Effect of extra inlets structure on cyclone wall erosion

Liu, Ganghui; Wang, Weibing; Yu, Junzhi; Li, Xiaojun

doi:10.1016/j.powtec.2022.117926

Powder Technology

2022

DOI: 10.1016/j.powtec.2022.117926

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Effect of extra inlets structure on cyclone wall erosion

Ganghui Liu

Weibing Wang

Junzhi Yu

et al.

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Cited by 10 publications

(1 citation statement)

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“…In this study, an optimization process was conducted using CFD and response surface methodology methods. According to the results, the separation efficiency increased by 10%, and the pressure drop decreased by 14.54% in an optimal cyclone (Liu et al, 2022). Le and Yoon (2023) used a hybrid methodology that includes CFD and deep learning to improve the prediction of pressure drop in cyclone separators.…”

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confidence: 99%

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

Emami,

Rostampour,

Rezvanivand Fanaei

et al. 2024

J Food Process Engineering

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In this study, the effect of the cyclone body height on the flow field within the specific cyclone and also on the performance parameters of the cyclone has been investigated. The five heights of the cyclone as various configurations were I = 600, II = 675, III = 750, IV = 825, and V = 900 mm. A pressure‐based solver was used and the turbulent Reynolds stress model was utilized to simulate the flow. Then, the Lagrangian discrete phase model was used to simulate the solid phase. As the height of the cyclone increases, the pressure drop decreases. Also, the best separation efficiency and the highest particle velocity value were achieved at a height of 750 mm. The maximum values of turbulence intensity, skin friction coefficient, and strain rate were obtained as negative components of cyclone performance at the cyclone body height of 900 mm. The height of 750 mm was recognized as the best height of the cyclone's body.Practical ApplicationsApplying numerical simulation in food processing is a novel method to minimize equipment construction and reach a high‐accuracy design. Computational fluid dynamics can provide an accurate and detailed flow analysis in the cyclone separators utilized in the flour processing plant. The dimensional analysis can help the researchers to achieve the optimum design and enhance the cyclone performance by reducing pressure drop and increasing separation efficiency. Also, the maintenance cost would be significantly reduced due to detecting the critical sections and strengthening them.

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confidence: 99%

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

Emami,

Rostampour,

Rezvanivand Fanaei

et al. 2024

J Food Process Engineering

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Effect of concave‐wall jets with circumferential multi‐inlet on liquid–solid separation

Zhang,

Jiang,

Hou

et al. 2024

Asia-Pacific J Chem Eng

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This study combined numerical simulation and experiment to explore the influence of the concave‐wall jets with uniformly distributed tangential inlets in the cyclone separator on the liquid–solid separation characteristics and equipment. The results show that as the number of tangential inlets increases, the superposition effect of particle trajectories and flow fields becomes more significant. The superimposed flow field enhances the circumferential flow velocity of the fluid, causing the distribution of the jet along the radial and spanwise directions to shrink, greatly improving the uniformity of particle distribution and turbulent kinetic energy along the circumference, and effectively reducing the impact of particles on local areas near the jet inlet. Since the superposition of circumferential multi‐inlet jets enhances the swirling flow, the local disturbance and wall erosion effects near the jet inlet were reduced. Compared with double inlets, the flow rates of three inlets and four inlets were increased by 50% and 100%, respectively, the maximum turbulent kinetic energy increased by 14.5% and 56.2%, and the maximum escape time of particles was shortened by 3.2 and 3.3 s, respectively, the maximum erosion rates were reduced by 38.4% and 23.6%, respectively, and the separation efficiency and material handling capacity were significantly improved. This study supplemented the theory of concave‐wall jets' superposition characteristics and provided a theoretical basis for applying circumferential multi‐inlet devices in liquid–solid separation equipment.

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Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

El‐Emam,

Zhou,

Yasser

2024

ChemBioEng Reviews

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Gas‐particle aero‐type cyclones have revolutionized biochemical processes, engineering industries, and environmental pollution protection by effectively separating particles from gas. These devices rely on gravitational energy and centrifugal force to dissipate particle phase energy, but achieving optimal energy efficiency while minimizing pressure drop remains challenging. This has led to the development of various cyclone designs in commercial industries, each with unique energy efficiency characteristics. The intricate gas‐particle flow inside cyclones is a critical issue impacted by cyclone geometry, operating conditions, and media parameters. Advanced numerical simulations have been employed to understand this complex flow pattern better, offering researchers valuable insights into the mechanisms of different cyclone separators. This comprehensive review explores the available numerical methods in the literature on cyclones and their corresponding validations. Computational numerical modeling is a promising technique for predicting cyclone energy efficiency, gas‐particle behavior, and overall performance. This investigation delves into the progress and numerical forms of gas‐particle flow cyclones, examining how different parameters impact cyclone performance and flow patterns within the two‐phase flow. The future developments and challenges that may further promote the development of aero‐type cyclone separators, providing theory and engineering support for future cyclone designs, are also covered. As a result, it can confidently be reported that aero‐type cyclone separators remain a critical component in various industrial sectors, offering energy‐efficient solutions for mitigating environmental pollutants and gas‐particle separation systems. With continued development and research, these devices will undoubtedly shape the future of energy processes and engineering industries, ushering in a new era of sustainability and efficiency.

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Effect of extra inlets structure on cyclone wall erosion

Cited by 10 publications

References 43 publications

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

Effect of concave‐wall jets with circumferential multi‐inlet on liquid–solid separation

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

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