Guangdong Provincial Key Laboratory of Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China.
Guangdong Provincial Key Laboratory of Distributed Energy Systems, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China.
Bioresour Technol. 2020 May;304:122991. doi: 10.1016/j.biortech.2020.122991. Epub 2020 Feb 11.
In this work, the pyrolysis behavior of lignite, Chinese herb residues (CHR) and their blends were explored by thermogravimetric analysis. The co-pyrolysis improved the pyrolysis characteristic of lignite, leading to an increment of index D. Analysis results showed that 30%-50% of CHR add ratio was the appropriate choice for co-pyrolysis with lignite. It was clarified that synergetic effects between lignite with CHR occurred during the co-pyrolysis treatment. And the promoting effects were dominated at 240 °C to 310 °C, while it turned to inhibiting effects at 315 °C to 355 °C. The pyrolysis kinetic evolution was adapted by a new general distributed activation energy model with four pseudo-components. The simulation results demonstrated an excellent match with the adjusted coefficients R over 99.97%. In addition, G-DAEM further considered A-E kinetic compensatory effect. The outcomes enriched the applicability of this model in thermal process of other fuels.
在这项工作中，通过热重分析研究了褐煤、中药渣（CHR）及其混合物的热解行为。共热解改善了褐煤的热解特性，导致指数 D 增加。分析结果表明，褐煤与 CHR 的共热解适宜的添加比例为 30%-50%。研究结果表明，在共热解过程中褐煤与 CHR 之间存在协同效应。促进作用主要发生在 240°C 至 310°C，而在 315°C 至 355°C 时则转为抑制作用。采用新的四元伪组分通用分布活化能模型对热解动力学演变进行了拟合。模拟结果表明，调整系数 R 超过 99.97%，具有很好的拟合度。此外，G-DAEM 进一步考虑了 A-E 动力学补偿效应。这些结果丰富了该模型在其他燃料热过程中的适用性。
