Hydrodynamics and pressure loss of concurrent gas–liquid downward flow through sieve plate packing

Shi, Wangde; Huang, Weixing; Zhou, Yuhan; Chen, Huan; Pan, Dawei

doi:10.1016/j.ces.2016.01.005

Cited by 14 publications

(27 citation statements)

References 29 publications

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“…Sieve plate packing is a newly developed structured packing and has been successfully applied in nuclear wastewater treatment in the boron recycling system (TEP system). [1][2][3] Compared with conventional packing, sieve plate packing performs better in many respects. First, the simple structure of the sieve plate significantly reduces the manufacturing costs and makes it easy to maintain the packing.…”

Section: Introductionmentioning

confidence: 99%

“…First, the simple structure of the sieve plate significantly reduces the manufacturing costs and makes it easy to maintain the packing. [2] Second, the sieve hole is large enough so the packing does not get easily blocked. [1,4] Most importantly, the sieve plate can repeatedly enhance the contraction and expansion of the fluid so that the gas-liquid interface can be renewed frequently to improve the transport efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…However, in spite of these advantages, so far, the design and analysis of sieve plate packing are still based on experience. [2] Further improvement of sieve plate packing is hindered by the fact that little is known about the complex flow behaviours inside the packing. Therefore, understanding the flow behaviours inside sieve plate packing is important when investigating hydrodynamics.…”

Section: Introductionmentioning

confidence: 99%

“…When gas and liquid concurrently flow through the column, the gas phase and the geometric characteristics of the interiors will significantly affect the pressure drop or flow pattern. [2,[5][6][7][8] Therefore, investigating the structure of the internal flow field of single gas flow under different geometric characteristics is helpful for the amplification prediction, optimization design, and mass transfer performance study of the column. [9] Generally, on the basis of the dry pressure drop, the wet pressure drop can be obtained by correcting the dry gas pressure drop.…”

Section: Introductionmentioning

confidence: 99%

“…[9] Generally, on the basis of the dry pressure drop, the wet pressure drop can be obtained by correcting the dry gas pressure drop. [2,5,10,11] Therefore, understanding the relationship between gas flow behaviours and geometric parameters of the interior is vital for the investigation of gas and liquid flow.…”

Section: Introductionmentioning

confidence: 99%

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Comparative study of dry pressure drop and flow behaviour of gas flow through sieve plate packing

et al. 2020

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Sieve plate packing is a newly developed packing that has been used in several industries due to its simple structure and operating flexibility, and no liquid flooding. In this work, first, systematic experiments were conducted to measure the pressure drop of gas flow through six sieve plate packings. The results indicated that the geometric characteristics of the packing have complicated effects on the pressure drops. Based on this, CFD simulations on the gas flow field were conducted using the realizable k‐ε model, and flow behaviours such as the pressure drop, pressure nephogram, and velocity distributions within different packings were obtained. The simulation results clearly showed interesting flow patterns, including the contraction and expansion of the gas stream through the sieve hole, the flow separation on the sharp edge of the hole, and the vortexes formed when gas impacts the downstream plate. By comparing the flow patterns and the pressure drop under different packings operating at different conditions, the effects of the geometric characteristics of the packing on the pressure drop could be clearly distinguished from the flow behaviours, so that the variations in pressure drop with various packing structures were clearly indicated. Finally, based on the experimental data and the simulated results, correlations for the prediction of the pressure drops were proposed. This work will provide a useful basis for understanding the flow behaviour of gas and liquid two‐phase flow in sieve plate packing.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative study of dry pressure drop and flow behaviour of gas flow through sieve plate packing

et al. 2020

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Flow characteristics of blade unit of a tridimensional rotational flow sieve tray under concurrent gas–liquid flow

et al. 2020

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The flow characteristics of the blade unit of a tridimensional rotational flow sieve tray were investigated. First, the flow patterns are defined under different liquid arrangement methods. They are bilateral film flow, continuous perforated flow, and dispersion‐mixing flow in overflow distribution, film and jet flow and jet and mixed flow in spray distribution. Second, the time and frequency domain analysis of the differential pressure pulsation signal in the blade unit is carried out, the main frequencies range is 2.0−5.5 Hz. The influence of perforation and mixing intensity on the flow pattern transition is clarified. Third, the rotational flow ratio of the gas–liquid phase is measured, the gas phase rotational flow range is 0.55–0.78, and the liquid phase range is 0.15–0.42. The influence of the operating conditions on the distribution of the rotational and perforated flow is investigated. Finally, a prediction model for the rotational flow ratio is proposed.

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Flow regimes and pressure drop of a composite tridimensional rotational flow sieve tray under concurrent gas‐liquid flow

et al. 2022

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A composite tridimensional rotational flow sieve tray (CTRST) is proposed. The flow patterns of CTRST were visually categorized, combined with the standard deviation of the pressure difference. In the TRST area of the internal packing‐type tray, the membrane‐drip column and foam‐embolic flow is present, while bubbly and milk froth‐ribbon flow is present in the packing area of the external packing‐type tray. The effect of the tray structure parameters on the pressure drop under co‐current flow was investigated. The dry and wet pressure drop is within 160 and 900 Pa, respectively. Under the same structural parameters, the pressure drop of the internal packing‐type tray was higher than that of the external packing‐type tray. The flow characteristics of the standard tray under the countercurrent flow were compared. The CTRST was found to be more suitable for co‐current flow. A prediction model pressure drop under co‐current was established with an error of 15.5%.

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Hydrodynamics and pressure loss of concurrent gas–liquid downward flow through sieve plate packing

Cited by 14 publications

References 29 publications

Comparative study of dry pressure drop and flow behaviour of gas flow through sieve plate packing

Comparative study of dry pressure drop and flow behaviour of gas flow through sieve plate packing

Flow characteristics of blade unit of a tridimensional rotational flow sieve tray under concurrent gas–liquid flow

Flow regimes and pressure drop of a composite tridimensional rotational flow sieve tray under concurrent gas‐liquid flow

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