Forecasting the catalyst activity of diesel fuel dewaxing at the industrial unit using the mathematical model

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This paper considers the process of catalytic dewaxing of petroleum derived middle distillates on the bifunctional Ni-based catalyst. The process is aimed at production of low-freezing, low-sulfur diesel fuels suitable for application in cold weather conditions. The method of mathematical modelling is applied in the current research. The mathematical model was developed taking into account thermos-dynamic and kinetic laws of the dewaxing process as well as factors influencing catalyst deactivation. The model is sensitive to the feedstock composition and technological conditions change in a wide range. The dewaxing catalyst deactivation degree was estimated using the operational data of the industrial catalytic dewaxing unit, and the calculations were conducted with the developed non-stationary mathematical model of the catalytic dewaxing process. The mechanism of bifunctional dewaxing catalyst deactivation was described. With the non-stationary mathematical model, the fore-cast accuracy and optimizing calculations of the dewaxing process temperature mode were carried out depending on the feed composition and catalyst activity.

Original languageEnglish
Pages (from-to)729-735
Number of pages7
JournalPetroleum and Coal
Issue number5
Publication statusPublished - 1 Jan 2017



  • Catalyst
  • Cold filter plugging point
  • Deactivation
  • Dewaxing
  • Diesel fuel
  • Mathematical model

ASJC Scopus subject areas

  • Energy(all)

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