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Mostrando ítems 11-20 de 21
Artículo
Thermochemical biorefinery based on dimethyl ether as intermediate: Technoeconomic assessment
(Elsevier, 2013)
Thermochemical biorefinery based on dimethyl ether (DME) as an intermediate is studied. DME is converted into methyl acetate, which can either be hydrogenated to ethanol or sold as a co-product. Considering this option ...
Artículo
Tar yield and composition from poultry litter gasification in a fluidised bed reactor: Effects of equivalence ratio, temperature and limestone addition
(Royal Society of Chemistry, 2019)
Air gasification of poultry litter was experimentally investigated in a laboratory scale bubbling fluidised bed gasifier. Gasification tests were conducted at atmospheric pressure using silica sand as the bed material. ...
Artículo
Change of existing circulating fluidized bed boilers to oxy-firing conditions for CO2 capture
(Elsevier, 2021-12)
This work investigates a circulating fluidized bed boiler, originally designed for air-firing, retrofitted to oxy-firing with the purpose of removing the CO2 emission from coal combustion. Previous studies have shown that ...
Artículo
Fluid dynamic analysis of dual fluidized bed gasifier for solar applications
(Elsevier B.V., 2021)
A hydrodynamic model of a dual fluidized bed gasifier (DFBG) is developed and its predictions are compared with measurements of solids flux and pressure profiles from a cold flow model (CFM). Then, the performance of a ...
Artículo
The effects of calcium and potassium on CO2 gasification of birch wood in a fluidized bed
(Elsevier, 2017)
Birch wood was leached of its naturally occurring ash forming elements and doped with three concentrations of calcium or potassium before being gasified in a laboratory bubbling fluidized bed reactor. The wood samples were ...
Artículo
Sustainability assessment of alternative waste-to-energy technologies for the management of sewage sludge
(Elsevier, 2023-03)
The management of sewage sludge still represents a challenge in the EU sustainability plan for biowaste. Although there are consolidated alternatives for the valorization of sewage sludge (incineration, pyrolysis ...
Artículo
Devolatilization of a single fuel particle in a fluidized bed under oxy-combustion conditions. Part B: Modeling and comparison with measurements
(Elsevier, 2015)
A detailed one-dimensional transient model is developed to describe the conversion of a single fuel particle in O2/N2 and O2/CO2 atmospheres in a fluidized bed (FB). The model takes into account the main relevant phenomena ...
Artículo
Design and performance analysis of a solar dual fluidized bed gasifier
(Elsevier, 2023-04)
The potential to conduct allothermal steam-gasification of biomass using a dual fluidized bed gasifier (DFBG) assisted by solar energy has already been conceptually proposed. In this paper the design and operation of a ...
Artículo
Gas–solid conversion in fluidised bed reactors
(Elsevier, 2008)
A simplified model for gas–solid reactions in fluidised bed (FB) is proposed. Such models already exist for catalytic gas–solid reactions (CGSRs), providing general description of the system in terms of main governing ...
Artículo
Kinetics of H₂S removal using alkaline residue as in-bed sorbent in fluidized bed gasification of biomass and wastes
(Elsevier, 2023-05)
The use of alkaline residue from the acetylene industry (carbide slag, CS) as in-bed sorbent to remove H₂S from syngas from biomass/waste fluidized bed (FB) gasification was investigated. Measurements were conducted in a ...