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Optimization of Smokeless Fuel Production from Lignite by Taguchi Orthogonal Design

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Abstract

In this study, the pyrolysis of Konya Ermenek lignite was carried out under different conditions in N2 gas flow.Temperature (400, 500, 600 and 700°C), heating rate (5, 10, 15 and 20°C/min), flow rates of gas (100, 150, 200 and 250 cc/min) and residence time (45, 60, 75 and 90 min) were selected as experimental parameters. Taguchi experimental design was used to optimize pyrolysis parameters.The orthogonal array design plan was determined as L16 according to the available variables. Since the study aims to obtain smokeless fuel, char (solid) yields (CY) from the results are taken into consideration. And signal/noise (S/N) ratios of each test condition were calculated. As a result of the experiments, it was seen that the maximum CY and S/N ratio was obtained in Test No 1. As a result of the pyrolysis tests performed under the optimization conditions, it was determined that the S/N ratio was 35.21 and the CY was 57.63%. In addition, variance analysis (ANOVA) was applied to the test results and the percentage contributions of each factor for the char yields were determined. The maximum char yield was achieved using the optimized conditions were: pyrolysis temperature of 400°C, residence time 75 min, heating rate 20°C/min and flow rate of N2 100 cc/min.

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ACKNOWLEDGMENTS

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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  1. Department of Mining Technology, Malatya Turgut Özal University, Malatya, Turkey

    Aydan Aksoğan Korkmaz

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  1. Aydan Aksoğan Korkmaz
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Korkmaz, A.A. Optimization of Smokeless Fuel Production from Lignite by Taguchi Orthogonal Design. Solid Fuel Chem. 55, 444–449 (2021). https://doi.org/10.3103/S0361521921060082

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