• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy >A simplified kinetic model based on a universal description for solid fuels pyrolysis: Theoretical derivation, experimental validation, and application demonstration
【24h】

A simplified kinetic model based on a universal description for solid fuels pyrolysis: Theoretical derivation, experimental validation, and application demonstration

机译：一种简化的动力学模型，基于固体燃料热解的通用描述：理论推导，实验验证和应用演示

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A kinetic model for the prediction of the conversion rate is crucial for research and development of biomass pyrolysis. The complexity of the existing kinetic studies and the diversity in pyrolysis kinetic data largely compromise the application of kinetic models. For the purpose of developing a generalized kinetic model, in this paper, we derive a universal description for all the common reaction mechanisms of solid fuels pyrolysis, among which the first-order reactions can be described as standardized general extreme value distribution. Based on the universal description, a simplified kinetic model with only one kinetic parameter is proposed. Then, we perform an experimental study of cellulose and poplar wood pyrolysis in order to validate the new model and to demonstrate its usefulness. The prediction results of the new model are very consistent with those from the conventional Arrhenius model and also agree well with the experimental data. Afterwards, the new model is applied to evaluate the kinetics for poplar wood pyrolysis, and comparisons between our model results and the commonly used Friedman method in terms of accuracy and applicability are shown. The new model also illustrates that the activation energies vary remarkably with the conversion degree and heating rate.(c) 2021 Elsevier Ltd. All rights reserved.
机译：用于预测转换率的动力学模型对于生物质热解的研究和开发至关重要。现有动力学研究的复杂性和热解动力学数据中的多样性在很大程度上损害了动力学模型的应用。为了开发广泛的动力学模型，在本文中，我们推导出对固体燃料热解的所有常见反应机制的通用描述，其中一流反应可以被描述为标准化的一般极值分布。基于通用描述，提出了一种仅具有一个动力学参数的简化动力学模型。然后，我们进行纤维素和杨树木质热解的实验研究，以验证新模型并证明其有用性。新模型的预测结果与来自传统Arhenius模型的预测结果非常一致，并且对实验数据同意。之后，应用新模型来评估杨树木质热解的动力学，并显示了我们的模型结果与常用弗里德曼方法在准确性和适用性方面的比较。新模型还说明激活能量随着转换程度和加热速率而显着差异。（c）2021 elestvier有限公司保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号