摘要
关键参数的科学设定对循环流化床反应器的稳定、高效运行至关重要,是反应器性能优化的重要基础。本文应用数值模拟技术对循环流化床反应器进行了三维全回路仿真,并将仿真结果与试验数据进行了对比分析。在此基础上,针对关键参数(粉煤粒径、氧气速率和床料藏量)对循环流化床反应器内颗粒体积分数与温度的综合效应进行了分析。应用响应面分析法,总结了各因素间的交互作用与目标变量间的相关性。结果表明:氧气速率对反应器内颗粒体积分数和温度均有显著影响;粉煤粒径仅对颗粒体积分数有显著影响;床料藏量对颗粒体积分数有显著影响,对温度影响较弱;粉煤粒径与氧气速率的交互作用对反应器颗粒体积分数影响较为显著。在实际的工程应用中,可考虑调整氧气速率和改变粉煤粒径以提高循环流化床反应器物料循环效率。此外,可通过调整氧气速率来控制循环流化床反应器内的温度变化。
The scientific setting of key parameters is crucial to the stable and efficient operation of circulating fluidized bed reactor,and is an important basis for reactor performance optimization.In this paper,A three-dimensional full-loop simulation of the circulating fluidized bed reactor is applied to numerical simulation technology,and the simulation results are compared and analyzed with the experimental data.On this basis,a comprehensive analysis of the particle volume fraction and temperature effect in the circulating fluidized bed reactor was carried out for the key parameters(pulverized coal particle size,oxygen rate and material collection).Response surface analysis was applied to summarize the correlations between the interactions of the factors and the target variables.The results indicate that:oxygen rate has a significant effect on both particle volume fraction and temperature in the reactor;pulverized coal particle size only has a significant effect on particle volume fraction;material collection has a significant effect on particle volume fraction and a weak effect on temperature;the interaction between pulverized coal particle size and oxygen rate has a more significant effect on particle volume fraction in the reactor.In practical engineering applications,adjustment of oxygen rate and change of pulverized coal particle size can be considered to improve the circulating fluidized bed reactor material circulation efficiency.In addition,the temperature variation in the circulating fluidized bed reactor can be controlled by adjusting the oxygen rate.
作者
张世豪
张进春
ZHANG Shihao;ZHANG Jinchun(Research Center for Energy Economy,School of Business Administration,Henan Polytechnic University,Jiaozuo 454000,China;Department of Industrial Engineering,School of Business Administration,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《洁净煤技术》
CAS
CSCD
北大核心
2024年第S01期298-309,共12页
Clean Coal Technology
基金
河南省重点研发与科技专项(科技攻关)资助项目(222102320412)
河南省自然科学基金资助项目(232300420083)
关键词
关键参数
循环流化床
全回路仿真
颗粒体积分数
温度效应
响应面分析
key process parameters
circulating fluidized bed
full-loop simulation
particle volume fraction
temperature effect
response surface analysis
