Green Refining of Waste Lubricating Oil: A China Perspective

Jinlong Wu, Bo Li, Wei Wang, Shu Yang, Peng Liu, Changyan Yang, Yigang Ding


Presently, many regeneration processes of waste lubricating oil, such as catalytic hydrogenation, are available. However, some of these processes are highly costly and not suitable for Chinese economic conditions, and some may produce contaminated impurities such as acid slag, which cannot meet environmental protection requirements. This study aims to develop a green process for the regeneration of waste lubricating oil into a base oil, which should meet the requirements of green chemistry, have the characteristics of simple operation, low cost, less pollution and high recovery rate, and turn wastes into renewable resources. The new process developed via this research has three stages. First, mechanical and large particle impurities in the waste lubricating oil were removed by pretreatment. Second, most of the colloid and asphaltene were removed by thermal extraction and sedimentation. Finally, the activated bleaching earth was used to further purify the waste lubricating oil. The performance evaluation of the finally obtained lubricating base oil conformed to the standard of the HVI-100 lubricating oil. The total recovery rate of the process was about 63.5%.

Citation: Wu, J., Li, B., Wang, W., Yang, S., Liu, P., Yang, C., and Ding, Y. (2019). Green Refining of Waste Lubricating Oil: A China Perspective. Trends in Renewable Energy, 5, 165-180. DOI: 10.17737/tre.2019.5.2.0084


Waste lubricating oil; Green refining; Pretreatment; Thermal extraction and sedimentation; Response surface methodology

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An, J. (2017). Global lubricant market analysis and development forecast. Petroleum Products Application Research(3), 4-9.

Wang, Q., Tao, C., and Yang, N. (2017). Automotive lubrication efficiency and long oil change period. Lubricating Oil(1), 1-6.

Gao, X., and Tang, W. (2002). Replacing and Inspecting of Lubricant for Engine of Automobile. Shandong Metallurgy(4), 69-70.

Speight, J. G. (2014). The chemistry and technology of petroleum, CRC press.

Thom, R., Kollmann, K., Warnecke, W., and Frend, M. (1995). Extended oil drain intervals: Conservation of resources or reduction of engine life. SAE transactions, 706-718.

Li, Y., Wu, J., Jiang, G., Wu, H., Huai, Y., and Zhao, W. (2016). Progresses in regeneration technologies for used lube oils. Petrochemical Technology(2), 244-250.

Liu, J., Zhang, Z., Gao, W., Lei, Y., and Bai, J. (2004). Technique for regenerating waste lubricating oil. CN1539936A.

Liu, J. (2012). Solvent Extraction of Waste Gasoline Engine Oil-Flocculation Composite Regeneration Technology. China Academy of Machinery Science and Technology

Whisman, M. L., Reynolds, J. W., Goetzinger, J. W., and Cotton, F. O. (1978). Process for preparing lubricating oil from used waste lubricating oil. Google Patents.

Durrani, H. A., Panhwar, M. I., and Kazi, R. A. (2011). Re-Refining of waste lubricating oil by solvent extraction. Mehran University Research Journal of Eng. & Tech, 30(2), 237-246.

Hsu, Y.-L., and Liu, C.-C. (2011). Evaluation and selection of regeneration of waste lubricating oil technology. Environmental monitoring and assessment, 176(1-4), 197-212.

Lam, S. S., Liew, R. K., Jusoh, A., Chong, C. T., Ani, F. N., and Chase, H. A. (2016). Progress in waste oil to sustainable energy, with emphasis on pyrolysis techniques. Renewable and Sustainable Energy Reviews, 53, 741-753.

Ackerman, A. H. (1929). Process for treating mineral oils. U.S. Patent No. 1,742,020.

Audibert, F. (2006). Waste engine oils: rerefining and energy recovery, Elsevier, Amsterdam. DOI: 10.1016/B978-0-444-52202-3.X5018-8

Zhang, B., Wu, J., Yang, C., Qiu, Q., Yan, Q., Li, R., Wang, B., Wu, J., and Ding, Y. (2018). Recent Developments in Commercial Processes for Refining Bio-Feedstocks to Renewable Diesel. BioEnergy Research, 11(3), 689-702. DOI: 10.1007/s12155-018-9927-y

Zhang, B., and Seddon, D. (2018). Hydroprocessing Catalysts and Processes: The Challenges for Biofuels Production, World Scientific Publishing, Singapore. DOI: 10.1142/q0141

Iwao, Y., Yamamoto, S., and Kunihiro, T. (1979). Method of preparing base stocks for lubricating oil. U.S. Patent 4,157,294.

Manley, R. E., Mccarty, B. Y., and Gross, H. H. (1938). Solvent refining process. U.S. Patent 2,121,323.

Sequeira Jr, A., Smith Jr, B. F., and Mead, T. C. (1981). Solvent refining process. U.S. Patent 4,294,689

Gould, R. M., White, L. S., and Wildemuth, C. R. (2001). Membrane separation in solvent lube dewaxing. Environmental Progress, 20(1), 12-16. DOI: 10.1002/ep.670200110

Lu, Y., Yang, J., and Wang, L. (2016). Study on Coloring Substances of Refined Lubricating Oil. Acta Petrolei Sinica, 32(1), 132-142.

Alves dos Reis, M. (1991). Waste lubricating oil rerefining by extraction-flocculation. 3. A pilot plant study. Industrial & Engineering Chemistry Research, 30(11), 2449-2456.

Mohammed, R. R., Ibrahim, I. A., Taha, A. H., and McKay, G. (2013). Waste lubricating oil treatment by extraction and adsorption. Chemical Engineering Journal, 220, 343-351.



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