Experimental study and numerical simulation of the characteristics of a percussive gas–solid separator

Wu, Xuecheng; Wang, Xiao; Zhou, Yingshan

doi:10.1016/j.partic.2017.04.007

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…Thus, the gravitational and drag forces are dominant forces in gas‐solid separators 35, 63–65, 78, 79, 90, 91, 93, 101, 107, 108. The drag force, Saffman lift force, virtual mass force, and pressure gradient force are considered if the particles are carried by the gas flow inside the separator 81.…”

Section: Discussionmentioning

confidence: 99%

“…Square cyclone separator 79, the prolonged cyclone 80, the cyclone with separation tooth 81, cloth cyclone 82, and slit‐cone cyclone 83 are some cyclones proposed to enhance the separation efficiency. For example, Qian et al.…”

Section: Numerical Approachmentioning

confidence: 99%

“…Also, Wu et al. 81 proposed an efficient percussive gas‐solid separator with the separation tooth angle (Fig. 6) and demonstrated that separation efficiency increases with increasing inlet velocity, decreasing head angle and increasing separation tooth angle.…”

Section: Numerical Approachmentioning

confidence: 99%

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An Overview of Numerical Simulations on Gas‐Solid Cyclone Separators with Tangential Inlet

Dehdarinejad

Bayareh

2021

ChemBioEng Reviews

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Cyclone separators play a dominating role in fluid catalytic cracking, biomass pyrolysis, dedusting, demisting, heavy oil regrading, etc. Separation mechanism, pressure drop, particle size, collection efficiency, gas underflow, gas inlet velocity, particle loading, cut‐off size of particles, and gas residence time are the main cyclone performance criteria. In the present work, the particle separation theory is explained and recent developments of numerical simulations of different cyclone separators with tangential inlet are summarized. Besides, the effect of different parameters on cyclone performance is discussed and several suggestions are provided based on previous numerical simulations.

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Section: Discussionmentioning

confidence: 99%

Section: Numerical Approachmentioning

confidence: 99%

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An Overview of Numerical Simulations on Gas‐Solid Cyclone Separators with Tangential Inlet

Dehdarinejad

Bayareh

2021

ChemBioEng Reviews

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“…The static pressure is symmetrical along the centerline, and the radial pressure distribution is V-shaped, gradually increasing from the middle to both sides. Furthermore, the pressure loss increases from the increase in velocity, and the exhaust flows increase from the increase in the negative pressure at the exhaust outlet (Wu and Zhou 2018). Through large eddy simulation (LES) and experimental comparison, Francisco et al (2012) noticed that turbulence plays an important role in particle movement.…”

Section: Introductionmentioning

confidence: 99%

“…And the influence of the magnetic field on particles with smaller diameters is more obvious than that on particles with bigger diameters. Besides, separation of the coarse and fine powder should be realized by different devices due to the complexity of the flow field under hypersonic conditions (Wu and Zhou 2018).…”

Section: Introductionmentioning

confidence: 99%

Optimization and Assessment of the Comprehensive Performance of an Axial Separator by Response Surface Methodology

2023

JAFM

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The separator with inner channels is designed to solve the inefficiency caused by particle collisions with the wall. Then the response surface methodology is used to optimize this novel separator with the aim of maximizing the separation efficiency and exhaust rate while minimizing the pressure drop simultaneously. Firstly, the Reynolds Stress model and the Euler-Euler model are taken to compare the novel and conventional structures. Secondly, five factors, including inlet velocity (v) of air-particle flow, number of inner channels, axial angle of inner channels, height of inner channels, and number of guide vanes, are selected in the Box-Behnken Design. Thirdly, the quadratic regression equations are established in multi-objective optimization. The research results demonstrate that separation efficiency is improved but the pressure drop is increased in the novel design. Additionally, too large inner channels can lead to a decrease in separation efficiency. The increased height of the inner channels has the most positive impact on the exhaust rate. And the optimization amplitude of the pressure drop is the most remarkable, which is presented as 13.87% at v = 2.5 m/s, 34.49% at v = 4.5 m/s, and 75.49% at v = 6.5 m/s, respectively. Furthermore, the separation efficiency of optimized designs is higher than that of conventional ones at each velocity. The relevant research results can provide an effective guide for improving the efficiency of separators.

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Comparative performance analysis of innovative separation chamber configurations: Numerical and experimental investigations

Zobeiri

Rostampour

Fanaei

et al. 2021

Span. j. agric. res.

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Aim of study: Novel configurations of separation chamber are proposed to resolve the critical issue of separation in agro-industrial equipment.Area of study: Dept. of Mechanical and Biosystems Engineering, Urmia, IranMaterial and methods: Precise and instrumented experimentation has been conducted to calibrate the computational fluid dynamics (CFD) methodology in the modeling and simulating chickpea pod separation. Mechanisms were selected based on optimizing separation efficiency, relative purification and required airflow as a criterion for energy consumption.Main results: Applying a guiding blade and suction fans may potentially increase the separation efficiency while reducing the relative purification and required airflow. The highest separation efficiency (95%), the lowest required airflow (545 m³/h) and the lowest pressure drop (16.3 Pa), were obtained by such configuration. Furthermore, the highest relative purification of 90% was achieved when the mechanism was free of blade and fans.Research highlights: To integrate the advantages of the above-mentioned configurations, a series-type assembling them is proposed to preserve the separation efficiency and relative purification at the highest level, meanwhile reducing the required airflow. Also, 15% enhancement in the separation efficiency and 302.8 m³/h reductions in the airflow were found as a crucial finding. The high correlation of experimental and theoretical CFD results is the key point to motivate the researchers for extension of similar case projects.

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Experimental study and numerical simulation of the characteristics of a percussive gas–solid separator

Cited by 3 publications

References 10 publications

An Overview of Numerical Simulations on Gas‐Solid Cyclone Separators with Tangential Inlet

An Overview of Numerical Simulations on Gas‐Solid Cyclone Separators with Tangential Inlet

Optimization and Assessment of the Comprehensive Performance of an Axial Separator by Response Surface Methodology

Comparative performance analysis of innovative separation chamber configurations: Numerical and experimental investigations

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