Predicting equivalent settling area factor in hydrocyclones; a method for determining tangential velocity profile

Sabbagh, Reza; Lipsett, Michael G.; Koch, Charles Robert; Nobes, David S.

doi:10.1016/j.seppur.2016.03.009

Cited by 11 publications

(10 citation statements)

References 36 publications

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“…So, the water recovery % and solid % in the overflow stream were found to increase. A similar observations were found by [12,21]. From Fig.…”

Section: Effect Of Feed Inlet Diameter ( )supporting

confidence: 90%

“…The fines in underflow were found to increase by increasing the feed pressure which in turn increases the separation efficiency ( ). A similar observations were found by [8,[19][20][21].…”

Section: Effect Of Feed Inlet Pressure (P)supporting

confidence: 89%

“…The results indicate that the overflow water recovery % and separation efficiency decease by increasing the feed inlet diameter, while overflow solid % increases. This can be attributed to that the inlet diameter has very little influence on the volume split (S) within the cyclone [21]. By increasing the feed inlet diameter, the inlet velocity was found to decrease which in turn, decrease the tangential velocity and the centrifugal force consequently, the pressure drop decreases, and cut size increases which in turn separation efficiency decreases.…”

Section: Effect Of Feed Inlet Diameter ( )mentioning

confidence: 98%

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Treatment of Paper Industry Wastewater

Attia

Farghaly

Ramadan

et al. 2018

Journal of Al-Azhar University Engineering Sector

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A wastewater of paper industry was treated using two different hydrocyclones (48 mm, and 73 mm) followed by Electro-coagulation (EC) process as a second stage to enhance the treatment process. The effect of design and operating parameters on the separation efficiency was investigated. Separation efficiency of 77 % can be obtained for both hydrocyclones. The treatment process has a great potential to reduce the COD, BOD, TS, TSS, color and turbidity.

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“…So, the water recovery % and solid % in the overflow stream were found to increase. A similar observations were found by [12,21]. From Fig.…”

Section: Effect Of Feed Inlet Diameter ( )supporting

confidence: 90%

“…The fines in underflow were found to increase by increasing the feed pressure which in turn increases the separation efficiency ( ). A similar observations were found by [8,[19][20][21].…”

Section: Effect Of Feed Inlet Pressure (P)supporting

confidence: 89%

Section: Effect Of Feed Inlet Diameter ( )mentioning

confidence: 98%

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Treatment of Paper Industry Wastewater

Attia

Farghaly

Ramadan

et al. 2018

Journal of Al-Azhar University Engineering Sector

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“…The flow field of a hydrocyclone connects with the separation efficiency directly . The tangential velocity is an important factor to describe flow field in a hydrocyclone . To observe the influences of the air‐core steady state on the internal flow field, the velocity distributions inside the hydrocyclone at 4.0, 8.0, and 10.0 s were compared.…”

Section: Resultsmentioning

confidence: 99%

Steady‐state distribution of air‐core in a hydrocyclone

Song

Sun

et al. 2016

Can J Chem Eng

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The structure and movements of the air‐core in a hydrocyclone play a key role in the performance and efficiency of separation. The technique of computational fluid dynamics has been used to evaluate the air‐core characteristics and their influence on the internal flow field for the case of a 140 mm hydrocyclone. Through computational analysis for developed flow in a hydrocyclone, the shape, diameter, and steady‐state distribution of the air‐core were analyzed and presented. The steady‐state distribution of the air‐core could be divided into three distinctive parts. Two parts of the air core, on the cylindrical and spigot sections are very stable, and their shape and diameters do not vary over time. For the third part, on the conical section, the dense transient‐state situation of the air‐core has no clear rule. This results in the dense transient internal flow field, meanwhile, the internal flow fields of the other two parts are stable. Based on the calculation, the analysis of steady state of the air‐core has been extended to operational conditions, including inlet velocities, viscosity, and atmospheric pressure. Those operation factors do not have any influence on the steady‐state situation of the air‐core in the developed flow of hydrocyclone. However, diameters of air core change with those factors. Any increase in the inlet velocity will increase the air‐core diameter.

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“…The larger rotating bowl diameter D is, the greater tangential velocity is, the bigger centrifugal force of separation is, and will be beneficial to oil-water separation; The longer bowl length L is, the greater the oil-water resides in the bowl is, the separation effect will be better. So, the length of the rotating bowl should be long enough in order to ensure the liquid resides in the bowl [4], [5], [6]. Normally reside time should be in 3 ~ 10 s. D and L of the rotary bowl affect the capacity of dynamic hydrocyclone, the greater the capacity is, the longer of the separation time should be.…”

Section: Rotating Cylinder Diameter D and Length Lmentioning

confidence: 99%

Research on Structure Design of Dynamic Hydrocyclone on Board Ship

Cheng¹

2016

AJMA

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Treatment about bilge water is always one key point of the ship pollution prevention, at present, separation accuracy of the separator on board can reach requirements of specification for seagoing ships pollution prevention, but the separation of quantity and convenience of operation aspects are still to be improved. The ship oily water dynamic hydrocyclone separator can both meet to the above two aspects. The thinking of structure design and the manufacturing and assembly are discussed. The main structure of ship oily water dynamic hydrocyclone separator and its working principle are introduced. The basic parameters of the device working conditions are provided. The new method onboard ship oily water treatment is put forward. It can be used as references for researchers on oily water disposal.

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Predicting equivalent settling area factor in hydrocyclones; a method for determining tangential velocity profile

Cited by 11 publications

References 36 publications

Treatment of Paper Industry Wastewater

Treatment of Paper Industry Wastewater

Steady‐state distribution of air‐core in a hydrocyclone

Research on Structure Design of Dynamic Hydrocyclone on Board Ship

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