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The Role of Fluid Catalytic Cracking in Process Optimisation for Petroleum Refineries

Authors: Chinwendu R. Nnabalu, Gioia Falcone, Imma Bortone

Abstract:

Petroleum refining is a chemical process in which the raw material (crude oil) is converted to finished commercial products for end users. The fluid catalytic cracking (FCC) unit is a key asset in refineries, requiring optimised processes in the context of engineering design. Following the first stage of separation of crude oil in a distillation tower, an additional 40 per cent quantity is attainable in the gasoline pool with further conversion of the downgraded product of crude oil (residue from the distillation tower) using a catalyst in the FCC process. Effective removal of sulphur oxides, nitrogen oxides, carbon and heavy metals from FCC gasoline requires greater separation efficiency and involves an enormous environmental significance. The FCC unit is primarily a reactor and regeneration system which employs cyclone systems for separation.  Catalyst losses in FCC cyclones lead to high particulate matter emission on the regenerator side and fines carryover into the product on the reactor side. This paper aims at demonstrating the importance of FCC unit design criteria in terms of technical performance and compliance with environmental legislation. A systematic review of state-of-the-art FCC technology was carried out, identifying its key technical challenges and sources of emissions.  Case studies of petroleum refineries in Nigeria were assessed against selected global case studies. The review highlights the need for further modelling investigations to help improve FCC design to more effectively meet product specification requirements while complying with stricter environmental legislation.

Keywords: Design, emissions, fluid catalytic cracking, petroleum refineries.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3346696

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References:


