加热炉结垢导致火管超温的温度场仿真分析  

Temperature Field Simulation and Analysis of Fire Tube Overheating Caused by Fouling of Heating Furnace

作　　者：孟凡琦[1] 姚依兰 孟庆武[1] 叶卫东[1] 张晓雪[1] 任黎明[1] 

机构地区：[1]东北石油大学,黑龙江大庆163318

出　　处：《石油化工腐蚀与防护》2017年第3期1-4,共4页Corrosion & Protection In Petrochemical Industry

基　　金：大学生创新训练重点项目(201610220006);国家科技支撑计划项目(2012BAH28F03)

摘　　要：为了查清火筒式加热炉结垢导致火管超温情况,利用ANSYS软件,建立加热炉火管的三维有限元模型,对火管温度场进行仿真分析,模拟计算火管结垢前后各部位金属的温度场分布。计算结果表明,加热炉火管结垢40 mm后,火管无耐热层区域的金属内壁温度由450℃升高到650℃,内壁三分之一厚度处金属温度超过500℃,此温度超过碳钢使用温度上限,金属容易发生组织损伤和高温蠕变,导致火管烧损事故。In order to investigate fire tube overheating caused by fouling of drum type heating furnace,a 3D finite element model of fire tube was established with ANSYS software,which could simulate temperature field distribution around the fire tube before and after scaling. According to the simulation,when fouling thickness reached 40 mm,temperature of inner wall of fire tube without thermal resistant layer rose from 450 ℃ to 650 ℃,and temperature at the 1/3 thickness of inner wall was higher than500 ℃,which could result in serious overheating problem. As a result,fire tube prone to suffer from microstructure injury and high temperature creep,and hence brought about a burning accident.

关 键 词：加热炉 火管 结垢 温度场 仿真分析 

分 类 号：TE963[石油与天然气工程—石油机械设备]