Title: Thermodynamic analysis of solid waste and energy consumption to reduce the effects of an electric arc furnace on the environment

Authors: Yildiz Koc; Huseyin Yagli; Enver Onur Ozdes; Ertugrul Baltacioglu; Ali Koc

Addresses: Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Iskenderun Technical University, 31200, Iskenderun, Hatay, Turkey ' Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Iskenderun Technical University, 31200, Iskenderun, Hatay, Turkey ' Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Iskenderun Technical University, 31200, Iskenderun, Hatay, Turkey ' Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Iskenderun Technical University, 31200, Iskenderun, Hatay, Turkey ' Department of Mechanical Engineering, Faculty of Engineering and Natural Sciences, Iskenderun Technical University, 31200, Iskenderun, Hatay, Turkey

Abstract: In this study, thermodynamic analysis of an EAF was made to reduce solid wastes and energy consumptions. Then, the slag formation, quicklime consumption and daily energy consumption of the EAF were optimised for different basicity ratios at constant silicium ratios (1.42%). Finally, the system is re-optimised for varying silicium ratios at constant basicity ratio (1.87). As a result of the study, it was seen that the energy consumption was reduced by about 153.26 GJ per day and the mass efficiency of the system was increased from 92.60% to 95.33%. This energy saving is equal to 1,987,016.11 kWh, which is equivalent to the nearly 1,152 tones CO₂ reduction per day.

Keywords: electric arc furnace; EAF; waste management; thermodynamic analysis; optimisation; chemical-based mass balance; energy saving.

DOI: 10.1504/IJGW.2019.103725

International Journal of Global Warming, 2019 Vol.19 No.3, pp.308 - 323

Received: 05 Jan 2019
Accepted: 31 May 2019
Published online: 25 Nov 2019 *

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