ABSTRACT

Co-combustion characteristic was investigated in detail to investigate the combustion of coal/olive bagasse and their different ratios blends (10%, 25%, 50%, and 75%) using the thermogravimetric analysis (TG) and the differential thermogravimetric analysis (DTG). Ignition and peak temperatures and other combustion characteristics for the samples were determined and correlated with the results obtained depending on the percentages of blends. As a results of the evaluation of all these parameters, it was thought that 25% olive bagasse and 75% coal blend were the most suitable value. In the final part of the work, the kinetic analysis of the samples was carried out by the Coats–Redfern method and the activation energies were determined. The activation energies of the coal/olive bagasse and their blends were assessed and compared. The calculated activation energy values for the combustion reactions of the samples ranged were found to be between 11.44 kJ/mol and 21.67 kJ/mol. As the blend percentage increased the olive bagasse showed a decreasing trend according to the ignition and peak temperature of the coal. It was determined that coal had more difficult combustible behavior than olive bagasse. In addition, a decrease in calorific values and an increase in comprehensive combustion index (CCI) value were observed as the percentage of olive bagasse blend increased.

摘要

使用热重分析 (TG) 和差示热重分析 (DTG) 详细研究了共燃特性，以研究煤/橄榄甘蔗渣及其不同比例混合物（10%、25%、50% 和 75%）的燃烧). 确定了样品的点火和峰值温度以及其他燃烧特性，并与根据混合物的百分比获得的结果相关联。作为对所有这些参数的评估结果，我们认为 25% 的橄榄甘蔗渣和 75% 的混煤是最合适的值。在工作的最后部分，通过 Coats-Redfern 方法对样品进行了动力学分析，并确定了活化能。评估和比较了煤/橄榄甘蔗渣及其混合物的活化能。发现样品燃烧反应的计算活化能值介于 11.44 kJ/mol 和 21.67 kJ/mol 之间。随着混合百分比的增加，根据煤的着火点和峰值温度，橄榄甘蔗渣呈下降趋势。确定煤比橄榄甘蔗渣更难燃烧。此外，随着橄榄甘蔗渣混合物百分比的增加，观察到热值降低和综合燃烧指数 (CCI) 值增加。确定煤比橄榄甘蔗渣更难燃烧。此外，随着橄榄甘蔗渣混合物百分比的增加，观察到热值降低和综合燃烧指数 (CCI) 值增加。确定煤比橄榄甘蔗渣更难燃烧。此外，随着橄榄甘蔗渣混合物百分比的增加，观察到热值降低和综合燃烧指数 (CCI) 值增加。