[1] S. A. Kalota, I. I. Rahmim, and H. Expertech Consulting Inc., Irvine and E-MetaVenture, Inc., “Solve the Five Most Common FCC Problems,” in AIChE Spring National Meeting, 2003, no. 1.
[2] Kuo R., Tan A., and BASF Corp., “Troubleshooting catalyst losses in the FCC unit,” Adv. Catal. Technol., 2017.
[3] M. Kraxner, T. Frischmann, T. Kofler, M. Pillei, and American Institute of Chemical Engineers, “An Empirical Comparison of Two Different Cyclone Designs in the Usage of a Third Stage Separator,” in 8th World Congress on Particle Technology, 2018.
[4] H. Dries, M. Patel, N. Van Dijk, and T. N. Shell Global Solutions International BV Amsterdam, “New Advances in Third-Stage Separators,” in Updates on Process Technology, 2000.
[5] Climate and Clean Air Coalition, “Cleaning up the Global On-road Diesel fleet - A global strategy to introduce low sulphur fuels and cleaner diesel vehicles,” 2016.
[6] S. Haridoss, “A Study on Role of Catalyst used in Catalytic Cracking process in Petroleum Refining,” Int. J. ChemTech Res., vol. 10, no. 7, pp. 79–86, 2017.
[7] A. A. Avidan and R. Shinnar, “Development of Catalytic Cracking Technology. A Lesson in Chemical Reactor Design,” Ind. Eng. Chem. Res., vol. 29, no. 6, pp. 931–942, 1990.
[8] C. I. C. Pinheiro et al., “Fluid catalytic cracking (FCC) process modeling, simulation, and control,” Ind. Eng. Chem. Res., vol. 51, no. 1, pp. 1–29, 2012.
[9] J. Laine and D. L. Trimm, “Conversion of heavy oils into more desirable feedstocks,” J. Chem. Technol. Biotechnol., vol. 32, no. 7–12, pp. 813–833, 1982.
[10] B. Bonser, “Refining Process,” SlidePlayer.com Inc., 2019. (Online). Available: https://slideplayer.com/user/4247183/. (Accessed: 13-Apr-2019).
[11] G. A. Somorjai, “Catalysis and Surface Science,” Reprint., H. Heinemann and G. A. Somorjai, Eds. Routledge, 2017, pp. 16–17.
[12] M. R. Riazi, S. Eser, S. S. Agrawal, and J. L. P. Díez, “Petroleum Refining and Natural Gas Processing,” in Petroleum Refining and Natural Gas Processing, 2013, pp. 135–136.
[13] K. A. Couch and L. M. Wolschlag, “Upgrade FCC performance - Part 1,” Hydrocarb. Process., vol. 89, no. 9, pp. 57–65, 2010.
[14] H. Dries, Shell Global Solutions International, R. McAuley, and Shell UK Oil Products, “FCC cyclones – a vital element in profitability,” in NPRA, 2000, pp. 21–27.
[15] S. Catalano et al., “Cyclones / Hydrocyclones,” Visual Encyclopedia of Chemical Engineering. The Regents of the University of Michigan and its licensors, pp. 1–6, 2018.
[16] T. M. Knowlton, “Cyclone Systems in Circulating Fluidized Beds,” in 12th International Conference on Fluidized Bed Technology, 2017, vol. 005, pp. 47–64.
[17] P. H. S. Amos A. Avidan, Frederick J. Krambeck Mobil Research & Development Corp. Paulsboro, N.J. Hartley Owen and N. J. Mobil Research & Development Corp., Princeton, “FCC Closed-cyclone System Eliminates Post-Riser Cracking,” Oil Gas J., vol. 88, no. 13, 1990.
[18] R. J. Glendinning, H. L. McQuiston, and ABB Lummus Global, “Direct-coupled cyclone and feed injection,” Digit. Refin., p. 2, 1996.
[19] J. W. Mcternan and I. Abu-Mahfouz, “A Computational Fluid Dynamics Study of Fluid Catalytic Cracking Cyclones,” in COMSOL Conference, 2014.
[20] G. Sun, J. Chen, and M. Shi, “Optimization and Application of Reverse-flow Cyclones,” China Particuology, vol. 3, pp. 43–46, 2005.
[21] J. Gimbun, T. G. Chuah, T. S. Y. Choong, and A. Fakhru’l-Razi, “Prediction of the effects of cone tip diameter on the cyclone performance,” J. Aerosol Sci., vol. 36, no. 8, pp. 1056–1065, 2005.
[22] F. Kaya and I. Karagoz, “Numerical investigation of performance characteristics of a cyclone prolonged with a dipleg,” Chem. Eng. J., vol. 151, no. 1–3, pp. 39–45, 2009.
[23] E. Balestrin, R. K. Decker, D. Noriler, J. C. S. C. Bastos, and H. F. Meier, “An alternative for the collection of small particles in cyclones : Experimental analysis and CFD modeling,” Sep. Purif. Technol., vol. 184, pp. 54–65, 2017.
[24] K. Elsayed, “Design of a novel gas cyclone vortex finder using the adjoint method,” Sep. Purif. Technol., vol. 142, pp. 274–286, 2015.
[25] M. Wasilewski and L. Singh, “Optimization of the geometry of cyclone separators used in clinker burning process : A case study,” Powder Technol., vol. 313, pp. 293–302, 2017.
[26] F. Parvaz, S. H. Hosseini, G. Ahmadi, and K. Elsayed, “Impacts of the vortex finder eccentricity on the flow pattern and performance of a gas cyclone,” Sep. Purif. Technol., vol. 187, pp. 1–13, 2017.
[27] A. N. Huang et al., “Influence of a laminarizer at the inlet on the classification performance of a cyclone separator,” Sep. Purif. Technol., vol. 174, pp. 408–416, 2017.
[28] G. Zhang, G. Chen, and X. Yan, “Evaluation and improvement of particle collection efficiency and pressure drop of cyclones by redistribution of dustbins,” Chem. Eng. Res. Des., vol. 139, pp. 52–61, 2018.
[29] B. Zhao, “Development of a new method for evaluating cyclone efficiency,” Chem. Eng. Process. Process Intensif., vol. 44, no. 4, pp. 447–451, 2005.