摘要
针对CSCR活性炭脱硫脱硝一体化烧结烟气净化系统由于烟气分配不均匀,易导致系统稳定性较差、运行成本偏高等问题,本文通过Fluent软件建立烟气净化系统的三维数值计算模型,对系统内烟气流动进行数值模拟,计算得到烟气循环系统速度场和压力场,分析增加挡板前、后系统内的烟气流分布情况。计算结果表明:通过在烟道内增设两处挡板,获得两烟道烟气流速分别从8.41、10.15 m/s变为9.17、9.40 m/s;同时,直径为2.0、1.6 m的烟箱进气烟道速度标准差分别由1.22、1.07变为0.58、0.01,使得到达各脱硫脱硝模块烟气量近似相等,系统基本实现了目前生产条件下烟气的均匀分配,研究结果将有助于烟气均匀分配并获得更高的技术经济指标。
Aiming at uneven flue gas distribution of the integrated sintering flue gas purification system of CSCR activated carbon desulfurization and denitrification,which is likely to cause problems such as poor system stability and high operating costs,a three-dimensional numerical calculation model of the flue gas purification system is established using Fluent saftware to numerically simulate the flue gas flow in the system.The velocity field and pressure field of the flue gas circulation system is obtained by calculation,and the flue gas flow in the system before and after the increase of the baffle distribution is analyzed.The results show that,by adding two baffles in the flue,the flue gas velocities of the two flues are changed from 8.41,10.15 m/s to 9.17,9.40 m/s respectively;at the same time,the smoke box with a diameter of 2.0,1.6 m enters.The standard deviation of the flue gas velocity is changed from 1.22,1.07 to 0.58,0.01 respectively,so that the amount of flue gas reaching each desulfurization and denitration module is approximately equal.The system basically realizes the uniform distribution of flue gas under current production conditions,so that the research results will be conducive to the uniform distribution of flue gas and thus obtaining higher technical and economic indicators.
作者
王俊杰
赵文书
佘雪峰
王延江
王建芳
WANG Junjie;ZHAO Wenshu;SHE Xuefeng;WANG Yanjiang;WANG Jianfang(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Delong Steel,Xingtai 054009,Hebei,China)
出处
《烧结球团》
北大核心
2021年第4期84-91,共8页
Sintering and Pelletizing
关键词
烧结烟气
脱硫脱硝
数值模拟
烟气均匀分布
sintering flue gas
desulfurization and denitrification
numerical simulation
flue gas equalization
