Abstract:

Using FLUENT software， the inner flow field and concentration field of the entrance， tilting plate， flat plate and gravity sedimentation area in oil-water gravity separator is numerically analyzed. Meanwhile， the effect of the structural parameter， operation parameter and oil quality on separation result is investigated. The research indicates that the separation effect of the separator is good， but flow characteristic needs to be enhanced. Plate space，plate obliquity and plate length in the separator have optimal value. The smaller the viscidity， the smaller the density of oil， the large size of grains， and the more obvious the separating effect. The more influent flux of the mixture，the smaller the volume fraction of oil， and the more difficult the realization of the separating process. This work provides reference for further development of effective and compact horizontal oil-water gravity separation equipment.

Key words: oil-water gravity separation, numerical simulation, flow characteristic, separating effect

摘要：

采用FLUENT商用软件,对重力式油水分离器入口、斜板、平板以及重力沉降区域内流场和浓度场进行了数值分析,并考察了分离器结构参数、操作参数以及油品的物料性质对分离效果的影响。研究发现,分离器的分离效果良好,分离器的水力特性有待提高;分离器内板间距、板倾角和板长存在最优值;油品黏度越小、密度越小、粒径越大,分离效果越明显;混合物入口流量越大、混合物中油相体积分数越小,分离的过程越难实现。本工作为进一步开发高效紧凑的卧式油水重力分离设备提供了参考。

关键词: 油水重力分离, 数值模拟, 流动特性, 分离效果

CLC Number: 

• X703.3