重力式油气水分离场中液滴沉降速度模型分析

在流体力学指导下,通过对重力式分离场中分散相液滴行为特性的分析,阐述了在工程实际应用中的油气水分离设备采用传统的液滴沉降速度模型的局限性;初步探讨了分散相液滴碰撞聚合后,其铅垂运动速度和分离时间及液滴粒径的关系;对具有碰撞聚结现象的液滴和孤立液滴二者在沉降速度、分离时间及水平位移方面进行了分析比较;推导出具有碰撞聚结现象的液滴沉降速度模型;提出了在今后重力式油气水分离设备设计中,采用碰撞聚结沉降速度模型进行设计的必要性.

THE SETTING VELOCITY MODEL ANALYSIS OF THE DROPS IN THE GRAVITY TYPE OIL-GAS-WATER SEPARATION FIELD

This paper analyzes the drops behavior characteristics in the gravity separation field under the guidance of fluid mechanics, and discusses the limitations using tradition setting velocity model of the drops in engineering apply. The relation of the settling velocity and separation time with the drops grain size under the collision polymerization of the drops is also discussed in the paper. By comparing the setting velocity, separation time and horizontal displacement between the collision polymerization drops and the single drop, the drop’s model of setting velocity under the collision is derived. It is necessary to use the collision polymerization model to design the gravity type oil/gas/water separation equipment in the futurd.