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Optimal design of alkane pyrolysis processes: propane pyrolysis

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Abstract

A two-stage optimal design procedure is suggested for alkane pyrolysis processes and is applied to propane pyrolysis. The first stage considers only hydrocarbon decomposition, the primary reaction in the process. A mathematical model consisting of an overall stoichiometric, an empirical rate, and a heat-balance and hydrodynamic equation is constructed. This model is analyzed for a varied tube diameter and a fixed propane conversion to optimize the design parameters of the propane pyrolysis reactor. At the second stage, the main reaction is considered together with secondary and tertiary reactions and a complete model taking into account recycling of the unreacted raw material is constructed. The optimum inlet temperature and recycle ratio are determined as a function of the total feed rate. An economic optimality criterion is suggested, and final process optimization is carried out.

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Translated from Teoreticheskie Osnovy Khimicheskoi Tekhnologii, Vol. 38, No. 6, 2004, pp. 693–698.

Original Russian Text Copyright © 2004 by Aliev, Tairov, Guseinova, Kalaushina, Shakhtakhtinskii.

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Aliev, A.M., Tairov, A.Z., Guseinova, A.M. et al. Optimal design of alkane pyrolysis processes: propane pyrolysis. Theor Found Chem Eng 38, 654–659 (2004). https://doi.org/10.1007/s11236-005-0041-4

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Keywords

  • Pyrolysis
  • Alkane
  • Pyrolysis Reactor
  • Propane Conversion
  • Economic Optimality