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Upgrading renewables, secondary, and waste streams through innovative hydroprocessing catalysts and reaction pathways

Problem statement

Hydroprocessing is a well-implemented and versatile refinery conversion strategy, comprising a wide array of reaction routes such as: (i) hydrotreating, aiming for the hydrogenation of unsaturated hydrocarbons and the removal (hydrogenolysis) of heteroatoms such as sulfur or nitrogen; (ii) hydrocracking, for promoting C–C bond scission and the partial saturation of aromatics; or (iii) hydrodeoxygenation, for the specific removal of oxygen moieties. In this project, we investigate the conversion of highly polyaromatic feedstock like heavy fuel oil (HFO), pyrolysis fuel oil (PFO), or bio-oils from different biomass sources (i.e., agricultural waste, algae) for quality improvement and obtaining products with higher added value.

We seek new (thermo-) catalytic strategies and improved heterogeneous catalysts with increased activity and stability. We put advanced analytical characterization techniques (i.e., nuclear magnetic resonance, high-res mass spectrometry) to work and combine their results with modeling and statistical tools.

Goals

  • Develop a quantitative analytical workflow to analyze and interpret these complex reacting environments
  • Explore novel renewable and waste resources to obtain chemicals and fuels
  • Deploy ad-hoc catalysts and process conditions to incorporate these wastes in the refinery (bio- and waste-refinery)
  • Analyze process dynamics and kinetics
HPC

Related People

Related Publications

Preliminary Studies on Fuel Production Through LCO Hydrocracking on Noble-Metal Supported Catalysts

by Gutierrez, Arandes, Castaño, Olazar, Bilbao
Fuel Year: 2012

Abstract

The upgrading of LCO (Light Cycle Oil), which is an aromatic stream from FCC units, has been studied in order to obtain naphtha and medium distillates. The catalysts used have metallic functions of Pd, Pt and Pt–Pd, supported on acid materials of different porous structure and different acidity (HY zeolites, Hβ zeolite, amorphous alumina and an FCC catalyst). The experiments have been carried out in an exothermic fixed bed reactor under the following conditions: 350 °C; 40–50 bar; H2/LCO molar ratio (nH2), 8.90, 10.00 and 30.23 molH2 (molLCO)−1; space velocity (WHSV), 1 and 4 h−1; time-on-stream, 24 h. The effect of catalyst composition and properties (porous structure and acidity) on conversion, yields of products fractions (dry gases, LPG, naphtha and medium distillates) and selectivity and composition of naphtha and medium distillate fractions has been determined. Pt/Hβ catalyst is suitable for maintaining a high selectivity of naphtha (75–80 wt.%) in a range of conversions between 85 and 95 wt.%. Pt/HY catalyst (SiO2/Al2O3 = 5) is the most suitable for producing medium distillates with a selectivity of 65 wt.% for a conversion of 85 wt.%. Pt/HY (SiO2/Al2O3 = 12) catalyst is efficient for obtaining naphtha and medium distillates with a lower content of aromatics. Pt–Pd bimetallic function is interesting for the catalyst to maintain a high conversion at the pseudostable state.

Keywords

HPC HCE W2C