Efficiency of different separation elements for removal of fine particles from gas

Зинуров, В. Э.; Дубкова, Н З; Popkova, O. S.; Дмитриева, О. С.

doi:10.1088/1742-6596/1745/1/012090

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…Numerical simulations were performed by means of ANSYS Fluent software package, designed for solving problems of fluid mechanics, using the finite element method in the form of unstructured grid technology, which allows you to get an accurate solution for areas with large flow gradients. Transition SST, one of the latest modifications of Menter's SST models, was used as a turbulence model, in which two additional transport equations are introduced; one is for the intermittency of turbulence, and the second one is for the criterion of transition start in thickness units of momentum loss of the Reynolds numbers [14][15][16][17][18][19][20][21]. The number of cells when creating the grid was approximately 785,000.…”

Section: Description Of Developed Square Separation Devicementioning

confidence: 99%

Separation of Fine Particles from Gas in Paint-Spraying Booths

et al. 2021

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Nowadays, at production facilities with paint-spraying booths that use paint and varnish materials to cover the surfaces of product, the problem of gas flow contamination with finely dispersed solid particles of dust and rubbish, which negatively affect the quality of products, is increasingly being raised. In order to minimize the content of solid particles in the gas flow, coarse and fine filters are installed in the paint-spraying booths, which prevent dust particles from entering the surface of products. However, the existing purification devices have a number of disadvantages that affect the efficiency of collecting finely dispersed particles from the gas flow with a size of 0.5-5 microns. The authors of article developed a square separator to increase the efficiency of collecting finely dispersed particles from gas flows in the paint-spraying booths. The installation of proposed separation device in the paint-spraying booths affects not only the quality of collecting solid particles, but also increases the service life of fine and coarse filters In the course of numerical studies, the results of impact of structural and technological parameters, namely, the impact of inlet rate and scale of separation device on the efficiency of collecting solid particles from the gas flow, were obtained.

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Section: Description Of Developed Square Separation Devicementioning

confidence: 99%

Separation of Fine Particles from Gas in Paint-Spraying Booths

et al. 2021

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“…The relatively small dimensions of the arc elements provide a small radius of gas rotation near them. Thus, at low gas inlet velocities, sufficiently large centrifugal forces are formed in the separator to influence the direction of trajectories of both large and small particles [20][21][22]. Due to the geometric shape of the arc elements and their staggered arrangement, dead zones appear in the separator during gas movement, which are located inside and directly behind the elements.…”

Section: Introductionmentioning

confidence: 99%

Effect of arc element row arrangement on separator efficiency

Vu Linh,

Khamitova,

Kuznetsov

et al. 2023

E3S Web of Conf.

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Dust emission gas cleaning is a crucial factor for many industries. The paper proposes a separator with the arc-shaped elements to clean dusty gas from solid particles. The study aims to examine how the distance between rows of arc-shaped elements affects separator efficiency and pressure drop, using numerical methods. In simulations, the inlet velocity of the gas flow varied from 0.5 to 5 m/s and the particle size was 10 to 170 μm. It was found that the change in the distance between the rows of the arc elements in the device leads to the formation of different streams. The results show that increasing the distance between the rows of the arc results in a decrease in the separator efficiency, since the particles during separation from the dusty gas due to centrifugal forces fly into the space between the elements, where they are inversed by the flow again. In this case, the pressure drop decreases. The maximum efficiency of particle separation by the developed device (95.4%) is achieved at a distance between rows of arc elements of 0.75. Pressure loss in the separator ranges from 16 to 1862 Pa at an inlet gas velocity of 0.5 to 5 m/s.

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“…In order to develop an efficient separator for collecting fine particles, it is necessary to select the best design characteristics and operating regime in order to ensure a high separation efficiency at the maximum flow velocity and minimum pressure loss. To solve this problem, it is proposed to use the developed separation device with the arc elements [7][8][9]. The aim of this work is to numerically study the influence of the element size on the efficiency of particle collection.…”

Section: Introductionmentioning

confidence: 99%

Effect of arc element diameter on fine particle collection efficiency of the separator

Vu Linh,

Abdullina,

Khamitova

et al. 2023

E3S Web Conf.

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Clean gas without suspended particles is an essential factor for many industries. The paper is concerned with the design of a separation device with rows of the arc elements, in which a wave-like flow pattern is observed. The separation of solid particles from the gas occurs due to inertial and centrifugal forces. A three-dimensional model of the device and its operating principles are presented. The aim of the work is to numerically study the effect of the size of the arc elements of the separation device on the efficiency of particle collection. In the course of the simulation, the diameter of the arc elements varied from 25 to 50 mm. The exit to the stationary solution was estimated by the pressure drop of the separation device. It was found that about 870 iterations were needed. Results have shown that the diameter of the arc elements, at which the maximum efficiency of collecting particles from gas-solid flow occurs, is 40 mm. The separation efficiency of the device with a diameter of the arc elements of 25, 40, and 50 mm averages 81.1, 90.1, and 86.5%, respectively, at an inlet gas velocity of 0.5 to 5.0 m/s. The pressure loss in the separation device ranged from 12.6 to 1924.1 Pa at a gas velocity of 0.5 to 5.0 m/s. It is concluded that it is important to use a separation device to collect fine particles at a dusty gas velocity of less than 3 m/s because its pressure drop is significantly lower compared with other air separators.

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Efficiency of different separation elements for removal of fine particles from gas

Cited by 9 publications

References 18 publications

Separation of Fine Particles from Gas in Paint-Spraying Booths

Separation of Fine Particles from Gas in Paint-Spraying Booths

Effect of arc element row arrangement on separator efficiency

Effect of arc element diameter on fine particle collection efficiency of the separator

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