Gas-Solid Flow Applications for Powder Handling in Industrial Furnaces Operations

Vasconcelos, Paulo Douglas S. de; Mesquita, André Luiz Amarante

doi:10.5772/22393

Cited by 6 publications

(9 citation statements)

References 7 publications

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“…Fixed and a fluidized bed of particles at a minimum fluidization velocity – source: (Vasconcelos and Mesquita, 2011) 2 …”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

“…Based on the work of (Biswal et al , 2007) 9 and data for alumina fluoride obtained upon a thesis by (Vasconcelos, 2011) 10 for doctorate degree at Federal University of Pará, equation 12 was proposed to predict the minimum fluidization velocity.…”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

“…Permeameters used at Albras' laboratory to survey the minimum fluidization velocity of the powders used in the primary aluminum industry – source: (Vasconcelos, 2011) 10 .…”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

“…Experimental pressure drop in the bed of alumina fluoride – (72.6 +- 2.7) μm /3387.3 kg.m −3 versus superficial air velocity – source: (Vasconcelos, 2011) 10 .…”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

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Minimum and Full Fluidization Velocity for Alumina Used in the Aluminum Smelter

Vasconcelos¹,

Mesquita

2011

International Journal of Engineering Business Management

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Fluidization is an engineering unit operation that occurs when a fluid (liquid or gas) ascends through a bed of particles, and these particles get a velocity of minimum fluidization enough to stay in suspension, but without carrying them in the ascending flow. As from this moment the powder behaves as liquid at boiling point, hence the term “fluidization”. This operation is widely used in the aluminum smelter processes, for gas dry scrubbing (mass transfer) and in a modern plant for continuous alumina pot feeding (particles’ momentum transfer). The understanding of the alumina fluoride rheology is of vital importance in the design of fluidized beds for gas treatment and fluidized pipelines for pot feeding. This paper shows the results of the experimental and theoretical values of the minimum and full fluidization velocities for the alumina fluoride used to project the state of the art round non‐metallic air‐fluidized conveyor of multiples outlets

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“…Fixed and a fluidized bed of particles at a minimum fluidization velocity – source: (Vasconcelos and Mesquita, 2011) 2 …”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

“…Permeameters used at Albras' laboratory to survey the minimum fluidization velocity of the powders used in the primary aluminum industry – source: (Vasconcelos, 2011) 10 .…”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

“…Experimental pressure drop in the bed of alumina fluoride – (72.6 +- 2.7) μm /3387.3 kg.m −3 versus superficial air velocity – source: (Vasconcelos, 2011) 10 .…”

Section: Fundamentals Of Powder Fluidizationmentioning

confidence: 99%

See 2 more Smart Citations

Minimum and Full Fluidization Velocity for Alumina Used in the Aluminum Smelter

Vasconcelos¹,

Mesquita

2011

International Journal of Engineering Business Management

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“…Gas-solid flows are found in many industries such as power plants, chemical, food and automobile industries for applications like pneumatic conveying, 1,2 circulating fluidized beds, 3 and powder handling. 4 In several industrial applications to ensure reliable thermal designs, local heat transfer studies are absolutely necessary. Radial and circumferential heat transfer distributions are typical in horizontal gas-solid flows.…”

Section: Introductionmentioning

confidence: 99%

Prediction of local heat transfer characteristics of dilute gas‐solid flows through an adiabatic, horizontal pipe

Patro

Kumar

Krishna

2019

Heat Trans. Asian Res.

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The local heat transfer characteristics of gas‐solid flows through an adiabatic, horizontal pipe are numerically studied using the two‐fluid model of Ansys Fluent 15. First, the model is validated with the experimental results available in the literature for the air temperature and average Nusselt number. Then, the local heat transfer characteristics of gas‐solid flows, such as temperature profiles of gas and solid, gas‐solid Nusselt number, logarithmic mean temperature difference, and effectiveness of gas and solid, are studied by changing different parameters (gas velocities 15‐24 m/s; inlet solid loading ratios 0.1‐1; particle diameters 100‐400 µm). It is observed that increasing the particle diameter and inlet gas velocity increases the gas temperature and decreases the solid temperature, increases the logarithmic mean temperature difference, and decreases the thermal effectiveness of gas and solid. However, increasing the solid loading ratio decreases the gas and solid temperatures, decreases the logarithmic mean temperature difference, and increases the thermal effectiveness of gas and decreases the thermal effectiveness of solid. Moreover, increasing the particle diameter decreases the gas‐solid Nusselt number, whereas increasing the solid loading ratio and inlet gas velocity increase the gas‐solid Nusselt number.

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Experimental and Theoretical Study on the Fluidization of Alumina Fluoride Used in the Aluminum Smelter Processes

Vasconcelos¹,

Mesquita²

2012

Light Metals 2012

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Gas-Solid Flow Applications for Powder Handling in Industrial Furnaces Operations

Cited by 6 publications

References 7 publications

Minimum and Full Fluidization Velocity for Alumina Used in the Aluminum Smelter

Minimum and Full Fluidization Velocity for Alumina Used in the Aluminum Smelter

Prediction of local heat transfer characteristics of dilute gas‐solid flows through an adiabatic, horizontal pipe

Experimental and Theoretical Study on the Fluidization of Alumina Fluoride Used in the Aluminum Smelter Processes

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