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three phase fluidized bed ppt

three phase fluidized bed ppt

Three phase fluidization - SlideShare

2014-3-9  Three Phase Fluidization • The three-phase fluidized bed is a type of system that can be used to carry out variety of multiphase chemical reactions. In this type of system, gas and liquid are passed through a granular solid material at velocities high enough to suspend the solid in a fluidized

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fluidized bed reactor for wastewater treatment ppt

The Performance of a Three-Phase Fluidized Bed Reactor 221 fed in during a period of three days until reaching 18 L/h. Fluidized bed reactors can be considered as an improvement over the traditional water treatment methods associated with Fenton oxidation for pollutant degradation. The anaerobic fluidized bed (AFB) team was created to work within the wastewater sub-team to operate and analyze bench

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Fluidized bed reactor – an overview - SlideShare

2016-11-6  Mole Balance on the bubble, the Cloud, and the Emulsion 23 O Material balance will be written over an incremental height ∆𝑧 for substance A in each of the three phases (bubble, cloud, and emulsion) Figure : Section of a bubbling fluidized bed. 24.

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CFD Simulation of Hydrodynamics of Three Phase

2010-6-11  Application of three phase fluidized bed 3 1.4. Drawbacks of fluidized bed 4 1.5. Modes of operation of gas-liquid-solid fluidized bed and flow regimes 4 1.6. Variables affect the quality of fluidization 5 1.7. Complexion of three phase system 5 1.8. Present work 6 1.9. Thesis Layout 6 ...

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Fluidization and fluidized bed - SlideShare

2015-11-24  Fluidization refers to those Gas-Solids and Liquid-Solids system in which the solid phase is subjected to behave more or less like a Fluid by the upwelling current of gas or liquid stream moving through the bed of solid particles. Fluidized bed combustion and Catalytic cracking of heavy crude-oil fractions of petroleum are the two good examples of Fluidization.

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Behaviour of Three Phase Fluidized Bed with Regular

2012-5-12  The present work is focussed on understanding the hydrodynamic behaviour in a three phase fluidized bed. Experiments were performed in a fluidized bed of height 1.4 m with diameter of 0.1 m. Trial experiments were performed with 2.18 mm glass beads to check proper functioning of the fluidized bed system.

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Development of a three-phase fluidized bed reactor

2010-1-1  A three-phase fluidized reactor (TFBR) was designed, built and operated to examine the fluidization characteristics and oxygen transfer rates. With the solids hold-up of 0.5, the TFBR demonstrated homogenous fluidization with the water and air superficial velocities in the ranges, 0.005–0.203 and 0.8–2.0 cm/s, respectively.

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GAS HOLDUP IN A THREE-PHASE FLUIDIZED BED WITH

2010-4-12  phase: gas holdup (εG) liquid holdup (εL), and solid holdup (εS) in the three phase fluidized bed: εG +εL +εS =1 (1) g( G G L L S S) HE P = ρ ε +ρε +ρε Δ (2) SACHE MS S ρ ε = (3) The expanded bed height, HE in Eq. (2) and (3) is obtained either visually or from the measured pressure drop gradient10. A more direct method of measuring gas holdup is to simply isolate a representative

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The performance of a three-phase fluidized bed

An experimental study was carried out aiming to evaluate the performance of a three-phase fluidized bed bioreactor (FBBR) used to treat milk wastewater. In this study three different concentrations of milk wastewater substrate (462, 825 and 1473 mg O 2 /L) were tested. Using the same number of support particles, the results demonstrate that the average efficiency of COD removal decreased as the

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Introduction to Fluidization - AIChE

2014-11-21  gasoline and fluidized-bed reactors for making phthalic anhydride debuted in the 1940s. Today, about three-quarters of all polyolefins are made by a fluidized-bed process. The development of a specialized zeolite catalyst for cracking heavy oil into various fractions enabled the com-mercialization of the FCC circulating fluidized bed. In this

Get Price

fluidized bed reactor for wastewater treatment ppt

The Performance of a Three-Phase Fluidized Bed Reactor 221 fed in during a period of three days until reaching 18 L/h. Fluidized bed reactors can be considered as an improvement over the traditional water treatment methods associated with Fenton oxidation for pollutant degradation. The anaerobic fluidized bed (AFB) team was created to work ...

Get Price

CFD Simulation of Hydrodynamics of Three Phase

2010-6-11  Application of three phase fluidized bed 3 1.4. Drawbacks of fluidized bed 4 1.5. Modes of operation of gas-liquid-solid fluidized bed and flow regimes 4 1.6. Variables affect the quality of fluidization 5 1.7. Complexion of three phase system 5 1.8. Present work 6 1.9. Thesis Layout 6 ...

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Behaviour of Three Phase Fluidized Bed with Irregular ...

