Cornelius E. Agu
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View article: A New Classical Two Parameter Asymmetric Probability Distribution: Properties and Application
A New Classical Two Parameter Asymmetric Probability Distribution: Properties and Application Open
In this paper, the record is set straight on the technique for the development of classical distributions, where a new model called the Sky-Log distribution is proposed as an illustrative example of the methodical approach. The statistical…
View article: Hydrophobic Treatment of Coconut Shell by Acetylation: Kinetics and Thermodynamic Studies.
Hydrophobic Treatment of Coconut Shell by Acetylation: Kinetics and Thermodynamic Studies. Open
Chemical modification of coconut shell using acetic anhydride has been investigated. Batch mode experiments were carried out to study the effects of time, temperature and catalyst on extent of acetylation. The kinetic data obtained at diff…
View article: Investigation of Bubble Properties in a Bubbling Fluidized-Bed Gasification Reactor Using a Computational Particle Fluid Dynamic Model
Investigation of Bubble Properties in a Bubbling Fluidized-Bed Gasification Reactor Using a Computational Particle Fluid Dynamic Model Open
The conversion efficiency, operation, and design of bubbling fluidized bed (BFB) reactors depend on the bed dynamics behavior, which is significantly influenced by the bubble properties. To establish the best operating condition for effici…
View article: A new Approach for Scaling Up from a Small Cold to a Large Hot Bed for Biomass Conversion in a Bubbling Fluidized Bed Reactor
A new Approach for Scaling Up from a Small Cold to a Large Hot Bed for Biomass Conversion in a Bubbling Fluidized Bed Reactor Open
Bubbling fluidized beds are simple and attractive means of achieving efficient conversion of biomass if particle segregation and the associated effects are minimized.To improve the knowledge of fluidized bed reactor design, this paper comp…
View article: Assessment of Combustion and Gasification Behavior in a Bubbling Fluidized Bed Reactor: A Comparison between Biomass with and without Chemical Additives
Assessment of Combustion and Gasification Behavior in a Bubbling Fluidized Bed Reactor: A Comparison between Biomass with and without Chemical Additives Open
During the storage of biogenic materials for energy utilization, destructions by microbial attacks are inevitable. Besides material degradation, self-ignition of wood chip piles also occurs consistently. Treating the feedstock with, for ex…
View article: Effect of Superficial Gas Velocity on Bubbling Fluidized Bed Behaviour in a Biomass Gasifier
Effect of Superficial Gas Velocity on Bubbling Fluidized Bed Behaviour in a Biomass Gasifier Open
This study investigates the behaviour of bubbling fluidized beds in biomass gasification processes based on the variation of superficial gas velocity at different temperatures and air flowrates.In the paper, the operating window is defined…
View article: Detailed One-Dimensional Model for Steam-Biomass Gasification in a Bubbling Fluidized Bed
Detailed One-Dimensional Model for Steam-Biomass Gasification in a Bubbling Fluidized Bed Open
A one-dimensional unsteady state model is developed for simulation of biomass gasification in a bubbling fluidized bed. The proposed model accounts for the effect of hydrodynamic behavior of the fluidized bed by incorporating the momentum …
View article: Measurement and characterization of biomass mean residence time in an air-blown bubbling fluidized bed gasification reactor
Measurement and characterization of biomass mean residence time in an air-blown bubbling fluidized bed gasification reactor Open
Gasification of biomass in bubbling fluidized beds can be limited by accumulation of unconverted char particles during the process. The amount of unconverted biomass depends on the residence time of the fuel particles. This study demonstra…
View article: Prediction of void fraction and minimum fluidization velocity of a binary mixture of particles: Bed material and fuel particles
Prediction of void fraction and minimum fluidization velocity of a binary mixture of particles: Bed material and fuel particles Open
For operational control and design of a fluidized bed reactor containing different types of solid particles, the bed void fraction and minimum fluidization velocity are vital parameters. This paper demonstrates a method for predicting the …
View article: Proceedings of The 60th SIMS Conference on Simulation and Modelling SIMS 2019, August 12-16, Västerås, Sweden
Proceedings of The 60th SIMS Conference on Simulation and Modelling SIMS 2019, August 12-16, Västerås, Sweden Open
The 60th SIMS conference on Simulation and Modelling (SIMS 2016) was held in cooperation with ICAE, 11th International Conference of Applied Energy in Våsteräs, Sweden.This was the 60th time for the conference SIMS.It was held the first ti…
View article: Behaviour of biomass particles in a bubbling fluidized bed: A comparison between wood pellets and wood chips
Behaviour of biomass particles in a bubbling fluidized bed: A comparison between wood pellets and wood chips Open
For successful operation and design of a bubbling fluidized bed reactor handling a specific biomass, in-depth knowledge about the bed behaviour is paramount. This study compares the behaviour of a bed of sand containing wood pellets with t…
View article: Bubbling Fluidized Bed Behaviour for Biomass Gasification
Bubbling Fluidized Bed Behaviour for Biomass Gasification Open
The need to cut down the high dependency on the fossil fuels requires sustainable alternative energy resources. Aside that the stock of fossil fuels is depreciable, the energy source also accounts for the major contribution of greenhouse g…
View article: Simulation of Bubbling Fluidized Bed using a One-Dimensional Model Based on the Euler-Euler Method
Simulation of Bubbling Fluidized Bed using a One-Dimensional Model Based on the Euler-Euler Method Open
The behaviour of a fluidized bed can be modeled based on the Euler-Euler approach.This method has been fully utilized in both three-dimensional (3D) and twodimensional (2D) systems for obtaining, for example, the axial and radial distribut…
View article: Distribution of Solids in a Fluidized Bed Operated without a Gas Distributor
Distribution of Solids in a Fluidized Bed Operated without a Gas Distributor Open
Despite several advantages of a gas distributor, there are also some challenges in its application.Using a gas distributor increases the fluidizing gas compression cost.Due to deposition of fine particles and product of chemical corrosion,…
View article: Improved models for predicting bubble velocity, bubble frequency and bed expansion in a bubbling fluidized bed
Improved models for predicting bubble velocity, bubble frequency and bed expansion in a bubbling fluidized bed Open
An efficient design and operational control of a fluidized bed reactor relies on accurate prediction of bubble properties. This paper employs measurement of bed void fraction in determining the bubble velocity in a given bed. An analytical…
View article: Evaluation of drag models for CFD simulation of fluidized bed biomass gasification
Evaluation of drag models for CFD simulation of fluidized bed biomass gasification Open
Gasification of biomass into suitable feedstock has become a feasible alternative technology for reducing the use of energy feedstock from fossil sources.Usually, fluidized bed technology is used in the biomass gasification reactor.Optimiz…
View article: Algorithm with improved accuracy for real-time measurement of flow rate in open channel systems
Algorithm with improved accuracy for real-time measurement of flow rate in open channel systems Open
Most methods for flow rate measurement in open channels usually have low accuracy over a range of flow rates due to varying fluid properties, flow conditions and channel length. This paper suggests an algorithm to improve on the accuracy o…
View article: Determination of onset of bubbling and slugging in a fluidized bed using a dual-plane electrical capacitance tomography system
Determination of onset of bubbling and slugging in a fluidized bed using a dual-plane electrical capacitance tomography system Open
For a successful application of fluidized beds in chemical reactions and solids circulation, the boundary of regime of operation such as bubbling and slugging regimes, needs to be clearly defined. This study provides a method for determini…