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Numerical Simulation of Co-Combustion of Pulverized Coal and Different Proportions of Refused Derived Fuel in TTF Precalciner

Jiekun Zhu, Hongtao Kao*

College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China

* Corresponding Author: Hongtao Kao. Email: email

Journal of Renewable Materials 2021, 9(7), 1329-1343. https://doi.org/10.32604/jrm.2021.015079

Abstract

Based on the theory of computational fluid dynamics (CFD), pulverized coal combustion alone, and the co-combustion of pulverized coal and refuse-derived fuel (RDF) in a Trinal-sprayed calciner (TTF) precalciner were simulated. The results revealed that when coal was used as a single fuel, the velocity field in the precalciner had good symmetry, and formed three spray effects and multiple recirculation zones. The main combustion zone was distributed in the lower tertiary air and pulverized coal area, and the highest temperature reached up to 1,500 K. According to the simulation results, the predicted decomposing rate of raw meal was 90.12%, which is in good agreement with the actual measured result. In addition, with the increase in RDF content, the average temperature of the furnace, the decomposition rate of the raw meal, and the NOx concentration all exhibited a downward trend. Under the condition of ensuring the normal operation of the precalciner, blending with 20% RDF is the most reasonable strategy, and the NOx emissions decreased by approximately 16%.

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APA Style
Zhu, J., Kao, H. (2021). Numerical simulation of co-combustion of pulverized coal and different proportions of refused derived fuel in TTF precalciner. Journal of Renewable Materials, 9(7), 1329-1343. https://doi.org/10.32604/jrm.2021.015079
Vancouver Style
Zhu J, Kao H. Numerical simulation of co-combustion of pulverized coal and different proportions of refused derived fuel in TTF precalciner. J Renew Mater. 2021;9(7):1329-1343 https://doi.org/10.32604/jrm.2021.015079
IEEE Style
J. Zhu and H. Kao, "Numerical Simulation of Co-Combustion of Pulverized Coal and Different Proportions of Refused Derived Fuel in TTF Precalciner," J. Renew. Mater., vol. 9, no. 7, pp. 1329-1343. 2021. https://doi.org/10.32604/jrm.2021.015079



cc Copyright © 2021 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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