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Energies 2018, 11(2), 337; doi:10.3390/en11020337

NOx and SO2 Emissions during Co-Combustion of RDF and Anthracite in the Environment of Precalciner

1,2,* and 1,2
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Research and Test Center of Materials, Wuhan University of Technology, Wuhan 430070, China
Author to whom correspondence should be addressed.
Received: 27 December 2017 / Revised: 30 January 2018 / Accepted: 30 January 2018 / Published: 2 February 2018
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Based on the temperature and O2 concentration in the cement precalciner, co-combustion of anthracite and Refuse Derived Fuel (RDF) were investigated using a thermogravimetric analyzer (TGA) and a double furnaces reactor. Both the TGA and double furnaces reactor results indicated that the co-combustion characteristics were the linear additive effect in the devolatilization stage, while it was the synergistic effect in the char combustion stage. During co-combustion, at 900 °C, NOx released rapidly during the devolatilization stage, but in the char combustion stage the NOx formation were inhibited; at 800 °C, a large amount of CO formed, which could reduce the NOx. In general, at 900 °C and 800 °C, the application of co-combustion could lower the NOx emission yield and lower the NOx conversion. By combining the combustion characteristics with the XRD results, it was indicated that during co-combustion, at 800 °C, the SO2 formation reaction was inhibited, and the SO2 yield and conversion were quite low. View Full-Text
Keywords: NOx; SO2; co-combustion; RDF; anthracite; precalciner NOx; SO2; co-combustion; RDF; anthracite; precalciner

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Chen, X.; Xie, J.; Mei, S.; He, F. NOx and SO2 Emissions during Co-Combustion of RDF and Anthracite in the Environment of Precalciner. Energies 2018, 11, 337.

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