Deep desulfurization of heavy atmospheric gas oil with Co‒Mo‒Al catalysts effect of sulfur adsorption

D. Yitzhaki, M. V. Landau, D. Berger, M. Herskowitz

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18 Scopus citations

Abstract

The transient sulfur adsorption and reaction on partially sulfided and oxyregenerated Co{single bond}Mo{single bond}Al catalysts in the hydrodesulfurization of heavy atmospheric gas oil (HAGO) was studied in batch and trickle-bed reactors. All experiments were carried out at 360°C and 5.5 MPa. The contribution of sulfur adsorption to sulfur removal was significant in cases of 1000-1800 ppm sulfur in the feedstock. The sulfur level in hydrotreated HAGO was lowered by 50-350 ppm due to sulfur adsorption on the catalyst for periods of 20-50 h. The principle of regeneration and adsorption in a trickle bed has been proven. A model that describes the transient adsorption and reaction is proposed.

Original languageEnglish
Pages (from-to)99-110
Number of pages12
JournalApplied Catalysis A: General
Volume122
Issue number2
DOIs
StatePublished - 16 Feb 1995

Keywords

  • Adsorption
  • Gas oil
  • Heavy atmospheric gas oil
  • Hydrodesulphurization
  • Sulphur adsorption
  • Trickle bed

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