• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Simulation of coal pressurized pyrolysis process in an industrial-scale spout-fluid bed reactor
【24h】

Simulation of coal pressurized pyrolysis process in an industrial-scale spout-fluid bed reactor

机译：工业规模喷液床反应器中煤加压热解过程的仿真

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 three-dimensional Eulerian-Lagrangian model, facilitated with multiphase particle-in-cell (MP-PIC) method, was developed to simulate gas-solid flow and pyrolysis characteristics of coal (with the capacity of 500 thousand tons per year) in an industrial-scale spout-fluid bed reactor (H = 16.6 m and D = 3.1 m), aiming at providing guidance for industrial application of pressurized grade conversion of coal. The performance of the reactor and the effects of operating parameters such as coal feeding rate, semicoke to coal ratio, and particle sizes were numerically investigated. It was found that the flow pattern in this case is a "jet in the fluidized bed with bubbling". The raise of pressure has a positive impact on the spouting structure and the flow uniformly. The increase of the semi-coke to coal ratio is beneficial to the coal pyrolysis, but the improvement of the pyrolysis is limited and the number of particles in the reactor will be sharply increased. With the increase of particle sizes, the flow pattern in the pyrolysis reactor tends to be stable while the mixing effectiveness is getting worse. It is suggested that the particle size of the material should range within 0-6 mm. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
机译：开发了一种三维Eulerian-Lagrangian模型，促进了多相粒子细胞（MP-PIC）方法，以模拟煤的气体固体流动和热解特性（每年500万吨）工业规模的喷口流体床反应器（H = 16.6米和D = 3.1米），旨在为工业应用加压级转化的工业应用指导。反应器的性能和操作参数如煤饲料速率，半径到煤比和颗粒尺寸的性能进行了数值研究。发现这种情况下的流动模式是“流化床中的喷射”。压力的升高对喷口结构具有积极的影响，并且均匀流动。半焦炭与煤比的增加有利于煤热解，但热解的改善是有限的，并且反应器中的颗粒的数量将急剧增加。随着粒径的增加，热解反应器中的流动模式趋于稳定，而混合效果变得越来越差。建议材料的粒度应在0-6mm内的范围内。 （c）2019年日本粉末技术学会。由elsevier b.v发表。和日本粉末科技会。版权所有。

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