文献类型：期刊文献

中文题名：撞击流气化炉内颗粒停留时间分布的随机模拟

英文题名：Stochastic modeling of particle residence time distribution in impinging-streams gasifier

作者：倪建军[1];郭庆华[1];梁钦锋[1];于遵宏[1];于广锁[1]

机构：[1]华东理工大学资源与环境工程学院,煤气化教育部重点实验室,上海200237

年份：2008

卷号：59

期号：3

起止页码：567

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20081511196199);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家重点基础研究发展计划项目(2004CB217703);教育部新世纪优秀人才支持计划项目(NCET-06-0416);上海市教委曙光计划项目(06SG34)~~

语种：中文

中文关键词：停留时间分布;颗粒流;马尔可夫链;气化炉

外文关键词：residence time distribution; particle flow; Markov chain; gasifier

摘要：根据多喷嘴对置式气化炉流场测试,将气化炉划分为若干区域,运用时间离散、状态离散的马尔可夫链随机模型,模拟了气化炉内颗粒相的停留时间分布(RTD)。当颗粒在撞击区和射流区间的回流比为0.5,向下撞击流股区和管流区为平推流模型,其他区域按全混流模型处理时,模拟值与实验值吻合较好。随着进料流量的增大,平均停留时间减小,量纲1方差减小;随着回流比的增加,平均停留时间增大;气固两相平均停留时间接近,但RTD存在一定差异。
According to the flow field of opposed multi-burner gasifier, the gasifier was divided into several regions. The particle residence time distribution （RTD） in the gasifier was investigated with a stochastic model based on discrete time and state Markov chain. The results showed that the calculated results could give a reasonable fit to the experimental data when reflux ratio region was 0.5, the tube stream region and the downward impin flow reactor （PFR）, others were considered as continuous stirre time and dimensionless variance decreased with the increase o increased with the increase of reflux ratio. Mean residence time solid phase. etween jet stream region and impinging ing-stream region were regarded as plug tank reactor （CSTR） . Mean residence flow rate, while mean residence time was similar between gaseous phase and