关键工艺参数对CFB颗粒体积分数与温度综合效应分析  

Analysis of the Comprehensive Effect of Key Process Parameters on CFB Particle Volume Fraction and Temperature

作　　者：张世豪 ZHANG Shihao

机构地区：[1]河南理工大学工商管理学院

出　　处：《化工装备技术》2023年第6期51-55,共5页Chemical Equipment Technology

基　　金：河南省科技攻关项目(222102320412)。

摘　　要：关键工艺参数的科学设定对循环流化床反应器稳定高效运行至关重要,这也是反应器性能优化的基础。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,并将仿真结果与实验数据进行对比分析。在此基础上,针对关键工艺参数(颗粒粒径、入口气速和物料藏量)对循环流化床反应器内的颗粒体积分数与温度效应进行了综合分析。结果发现:入口气速对反应器内颗粒体积分数和温度均有显著影响;颗粒粒径仅对颗粒体积分数有显著影响;物料藏量对颗粒体积分数和温度的影响效果均不显著。因此,在实际的工程应用中,可考虑调整入口气速和改变粒径大小以提高循环流化床反应器物料循环效率。此外,可优先考虑适当的入口气速来提高循环流化床反应器的温度效应。The scientific setting of key process parameters is crucial for the stable and efficient operation of circulating fluidized bed reactors,which is also the basis for optimizing reactor performance.A three-dimensional full loop simulation of a circulating fluidized bed reactor was conducted using numerical simulation technology,and the simulation results were compared and analyzed with experimental data.On this basis,a comprehensive analysis was conducted on the particle volume fraction and temperature effect in the circulating fluidized bed reactor based on key process parameters(particle size,inlet gas velocity,and material storage).The results showed that the inlet gas velocity had a significant impact on the particle volume fraction and temperature inside the reactor.The particle size only had a significant impact on the particle volume fraction.The effect of material storage on particle volume fraction and temperature was not significant.Therefore,in practical engineering applications,adjusting the inlet gas velocity and changing the particle size could be considered to improve the material circulation efficiency of the circulating fluidized bed reactor.In addition,appropriate inlet gas velocity could be prioritized to improve the temperature effect of the circulating fluidized bed reactor.

关 键 词：关键工艺参数 循环流化床 全回路仿真 颗粒体积分数 温度效应 

分 类 号：TQ536.1[化学工程—煤化学工程]