THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Dmitry Pashchenko

,

Maria Gnutikova

THERMODYNAMIC ANALYSIS OF CARBON FORMATION CONDITIONS IN A STEAM METHANE REFORMING PROCESS

ABSTRACT
Thermodynamic equilibrium analysis of the steam methane reforming process to synthesis gas was studied. For this purpose, the system of chemical reactions for carbon production and consumation as well as other side reaction in the steam methane reforming process were analysed. The material balance and the equations of law mass action were obtained for various chemical reactions. The system of those equations were solved by dichotomy method. The investigation was performed for a wide range of operational conditions such as a temperature, pressure, and inlet steam-to-methane ratio. The results obtained, with the help of developed algorithms, were compared with the results obtained via different commercial and open-source programs. All results are in excellent agreement. The operational conditions for the probable formation of carbon were determined. It was established that for the temperature range above 1100 K the probability of carbon formation is absent for steam-to-methane ratio above units. The presented algorithm of thermodynamic analysis gives an appearance of the dependence of the product composition and the amount of required heat from operating conditions such as the temperature, pressure and steam-to-methane ratio.
KEYWORDS
methane, Steam methane reforming, hydrogen, thermodynamic analysis, thermodynamic analysis, heat balance
PAPER SUBMITTED: 2019-04-04
PAPER REVISED: 2020-03-18
PAPER ACCEPTED: 2020-03-18
PUBLISHED ONLINE: 2020-04-04
DOI REFERENCE: https://doi.org/10.2298/TSCI190404136P
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 5, PAGES [3643 - 3954]
REFERENCES
  1. Diglio, G., et al., Techno-economic analysis of sorption-enhanced steam methane reforming in a fixed bed reactor network integrated with fuel cell, Journal of Power Sources, 364 (2017), pp. 41-51.
  2. Tran, A., et al., Cfd modeling of a industrial-scale steam methane reforming furnace, Chemical Engineering Science.
  3. Nobandegani, M. S., et al., An industrial steam methane reformer optimization using response surface methodology, Journal of Natural Gas Science and Engineering, 36 (2016), pp. 540-549.
  4. Taji, M., et al., Real time optimization of steam reforming of methane in an industrial hydrogen plant, International Journal of Hydrogen Energy, 43 (29) (2018), pp. 13110-13121.
  5. Pashchenko, D., Effect of the geometric dimensionality of computational domain on the results of cfd-modeling of steam methane reforming, International Journal of Hydrogen Energy, 43 (18) (2018), pp. 8662-8673.
  6. Chen, J., et al., Computational fluid dynamics modeling of the millisecond methane steam reforming in microchannel reactors for hydrogen production, RSC Advances, 8 (44) (2018), pp. 25183-25200.
  7. Inbamrung, P., et al., Modeling of a square channel monolith reactor for methane steam reforming, Energy, 152 (2018), pp. 383-400.
  8. Shin, G., et al., Thermal design of methane steam reformer with low- temperature non-reactive heat source for high efficiency engine-hybrid stationary fuel cell system, International Journal of Hydrogen Energy, 42 (21) (2017), pp. 14697-14707.
  9. Lei, L., et al., Thermodynamic and experimental assessment of proton conducting solid oxide fuel cells with internal methane steam reforming, Applied Energy, 224 (2018), pp. 280-288.
  10. Wang, B., et al., A theoretical framework for multiphysics modeling of methane fueled solid oxide fuel cell and analysis of low steam methane reforming kinetics, Applied energy, 176 (2016), pp. 1-11.
  11. Pashchenko, D. Combined methane reforming with a mixture of methane combustion products and steam over a Ni-based catalyst: An experimental and thermodynamic study. Energy, 185 (2019), pp 573-584.
  12. Pashchenko, D., Energy optimization analysis of a thermochemical exhaust gas recuperation system of a gas turbine unit, Energy Conversion and Management, 171 (2018), pp. 917-924.
  13. Pashchenko, D., First law energy analysis of thermochemical waste-heat recuperation by steam methane reforming, Energy, 143 (2018), pp. 478-487.
