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Numerical analysis of gas flow dynamics of propane pyrolysis

https://doi.org/10.23947/1992-5980-2018-18-1-69-76

Abstract

Introduction. Homogeneous pyrolysis of propane is studied in a flow reactor with constant external heating. A numerical analysis of the results of simulating the gas flow in the reactor with account of chemical processes is required for a comprehensive study of the process under all kinds of conditions and for the control of the transition from laboratory facilities to the industrial ones. The results of the numerical modeling of the three-dimensional gas flow dynamics of propane pyrolysis in the reactor based on the ANSYS Fluent using a compact kinetic model are presented.

Materials and Methods. An acceptable size kinetic scheme of the pyrolysis of propane is proposed by the authors. The scheme is obtained using the methods of local and global sensitivity analysis of the model. The mathematical model used in the ANSYS Fluent package is given. The model is the equation of continuity, conservation of momentum, and conservation of energy, supplemented by the continuity equations for each gas component.

Research Results. The numerical simulation of the threedimensional dynamics of the gas flow of propane pyrolysis using the ANSYS Fluent software package and a compact kinetic model is carried out for the first time. Calculations of the gas flow dynamics of propane pyrolysis are conducted in the laboratory reactor with account of the diffusion processes, chemical reactions and their thermal effects. The numerical calculations results correlate well with the experimental studies on the conversion of propane.

Discussion and Conclusions. The results of the research and simulation of the propane pyrolysis can form the basis for describing the process in the reactor volume under the influence of the laser radiation.

About the Authors

I. M. Gubaydullin
Ufa State Petroleum Technological University; FASO Institute of Petrochemistry and Catalysis, FSBSI of UFRC, RAS
Russian Federation

Gubaydullin, Irek M., professor of the Oil and Gas Technology Department, Dr.Sci. (Phys.-Math.), associate professor 

450062, Ufa, ul. Kosmonavtov, 1



L. F. Nurislamova
Ufa State Petroleum Technological University
Russian Federation

Nurislamova, Liana F., associate professor at the Digital Technologies and Modeling Department, Cand.Sci. (Phys.-Math.) 

450062, Ufa, ul. Kosmonavtov, 1



References

1. Snytnikov, V.N., Mishchenko, T.I., Chernykh, I.G. Autocatalytic dehydrogenation of propane. Research on Chemical Intermediates, 2014, vol. 40, pp. 345−356.

2. Faua, G., Gascoina, N., Gillarda, P., Steelant, J. Methane pyrolysis: Literature survey and comparisons of available data for use in numerical simulations. Journal of Analytical and Applied Pyrolysis, 2013, vol. 104, pp. 1−9.

3. Bedarev, I., Parmon, V., Fedorov, A., Fedorova, N., Fomin, V. Numerical study of methane pyrolysis in shock waves. Combustion, Explosion, and Shock Waves, 2004 vol.40, pp. 580−590.

4. Khan, U., Bajohr, S., Buchholz, D., Reimert, R., Minh, H.D., Norinaga, K., Janardhanan, V.M., Tischer, S., Deutschmann, O. Pyrolysis of propane under vacuum carburizing conditions: An experimental and modeling study. J. Anal. Appl. Pyrolysis, 2008, vol. 81, pp. 148−156.

5. Nan, Z., Tong, Q., Bingzhen, C. CFD Simulation of Propane Cracking Tube Using Detailed Radical Kinetic Mechanism. Chinese Journal of Chemical Engineering, 2013, vol. 21, no. 12, pp. 1319−1331.

6. Ktalkherman, M.G., Namyatov, I.G., Emel’kim, V.A., Pozdnyakov. B.A. Investigation of high-temperature pyrolysis of propane in a fast-mixing reactor. High Temperature, 2009, vol. 47, pp. 707−717.

