Oil sludge is known as the most massive and hard utilized waste generated in the oil industry. The amount of accumulated oil sludge at any refinery is usually measured in tens of thousands of tons in spite of the ongoing recycling activities. The problem of oil sludge utilization is complicated by climatic conditions of Russia. The absorption capacity of the rubber crumb made from end of life tires in relation to oil sludge absorption for the purpose of further utilization as a fuel in cement kilns is discussed in the article. The oil sludge of one of the refineries of the middle zone of the Russian Federation was studied. Oil sludge is a stable colloidal system with high-water content and dispersion phase distributed in it in the form of petroleum products with a particle sizes of 1-10 microns. The studied oil sludge sample contained water, 61.2%wt. organic components and 15.5%wt. of ash residue according to thermogravimetric analysis. The composition and calorific value of the organic part of the oil sludge does not allow its fire disposal due to the low energy potential of the petroleum products included in its composition. It is proposed to separate the organic component of oil sludge by absorption with a rubber crumb. One quota of rubber crumbs absorbs 1.0–1.1 mass quota of oil sludge per day at a temperature of 65°C and the product preserves the technological properties of the bulk material. The ash residue during the burning of end of life tires contains inorganic oxides that are naturally included into the cement clinker and therefore do not require separate disposal. The organic components during combustion release a significant amount of heat sufficient for its fire disposal in cement kilns, which saves the main process fuel.
References
1. Guangji Hu, Jianbing Li, Guangming Zeng, Recent development in the treatment of oily sludge from petroleum industry: A review, Journal of Hazardous Materials, 2013, V. 261, pp. 470–490, DOI: https://doi.org/10.1016/j.jhazmat.2013.07.069
2. Egazar’yants S.V., Vinokurov V.A., Vutolkina A.V. et al., Oil sludge treatment processes, Chemistry and Technology of Fuels and Oils, 2015, V. 51, pp. 506–515, DOI: https://doi.org/10.1007/s10553-015-0632-7
3. Mirghaffari N., Treatment and recycling of oily sludges produced in the petroleum industry, Proceedings of 2017 International Conference on Environmental Impacts of the Oil and Gas Industries: Kurdistan Region of Iraq as a Case Study (EIOGI), DOI: https://doi.org/10.1109/eiogi.2017.8267638
4. Da Silva L.J., Alves F.C., De França F.P., A review of the technological solutions for the treatment of oily sludges from petroleum refineries, Waste Management & Research, 2012, V. 30(10), pp. 1016–1030, DOI: https://doi.org/10.1177/0734242x12448517
5. Xuwei Long, Guoliang Zhang, Chong Shen et al., Application of rhamnolipid as a novel biodemulsifier for destabilizing waste crude oil, Bioresource Technology, 2013, V. 131, pp. 1-5, DOI: https://doi.org/10.1016/j.biortech.2012.12.128
6. Andreev V.V., Dmitriev S.M., Duntsev A.V. et al., Installation for processing oil waste for the purpose of their disposal (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2019, no. 5, pp. 19-21, DOI: https://doi.org/10.24887/0028-2448-2019-5-19-21
7. Gataullina E.M., Zinnurova A.D., Sharipova L.K., Case study: biological treatment of oil-contaminated wastes at oil sludge disposal site (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 4, pp. 81-83.
8. Korkina E.A., Mal'gina S.P., Shtogrina A.V. et al., Results of a modeling experiment on the restoration of reclaimed lands (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2023, no. 1, pp. 88-92, DOI: https://doi.org/10.24887/0028-2448-2023-1-88-92
9. Timofeeva S.S., Timofeev S.S., Modern technologies for oil sludge processing (In Russ.), 2009, no. 8, pp. 10-11, URL: https://natural-sciences.ru/ru/article/view?id=14044
10. Shantarin V.D., Zemenkov Yu.D., Zemenkova M.Yu., Pavlov V.P., Technology of oil sludge disposal (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 5, pp. 95-97.
11. Miroshnikova O.V., Borisov I.N., Utilizing tires as a combustible additive in cement production (In Russ.), Vestnik BGTU im. V.G. Shukhova = Bulletin of Belgorod State Technological University named after V.G. Shukhov, 2019, no. 2, pp. 131–136, DOI: https://doi.org/10.12737/article_5c73fc2325bd06.24999916