  14. Pashchenko D., Gnutikova M., Karpilov I. Comparison study of thermochemical waste-heat recuperation by steam reforming of liquid biofuels. International Journal of Hydrogen Energy, 45(2020), pp. 4174-4181.
  15. Olmsted, G.P., Heat engine efficiency enhancement-through chemical recovery of waste heat, 7th Intersociety Energy Conversion Engg. Con (1972), pp. 241-248.
  16. Gaber, C., et al., An experimental study of a thermochemical regeneration waste heat recovery process using a reformer unit, Energy, 155 (2018), pp. 381-391.
  17. Lutz, A. E., et al., Thermodynamic analysis of hydrogen production by steam reforming, International Journal of Hydrogen Energy, 28 (2) (2003), pp. 159-167.
  18. Pashchenko, D., Thermodynamic equilibrium analysis of combined dry and steam reforming of propane for thermochemical waste-heat recuperation, International Journal of Hydrogen Energy, 42 (22) (2017), 14926-14935.
  19. Ozkara-Aydınoglu, S., Thermodynamic equilibrium analysis of combined carbon dioxide reforming with steam reforming of methane to synthesis gas, international journal of hydrogen energy, 35 (23) (2010), pp. 12821-12828.
  20. Xu, J., Froment, G. F., Methane steam reforming, methanation and watergas shift: I. intrinsic kinetics, AIChE Journal, 35 (1) (1989), pp. 88-96.
  21. Hou, K., Hughes, R., The kinetics of methane steam reforming over a ni/αal2o catalyst, Chemical Engineering Journal, 82 (1) (2001), pp. 311-328.
  22. Wang, H., et al., Steam methane reforming on a ni-based bimetallic catalyst: density functional theory and experimental studies of the catalytic consequence of surface alloying of ni with ag, Catalysis Science & Technology, 7 (8) (2017), pp. 1713-1725.
  23. Yoon, Y., et al., Enhanced catalytic behavior of ni alloys in steam methane reforming, Journal of Power Sources, 359 (2017), pp. 450-457.
  24. Watanabe, F., et al., Influence of nitrogen impurity for steam methane reforming over noble metal catalysts, Fuel Processing Technology, 152 (2016), pp. 15-21.
  25. Kumar, A., et al., A physics-based model for industrial steam-methane reformer optimization with non-uniform temperature field, Computers & Chemical Engineering, 2017
  26. Herce, C., et al., Computationally efficient cfd model for scale-up of bubbling fluidized bed reactors applied to sorption-enhanced steam methane reforming, Fuel Processing Technology, 167 (2017), pp. 747-761.
  27. Jeong, A., et al., Effectiveness factor correlations from simulations of washcoat nickel catalyst layers for small-scale steam methane reforming applications, International Journal of Hydrogen Energy.
  28. Settar, A., et al., Effect of inert metal foam matrices on hydrogen production intensification of methane steam reforming process in wall-coated reformer, International Journal of Hydrogen Energy, 43 (27) (2018), pp. 12386-12397.
  29. Simpson, A. P., Lutz, A. E., Exergy analysis of hydrogen production via steam methane reforming, International Journal of Hydrogen Energy, 32 (18) (2007), pp. 4811-4820.
  30. Rosen, M., Thermodynamic investigation of hydrogen production by steammethane reforming, International Journal of Hydrogen Energy, 16 (3) (1991), pp. 207-217.
  31. Belov, G. V., et al.,Ivtanthermo for windowsdatabase on thermodynamic properties and related software, Calphad, 23 (2) (1999), pp. 173-180.
  32. Gurvich, L., et al., Ivtanthermoa thermodynamic database and software system for the personal computer, NIST Special Database 5.
  33. Wang, H., et al., Thermodynamic analysis of hydrogen production from glycerol autothermal reforming, International journal of hydrogen energy, 34 (14) (2009), pp. 5683-5690.
  34. Pashchenko, D., Thermochemical recovery of heat contained in flue gases by means of bioethanol conversion, Thermal Engineering, 60 (6) (2013), pp. 438-443.
  35. Sun, Y., et al., Thermodynamic analysis of mixed and dry reforming of methane for solar thermal applications, Journal of Natural Gas Chemistry, 20 (6) (2011), pp. 568 - 576.
PDF VERSION [DOWNLOAD]
Thermodynamic analysis of carbon formation conditions in a steam methane reforming process

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence