Coalescence of Water Droplets on Hydrophobic Fibers in Water-in-Oil Emulsion

被引：0

作者：

Liu L. ^{[1
]}

Hou L. ^{[1
]}

Tan W. ^{[1
]}

Zhu G. ^{[1
]}

Tang G. ^{[2
]}

机构：

[1] School of Chemical Engineering and Technology, Tianjin University, Tianjin

[2] School of Chemistry and Materials Science, Shandong Normal University, Jinan

来源：

Zhu, Guorui (zhuguorui@tju.edu.cn) | 2018年 / Tianjin University卷 / 51期

关键词：

Collision coalescence; Hydrophobic fiber; Separation efficiency; Water-in-oil emulsion;

D O I：

10.11784/tdxbz201703006

中图分类号：

学科分类号：

摘要：

The process in which water droplets were intercepted, combined and detached on fibers in water-in-oil emulsion was observed by the self-desighed micro channel for fibers coalescence and high speed photography system. The results show that there were three types of collision in water-in-oil emulsion: two water droplets in emulsion coalescing, water droplet captured by the fiber colliding and coalescing with the water droplet in emulsion, and two water droplets on the surface of the fiber coalescing. The influence of initial water content and flow velocity on the pressure drop and separation efficiency of coalescer filled by hydrophobic fibers was investigated. The results show that the separation efficiency was high when the water content and the flow velocity were low. When the flow velocity was 1mm/s and the initial water content was 3%, the separation efficiency was up to 60%. The morphology of the water droplets at the entrance, middle and exit of fibrous bed was analyzed by using microscope, and the largest diameter of water droplets was found at the exit. It indicates that the water droplets leaving the fibers could be captured and collided with other water droplets again. © 2018, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.

引用

页码：271 / 277

页数：6

共 19 条

[1]

Guo H., Wang P., Solid granule contamination analysis and control for aircraft hydraulic systems, Machine Tool&Hydraulics, 35, 1, pp. 248-249, (2007)

[2]

Pan Y., Wang W., Wang T., Et al., Preparation and application of ceramic support double layer dynamic membrane in separation of oil-in-water emulsion, Journal of Tianjin University: Science and Technology, 48, 3, pp. 269-274, (2015)

[3]

Liu L., Yang J., Kong Q., Et al., Numerical simulations of flow field and separation efficiency for wave-plate mist eliminator, Journal of Tianjin University: Science and Technology, 46, 8, pp. 755-761, (2013)

[4]

Liu L., Kong Q., Tan W., Numerical simulation on mechanical properties of wave-plate mist eliminators, Journal of Chemical Engineering of Chinese Universities, 28, 3, pp. 477-483, (2014)

[5]

Liu Y., Wu S., Qi J., Effect of coalescence packing materials on removaling water from oil, Chemical Industry and Engineering Progress, 25, pp. 159-162, (2006)

[6]

Ma S., Kang Y., Oil and Water Separation Based on Ccoalescence Technology, (2013)

[7]

Hazlett R.N., Fibrous bed coalescence of water: Steps in the coalescence process, Industrial & Engineering Chemistry Fundamentals, 8, 4, pp. 625-632, (1969)

[8]

Othman F.M., Fahim M.A., Jeffreys G.V., Et al., Prediction of predominant mechanisms in the separation of secondary dispersions in a fibrous bed, Journal of Dispersion Science and Technology, 9, 2, pp. 91-113, (1988)

[9]

Kulkarni P.S., Patel S.U., Chase G.G., Et al., Separation of water droplets from water-in-diesel dispersion using super hydrophobic polypropylene fibrous membranes, Separation and Purification Technology, 85, 6, pp. 157-164, (2014)

[10]

Kulkarni P.S., Patel S.U., Chase G.G., Layered hydrophilic/hydrophobic fiber media for water-in-oil coalescence, Separation and Purification Technology, 85, 6, pp. 157-164, (2012)

← 1 2 →