摘要
针对旋流器在运行过程中所产生的短路流、循环流以及分离效率低等现象,提出了一种溢流循环水力旋流器。依据计算流体力学,应用FLUENT软件对其进行了数值模拟,并与现有的双锥水力旋流器进行对比分析,研究了介质条件及操作参数对该旋流器的流场以及分离性能的影响。研究结果表明:溢流循环结构能够改善水力旋流器内部的短路流以及循环流现象,保持原有流场的稳定,还能有效地提高内侧溢流口轻质相体积分数,降低底流口轻质相体积分数,最终实现油水两相高效分离。
Aiming at the phenomena of short circuiting flow, circular flow and low separation efficiency in the operation of the hydrocyclone, an overflow-circle hydrocyclone was proposed. It was numerically simulated by FLUENT software based on computational fluid dynamics. Compared with the existing dual-cone hydrocyclone, the influences of medium conditions and operation parameters on the flow field and separation performance of the hydrocyclone were studied. Research results show that the phenomena of short circuiting flow and circular flow in hydrocyclone can be improved by overflow-circle structure; it can also keep the stability of the original flow field, improve the light phase volume fraction of the inner overflow outlet and reduce the underflow volume fraction of light phase effectively. As a result, oil and water are separated efficiently.
出处
《化学工程》
CAS
CSCD
北大核心
2017年第10期48-53,61,共7页
Chemical Engineering(China)
基金
国家863计划课题(2012AA061303)
教育部高等学校博士学科点专项科研基金资助课题(20132322110002)
东北石油大学研究生创新科研项目(YJSCX2017-021NEPU)
关键词
溢流循环
短路流
循环流
数值模拟
内侧溢流口
overflow-circle
short circuiting flow
circular flow
numerical simulation
inner overflow outlet
