Numerical investigation on the performance and flow pattern of two novel innovative designs of four-inlet cyclone separator

Le, Dang Khoi; Yoon, Jasang

doi:10.1016/j.cep.2020.107867

Cited by 52 publications

(21 citation statements)

References 53 publications

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“…A large size barrel diameter 900-mm PV cyclone separator 17 was adopted, as shown in Figure 1, and the detailed dimensions are shown in Table 1; inlets are single inlet, double inlet, triple inlet, and quadruple inlet. Comparing the literature, some studies [12][13][14][16][17][18] would keep the total inlet area consistent for single inlet and symmetric inlet cyclones, and some studies made each inlet area the same, that is, two and four times the inlet area for double inlet and quadruple inlet, respectively, than for single inlet. 15 However, engineering generally requires cyclones to handle the same amount of gas, and when the total inlet area is inconsistent, the inlet gas velocity is inconsistent, which affects the velocity distribution within the flow field and, consequently, the performance results.…”

Section: Geometry Of Cyclonesmentioning

confidence: 99%

Effect of number of inlets on performance and flow field of large‐scale cyclone separators

Wang

Sun

Yuan

et al. 2022

Asia-Pacific J Chem Eng

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The performance and flow field of large-scale cyclones with different inlet numbers were investigated by using computational fluid dynamics methods. The results show that the efficiency, pressure drop, and performance factor of cyclones increase with the increase in the number of inlets, and the quadruple inlet cyclone having the best overall performance is supposed to adopt. The number of inlets of the cyclone increases, the tangential velocity increases, and the short-circuit flow rate decreases; however, when the number of inlets is greater than 2, both variations are lessened. In this study, the vortex eccentricity of the quadruple inlet cyclone is the smallest, the vortex eccentricity of the double and triple inlet cyclone is comparable, and the vortex eccentricity of the single inlet cyclone is the most significant.

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Section: Geometry Of Cyclonesmentioning

confidence: 99%

Effect of number of inlets on performance and flow field of large‐scale cyclone separators

Wang

Sun

Yuan

et al. 2022

Asia-Pacific J Chem Eng

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“…Расчет производился на основе метода конечных элементов. Моделирование течения жидкостей и газов осуществляется путем решения уравнения Навье -Стокса [18][19][20]:…”

Section: рис 1 упрощенная трехмерная модель с разрезом сепаратора с соосно расположенными трубами: 1 -входное отверстие; 2 -выходные отвеunclassified

“…2). В том случае, если вихревая структура нарушается, например, из-за саморазрушения вихрей, вследствие наложения соседних вихрей друг на друга, то эффективность устройства будет уменьшаться, а потери давления станут увеличиваться [15][16][17][18][19]. Нарушение вихревой структуры может быть вызвано неправильной компоновкой устройства, эксплуатацией сепаратора при относительно высоких или низких скоростях газового потока и др.…”

Section: рис 2 формирование завихрений на плоскости в межтрубном пространстве сепаратора с соосно расположенными трубами (вид сверху) Figunclassified

Estimation of power consumption when trapping finely-dispersed particles in a separator with coaxially-arranged pipes

Зинуров¹,

Дмитриев²,

Badretdinova³

et al. 2021

jour

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This article sets out to estimate power consumption when trapping finely-dispersed particles of silicon dioxide using a separator with coaxially-arranged pipes, as well as the efficiency of such an installation. To this end, a numerical simulation of the movement of a gas flow with finely-dispersed particles of silicon dioxide through a separator with coaxial pipes was carried out in the ANSYS Fluent software. During the experiments, the inlet gas flow rate varied from 5 to 10 m/s, while the width and height of the rectangular slit ranged 2.1-8.7 and 10-30 mm, respectively. It was shown that the maximum efficiency of collecting finely-dispersed silicon dioxide particles and the minimum power consumption required for pumping the gas flow through the installation largely depends on the formation of a stable vortex structure in the interpipe space. The research showed that the optimal inlet gas flow rate equals 7.5 m/s. At this rate, the efficiency of particle collection corresponds to higher rates with a devia tion of ± 6%. In this case, the pressure loss is 1.74 times lower than that at higher rates. In order to achieve an efficiency of at least 90% with the height of the rectangular slit from 10 to 30 mm, the Stokes numbers must correspond to values of more than 50. The power consumption required for pumping a gas containing silicon dioxide particles through a separator equipped with coaxial pipes comprises from 1.9 to 31.2 W at the inlet gas flow rate of 7.5 m/s. In this case, the parameters of the rectangular slit are as follows: width - from 2.1 to 8.7 mm, height - from 10 to 30 mm. The use of separators with coaxially-arranged pipes in technological lines based on plasma technologies can become an alternative to installations for fine gas purification.

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“…Additionally, the study of separation cyclones with multiple inlets [15][16][17], new vortex finders [18,19], as well as the use of new techniques, such as the non-invasive environmentally friendly acoustic emission technique [20], was performed by various authors.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive CFD Assessment of Wheat Flow in Wheat Conveying Cyclone Validation and Performance Analysis by Experimental Data

et al. 2021

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Cyclone is often used in the Industry due to its low maintenance costs, simple design, and ease of operation. This work presents both experimental and simulation evaluation on the effect of inlet velocity and mass flow rate on the performance of a wheat conveying cyclone. According to the great importance of the pressure drop and separation efficiency on the separation phenomenon in the cyclone, a comprehensive study has been conducted in this regard. A computational fluid dynamics (CFD) simulation was realized using a Reynolds stress turbulence model, and particle-air interactions were modeled using a discrete phase model. The result showed a good agreement between the measured value and CFD simulation on the pressure drop and tangential velocity with a maximum deviation of 6.8%. It was found that the separation efficiency increased with inlet velocity up to 16 m s−1 but decreased slightly at a velocity of 20 m s−1. The pressure drop increased proportionally with inlet velocity. However, optimum performance with the highest separation efficiency (99%) and acceptable pressure drop (416 Pa) was achieved at the inlet velocity of 16 m s−1 and mass flow rate of 0.01 kg s−1.

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Numerical investigation on the performance and flow pattern of two novel innovative designs of four-inlet cyclone separator

Cited by 52 publications

References 53 publications

Effect of number of inlets on performance and flow field of large‐scale cyclone separators

Effect of number of inlets on performance and flow field of large‐scale cyclone separators

Estimation of power consumption when trapping finely-dispersed particles in a separator with coaxially-arranged pipes

A Comprehensive CFD Assessment of Wheat Flow in Wheat Conveying Cyclone Validation and Performance Analysis by Experimental Data

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