A model of the dynamics of a fluidized bed combustor burning biomass

Galgano, Antonio; Salatino, Piero; Crescitelli, Silvestro; Scala, Fabrizio; Maffettone, Pier Luca

doi:10.1016/j.combustflame.2004.12.006

Cited by 26 publications

(9 citation statements)

References 16 publications

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“…In the literature there are various models of the dynamic behavior of the speed of a RICE [32]- [36]. In [34] propose a simple second-order system that considers the spark advance, the valve openings, and the load torque as input variables.…”

Section: Rice-generator Set Modelmentioning

confidence: 99%

Implementation of a frequency control in a biomass gasifier system

Muñoz

Ospino

Robles

et al. 2019

IJECE

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Distributed power generation has grown in popularity in recent years, especially in areas not connected to the national grid. As a result, rural microgrids are becoming more common, involving great potential for energy based on biomass conversion such as gasification. After analyzing distributed power generation facilities in developing countries, the authors found problems with the frequency stability. This paper focuses on solving the problem of frequency control in energy supplied by microgrids based in biomass gasification. For that purpose, the authors have developed a physical model of a downdraft gasifier, this model was used for design a novel strategy for frequency control, which has been based and validated on an existing gasification system, which supplies power to a population in Necoclí (Colombia).

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Section: Rice-generator Set Modelmentioning

confidence: 99%

Implementation of a frequency control in a biomass gasifier system

Muñoz

Ospino

Robles

et al. 2019

IJECE

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“…The model was used for the examination of the effects of the feeding configuration on the gas/solid two-phase flow, gas fluidization of solid particles (Toomey R. and Johnstone H. F., [6], 1952). The relaxation time of the bed was determined by the heat capacity of the fluidized solids and by the fraction of the heat released recycling to the bed as thermal feedback (Galgano et al, [7] and Boroduyla et al, [8]). Henceforth, in this work, the superficial velocity at inlet and the size of the particle are under consideration, which in turn affects the carbon conversion comprehensively.…”

Section: Introductionmentioning

confidence: 99%

CFD Analysis on Fluidized Bed Gasification of Rice Husk and Rice Straw

Singh¹,

Srivastava²

2017

OALib

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In the work being presented, computational fluid dynamics (CFD) analysis on fluidized bed gasification of rice husk has been carried out. The multiphase Eulerian model was undertaken in the analysis. Due to the lack of computational space, two dimensional models of fluidized bed were created. The objective of the investigation was to study the effect of variation on velocity with varying particle sizes. The quality of synthesis gas was also taken into account. The inlet's superficial velocity was varied from 0.2 m/s to 1.2 m/s and diameter of rice husk varied from 0.0438 mm to 4.38 mm. Based on obtained results, this may be concluded that minimum fluidization velocity decreases with increase in diameter of rice husk. The carbon conversion was found to be maximum for 0.7 m/s velocity and carbon conversion increased for other velocities up to 96.9%. The analysis was carried out using ANSYS FLUENT 14.0 non-commercial code. Subject AreasMechanical Engineering

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“…Experimental results of combustion of distinct biomass wastes in a fluidized bed combustor with silica as inert material have been presented by Premchart and Koupranov . Galgano et al presented a dynamic model of an atmospheric fluidized bed combustor using biomass. They used a bifurcation analysis method and concluded that extinction may take place through limit point bifurcations when varying the moisture of the biomass and the flow rates of feed or air.…”

Section: Introductionmentioning

confidence: 99%

Study of particle size distribution and oxygen mass balance in a bubbling fluidizing combustor using cotton stalk

Sharma

Mohapatra

2015

Asia-Pacific J Chem Eng

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Fluidized bed combustor is one out of the most popular techniques to utilize biomass wastes in agricultural states like Punjab, India. In this work, a three‐phase mathematical model, considering bubble growth along bed height, has been developed. The mathematical model has been used to find out certain key performance parameters like carbon utilization efficiency, bed carbon load and exit gas composition in a bubbling fluidized bed combustor using tuyre‐type distributor plate. The model predictions have been compared with 7.5 MW fluidized bed power plant using cotton stalk and are found to be in good agreement with plant data. © 2015 Curtin University of Technology and John Wiley & Sons, Ltd.

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A model of the dynamics of a fluidized bed combustor burning biomass

Cited by 26 publications

References 16 publications

Implementation of a frequency control in a biomass gasifier system

Implementation of a frequency control in a biomass gasifier system

CFD Analysis on Fluidized Bed Gasification of Rice Husk and Rice Straw

Study of particle size distribution and oxygen mass balance in a bubbling fluidizing combustor using cotton stalk

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