2012-5-11  1.1 Gas-Liquid-Solid Fluidized Bed A gas-liquid-solid fluidized bed is a batch of solid particles suspended in a column by insertion of liquid and gas. In recent years, gas-liquid-solid fluidizing beds have developed as one of the most promising means for three phase operations. They

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Behaviour of Three Phase Fluidized Bed with Regular

2012-5-12  1.2 Advantages of Fluidized Bed Three-Phase Fluidized bed has proved to be better than conventional reactors and has got many advantages like. It can maintain uniform temperature. Bed plugging and channelling can be reduced due to the movement of solids. Pressure drop is less due to which pumping cost can be reduced etc.

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Introduction to Fluidization - AIChE

2014-11-21  gasoline and fluidized-bed reactors for making phthalic anhydride debuted in the 1940s. Today, about three-quarters of all polyolefins are made by a fluidized-bed process. The development of a specialized zeolite catalyst for cracking heavy oil into various fractions enabled the com-mercialization of the FCC circulating fluidized bed. In this

Get Price

The performance of a three-phase fluidized bed

An experimental study was carried out aiming to evaluate the performance of a three-phase fluidized bed bioreactor (FBBR) used to treat milk wastewater. In this study three different concentrations of milk wastewater substrate (462, 825 and 1473 mg O 2 /L) were tested. Using the same number of support particles, the results demonstrate that the ...

Get Price

GAS HOLDUP IN A THREE-PHASE FLUIDIZED BED WITH

2010-4-12  The gas holdup characteristics in a cocurrent three-phase fluidized bed with liquid as continuous phase and gas as the discontinuous phase have been studied. Air, water and ceramic raschig rings are used as the gas, liquid and solid phases respectively. The experiments were carried out in a 0.1 m internal diameter, 1.88 m

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Stochastic analysis of a three‐phase fluidized bed ...

Three-phase fluidized beds have played important roles in various areas of chemical and biochemical processing. The characteristics of such beds are highly stochastic due to the influence of a variety of phenomena, including the jetting and bubbling of the fluidizing medium and the motion of the fluidized

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FLUIDIZATION - SlideShare

2016-10-13  4. Fluidization in vertical column. 5. In a packed bed of small particles, when a fluid enters at sufficient velocity from the bottom and passes up through the particles, the particles are pushed upward and the bed expands and becomes fluidized. 6. The Graph: (01)Superficial velocity VS Pressure drop (02)Superficial velocity VS Bed

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(PDF) Gas holdup in a three-phase magneto-fluidized

Chemical Engineering Science 54 (1999) 5273}5278 Gas holdup in a three-phase magneto-#uidized bed R. L. Sonolikar!,*, G. V. Butley!, S. Pentu Saheb" !Department of Chemical Engineering, Laxminarayan Institute of Technology, Nagpur-10, Maharashtra, India "National Environmental Engineering Research Institute, Nagpur, India Abstract The in#uence of magnetic "eld on local gas holdup, e and ...

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Fluidization - SlideShare

2015-12-23  Fluidized bed granulation As fluidized bed granulator have a same design as that of fluidized bed dryer the powder particles are fluidized in a stream of air, but in addition granulation fluid to be sprayed from nozzle on the bed of powders. ... Three phase fluidization

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CFD Simulation of Hydrodynamics of Three Phase

2010-6-11  Application of three phase fluidized bed 3 1.4. Drawbacks of fluidized bed 4 1.5. Modes of operation of gas-liquid-solid fluidized bed and flow regimes 4 1.6. Variables affect the quality of fluidization 5 1.7. Complexion of three phase system 5 1.8. Present work 6 1.9. Thesis Layout 6 ...

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Behaviour of Three Phase Fluidized Bed with Irregular ...

2012-5-11  1.1 Gas-Liquid-Solid Fluidized Bed A gas-liquid-solid fluidized bed is a batch of solid particles suspended in a column by insertion of liquid and gas. In recent years, gas-liquid-solid fluidizing beds have developed as one of the most promising means for three phase operations. They

Get Price

Introduction to Fluidization - AIChE

2014-11-21  gasoline and fluidized-bed reactors for making phthalic anhydride debuted in the 1940s. Today, about three-quarters of all polyolefins are made by a fluidized-bed process. The development of a specialized zeolite catalyst for cracking heavy oil into various fractions enabled the com-mercialization of the FCC circulating fluidized bed. In this

Get Price

CFD Analysis of Phase Holdup Behaviour in a Three Phase ...

2017-2-1  Keywords: Three phase fluidized bed, phase holdup, CFD . v CONTENTS CERTIFICATE ii ACKNOWLEDGEMENT iii ABSTRACT iv CONTENTS v LIST OF FIGURES viii LIST OF TABLES x NOMENCLATURE xi CHAPTER 1 INTRODUCTION 1.1 Gas-liquid-solid fluidized bed 1 1.2 Advantages of Gas-liquid-solid fluidized bed 2 ...

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Stochastic analysis of a three‐phase fluidized bed ...

