Denitrogenation of middle distillates using adsorbent materials towards ULSD production: A review

Georgina C. Laredo, Pedro M. Vega-Merino, Fernando Trejo-Zárraga, Jesús Castillo

Research output: Contribution to journalReview articlepeer-review

123 Scopus citations

Abstract

A review of the state of art in the denitrogenation process of middle distillates using adsorbent materials is discussed. More stringent environmental laws enforce refiners to produce cleaner fuels from heavy feeds. Sulfur compounds reduce fuel quality and release pollutants to the atmosphere by which its elimination is mandatory. Typical hydrodesulfurization (HDS) catalytic processes in refineries are limited to meet the required specifications for Ultra Low Sulfur Diesel (ULSD) and new processes and materials need to be developed. Removal of nitrogen compounds (N-compounds) from real feedstocks improves sulfur elimination because irreversible adsorption of N-compounds on acidic sites in HDS catalysts may be avoided. Research and development during the last decade is reviewed in this work, including results obtained with different types of N-compounds, adsorptive systems and adsorbents commercially available.

Original languageEnglish
Pages (from-to)21-32
Number of pages12
JournalFuel Processing Technology
Volume106
DOIs
StatePublished - Feb 2013

Keywords

  • Adsorbents
  • Adsorption
  • Middle distillates
  • Nitrogen
  • ULSD

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