化工学报2016，Vol.67Issue(10)：4468-4476,9.DOI:10.11949/j.issn.0438-1157.20160532
O2/CO2气氛下多种碳基随机孔模型的建立
Establishment of various char-RPM under O2/CO2 atmosphere
摘要
Abstract
The traditional random pore model is based on a simple one step reaction, which is not suitable to describe the complex gas-solid reaction of coke particles in O2/CO2 atmosphere. Based on the various carbons in coke and the characteristics of single char combustion in O2/CO2 atmosphere, the various char-RPM and the model of pore structure under the complex gas-solid reaction were established. The combustion process of char particles with a diameter of 100μm in O2/CO2 atmosphere was simulated, and the results were calculated and analyzed by FORTRAN. The research showed that the particles in the early stage of combustion had a competitive effect and the gas concentration in the pore was fluctuated. The reason for fluctuation was the competition between chemical reaction and physical diffusion, which can be improved by increasing the O2 concentration or decreasing the particle size. The various char-RPM proposed in this work had a good adaptability to characterizing the combustion characteristics of char particles in O2/CO2 atmosphere.关键词
O2/CO2气氛/多孔介质/随机孔模型/单颗粒焦炭燃烧/传质/介尺度/数值模拟Key words
O2/CO2 atmosphere/porous media/random pore model/single particle char combustion/mass transfer/mesoscale/numerical simulation分类
化学化工引用本文复制引用
曲践,李保卫,郑坤灿,武文斐..O2/CO2气氛下多种碳基随机孔模型的建立[J].化工学报,2016,67(10):4468-4476,9.基金项目
内蒙古应用技术研发与开发基金资助项目（20130310）；内蒙古高校创新团队研究计划资助项目（NMGIRT1406）。 （）
