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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

Enhancement of Aromatic Hydro-Upgrading on a Pt Catalyst by Promotion with Pd and Shape-Selective Support

by Gutierrez, Arandes, Castaño, Olazar, Bilbao
Fuel Process. Technol. Year: 2012

Abstract

The effect of the composition of the metallic function (Pt and Pt–Pd) and acid function (HUSY and Hβ zeolites) in the catalysts has been studied in the hydrocracking of LCO in the 350–400 °C range. The remaining operating conditions are: 50 bar; H2/LCO molar ratio (nH2), 8.90 molH2 (molLCO)− 1; space velocity (WHSV), 4 h− 1; time on stream (TOS), 0–24 h. The reaction indices studied are the conversions of hydrocracking and hydrodesulphurization and the yields of naphtha, medium distillates, LPG and dry gases. It has been proven that the metallic function, the acidity of the acid function and temperature increase give way to an increase in the activity remaining in the catalyst in the pseudo-stable state (subsequent to deactivation for 5 h time on stream). Likewise, these conditions enhance the production of naphtha and medium distillates with a lower content of aromatics and a higher one of paraffins and naphthenes. Pt–Pd/HY catalyst is very stable and has a high capacity for producing naphtha and medium distillates at 400 °C.

Keywords

HPC HCE W2C