摘要
基于计算流体动力学方法,采用Fluent软件中的雷诺应力模型和颗粒随机轨道模型,选取旋流除砂器常见工作状态,数值模拟研究了颗粒入口速度在5~15 m/s、质量浓度在10~30 kg/m^(3)变化时对旋流除砂器壁面磨损的影响,得到了旋流除砂器内壁磨损分布规律。模拟结果表明,旋流除砂器壁面磨损分布并不均匀,入口环形空间以及底流口附近磨损率较大。颗粒入口速度和质量浓度的变化对旋流除砂器壁面磨损整体分布影响较小,但入口速度的变化会改变各磨损区域内磨损最严重点的位置,入口环形空间壁面磨损位置变化最为明显,而颗粒质量浓度的变化则对壁面磨损最严重点的位置影响较小。颗粒入口速度和质量浓度的增大都会使旋流除砂器最大磨损率增大,入口速度对旋流除砂器最大磨损率的影响比质量浓度更大。
Based on the computational fluid dynamics method,the Reynolds stress model and the particle random trajectory model in Fluent software were used to select the common operating state of the cyclone desander.The numerical simulation was used to study the inlet velocity of the particles at 5~15 m/s and the mass concentration at 10~30 kg/m^(3).The influence of the change on the wall erosion of the cyclone desander was obtained,and the erosion distribution law of the inner wall of the cyclone desander was obtained.The simulation results show that the wall erosion distribution of the cyclone desander is not uniform,and the erosion rate near the inlet annular space and the underflow port is large.The change of inlet velocity and particle mass concentration has little effect on the overall distribution of wall erosion of the cyclone desander,but the change of inlet velocity will change the position of the most severe erosion point in each erosion area.The change in wall erosion position in the inlet annular space is most obvious,while the change in particle mass concentration has little effect on the position of the most severe erosion point.The increase in particle inlet velocity and mass concentration will increase the maximum erosion rate of the cyclone desander,and the effect of inlet velocity on the maximum erosion rate of the cyclone desander is greater than that of mass concentration.
作者
梅毅
刘杨
罗元
刘祎
MEI Yi;LIU Yang;LUO Yuan;LIU Yi(Hanzheng Testing Technology Co.Ltd.,Guanghan 618300,China)
出处
《石油化工设备》
CAS
2024年第2期18-22,共5页
Petro-Chemical Equipment
基金
四川省科技计划项目(2023YFS0486)。
关键词
旋流除砂器
磨损
颗粒
入口速度
质量浓度
数值模拟
cyclone desander
erosion
particle
inlet velocity
mass concentration
numerical simulation
