Investigation of a fluidized bed in a vortex chamber

Dvornikov, N. A.; Belousov, P. P.

doi:10.1134/s0021894411020076

Cited by 20 publications

(8 citation statements)

References 1 publication

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“…The authors [23,24] also noted high stability of a vortex (rotating) fluidized bed in a wide range of loads in the continuous and dispersed phases. In the paper [25] the author noted the ability to manage the suspended layer configuration.…”

Section: рассмотрен способ снижения растворимости гранул азотных и фоmentioning

confidence: 99%

Hydrodynamic and kinetic processes of the mineral fertilizer granules encapsulating in the multistage device with suspended layer

Yukhymenko

Острога

Аrtyukhov

2016

EEJET

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Section: рассмотрен способ снижения растворимости гранул азотных и фоmentioning

confidence: 99%

Hydrodynamic and kinetic processes of the mineral fertilizer granules encapsulating in the multistage device with suspended layer

Yukhymenko

Острога

Аrtyukhov

2016

EEJET

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“…Another way to create a directional movement of dispersed material is the application of vortex fluidized bed in granulators-dryers [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Utilization of dust and ammonia from exhaust gases: new solutions for dryers with different types of fluidized bed

Аrtyukhov

Аrtyukhova

2018

J Environ Health Sci Engineer

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Background The article is devoted to the development of new utilization methods of exhaust gases by cleaning them from fine particles, dust and harmful gas components. The basic design solutions, which allow to increase the degree of exhaust gases cleaning, were presented. The effectiveness of design solutions was supported by the results of experimental studies. Analysis of the research results allowed developing of new designs of equipment for dehydration in fluidized bed. The article also presents the calculation algorithm of eco-friendly dryers with fluidized bed. Methods Physical modeling was based on methods of similarity theory. In studies in dryers experimental models the installation scale was changed (compared with industrial conditions). Geometric similarity was maintained by equity of constants and invariants of geometric similarity. Always similarity of respective particles movement and their trajectories in industrial design and in experimental models was also maintained. The creation of graphical dependences was carried out by differential methods of mathematical analysis and integral calculus. The reliability of obtained experiment results was caused by the application of time-tested in practice methods. Results and discussion Control of product fractional composition allowed to make a selection of required fractions (including the fine granules) in a certain place of device. This allowed to increase the degree of purification of exhaust gas even before it output from the dryer working space. The process of separating the granules into fractions and the selection of fine fraction can be performed due to structural changes in dryer units and selection of optimal hydrodynamic conditions of fluidizing agent motion. Installation of special units in the dryers allowed to extract other contaminants from the exhaust gases. Conclusions Proposed constructive solutions for fluidized bed dryers allowed to:-provided of granules classification to the desired number of fractions with a simultaneous release and discharged of fine fraction from the working volume of dryer without the exhaust gases; -increased the degree of monodispersity of commodity granules on 25-35%; -reduced the amount of dust in the exhaust gases on 35-65%; -reduced the ammonia content in the exhaust gas on 90-95%.

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“…Production of a nanostructured porous surface layer on ammonium nitrate granules can be realized by several methods [3]. Among them, the method of moistening with subsequent heat treatment in a vortex fluidized bed has favorable advantages, such as -improvement of the environmental performance of production; -no loss of granule strength; -simplified production scheme.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the apparent simplicity, this method is very sensitive to the hydrodynamic and thermodynamic conditions of its realization. It is possible to operate the granule production process using vortex-type devices [1][2][3][4][5], which have proven themselves in many heat and mass exchange processes [6,7]. The optimal hydrodynamic conditions of the vortex granulator operation, at which it is feasible to obtain a product with sufficient strength and minimum moisture content, were selected in [8,9].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Conditions for Obtaining 3D Nanostructured Porous Surface Layer on the Granules of Ammonium Nitrate

Аrtyukhov¹,

Sklabinskiy²

2016

J. Nano- Electron. Phys.

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The paper deals with the study of the influence of thermodynamic conditions on the structure of a nanostructured porous surface layer on ammonium nitrate granules. Calculation of the heating of the granule and moisture removal from it for different thermodynamic factors of the coolant was conducted based on the theoretical model of drying and dehydration kinetics. The surface structure of granules obtained under different thermodynamic characteristics of the coolant was investigated. The obtained data is the base for selection of optimal technological parameters of vortex granulators being a part of devices for producing 3D nanostructured porous surface layer on the ammonium nitrate granule.

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Investigation of a fluidized bed in a vortex chamber

Cited by 20 publications

References 1 publication

Hydrodynamic and kinetic processes of the mineral fertilizer granules encapsulating in the multistage device with suspended layer

Hydrodynamic and kinetic processes of the mineral fertilizer granules encapsulating in the multistage device with suspended layer

Utilization of dust and ammonia from exhaust gases: new solutions for dryers with different types of fluidized bed

Thermodynamic Conditions for Obtaining 3D Nanostructured Porous Surface Layer on the Granules of Ammonium Nitrate

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