Hydrodesulfurization and hydroconversion of heavy FCC gasoline on PtPd/H-USY zeolite

Szabolcs Magyar, Jeno Hancsók, Dénes Kalló

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25 Citations (Scopus)

Abstract

In the search for catalysts suitable for upgrading fractions of FCC gasoline, PtPd/USY zeolite was investigated. The objectives of the work were to reduce simultaneously the sulfur, nitrogen and aromatic contents of heavy FCC gasoline having various sulfur (30-203 ppmw) and 28 ppmw nitrogen contents. The process conditions were the following: temperature: 200-300 °C; pressure: 30 bar; liquid hourly space velocity: 1.0-3.0 h-1; H 2/hydrocarbon ratio: 500 m3/m3. The results indicated that PtPd/H-USY zeolite catalyst can be applied for the desulfurization of heavy FCC gasoline up to 203 ppm sulfur content. When a base heavy FCC gasoline fraction of 30 ppmw sulfur content was used the catalyst was able to reduce the aromatic content by 14 abs.% as well as sulfur and nitrogen contents to <1 ppmw in one step. Blending calculations were made to evaluate the quality of a full range FCC gasoline obtained by mixing the desulfurized heavy FCC gasoline and the untreated light cut.

Original languageEnglish
Pages (from-to)1151-1164
Number of pages14
JournalFuel processing technology
Volume86
Issue number11
DOIs
Publication statusPublished - Jul 25 2005

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Keywords

  • Alkene hydrogenation
  • Aromatic saturation
  • FCC gasoline
  • Hydrodesulfurization
  • Pt,Pd/USY zeolite

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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