Pneumatic Separation of Fractions of a Polydisperse Gas Suspension in a Low-Velocity Flow

Tukmakov, A. L.; Харьков, В В; Akhunov, A. A.

doi:10.1007/s10891-022-02549-0

Cited by 9 publications

(3 citation statements)

References 6 publications

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“…However, the most effective way to prevent emissions remains the development and implementation of effective gas-solid cleaning systems. Currently, there are a huge number of devices for cleaning gas from dust, differing in design and separation mechanism [4][5][6][7]. The most common separators are the dry-type centrifugal devices.…”

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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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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“…In other cases, it is essential to clean the gas from suspended particles, as, for example, in the air preparation in the production of sulfuric acid [1] or to achieve absolutely pure air in the special microelectronics production rooms (Clean Rooms [2]). The first step of particle separation from gas flow is usually performed using the air devices of inertial [3] or centrifugal types [4][5][6]. There are many experimental and theoretical studies on the study of air separators, but various separation mechanisms and many factors affecting the separation efficiency determine the relevance of the study.…”

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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“…The study is devoted to the evaluation of technological parameters for the separation efficiency of fine solid particles from the gas system in a rectangular separator [3]. The paper presents a new mathematical model for the separation of a solid-gas flow in a z-shaped inertial separator [4]. The authors developed an original design of a classifier with coaxially arranged pipes, carried out a numerical study of the vortex flow patterns inside the device [5] and the pressure drop [6].…”

Section: Introductionmentioning

confidence: 99%

Numerical study of particles removal from dusty gas in separation device with straight arc-shaped elements

et al. 2023

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The paper presents an original design of the separator with straight rows of arc-shaped elements, which allows efficient separation of solid particles without significant abrasive wear of the device’s surfaces. A three-dimensional model of the device is developed, and the principle of its operation is described. In this paper, a numerical study of the capture of solid particles from a gas flow in the separation device is performed. It is found that at a relatively low inlet gas velocity (1 m/s), the separation efficiency of particles with a diameter of 20 to 100 μm is on average 78.9%. An increase in the inlet velocity of the dusty gas flow results in a decrease in the efficiency of the device for particles ranging in size from 25 to 80 μm. The pressure drop of the separator at a velocity of 1 m/s ranges from 45.5 to 95.4 Pa, and at a gas velocity of 4 and 7 m/s – from 740.8 to 4652.1 Pa. An increase in the number of straight arc-shaped elements from 4 to 12 and an increase in particle density from 3400 to 10000 kg/m3 leads to improved separation efficiency.

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Pneumatic Separation of Fractions of a Polydisperse Gas Suspension in a Low-Velocity Flow

Cited by 9 publications

References 6 publications

Effect of arc element row arrangement on separator efficiency

Effect of arc element row arrangement on separator efficiency

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

Numerical study of particles removal from dusty gas in separation device with straight arc-shaped elements

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