effect on TBPS decomposition and the formation of H 2 S and C 4 mercaptans, with an exception for the NiW catalyst at PH2 = 60 bar. Temperature exhibited a strong influence on all aspects, including TBPS decomposition, H₂S forma - tion, C 4 mercaptan formation, isobutene formation, and isobutane formation. The findings from this study provide valuable insights for optimising the sulphiding process in hydroprocessing and refining practices. By understanding the decomposition profile of TBPS and its interaction with different catalysts, refineries can enhance the efficiency and effectiveness of the sulphiding process, leading to improved catalyst acti - vation and overall performance in hydroprocessing. Further research and investigation may be necessary to explore the behaviour and performance of other sulphiding agents and their interactions with different catalyst types under vari - ous operating conditions. The knowledge gained from this research can contribute to the development of cleaner and more sustainable refining practices, aligning with the indus - try’s goals for environmental responsibility. In summary, the investigation of the decomposition pro - file of TBPS in hydroprocessing catalysts provided valua - ble insights into the sulphiding process. The presence of a catalyst significantly facilitated the decomposition of TBPS, with H₂S as the primary by-product. The type of catalyst, temperature, LHSV, and gas-to-oil ratio influenced the product distribution. SulfrZol 54 is a mark of Lubrizol.
References 1 Moonen R, Alles J, Ras E-J, Harvey C, Moulijn J A, Performance test - ing of hydrodesulfurization catalysts using a single-pellet-string reactor, Chem. Eng. Technol. , 40 (11), pp.2,025-2,034, 2017. 2 Ortega C, et al, Can. J. of Chem. Eng ., 99, pp.1,288-1,306, 2021. 3 Heller F E, Roberts C D, Atomized polysulfide used in ethylene stream cracker, Patent 7 154 016 B2, 2006. 4 Fabuss M, Duncan D A, Smith J O, Satterfield C N, Effect of Organosulfur Compounds on Rate of Thermal Decomposition of Selected Saturated Hydrocarbons, Industrial & Engineering Chemistry Process Design and Development , Vol. 4, pp.117-122, January 1965. Jennifer A Jackson is Innovation Technology Manager at Lubrizol, over - seeing product line innovation and R&D for upstream oilfield and refin - ery chemistry. With 18 years of experience in specialty oilfield chemicals and R&D leadership, she develops growth strategies with a focus on innovative technologies. She holds a PhD in inorganic chemistry from the University of Texas at Austin and a BS in chemistry from Wichita State University. She has numerous publications and patents in corro - sion science and oilfield chemistry. Email: Jennifer.Pate@lubrizol.com Tiago Vilela leads the Refinery Catalyst Testing (RCT) global services for Avantium Catalysis is responsible for the overall performance of the business line. He has more than 20 years of experience in engineer- ing, project management, management consultancy, and business development. He holds an MSc degree in chemical engineering from the University of Aveiro, Portugal, and a Professional Doctorate in Engineering degree from Delft University of Technology, the Netherlands. Email: Tiago.Vilela@avantium.com
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