minutes. Real time result of carbon content with accuracy 0.3-0.7 percent are reported and can be used for boiler controlling.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Janusz Golas, Janusz Golas, Henryk Jankowski, Henryk Jankowski, Bogdan Niewczas, Bogdan Niewczas, Janusz Piechna, Janusz Piechna, Antoni Skiba, Antoni Skiba, Wojciech Szkutnik, Wojciech Szkutnik, Zdzislaw Piotr Szkutnik, Zdzislaw Piotr Szkutnik, Ryszarda Wartak, Ryszarda Wartak, Cezary Worek, Cezary Worek, } "Optoelectronic system of online measurements of unburned carbon in coal fly ash", Proc. SPIE 4516, Optoelectronic and Electronic Sensors IV, (8 August 2001); doi: 10.1117/12.435935; https://doi.org/10.1117/12.435935
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