Design of a Reactor for Converting Syngas to Liquid Fuel in a Fixed-Bed Multi-Tube Compact Reactor: Experimental Study on Catalyst Kinetics and Design for Co/Al2O3 Catalyst

Document Type : Original Article

Authors
Mohammad Irani
Yahya Zamani
Scientific Faculty Member, Gas Research Division, Research Institute of Petroleum Industry (RIPI), Postal Code: 1485613111, Tehran, Iran
Abstract
One of the new technologies used in the process of converting natural gas into liquid fuel is GTL (compact reactor). This reactor has many advantages compared to the reactors used, which can be considered due to the small diameter of the reactor, temperature runaway does not occur in it. and the reactor used in the laboratory scale is scale up in a compact manner and for high capacities it is used in a modular approach. The catalyst used in the compact reactor must be have more activity than conventional catalysts. In this research, the kinetics of the above-mentioned catalyst was obtained by conducting experimental design. Catalyst size, the diameter of the single-tube reactor was obtained. Finally, considering the hydrodynamic design considerations, the 19-tube compact reactor was designed to produce 6 liters per day. After examining different cases, the design of the 19-tube reactor was selected, taking into account all considerations, with a triangular arrangement in a cylindrical module with a diameter of 50 mm.
Keywords
Fischer-Tropsch synthesis
Kinetics
Multi-tubular fixed-bed
Compact reactor and design
Subjects
  1. U.S.E.I.A. (EIA), The Annual Energy Outlook (2012).
  2. A.d. Klerk, Y.W. Li, R. Zennaro, Fischer–Tropsch Technology, in: P.M. Maitlis, A.d. Klerk (Eds.) Greener Fischer-Tropsch Processes for Fuels and Feedstocks, Wiley-VCH Verlag GmbH & Co, Weinheim, Germany, 2013, https://doi.org/10.1002/9783527656837.ch3
  3. Todic, V.V. Ordomsky, N.M. Nikacevic, A.Y. Khodakov, D.B. Bukur, Opportunities for intensification of Fischer-Tropsch synthesis through reduced formation of methane over cobalt catalysts in microreactors, Catalysis Science & Technology, 5 (2015) 1400-1411https://doi.org/10.1039/C4CY01547A.
  4. Mousavi, A. Zamaniyan, M. Irani, M. Rashidzadeh, Generalized kinetic model for iron and cobalt based Fischer–Tropsch synthesis catalysts: Review and model evaluation, Applied Catalysis A: General, 506 (2015) 57-66https://doi.org/10.1016/j.apcata.2015.08.020.
  5. M.E. Dry, The Fischer–Tropsch process: 1950–2000, Catalysis Today, 71 (2002) 227-241https://doi.org/10.1016/S0920-5861(01)00453-9.
  6. Schulz, Short history and present trends of Fischer–Tropsch synthesis, Applied Catalysis A: General, 186 (1999) 3-12https://doi.org/10.1016/S0926-860X(99)00160-X.
  7. I.C. Yates, C.N. Satterfield, Hydrocarbon selectivity from cobalt Fischer-Tropsch catalysts, Energy & Fuels, 6 (1992) 308-314https://doi.org/10.1021/ef00033a011.
  8. R.A. Dictor, A.T. Bell, Fischer-Tropsch synthesis over reduced and unreduced iron oxide catalysts, Journal of Catalysis, 97 (1986) 121-136https://doi.org/10.1016/0021-9517(86)90043-6.
  9. T.J. Donnelly, C.N. Satterfield, Product distributions of the Fischer-Tropsch synthesis on precipitated iron catalysts, Applied Catalysis, 52 (1989) 93-114https://doi.org/10.1016/S0166-9834(00)83375-8.
  10. N.O. Egiebor, W.C. Cooper, The polyfunctionality of iron catalysts during carbon monoxide hydrogenation I. Occurrence of dual chain propagation sites, Applied Catalysis, 14 (1985) 323-332https://doi.org/10.1016/S0166-9834(00)84363-8.
  11. G.P. Van Der Laan, A.A.C.M. Beenackers, Kinetics and Selectivity of the Fischer–Tropsch Synthesis: A Literature Review, Catalysis Reviews, 41 (1999) 255-318https://doi.org/10.1081/CR-100101170.
  12. Todic, W. Ma, G. Jacobs, B.H. Davis, D.B. Bukur, Effect of process conditions on the product distribution of Fischer–Tropsch synthesis over a Re-promoted cobalt-alumina catalyst using a stirred tank slurry reactor, Journal of Catalysis, 311 (2014) 325-338https://doi.org/10.1016/j.jcat.2013.12.009.
  13. Stamenić, V. Dikić, M. Mandić, B. Todić, D.B. Bukur, N.M. Nikačević, Multiscale and Multiphase Model of Fixed Bed Reactors for Fischer–Tropsch Synthesis: Intensification Possibilities Study, Industrial & Engineering Chemistry Research, 56 (2017) 9964-997910.1021/acs.iecr.7b02467.
  14. Jess, C. Kern, Modeling of Multi-Tubular Reactors for Fischer-Tropsch Synthesis, Chemical Engineering & Technology, 32 (2009) 1164-1175doi:10.1002/ceat.200900131.
  15. Todic, T. Bhatelia, G.F. Froment, W. Ma, G. Jacobs, B.H. Davis, D.B. Bukur, Kinetic Model of Fischer–Tropsch Synthesis in a Slurry Reactor on Co–Re/Al2O3 Catalyst, Industrial & Engineering Chemistry Research, 52 (2013) 669-679https://doi.org/10.1021/ie3028312.
  16. Philippe, M. Lacroix, L. Dreibine, C. Pham-Huu, D. Edouard, S. Savin, F. Luck, D. Schweich, Effect of structure and thermal properties of a Fischer–Tropsch catalyst in a fixed bed, Catalysis Today, 147 (2009) S305-S312https://doi.org/10.1016/j.cattod.2009.07.058.
  17. I.C. Yates, C.N. Satterfield, Intrinsic kinetics of the Fischer-Tropsch synthesis on a cobalt catalyst, Energy & Fuels, 5 (1991) 168-173https://pubs.acs.org/doi/abs/10.1021/ef00025a029.
  18. Sadeqzadeh, J. Hong, P. Fongarland, D. Curulla-Ferré, F. Luck, J. Bousquet, D. Schweich, A.Y. Khodakov, Mechanistic Modeling of Cobalt Based Catalyst Sintering in a Fixed Bed Reactor under Different Conditions of Fischer–Tropsch Synthesis, Industrial & Engineering Chemistry Research, 51 (2012) 11955-1196410.1021/ie3006929.
  19. F.G. Botes, J.W. Niemantsverdriet, J. van de Loosdrecht, A comparison of cobalt and iron based slurry phase Fischer–Tropsch synthesis, Catalysis Today, 215 (2013) 112-120https://doi.org/10.1016/j.cattod.2013.01.013.
  20. M.A. Vannice, The catalytic synthesis of hydrocarbons from H2CO mixtures over the group VIII metals: I. The specific activities and product distributions of supported metals, Journal of Catalysis, 37 (1975) 449-461https://doi.org/10.1016/0021-9517(75)90181-5.

  • Receive Date 24 September 2024
  • Revise Date 22 October 2024
  • Accept Date 02 December 2024