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Determination of yield distribution in olefin production by thermal cracking of atmospheric gasoil

Korean Journal of Chemical Engineering volume 25, pages 681–692 (2008)Cite this article

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Abstract

A pilot plant was designed and set up to study the thermal cracking of atmospheric gasoil. Based on the CCD (central composite design) method, a set of systematic experiments were designed and carried out. The designed variables were COT (coil outlet temperature), steam ratio and feed flow rate. The ranges of these variables were, respectively, equal to 716–884 °C, 0.46–1.136 and 0.977–6.02 g/min. The obtained minimum and maximum yield of ethylene was, respectively, equal to 1.7% and 30.9%, as well as the maximum yield of propylene was 12.2%. To predict the yield distribution of products and the coke formation in the range of operating conditions, a mechanistic model was developed based on experimental results. To analyze and characterize the atmospheric gasoil, a novel algorithm was applied. This algorithm utilized density, ASTM distillation curve, H/C ratio and the total aromatic fraction and generates the detail analysis of feedstock including paraffinic, naphthenic, aromatics and poly aromatic compounds.

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Authors and Affiliations

  1. Chemical Engineering Department, Faculty of Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran, Iran

    Sorood. Zahedi. Abghari, Jafar. Towfighi. Darian, Ramin. Karimzadeh & Mohammad Reza Omidkhah

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  1. Sorood. Zahedi. Abghari
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  2. Jafar. Towfighi. Darian
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  3. Ramin. Karimzadeh
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  4. Mohammad Reza Omidkhah
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Correspondence to Sorood. Zahedi. Abghari.

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Abghari, S.Z., Darian, J.T., Karimzadeh, R. et al. Determination of yield distribution in olefin production by thermal cracking of atmospheric gasoil. Korean J. Chem. Eng. 25, 681–692 (2008). https://doi.org/10.1007/s11814-008-0112-4

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  • DOI: https://doi.org/10.1007/s11814-008-0112-4

Key words

  • Thermal Cracking
  • Atmospheric Gasoil
  • Feed Characterization
  • Modeling
  • Experimental Design