垃圾焚烧电厂烟气半干法脱酸模拟研究.pdfVIP

第43卷第4期 动 力 程 学 报 Vol.43No.4 2023年4月 Journal of Chinese Society of Power Engineering Apr.2023 文章编号：1674-7607（2023)04-0491-08 D0l:10.19805/j.cnki.jcspe.2023.04.014 垃圾焚烧电厂烟气半干法脱酸模拟研究 李恒凡12，李玉龙² ，郑子潘² ，焦世权”，韩中合1l.2 （1.华北电力大学河北省低碳高效发电技术重点实验室，河北保定071003； 2.华北电力大学动力工程系，河北保定071003） 摘要：以某垃圾楚烧电厂尾部烟道为研究对象，基于计算颗粒流体力学建立了Ca(OH)2雾化浆 液脱酸过程中传热传质模型及化学反应模型，分析了化学计量比（SR ）、烟气温度、烟气速度、浆液 粒径、浆液质量分数和HCI质量浓度等对脱酸效率的影响。结果表明：采用垃圾发电厂烟气半干 法脱酸能够大幅降低烟气中酸性气体的浓度，随着SR的增大，脱酸效率逐渐提高，且脱氯效率远 大于脱硫效率；化学计量比相同时，随着烟气速度的增加，脱氯效率几乎不变，而脱硫效率有所下 降；烟气温度和浆液质量分数增加以及HCI质量浓度减小均会使脱酸效率降低；脱酸效率随浆液 粒径的增加先增大后减少，当浆液粒径为50μm时脱硫效率达到最大，当浆液粒径为80μm时脱 氯效率达到最大。 关键词：垃圾焚烧；CPFD；烟气半干法脱酸；数值模拟；脱酸效率 中图分类号：X701 文献标志码：A 学科分类号：610.30 Numerical Simulation on Semi-dry Deacidification of Flue Gas for Waste Incineration Power Plants LI Hengfanl-2，LIYulong， ZHENGZipan， JIAO Shiquan² ，H HAN Zhonghel.2 (1. Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei Province, China; 2. Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei Province, China) Abstract: Taking the tail flue of a waste incineration power plant as an object, the heat and mass transfer model and chemical reaction model in the process of deacidification were established based on CPFD meth- od, and the effects of stoichiometric ratio (SR), flue gas temperature and velocity, slurry particle size and concentration and HCl concentration on deacidification efficiency were analyzed. Results show that the semi-dry flue gas deacidification of waste power plant can greatly reduce the concent