催化裂化装置冷壁双动滑阀计算流体力学流场分析  

Computational Fluid Dynamic Flow Field Analysis of Cold Wall Double Acting Slide Valve of Catalytic Cracking Unit

作　　者：张龙奎 王春雷 刘晓东 易捷 潘晖宪 ZHANG Long-kui;WANG Chun-lei;LIU Xiao-dong;YI Jie;PAN Hui-xian(PetroChina Bohai Equipment Lanzhou Petrochemical Equipment Branch,Lanzhou 730060,China;Gansu Province Petrochemical Special Equipment Engineering Technology Research Center,Lanzhou 730060,China)

机构地区：[1]中国石油渤海装备兰州石油化工装备分公司,甘肃兰州730060 [2]甘肃省炼化特种装备工程技术研究中心,甘肃兰州730060

出　　处：《石油化工设备》2023年第3期38-43,共6页Petro-Chemical Equipment

基　　金：甘肃省科技计划资助项目(1206GTGA014)。

摘　　要：冷壁双动滑阀安装在重油催化裂化、催化裂解装置第一再生器、第二再生器及旋风分离器顶部出口管道上,用以控制再生器压力或再生器与反应器两器间的压差。某炼油厂催化裂化装置冷壁双动滑阀实际运行时的开度为9.5%,其出口部位磨损十分严重,外壁局部超温,初步分析认为系高速烟气携带催化剂颗粒冲刷所致。应用计算流体力学(CFD)方法,对冷壁双动滑阀分别进行了100%、68%、38%、9.5%开度下的流场分析,通过模拟数据的对比分析验证了CFD方法预测冷壁双动滑阀出口部位冲刷磨损的准确性和可靠性。The cold wall double acting slide valve is installed on the outlet pipe at the top of the first regenerator,the second regenerator and the cyclone separator of the heavy oil catalytic cracking and deep catalytic cracking unit to control the pressure of the regenerator or the pressure difference between the regenerator and the reactor.The opening of a cold wall double acting slide valve of one catalytic cracking unit in a refinery was 9.5%in actual operation.The outlet part of the slide valve was seriously worn,and the local temperature of the outer wall was overheated.The preliminary analysis shows that it is caused by the scouring of catalyst particles carried by high-speed flue gas.The computational fluid dynamics(CFD)method was applied to analyze the flow field of the cold wall double acting slide valve at 100%,68%,38%and 9.5%opening respectively.The accuracy and reliability of the CFD method in predicting the erosion and wear at the outlet of the cold wall double acting slide valve were verified through the comparative analysis of simulation data.

关 键 词：催化裂化装置 冷壁双动滑阀 流场分析 涡流 冲刷 

分 类 号：TQ055.8[化学工程]