膜科学与技术

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Application of ceramic membrane in dehydration of turbine oil

Authors： ZHANG Kaibin, LUO Ping, KE Wei, FAN Yiqun

Units： 1. School of Environmental Science and Engineering Nanjing Tech University, Nanjing 211816, China;2. Nanjing Industrial Technology Research Institute of Membrane Material Co. ,Ltd. ,Nanjing 211816, China

KeyWords： ceramic membrane; turbine oil; dehydration

ClassificationCode：陶瓷膜；透平油；脱水

year,volume(issue):pagination： 2023,43(3):116-122

Abstract：

Water is the most common and dominant contaminant in the use of turbine oil. Due to the high viscosity of turbine oil and the high standard requirement of water content in oil, it increases the difficulty of oil-water separation, while membrane separation technology is applied to turbine oil emulsion separation, water tends to block the membrane pores, reducing the efficiency of oil-water separation. The modified ceramic membrane with the hydrophobic surface was used for the oil-water separation of aqueous turbine oil. The effects of transmembrane pressure, cross-flow velocity, oil temperature, and water content on permeability and rejection performance were investigated. The results show that: increasing the transmembrane pressure and oil temperature can significantly improve the membrane permeation flux of turbine oil, the cross-flow velocity at the membrane surface did not affect the membrane permeability and water rejection performance, the membrane permeability flux decreased gradually with the higher water content of the turbine oil. The 100 nm hydrophobic ceramic membrane exhibited better permeation and retention performance and long-term operational stability at optimized conditions of 0.3 MPa transmembrane pressure difference, 1 m/s membrane cross-flow velocity, and 50℃ oil temperature. The water content of the separated turbine oil is around 40 μg/g, well below the maximum required by industry standards.

Funds：

国家重点研发计划项目（2022YFC2105102，2022YFB3805001）

AuthorIntro：

张凯滨（1999-），男，安徽省淮北市人，硕士研究生，研究方向为陶瓷膜材料及应用，E-mail：zykz061325@ 163.com

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