Prozesu Katalitikoak eta Hondakinen Balioztatzea

Ikerketa Taldea

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Abstract: Spouted beds are an interesting alternative for the treatment of biomass for energy purposes, given that the insertion of a draft-tube allows large-scale handling of solids with a wide range of sizes and diverse properties. The hydrodynamic correlations proposed in the literature have not been validated with particles of low density and shape factor. Therefore, a detailed...

In our recent work published in Catalysis Communications (Elsevier) together with the Department of Chemical Engineering in the University of Malaga, we have synthesised, characterised and tested a bifunctional catalyst for tire oil hydrocracking  The breakthrough of this work is to obtain a renewable support (phosphorous modified activated carbon prepared from olive stone) with very...

In our recent publication in Fuel Processing Technology (Elsevier) we have investigated the possibility of using waste petcoke to convert another waste like tire oil. Petcoke or petroleum is a carbonaceous solid delivered from oil refinery coker units or other thermal cracking processes like contact coking, fluid coking, flexicoking and delayed coking. On the other hand, tire oil is produced...

In our recent publication in Catalysis Science and Technology (RSC) we have studied the deactivation pathways of a zeolite H-ZSM-5 catalyst containing bentonite and Al2O3 as binder material during the transformation of chloromethane into light olefins, which is considered limiting in the 2-stage valorisation process of methane (natural gas): methane - cloromethane - light olefins. The...

The 7 10^6 t of waste tires that are generated yearly represent for a potential source of fuels considering its composition, rich in C and H, and its chemical features. Waste tires can be recycled through several processes aiming for either material, energy, or chemical product recovery. In this work we review the current status of these valorization pathways, with a particular focus on...

Abstract: Continuous pyrolysis of polystyrene has been studied in a conical spouted bed reactor with the main aim of enhancing styrene monomer recovery. Thermal degradation in a thermogravimetric analyser was conducted as a preliminary study in order to apply this information in the pyrolysis in the conical spouted bed reactor. The effects of temperature and gas flow rate in the conical...

The oil produced from the pyrolysis of tires is a potential alternative fuel. However, its high concentration of sulfur, aromatics and heavy hydrocarbons hinders its usage. We have already proved that tire oil can be upgraded in a sequential hydrotreating (Fuel) and hydrocracking (Energy & Fuels) process. Now we have modeled the removal of the three components (sulfur, aromatics and heavy...

Abstract: The thermodynamic analysis of the steam reforming (under catalytic steam reforming conditions) of a simulated bio-oil (composed of model compounds of components in a real bio-oil) and of ethanol is performed by minimization of Gibb's free energy method with Pro II-Simsci® 8.3 software, and their results are compared. At the equilibrium conditions both oxygenated feeds are...

El próximo 27 de noviembre a las 11:30 en el Salón de Grados de la ZTF-FCT, Itsaso Barbarias defenderá la Tesis Doctoral titulada "Proceso de pirólisis y reformado en línea para la producción de H2 a partir de residuos plásticos", realizada bajo la dirección de los Prof. Martin Olazar y Javier Bilbao.

Abstract: Coke deposition pathways have been studied during the fluid catalytic cracking of bio-oil, vacuum gasoil (VGO) and a blend of the previous two (80 wt% VGO and 20 wt% bio-oil), under realistic riser conditions of the fluid catalytic cracking (FCC) unit, using a commercial catalyst at 500 °C and contact times of 1.5–10 s. Amount and composition of soluble and insoluble coke in...