Development of cutoff size adjustable omnidirectional inlet cyclone separator

Lim, Jun-Hyung; Oh, Sung-Hyeon; Kang, Sukkyung; Lee, Kyung-Joo; Yook, Se-Jin

doi:10.1016/j.seppur.2021.119397

Cited by 21 publications

(3 citation statements)

References 26 publications

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“…1–3 Air purification is important not only to individual health but is also required to satisfy industrial environmental regulations and to achieve high-level clean rooms, for example, in semiconductor manufacturing. 4,5 Filtration masks have also played a crucial role during the recent pandemic, preventing airborne contaminants that convey viruses in air. 6,7 While a diverse range of materials have been introduced for PM filtration, meltblown polymeric fibrillar sheets have recently been the most widely accepted material for air filters.…”

Section: Introductionmentioning

confidence: 99%

Pure metallic nanofibrillar membrane for high-performance electrostatic air filtration with antimicrobial and reusable characteristics

Yoo

Yang

Jeong

et al. 2023

Environ. Sci.: Nano

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Section: Introductionmentioning

confidence: 99%

Pure metallic nanofibrillar membrane for high-performance electrostatic air filtration with antimicrobial and reusable characteristics

Yoo

Yang

Jeong

et al. 2023

Environ. Sci.: Nano

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“…The geometry of the cyclone separator has a significant effect on its performance. Various scholars have studied the effect of geometric parameters on the performance of cyclone separators [5,25,26]. The results show that there are many secondary flows inside the cyclone separator, such as short-circuit flow, circulating flow, and back-mixing flow at the bottom of the straight pipe section [27,28].…”

Section: Introductionmentioning

confidence: 99%

Structural Optimization of High-Pressure Polyethylene Cyclone Separator Based on Energy Efficiency Parameters

Liu

Wang³

et al. 2023

Processes

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The high-pressure polyethylene process uses cyclone separators to separate ethylene gas, polyethylene, and its oligomers. The oligomers larger than 10 microns that cannot be separated must be filtered through a filter to prevent them from entering the compressor and affecting its normal operation. When the separation efficiency of the cyclone separator is low, the filter must be cleaned more frequently, which will reduce production efficiency. Research shows that improving the separation efficiency of the separator is beneficial for the separation of small-particle oligomers and reduces the frequency of filter cleaning. For this reason, Computational Fluid Dynamics simulations were performed for 27 sets of cyclone separators to determine the effects of eight structural factors (cylinder diameter, cylinder height, cone diameter, cone height, guide vane height, guide vane angle, exhaust pipe extension length, and umbrella structure height) on separation efficiency and pressure drop. The equations for separation efficiency and pressure drop using these eight factors and the equations based on energy-efficiency parameters were determined. The optimization analysis showed that separation efficiency can be improved by 98.7% under the premise that the pressure drop is only increased by 8.2%. By applying the improved structure to the high-pressure polyethylene process, separation efficiency is increased by 17.7%, which could effectively reduce the frequency of filter cleaning for this process, and thereby greatly improve production efficiency.

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“…This is, however, not the case in small cyclones where the flow and operating conditions-speed, temperature, pressure, viscosity, or cyclone diameter-may be more important, as [5] in these cyclones, the flow can be laminar, turbulent, or transient. Turbulent flows may initially be laminar [19]. The operating parameters have a greater effect on cyclone efficiency in laminar than turbulent flows.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Two-Phase Flow Parameters of a Multi-Channel Cylindrical Cyclone

et al. 2022

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The variation in the two-phase flow parameters in a cylindrical body of new geometry and principle of operation are considered for a device for separating solids from air flow, solving the problem of numerical flow modeling. The aim of this research was to analyze the changes in the parameters of a multi-channel cylindrical cyclone in a mathematical model and to compare it with the results of the examined physical model. Studies on the numerical modeling of cyclones are reviewed, and models and equations for complex vortex flow description are applied. Differential equations were numerically solved by the finite volume method using the standard turbulence models of k‒ε and RNG k‒ε. Numerical modeling of the velocities, pressures, and volumes of both phases of the two-phase flow was performed. The simulation of the volume distribution of the second phase (glass particles) in the cyclone structure at flow rates of 10.9 m/s, 13.9 m/s, and 21.9 m/s was performed. The values obtained were compared with the physical model of the cyclone in question. The mean relative error was ± 6.9%.

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Development of cutoff size adjustable omnidirectional inlet cyclone separator

Cited by 21 publications

References 26 publications

Pure metallic nanofibrillar membrane for high-performance electrostatic air filtration with antimicrobial and reusable characteristics

Pure metallic nanofibrillar membrane for high-performance electrostatic air filtration with antimicrobial and reusable characteristics

Structural Optimization of High-Pressure Polyethylene Cyclone Separator Based on Energy Efficiency Parameters

Modeling of Two-Phase Flow Parameters of a Multi-Channel Cylindrical Cyclone

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