Uniform distribution design and performance evaluation for UU-type parallel mini-hydrocyclones

Huang, Cong; Lv, Wen Jie; Wang, Jian Gang; Wang, Jun Ye; Wang, Hua Lin

doi:10.1016/j.seppur.2014.01.057

Cited by 12 publications

(5 citation statements)

References 27 publications

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“…In order to achieve high separation efficiency, it is necessary to resolved how to ensure uniform pressure drop and flow distribution of each hydrocyclone in the arrangement. According to Wang's theory of flow distribution in manifolds, [16][17][18] Chen et al, 19 and Hang et al 20,21 theoretically and experimentally studied uniform distribution in different types of hydrocyclone groups. In this work, the SR-hydrocyclones were arranged as the Z-Z type [ Fig.…”

Section: Hydrocyclone Separationmentioning

confidence: 99%

Closed Process of Shale Oil Recovery from Circulating Washing Water by Hydrocyclones

Huang

Wang

Bao³

et al. 2016

Kem. Ind.

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The conventional oil recovery system in the Fushun oil shale retorting plant has a low oil recovery rate. A large quantity of fresh water is used in the system, thereby consuming a considerable amount of water and energy, as well as polluting the environment. This study aims to develop a closed process of shale oil recovery from the circulating washing water for the Fushun oil shale retorting plant. The process would increase oil yield and result in clean production. In this process, oil/water hydrocyclone groups were applied to decrease the oil content in circulating water and to simultaneously increase oil yield. The oil sludge was removed by the solid/liquid hydrocyclone groups effectively, thereby proving the smooth operation of the devices and pipes. As a result, the oil recovery rate has increased by 5.3 %, which corresponds to 230 tonnes a month.

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Section: Hydrocyclone Separationmentioning

confidence: 99%

Closed Process of Shale Oil Recovery from Circulating Washing Water by Hydrocyclones

Huang

Wang

Bao³

et al. 2016

Kem. Ind.

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“…Compared to increasing the size of the equipment to stay level with demand, the numbering-up approach significantly decreases gas–liquid contacting time. In addition, the setup used in conjunction with a single gas–liquid mixer is the same as that used in the case of the distributor, the similarity of the (flow field) physical process is only a quantitative change with no qualitative change, and the individual performance does not change as the number increases. − The parallel amplification can be transformed into a multichannel fluid distribution problem. However, there is a lack of uniform flow in mixer configurations, which leads to pressure fluctuations in the underflow, and, thus, gas–liquid contacting efficiency can be affected .…”

Section: Introductionmentioning

confidence: 99%

Gas–Liquid Swirling-Sparger Configured along a Toroidal Distributor for the Intensification of Gas–Liquid Contacting

Chang

et al. 2021

Ind. Eng. Chem. Res.

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A gas–liquid swirling-sparger (GLSS) configured along a toroidal distributor was developed based on swirling flow to enhance the efficiency of gas–liquid contacting. Gas–liquid contacting was visualized using a high-speed camera, the gas–liquid mass transfer coefficient was estimated through oxygen absorption experiments, and the hydrodynamic performance and bubble size distribution were analyzed. The results show that the continuous gas phase breaks into microbubbles under shearing action and pressure fluctuation caused by the three-dimensional strong turbulent flow in the GLSS; the bubble diameter distribution was unimodal with a median diameter (d 50) of 625 μm, and the oxygen absorption efficiency of the GLSS exceeded 70%. A general discrete model was developed for evaluating flow uniformity in parallel multiple GLSSs along a toroidal distributor. The experimental results were in good agreement with the theoretical calculations. The study is important for optimizing the use of gas–liquid contactors in engineering applications.

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“…Besides, minihydrocyclones are popular in practical engineering applications owing to advantages such as high efficiency, separating precision, and relatively low power consumption [11]. In our previous studies [12,13], a parallel minihydrocyclone separator group has been successfully applied under high handling capacity conditions. Thus, minihydrocyclones with shear and separation performance allow for promising contributions in the removal of hydrocarbon pollutants from oil-contaminated catalysts in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Shear Stress on Deoiling of Oil‐Contaminated Catalysts in a Hydrocyclone

Liu

Zhang

et al. 2016

Chem Eng & Technol

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Shear stress provided by a hydrocyclone was employed to remove the oil from oilcontaminated catalysts. Understanding the deoiling mechanism and quantitative analysis of the interaction between shear stress fields and deoiling are necessary to improve deoiling efficiency. A numerical simulation was conducted for the velocity field and shear stress field of a hydrocyclone. The shear stress field in the wall layer, where oil-contaminated catalysts are usually located, was robust. Increasing inlet flow rates resulted in a higher shear rate distribution along the wall layer. Numerical results were compared with experimental data. In the deoiling process, higher shear stress rates promoted faster transport of oil from catalysts into the fluid, thereby increasing the deoiling efficiency. Deoiling by the shear stress of a hydrocyclone is an efficient method for cleaning oil-contaminated catalysts within a short time.

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Uniform distribution design and performance evaluation for UU-type parallel mini-hydrocyclones

Cited by 12 publications

References 27 publications

Closed Process of Shale Oil Recovery from Circulating Washing Water by Hydrocyclones

Closed Process of Shale Oil Recovery from Circulating Washing Water by Hydrocyclones

Gas–Liquid Swirling-Sparger Configured along a Toroidal Distributor for the Intensification of Gas–Liquid Contacting

Effect of Shear Stress on Deoiling of Oil‐Contaminated Catalysts in a Hydrocyclone

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