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Mathematical Model and Modernization of the Process Flows of Methanol Extraction from Hydrocarbon Mixtures

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Abstract

Using a presented mathematical model of the extraction process in a turbulent co-current packed extractor and a thin-layer settler with a physical coagulator, calculations are made, apparatuses are designed, and the process flows of methanol extraction from hydrocarbon mixtures are modernized on the examples of the butane–butylene fraction (BBF), propane fraction (PF), and tert-amyl methyl ether mixture (TAME) in industrial petrochemical plants. Methanol is extracted with an aqueous phase introduced to a turbulent packed extractor. The aqueous phase is then separated from the hydrocarbon mixtures in thin-layer settlers with packed coagulators. Both the extractors and the settlers are packed with the Inzhekhim metal random packing, which provides high mass-transfer and separation performance. The industrial operation of the modernized process flows of methanol extraction shows that the co-current packed extractors and the thin-layer settlers ensure a high efficiency of the processes. For example, as a result of the modernization, annually, the yield of methanol from BBF has been increased by about 1000 t; from PF by about 3000 t; and from the TAME mixture by about 7560 tons of pure methanol.

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Funding

This work was supported by the Russian Science Foundation (project no. 18-79-101-36). https://rscf.ru/project/18-79-10136/.

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Authors and Affiliations

  1. Kazan State Power Engineering University, 420066, Kazan, Russia

    A. G. Laptev & K. A. Alekseev

  2. LLC EPC Inzhekihim, 420049, Kazan, Russia

    T. M. Farakhov

Authors
  1. A. G. Laptev
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  2. T. M. Farakhov
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  3. K. A. Alekseev
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Corresponding author

Correspondence to A. G. Laptev.

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Translated by V. Glyanchenko

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Laptev, A.G., Farakhov, T.M. & Alekseev, K.A. Mathematical Model and Modernization of the Process Flows of Methanol Extraction from Hydrocarbon Mixtures. Theor Found Chem Eng 56, 440–448 (2022). https://doi.org/10.1134/S0040579522040236

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