7. Stadnichenko, О.А., Snytnikov, V.N. Matematicheskoe modelirovanie potokov mnogokomponentnogo gaza s energoemkimi khimicheskimi protsessami na primere piroliza etana. [Mathematical modeling of multicomponent gas flows with energy intensive chemical processes by the example of ethane pyrolysis.] Numerical Methods and Programming, 2014, vol. 15, pp. 658–668 (in Russian).

8. Starik, A.M., Titova, N.S., Yanovskii, L.S. Kinetics of the oxidation of the products from the thermal destruction of C3H8 and C4H10 in the mixture with air. Kinet. Catal., 1999, vol. 40, no. 1, pp. 7−22.

9. Tomlin, A.S., Pilling, M.J., Merkin, J.H., Brindley, J., Burgess, N. Gough, A. Reduced mechanisms for propane pyrolysis. Ind. Eng. Chem. Res., 1995, vol. 34, pp. 3749−3760.

10. Zhorov, Y.M. Kinetika promyshlennykh organicheskikh reaktsiy: spravochnik. [Kinetics of Industrial Organic Reactions: Handbook.] Moscow: Khimiya, 1989, 384 p. (in Russian).

11. Mukhina, T.N., Barabanov, N.L., Babash, S.E., et al. Piroliz uglevodorodnogo syr'ya. [Pyrolysis of hydrocarbon feed]. Moscow: Khimiya, 1987, 240 p. (in Russian).

12. Nurislamova, L.F., Gubaydullin, I. M., Koledina, K.F. Kinetic Model of Isolated Reactions of the Catalytic Hydroalumination of Olefins. Reaction Kinetics, Mechanisms and Catalysis, 2015, vol. 116, iss.1, pp. 79−93.

13. Nurislamova, L.F., Gubaydullin, I.M., Koledina, K.F., Safin, R.R. Kinetic model of the catalytic hydroalumination of olefins with organoaluminum compounds. Reaction Kinetics, Mechanisms and Catalysis, 2016, vol. 117, iss. 1, pp. 1−14.

14. Nurislamova, L.F., Gubaydullin, I.M. Reduktsiya detal'nykh skhem khimicheskikh prevrashcheniy okislitel'nykh reaktsiy formal'degida i vodoroda na osnovanii rezul'tatov analiza chuvstvitel'nosti matematicheskoy modeli. [Reduction of detailed schemes for chemical transformations of formaldehyde and hydrogen oxidation reactions based on a sensitivity analysis of a mathematical model.] Numerical Methods and Programming, 2014, vol. 15, pp. 685–696 (in Russian).

15. Nurislamova, L.F., Stoyanovskaya, O.P., Stadnichenko, O.A., Gubaidullin, I.M., Snytnikov, V.N., Novichkova, A.V. Few-Step Kinetic Model of Gaseous Autocatalytic Ethane Pyrolysis and Its Evaluation by Means of Uncertainty and Sensitivity Analysis. Chemical Product and Process Modeling, 2014, no. 9(2), pp. 143−154.

16. Nurislamova, L.F., Gubaydullin, I.M. Issledovanie i redutsirovanie matematicheskoy modeli khimicheskoy reaktsii metodom Sobolya. [Research and reduction of mathematical model of chemical reaction by Sobol’ method.] Computer Research and Modeling, 2016, vol. 8, no. 4, pp. 633–646 (in Russian).

17. Nurislamova, L.F., Gubaydullin, I.M. Metodika polucheniya redutsirovannoy matematicheskoy modeli khimicheskoy reaktsii. [Techniques of obtaining reduced mathematical model of chemical reaction.] Control Systems and Information Technologies, 2014, vol. 57, no. 3.2, pp. 266–271 (in Russian).


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For citations:


Gubaydullin I.M., Nurislamova L.F. Numerical analysis of gas flow dynamics of propane pyrolysis. Vestnik of Don State Technical University. 2018;18(1):69-76. (In Russ.) https://doi.org/10.23947/1992-5980-2018-18-1-69-76

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