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CFD modeling and experimental validation of biomass fast pyrolysis in a conical spouted bed reactor
; ; ; ; López Zabalbeitia, Gartzen 
; Olazar Aurrecoechea, Martin (Elsevier, 2020-12-31)
; Olazar Aurrecoechea, Martin (Elsevier, 2020-12-31)
[EN] A 2D Euler-Euler multiphase computational fluid dynamics (CFD) model in conjunction with the kinetic theory of granular flow (KTGF) was applied to describe the biomass pyrolysis in a spouted bed reactor. The primary ...
Pyrolysis of plastic wastes in a fountain confined conical spouted bed reactor: determination of stable operating conditions
; ; López Zabalbeitia, Gartzen ; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2020-12-31)
; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2020-12-31)
[EN] The performance of both fluidized and spouted bed reactors in the pyrolysis of waste plastics is conditioned by particle agglomeration phenomena, which worsen the quality of the gas-solid contact and eventually lead ...
Bed symmetry in the fountain confined conical spouted beds with open-sided draft tubes
; ; Achutegui Narbona, Aitor ; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2022-05-13)
; ; ; Olazar Aurrecoechea, Martin (Elsevier, 2022-05-13)
Bed symmetry has been analysed in fountain confined conical spouted beds operating with fine particles. Thus, vertical particle velocities and the spout shape have been determined in a wide range of spouting air velocities ...
Cost-effective upgrading of biomass pyrolysis oil using activated dolomite as a basic catalyst
(Elsevier B.V., 2019-07-19)
This study deals with a continuous process on a calcined dolomite operating at atmospheric pressure and by cofeeding
water for cost-effective upgrading of raw bio-oil at 400 °C and 500 °C. The distribution of carbon in ...
Hydrogen Pressure as a Key Parameter to Control the Quality of the Naphtha Produced in the Hydrocracking of an HDPE/VGO Blend
; ; ; Arandes Esteban, José María ; Gutiérrez Lorenzo, Alazne (MDPI, 2022-05-16)
; Gutiérrez Lorenzo, Alazne (MDPI, 2022-05-16)
The hydrocracking of high-density polyethylene (HDPE) blended with vacuum gas oil (VGO) has been studied to assess the effect of H2 pressure on the yield and composition of the products and with the aim of obtaining ...
Investigation of hot char catalytic role in the pyrolysis of waste tires in a two-step process
Wang, Fengchao; Gao, Ningbo; Quan, Cui; López Zabalbeitia, Gartzen (Elsevier, 2019-12-30)
(Elsevier, 2019-12-30)
[EN] This study pursues the valorization of waste tires by pyrolysis using a different approach for tire parts, specifically, the tire tread rubber and side wall rubber. Tire tread rubber was used to produce hot char with ...
Conditions for the joint conversion of CO2 and syngas in the direct synthesis of light olefins using In2O3−ZrO2/SAPO-34 catalyst
; ; ; Aguayo Urquijo, Andrés Tomás ; (ACS, 2021-11-09)
; (ACS, 2021-11-09)
The conditions for promoting the joint conversion of CO2 and syngas in the direct synthesis of light olefins have been studied. In addition, given the relevance for the viability of the process, the stability of the ...
Kinetic modeling and reactor design of the direct synthesis of dimethyl ether for CO2 valorization. A review
; ; ; Aguayo Urquijo, Andrés Tomás ; (Elsevier, 2022-08-04)
; (Elsevier, 2022-08-04)
The direct synthesis of dimethyl ether (DME) is considered one of the most attractive routes for valorizing CO2 and syngas on a large scale. DME has a high cetane number and its properties are similar to those of liquefied ...
New trends in catalysis for sustainable CO2 conversion
(MDPI, 2022-10-23)
Over the past few decades, there have been many advances in the world, leading to improvements in quality of life. Due to demographic and industrial growth, consumption has increased, as well as the amount of waste and ...
Experimental implementation of a catalytic membrane reactor for the direct synthesis of DME from H2+CO/CO2
; ; ; ; ; Aguayo Urquijo, Andrés Tomás ; (Elsevier, 2021-01-05)
; (Elsevier, 2021-01-05)
The direct synthesis of dimethyl ether (DME) by the hydrogenation of CO2 and CO2/COx mixtures has been studied in an original packed bed membrane reactor (PBMR). The role of the hydrophilic LTA zeolite membrane is to remove ...