加氢空冷器注剂T型管内气-液流动特性的数值模拟

发布时间：2018-03-20 03:03

本文选题：加氢空冷器　切入点：注剂T型管　出处：《石油学报(石油加工)》2017年05期 　论文类型：期刊论文

【摘要】：以加氢反应流出物空冷器(简称加氢空冷器)系统前的工艺注剂T型管为研究对象,分析其工艺过程,基于工艺注剂T型管的几何特征建立结构离散模型,选择Mixture模型和Realizable k-ε模型对其在操作工况下的流动特性进行计算流体动力学(CFD)模拟,考察不同注剂T型管结构的管内水相分率、湍动能、剪切应力等流体动力学参数的分布规律,揭示气-液两相流动作用下注剂T型管段的冲蚀减薄现象的形成机理。研究结果表明:水相分率及剪切应力最大的位置,即横坐标x位于-0.15~-0.26m之间,管道易发生穿孔泄漏。超声波测厚仪测试获得的管道剩余壁厚与数值预测的结果基本吻合。
[Abstract]:The technological process of the process injection T tube in front of the hydrogenation reaction effluent air cooler system is analyzed. The discrete structure model is established based on the geometric characteristics of the process agent T tube. The Mixture model and the Realizable k- 蔚 model are selected to simulate the flow characteristics under operating conditions. The distribution of hydrodynamic parameters such as water phase separation rate, turbulent kinetic energy, shear stress and so on are investigated. The formation mechanism of erosion thinning phenomenon in the injection T section under the action of gas-liquid two-phase flow is revealed. The results show that the position of the maximum water phase separation rate and shear stress is between -0.15 and 0.26 m, and the horizontal coordinate x is between -0.15 and 0.26 m. The pipe is prone to perforation and leakage. The residual wall thickness obtained by ultrasonic thickness meter is in good agreement with the numerical prediction results.
【作者单位】：浙江理工大学流动腐蚀研究所;杭州市特种设备检测研究院;
【基金】：国家自然科学基金委员会-神华集团有限公司煤炭联合基金(U1361107) 浙江省自然科学基金(LY17E060008) 浙江省科技计划项目(2017C01070) 浙江省公益技术应用研究计划项目(2015C31013) 浙江理工大学研究生创新研究项目(YCX16029)资助
【分类号】：TQ051.5

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