垃圾发电余热锅炉烟道仿真研究  

Simulation calculation research on flue of waste heat boiler for garbage power generation

作　　者：徐伟[1] 陈斯 姚心[1] 郭天宇 XU Wei;CHEN Si;YAO Xin;GUO Tianyu

机构地区：[1]中国恩菲工程技术有限公司,北京100038

出　　处：《有色设备》2024年第1期24-31,共8页Nonferrous Metallurgical Equipment

基　　金：国家重点研发计划(2022YFB3304901);中国科协(2022QNRC001)。

摘　　要：工程实际中,焚烧余热锅炉烟道管束常因受烟气冲刷而磨损严重,专家往往采用在管束添加鳍片的方法来保护管束。但是,所添加鳍片的选择多凭经验,缺少理论上的支持和验证。本文利用流体仿真计算研究了管束加入鳍片设计对烟气流动的影响,并根据仿真结果对鳍片的设计方案进行了优化。仿真结果表明,在管束上添加鳍片对烟气具有导流作用,能提升烟气在管道内的流动均匀性,同时通过对鳍片的宽度和高度进行精细设计,能进一步提高烟气流动均匀性,提高烟气与管束间的换热效率。In practical engineering,the flue tube group within the waste heat boilers is frequently worn by scouring of the flue gas.To deal with this situation,the experts usually using several adding fins to protect the tube group,which could reduce the scouring of flue gas.However,the design of the adding fins,including the number and the position is mostly based on experience,which lacks of theoretical support and verification.In this article,the influence of adding fins on the flow field of the flue gas is studied by CFD simulation.Furthermore the optimizes design of the fins is achieved by analysing simulation results.The simulation results show that the addition of fins to the tube group has a diversion effect on the flue gas,which can improve the flow uniformity of the flue gas in the pipeline,and at the same time,the fine design of the width and height of the fins can further improve the flue gas flow uniformity and improve the heat exchange efficiency between the flue gas and the tube group.

关 键 词：垃圾发电 烟道管束 数值仿真 余热锅炉 鳍片 仿真模型 烟气流动 

分 类 号：TM621[电气工程—电力系统及自动化]