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.

中文翻译：

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通过田口正交设计优化褐煤无烟燃料生产

摘要

在本研究中，Konya Ermenek 褐煤在不同条件下在 N _{2 中}进行热解气体流量。温度（400、500、600 和 700°C）、加热速率（5、10、15 和 20°C/min）、气体流量（100、150、200 和 250 cc/min）和停留时间（45、60、75 和 90 分钟）被选为实验参数。田口实验设计用于优化热解参数。根据可用变量确定正交阵列设计方案为L16。由于该研究旨在获得无烟燃料，因此考虑了结果的炭（固体）产率 (CY)。并计算每个测试条件的信噪比 (S/N)。实验结果表明，在试验 1 中获得了最大的 CY 和 S/N 比。作为在优化条件下进行的热解试验的结果，确定 S/N 比为 35.21 CY 为 57.63%。此外，方差分析 (ANOVA) 应用于测试结果，并确定每个因素对炭产量的百分比贡献。使用优化条件实现的最大焦炭产量为：热解温度为 400°C，停留时间为 75 分钟，加热速率为 20°C/分钟，N 的流速为₂ 100 毫升/分钟。