Feasible application of oil-water separation membrane in regeneration of spent lubricating oil
NIU Luo-wei1, YIN Yan-mei2, DAI Hai-ping1, KE Yong-wen2
1. State Key Laboratory of Separation Membrane and Membrane Processes/National Center for International Joint Research on Separation Membranes Science and Technology, Tiangong University, Tianjin 300387, China; 2. Tianjin Shuizhiyuan Environmental Materials Co., Ltd., Tianjin 300387, China
Abstract: Oil-water separation membrane is used to treat with spent lubricating oil,and the filtration flux and treatment effect on spent lubricating oil with different viscosities are investigated at different temperatures and pressures.The main performance indexes of lubricating oil before and after membrane filtration are tested,and the factors affecting membrane fouling and the membrane cleaning method are analyzed.It is indicated that the filtration flux increases with the increase of filtration temperature and pressure.After spent lubricating oil is treated by oil-water separation membrane process,the moisture content of the filtered oil drops to 70 mg·kg-1,the sludge oxidation index of that declines to 0,and the filter oil cleanliness decreases to ISO 17/15/≥10.Moisture,sludge and mechanical wear particles are reduced,representing that this process can effectively treat with moisture and sludge in spent lubricating oil.Through physically backwashing,membrane fouling can effectively be slowed down and the service life of the separation membrane is prolonged.
牛罗伟, 尹延梅, 戴海平, 柯永文. 油水分离膜在废润滑油再生工艺中的可行性应用[J]. 现代化工, 2020, 40(5): 133-136,142.
NIU Luo-wei, YIN Yan-mei, DAI Hai-ping, KE Yong-wen. Feasible application of oil-water separation membrane in regeneration of spent lubricating oil. Modern Chemical Industry, 2020, 40(5): 133-136,142.
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