Results 1 to 10 of about 116 (112)

A Methodology for Measuring the Heat Release Efficiency in Bubbling Fluidised Bed Combustors

open access: yesEnergies, 2020
Differences in the densities of bed material and—especially biogenic—solid fuels prevent an ideal mixture within bubbling fluidised bed (BFB) combustors. So, the presence of fuel particles is usually observed mainly near the surface of the fluidised bed.
Dominik Müller   +2 more
doaj   +3 more sources

Bubbling Gas Fluidised Beds As Chemical Reactors

open access: yesCHIMIA, 1977
This paper is based on a lecture given on 27 April 1977 to the Chemical Society of Zurich. It describes the principal physical features of a bubbling gas fluidised bed and how these affect performance of the system when it is used as a gas/solid ...
P.N. Rowe
doaj   +2 more sources

CFD-simulation of gas-solid flow in bubbling fluidized bed reactor [PDF]

open access: yesE3S Web of Conferences, 2022
The hydrodynamic behaviour of gas-solid flow has been studied in a two-dimensional bubbling fluidized bed reactor filled with particles of 275 µm in size, using computational fluid dynamics (CFD).
El ajouri Oumaima   +2 more
doaj   +1 more source

Techno-Economic Evaluation of Biological and Fluidised-Bed Based Methanation Process Chains for Grid-Ready Biomethane Production

open access: yesFrontiers in Energy Research, 2022
Three different power-to-methane process chains with grid injection in two scales (1 MWel and 6 MWel) were analysed regarding their investment and operation cost. The process chains were based on biological or catalytic bubbling fluidised bed methanation
Andreas Gantenbein   +4 more
doaj   +1 more source

Computational Fluid Dynamics (CFD) modelling of the effect of distributor plate geometry in the bubbling fluidized bed reactor

open access: yesSouth African Journal of Chemical Engineering, 2023
Air distribution is the primary factor that influences the performance of fluidized beds. To understand the hydrodynamics and operation of a fluidized bed, an assessment of the airflow and its distribution is essential.
Ntsitlola F. Nthatisi, AF Van Der Merwe
doaj   +1 more source

Artificial neural network models for heat transfer in the freeboard of a bubbling fluidised bed combustion system

open access: yesCase Studies in Thermal Engineering, 2023
The heat transfer in the combustion chamber (freeboard) of a fluidised bed combustor is of critical importance, due to the need for thermal efficiency, the possible environmental impacts, and the increasing costs of fuel and electricity.
Nimeti Doner   +3 more
doaj   +1 more source

Techno-Economic Analysis of Thermochemical Conversion of Waste Masks Generated in the EU during COVID-19 Pandemic into Energy Products

open access: yesEnergies, 2023
During the COVID-19 pandemic, more than 24 billion pieces of surgical mask waste (WM) were generated in the EU region, with an acute shortage of their management and recycling.
Samy Yousef   +2 more
doaj   +1 more source

Thermodynamic Analysis of Biomass Gasification Using Aspen Plus: Comparison of Stoichiometric and Non-Stoichiometric Models

open access: yesEnergies, 2021
The gasification process involves several reactions that occur simultaneously and are interrelated by several independent variables. Simulation tools can help us to understand the process behaviour and predict the efficiency and final composition of the ...
María Pilar González-Vázquez   +4 more
doaj   +1 more source

Tailored Syngas Production from the Gasification of Biogenic Waste in the Presence of a CO2 Sorbent

open access: yesChemical Engineering Transactions, 2020
Syngas production via steam gasification is one of the thermochemical processes with the greatest potential for obtaining synthetic fuels from a solid fuel, especially indirect gasification in a dual fluidised bed system where the energy needed for ...
Isabel Martinez   +4 more
doaj   +1 more source

Dynamical and technological consequences of multiple isolas of steady states in a catalytic fluidised-bed reactor

open access: yesChemical and Process Engineering, 2017
Steady-state characteristics of a catalytic fluidised bed reactor and its dynamical consequences are analyzed. The occurrence of an untypical steady-state structure manifesting in a form of multiple isolas is described.
Bizon Katarzyna
doaj   +1 more source

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