摘要
为了提高重力式分离器的性能,选取不同结构的整流和聚结构件,采用Fluent数值模拟软件对分离器内部流场进行三维数值模拟,通过对比速度场和浓度场分布,确定整流和聚结构件的性能。在长为1.8 m,内径为384 mm的重力式分离器内安装4种不同结构的聚结板,改变进口含油率和流量,测量颗粒的单位体积质量含油率,确定聚结板的分离性能。结果表明:在流量较大的时候,聚结板分离效果下降,表现出对粒径选择性的单一分离作用;聚结板的结构和材质对液滴的聚结沉降影响很大,应根据工况和处理条件进行合理选择。
In order to increase the efficiency of gravity separator, different kinds of commutate and coalescence internals were chosen. Three-dimensional numerical simulation of flow field in separator was carried out by Fluent software. Comparing the velocity field and concentration field, the performances of the commutate and coalescence internals were obtained. Experi- ments on separation behaviors of 4 kinds of coalescence plates were carried out in a separator with diameter of 384 ram, length of 1.8 m. The separation behaviors of coalescence plates can be determined by measuring droplets unit volumetric mass oil concentration in different inlet flow rate and oil concentration. The results indicate that the separation efficiency declines at high flow rate, at the same time takes on singleness separation selectivity with particle size. The best coaleseencing plates suited to the separator and operation conditions should be chosen because of configuration and material of eoalescencing plates influencing the settlement of particles.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第6期118-124,共7页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家“863”计划项目(2006AA09Z302)
关键词
重力分离
数值模拟
流场
液滴聚结
粒径
gavitational separation
numerical simulation
flow field
droplets coalescence
particle size