Three-phase fluidized beds have played important roles in various areas of chemical and biochemical processing. The characteristics of such beds are highly stochastic due to the influence of a variety of phenomena, including the jetting and bubbling of the fluidizing medium and the motion of the fluidized

Get Price

FLUIDIZATION - SlideShare

2016-10-13  4. Fluidization in vertical column. 5. In a packed bed of small particles, when a fluid enters at sufficient velocity from the bottom and passes up through the particles, the particles are pushed upward and the bed expands and becomes fluidized. 6. The Graph: (01)Superficial velocity VS Pressure drop (02)Superficial velocity VS Bed

Get Price

(PDF) Gas holdup in a three-phase magneto-fluidized

Chemical Engineering Science 54 (1999) 5273}5278 Gas holdup in a three-phase magneto-#uidized bed R. L. Sonolikar!,*, G. V. Butley!, S. Pentu Saheb" !Department of Chemical Engineering, Laxminarayan Institute of Technology, Nagpur-10, Maharashtra, India "National Environmental Engineering Research Institute, Nagpur, India Abstract The in#uence of magnetic "eld on local gas holdup, e and ...

Get Price

Optimization of gas parameters in a three-phase fluidized bed ...

2020-7-3  The gas parameters, including gas holdup, bubble diameter and bubble specific surface area flux, of a three-phase fluidized bed flotation column (TFC) have been systematically studied. According to the characteristics of each stage of flotation the TFC ...

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Effect of surfactants on three-phase fluidized bed ...

1990-5-1  Fluid Dynamic Studies in Support of an Industrial Three-Phase Fluidized Bed Hydroprocessor. The Canadian Journal of Chemical Engineering 2003 , 81 (3-4) , 338-350.

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Behaviour of Three Phase Fluidized Bed with Irregular ...

2012-5-11  1.1 Gas-Liquid-Solid Fluidized Bed A gas-liquid-solid fluidized bed is a batch of solid particles suspended in a column by insertion of liquid and gas. In recent years, gas-liquid-solid fluidizing beds have developed as one of the most promising means for three phase operations. They

Get Price

Fluidization - SlideShare

2015-12-23  Fluidized bed granulation As fluidized bed granulator have a same design as that of fluidized bed dryer the powder particles are fluidized in a stream of air, but in addition granulation fluid to be sprayed from nozzle on the bed of powders. ... Three phase fluidization

Get Price

CFD Simulation of Hydrodynamics of Three Phase

2010-6-11  Application of three phase fluidized bed 3 1.4. Drawbacks of fluidized bed 4 1.5. Modes of operation of gas-liquid-solid fluidized bed and flow regimes 4 1.6. Variables affect the quality of fluidization 5 1.7. Complexion of three phase system 5 1.8. Present work 6 1.9. Thesis Layout 6 ...

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[PDF] Modeling and Simulation of Three Phase

DOI: 10.7763/IJBBB.2012.V2.144 Corpus ID: 56464242. Modeling and Simulation of Three Phase Fluidized Bed Characteristics Using MATLAB @article{Sivalingam2012ModelingAS, title={Modeling and Simulation of Three Phase Fluidized Bed Characteristics Using MATLAB}, author={A. Sivalingam and T. Kannadasan and M. Thirumarimurugan and D. Prabhakaran}, journal={International Journal of

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FLUIDIZATION - SlideShare

2016-10-13  4. Fluidization in vertical column. 5. In a packed bed of small particles, when a fluid enters at sufficient velocity from the bottom and passes up through the particles, the particles are pushed upward and the bed expands and becomes fluidized. 6. The Graph: (01)Superficial velocity VS Pressure drop (02)Superficial velocity VS Bed

Get Price

Flow regimes of the three‐phase circulating fluidized

Three-phase fluidized-bed bioreactors generally use light and small particles (Berk et al., 1984). Circulating operation can promote solids mixing and increase product throughput per unit bed cross section, while high shear stress can promote biofilm renewal (Pirozzi et al., 1990).

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(PDF) Gas holdup in a three-phase magneto-fluidized

Chemical Engineering Science 54 (1999) 5273}5278 Gas holdup in a three-phase magneto-#uidized bed R. L. Sonolikar!,*, G. V. Butley!, S. Pentu Saheb" !Department of Chemical Engineering, Laxminarayan Institute of Technology, Nagpur-10, Maharashtra, India "National Environmental Engineering Research Institute, Nagpur, India Abstract The in#uence of magnetic "eld on local gas holdup, e and ...

Get Price

Optimization of gas parameters in a three-phase fluidized bed ...

2020-7-3  The gas parameters, including gas holdup, bubble diameter and bubble specific surface area flux, of a three-phase fluidized bed flotation column (TFC) have been systematically studied. According to the characteristics of each stage of flotation the TFC ...

Get Price

[PDF] Three-Phase Mathematical Model of

The developed mathematical model takes into account the hydrodynamics of the fluidized bed, the contact of droplets with particles and their adhesion to the surface, as well as the kinetics of drying the solution on the surface of the particles. When creating a model, the process of dewatering and granulation in a fluidized bed is considered as a heterogeneous three-phase process, during which ...

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Effect of surfactants on three-phase fluidized bed ...

1990-5-1  Fluid Dynamic Studies in Support of an Industrial Three-Phase Fluidized Bed Hydroprocessor. The Canadian Journal of Chemical Engineering 2003 , 81 (3-4) , 338-350.

Get Price