Uttarakhand has the maximum potential of pine of about 20 lakh tonnes/year including reserved forests and van panchayat which makes pine needle an abundant resource. The analysis of the pine needles reveals it a potential biomass feedstock for gasification to produce electricity. This manuscript deals with the combustion study of Pine needles (Pinusroxburghii) biomass using a thermogravimetric analyzer to investigate the thermal degradation behavior and kinetic parameters. The pine needles were heated in the presence of air at four different heating rates 5, 10, 25 and 50 °C/min, and the degradation phenomenon was studied. From the proximate and ultimate analysis of pine needles, it was observed that the biomass could be a potential feedstock for gasification. The TG-DTG curves revealed that the main decomposition was between 190 and 450 °C with the release of 80–84% volatiles. It was observed that as the heating rate increases, the maximum decomposition temperature also increases and the peak shifts to the right. The obtained thermal data were used to calculate the kinetic parameters using Kissinger–Akharia–Sunose, Ozawa-Flynn-Wall, Friedman and Kissinger. The average values obtained from the above methods are 190.74, 190.75, 199.48 and 172 kJ/mol and 2.749 × 1022, 5.13 × 1022, 4.21 × 1021 and 4.14 × 106/min, respectively. The model fitting method and Coats–Redfern method were used to determine the kinetic triplet (A, E and n). The above model-free methods and model fitting methods predicts the progress of gasification at different positions along the reactor. Considering proximate analysis and heating value, pine needles could be considered as a potential feedstock for energy production through gasification process. The estimated results help as a source to understand the thermal degradation of biomass during the gasification process and be used to design the systems.

中文翻译：

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Pinusroxburghii 的表征、热和动力学分析

北阿坎德邦的最大松树潜力约为 200 万吨/年，包括保留林和 van panchayat，这使得松针成为一种丰富的资源。对松针的分析表明，它是一种用于气化发电的潜在生物质原料。本手稿涉及使用热重分析仪研究松针 (Pinusroxburghii) 生物质的燃烧研究，以研究热降解行为和动力学参数。在空气存在下以 5、10、25 和 50 °C/min 四种不同的加热速率加热松针，并研究降解现象。从松针的近端和最终分析中，观察到生物质可能是气化的潜在原料。TG-DTG 曲线显示，主要分解温度在 190 至 450 °C 之间，释放出 80-84% 的挥发物。观察到随着加热速率的增加，最大分解温度也增加并且峰向右移动。获得的热数据用于计算使用 Kissinger-Akharia-Sunose、Ozawa-Flynn-Wall、Friedman 和 Kissinger 的动力学参数。上述方法得到的平均值分别为190.74、190.75、199.48和172 kJ/mol和2.749×1022、5.13×1022、4.21×1021和4.14×106/min。模型拟合方法和 Coats-Redfern 方法用于确定动力学三元组（A、E 和 n）。上述无模型方法和模型拟合方法可以预测沿反应器不同位置的气化进程。考虑到近似分析和热值，松针可以被视为通过气化过程生产能源的潜在原料。估计结果有助于了解气化过程中生物质的热降解，并用于设计系统。