Development of a technology for the regeneration of spent catalysts used in hydrotreating processes
Authors
Alisher Jumaboev, Yusupov Farkhod, Denis Pestryakov, Usmonali Sodikov
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Annotation
Hydrotreating catalysts are widely used in petroleum refining to remove sulfur-, nitrogen-, and other undesirable compounds from petroleum fractions. The continuous growth of oil-refining capacities has increased catalyst consumption and, consequently, the accumulation of spent catalysts. Therefore, the regeneration and reuse of deactivated catalysts represent an important technological, economic, and environmental task. This study focuses on the development of a technology for restoring the catalytic properties of spent Co–Mo/Al₂O₃ hydrotreating catalysts and modifying them for further application in hydrotreating processes. Particular attention is paid to the selection of suitable raw materials and modifying components that do not adversely affect the structure and active surface of the catalyst. Locally available kaolin was selected as the mineral modifier because of its availability and physicochemical characteristics. The combined regeneration and kaolin-modification approach was used to improve the structural and catalytic properties of the spent Co–Mo/Al₂O₃ hydrotreating catalyst. The regenerated catalyst can be applied in the hydrotreating of diesel fuel and gasoline fractions. The proposed approach may reduce the consumption of fresh catalysts, decrease industrial catalyst waste, and improve the resource efficiency of petroleum-refining processes.
Keywords
Authors
Alisher Jumaboev, Yusupov Farkhod, Denis Pestryakov, Usmonali Sodikov
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References:
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