Real-time O2 measurement in a cement kiln with a TDLAS analyzer

Yanwei Gao; Yujun Zhang; Dong Chen; Ying He; Ku You; Chen Chen; Wenqing Liu

doi:10.1117/12.2247141

19 October 2016 Real-time O₂ measurement in a cement kiln with a TDLAS analyzer

Yanwei Gao, Yujun Zhang, Dong Chen, Ying He, Ku You, Chen Chen, Wenqing Liu

Proceedings Volume 10155, Optical Measurement Technology and Instrumentation; 101552R (2016) https://doi.org/10.1117/12.2247141
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

Abstract

Cement kilns are the main source of atmospheric pollutants, and will consume large amounts of fuel. In order to reduce the emissions of gas pollutants and saving fuel, the combustion process inside the furnace is needed to monitor in real time. Oxygen is the main combustion-supporting gas, monitoring the oxygen concentration inside the furnace can be implemented to combustion control and optimize combustion efficiency. We developed a TDLAS analyzer for real-time oxygen concentration measurement to achieve fuel saving and gas pollutant emission reduction. We realized temperature correction algorithm using the relationship between high-temperature oxygen line strength and measurement temperature, improving the measurement accuracy of the oxygen concentration at different temperatures. We tested the analyzer and the test results show that detection limit was 0.1%, analyzer can be achieved accurate measurement of oxygen concentration, the measured oxygen concentration was 5-8%. Results were true and reliable indicated that the oxygen measuring system can be developed to achieve long-term stability operation in high-temperature environments oxygen concentration measurement.

Citation Download Citation

Yanwei Gao, Yujun Zhang, Dong Chen, Ying He, Ku You, Chen Chen, and Wenqing Liu "Real-time O₂ measurement in a cement kiln with a TDLAS analyzer", Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 101552R (19 October 2016); https://doi.org/10.1117/12.2247141

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