高温管式烟气换热器的高温段数值模拟  

Numerical simulation on hightemperature section of hightemperature tubetype flue gas heat exchanger

作　　者：汤一雷 TANG Yilei(Santacc Energy Co.,Ltd,Nanjing 210018,China)

机构地区：[1]长江三星能源科技股份有限公司,江苏南京210018

出　　处：《技术与市场》2024年第9期44-48,52,共6页Technology and Market

摘　　要：运用流体模拟软件对烟气温度800℃的高温管式烟气换热器的烟气进口段进行数值模拟分析,为高温管式烟气换热器的高温段设计改进提供重要依据。通过软件仿真计算,得到不同流速与结构下高温换热器的高温段的冷侧流体压降数据与壁面温度分布数据,对压降与壁温进行数据分析得到高温管式烟气换热器的高温段的设计较优解。结果表明:高温段冷风流速控制在25 m/s左右壁温与压降较为合理,较高的流速或较低的流速对热交换器的整体设计均有不利影响;高温段圆形对流冷风通道设计是较优设计结构。试验为高温换热工程设计提供了新的方法与思路。The flue gas inlet section of a high-temperature tubular flue gas heat exchanger with a flue gas temperature of 800℃ was numerically simulated by fluid simulation software to provide an important basis for the design improvement of the high-tem-perature section of high-temperature tube flue gas heat exchangers.By software simulation calculation,the cold side fluid pressure drop data and wall temperature distribution data of the high-temperature section of the high-temperature heat exchanger under dif-ferent structures and flow rates were obtained.The data analysis of pressure drop and wall temperature was carried out to obtain the optimal design solution for the high-temperature section of the high-temperature tube-type flue gas heat exchanger.The results show that controlling the cold air flow rate in the high-temperature section at around 25 m/s is more reasonable for wall tempera-ture and pressure drop.Higher or lower flow rates have adverse effects on the overall design of the heat exchanger.The design of circular convection cold air channels in the high-temperature section is a more optimal design structure.This simulation provides new methods and ideas for the design of high-temperature heat exchange engineering.

关 键 词：化工机械 换热器 传热 有限元分析 数值模拟 

分 类 号：TK172[动力工程及工程热物理—热能工程]