Effect of Distributor Design on Temperature Profiles in Fluidized Bed During the Combustion of Rice Husk

Rao, K. V. N. Srinivasa; Reddy, G. Venkat

doi:10.1080/00102200701244702

Cited by 12 publications

(4 citation statements)

References 3 publications

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“…The percentage opening area, or some might refer it as perforated ratio, is calculated by dividing the total number of holes area over the distributor area. The effect of distributor plates on the distribution of temperature profiles along the axis of the combustion chamber during the combustion of low density rice husk fuels in a fluidized bed was studied in [6]. Two different distributors with perforated ratios of 2.6% and 7.6% were tested.…”

Section: (I) Perforated Plate Distributormentioning

confidence: 99%

“…flow motion in a combustion chamber. Constant axial temperature profiles were recorded along the height of SFBC that reflects effectiveness of the combustion by using annular inclined distributor; in contrast to the inconsistent axial temperature profile recorded during the combustion of rice husk in [6] using a perforated plate distributor. It is thus anticipated that the swirling distributor holds promise for industrial fluidized bed applications.…”

Section: Wwwetasrcom Shukrie Et Al: Air Distributor Designs For Fluidized Bed Combustors: a Reviewmentioning

confidence: 99%

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Air Distributor Designs for Fluidized Bed Combustors: A Review

Shukrie

Anuar

Oumer

2016

Eng. Technol. Appl. Sci. Res.

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Fluidized bed combustion (FBC) has been recognized as one of the suitable technologies for converting a wide variety of biomass fuels into energy. One of the key factors affecting the successful operation of fluidized bed combustion is its distributor plate design. Therefore, the main purpose of this article is to provide a critical overview of the published studies that are relevant to the characteristics of different fluidized bed air distributor designs. The review of available works display that the type of distributor design significantly affects the operation of the fluidized bed i.e., performance characteristics, fluidization quality, air flow dynamics, solid pattern and mixing caused by the direction of air flow through the distributors. Overall it is observed that high pressure drop across the distributor is one of the major draw backs of the current distributor designs. However, fluidization was stable in a fluidized bed operated at a low perforation ratio distributor due to the pressure drop across the distributor, adequate to provide uniform gas distribution. The swirling motion produced by the inclined injection of gas promotes lateral dispersion and significantly improves fluidization quality. Lastly, the research gaps are highlighted for future improvement consideration on the development of efficient distributor designs.

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Section: (I) Perforated Plate Distributormentioning

confidence: 99%

Section: Wwwetasrcom Shukrie Et Al: Air Distributor Designs For Fluidized Bed Combustors: a Reviewmentioning

confidence: 99%

Air Distributor Designs for Fluidized Bed Combustors: A Review

Shukrie

Anuar

Oumer

2016

Eng. Technol. Appl. Sci. Res.

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“…Previous studies have also looked at the effect of parameters such as fluidising velocity and feed rate on temperature J o u r n a l P r e -p r o o f distribution for two different multiorifice distributors. [12] The increasing amount of computing power through the last years has facilitated the increased adoption of computational fluid dynamics (CFD) simulations in granular research generally, and in particular in the modell ing of fluidised beds [13][14][15][16]. Regarding distributor plates, the main focus of the simulations lies on hydrodynamics [17], outlet velocity distribution [18] and bubble forming behaviour [19] for different distributor designs and hole arrangements.…”

Section: Introductionmentioning

confidence: 99%

Effect of distributor design on particle distribution in a binary fluidised bed

et al. 2020

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Link to publication on Research at Birmingham portal General rightsUnless a licence is specified above, all rights (including copyright and moral rights) in this document are retained by the authors and/or the copyright holders. The express permission of the copyright holder must be obtained for any use of this material other than for purposes permitted by law.• Users may freely distribute the URL that is used to identify this publication.• Users may download and/or print one copy of the publication from the University of Birmingham research portal for the purpose of private study or non-commercial research.• User may use extracts from the document in line with the concept of 'fair dealing' under the Copyright, Designs and Patents Act 1988 (?) • Users may not further distribute the material nor use it for the purposes of commercial gain.Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document.When citing, please reference the published version. Take down policyWhile the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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“…The fluidized beds are being used in combustion, gasification, drying, heating and catalytic cracking, surface treatment, surface coating, gas separation, mass transfer, etc. (Rao et al, 2007;Jangam et al, 2009;Kulkarni and Joshi, 2011). However, presence of moving parts, higher pressure drops across the distributor plate, insufficient gas-solid interactions, inappropriate mixing of bed materials, poor processing of different shapes and sizes and complex hydrodynamics are the major drawbacks of the conventional fluidized beds.…”

Section: Introductionmentioning

confidence: 99%

Image velocimetry and statistical analysis of a mesh-coupled axial blade distributor for mass transfer in a swirling bed

Javed¹,

Shukrullah²,

Naz³

et al. 2020

Journal of Theoretical and Applied Mechanics

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A mesh-coupled axial blade distributor was tested for fluidization of particles in a swirling fluidized bed. The bed velocity was estimated experimentally using a high-speed imaging device and MATLAB supported particle image velocimetry (PIV). The bed velocity was also predicted statistically with a response surface analysis method. During statistical analysis, the confidence interval of bed velocity remained between 0.49485 and 0.49998. The bed velocity was measured about 0.49741 m/s and 0.538 m/s through experimental and statistical methods, respectively. The experimental and statistical analysis revealed similar bed weights and superficial velocities with a slight difference of 6.4 • in blade angles.

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Effect of Distributor Design on Temperature Profiles in Fluidized Bed During the Combustion of Rice Husk

Cited by 12 publications

References 3 publications

Air Distributor Designs for Fluidized Bed Combustors: A Review

Air Distributor Designs for Fluidized Bed Combustors: A Review

Effect of distributor design on particle distribution in a binary fluidised bed

Image velocimetry and statistical analysis of a mesh-coupled axial blade distributor for mass transfer in a swirling bed

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