Hydrodynamic characteristics of a three-stage dual-flow sieve plate scrubber

Kurella, Swamy; Meikap, B.C.

doi:10.1016/j.sajce.2017.04.003

Cited by 5 publications

(6 citation statements)

References 21 publications

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“…Observations indicate that for trays with a larger hole diameter (Trays 2 and 3), a decrease in froth height occurred for lower gas flow rates, as discussed before. In addition, it was visually observed that a small number of holes The experimental results of h CL are compared to those predicted by the more recent correlation of Swamy and Meikap (2017), 50 according to eq 5, and are shown in Figure 10.…”

Section: Resultsmentioning

confidence: 84%

“…The experimental results of h CL are compared to those predicted by the more recent correlation of Swamy and Meikap (2017), according to eq , and are shown in Figure . …”

Section: Results and Discussionmentioning

confidence: 95%

“…Fluid dynamics parameters of different fractal and conventional geometries of dual-flow trays were evaluated in a 340 mm internal diameter and 1000 mm height column made from acrylic. All tests were carried out in a gas/liquid system in countercurrent flow using an air/water system to represent the gas and liquid phases, respectively, according to similar studies. ,,,− The experimental setup is shown in Figure .…”

Section: Experimental Setupmentioning

confidence: 99%

“…Several correlations are available in the literature for prediction of dry ,,− and wet pressure drop ,, and froth height ,,, and also for clear liquid height ,, estimate in the tray, even if none of the correlations available have considered trays with fractal geometry, as proposed in this work.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Fluid Dynamics Study of a New Fractal Dual-Flow Tray

Brondani

Mayer

Hoffmann

et al. 2020

Ind. Eng. Chem. Res.

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Countercurrent flow in conventional dual-flow trays results in segregation in liquid and vapor flow, reducing tray efficiency. Therefore, a new dual-flow tray with fractal geometry was experimentally investigated. Air and water were used as vapor and liquid models. Flow regime and fluid dynamics parameters such as dry (ΔP d ) and wet (ΔP w ) tray pressure drop, froth height (H), clear liquid height (h CL ), and froth porosity (ε) were evaluated. The results showed a lower and a more stable ΔP w in the fractal tray with a smaller hole diameter compared to the conventional tray when F s ranged from 0.59 to 1.04. Fluid dynamics parameters such as H, h CL , and ε were similar between the fractal tray with a smaller hole diameter and the conventional tray for capacity factor (F s ) values from 0.68 to 1.04 and for all values of liquid flow rate (Q L ). Fractal geometry provided a more stable liquid and vapor flow through the alternating formation of high and low pressure microzones.

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Section: Resultsmentioning

confidence: 84%

“…The experimental results of h CL are compared to those predicted by the more recent correlation of Swamy and Meikap (2017), according to eq , and are shown in Figure . …”

Section: Results and Discussionmentioning

confidence: 95%

Section: Experimental Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Fluid Dynamics Study of a New Fractal Dual-Flow Tray

Brondani

Mayer

Hoffmann

et al. 2020

Ind. Eng. Chem. Res.

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“…4). The use of air at atmospheric pressure to represent the single-phase flow of the gas phase is a common procedure in many studies in this field [9,16,27,34,38,[43][44][45][46][47][48][49][50].…”

Section: Cfd Modelmentioning

confidence: 99%

Experimental and Computational Fluid Dynamics Validation of Correlations for Dry Pressure Drop in Trays without Downcomer

et al. 2020

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The dry tray pressure drop (ΔPd) is a design parameter that provides preliminary information about the total pressure drop. This work aimed to assess correlations for ΔPd prediction for different types of trays without downcomer and to evaluate the effects of the free area ratio (φ) and the hole diameter (d) on ΔPd. Assessment was performed by comparing results of several correlations with those from an experimentally validated computational fluid dynamics simulation. The study shows that the correlations of Červenka and Kolář, Bennett, Agrawal and Cook, and Stichlmair and Mersmann predicted the dry pressure drop satisfactorily. The correlation of Bennett, Agrawal and Cook can be recommended for the prediction of ΔPd for a wide range of geometries and operation conditions. Also, φ has a higher influence on ΔPd than d.

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Simulation of a Multistaggered Baffle Scrubber to Enhance the Efficiency of Simultaneous Desulfurization and Denitrification

Zeng,

Lee,

Kim

et al. 2024

ACS Omega

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In this study, we conduct simulation research on simultaneous desulfurization and denitrification in a multistaggered baffle spray scrubber. By employing two-phase flow simulations within the Euler–Lagrange framework and calculating the gas–liquid mass transfer rate with user-defined functions, we comprehensively analyzed the effects of various operational parameters. Initially, we validated our simulation model by comparing the simulation results with experimental data. Under conditions of a 0.2 mm droplet diameter, a liquid-to-gas ratio (L/G) of 12 L/m3, and a gas flow rate of 5 CMM using a full cone nozzle, the simulation indicated a desulfurization efficiency of 99.90 versus 99.84% obtained experimentally and a denitrification efficiency of 92.01 versus 90.67% obtained experimentally. This comparison confirmed the reliability of the simulation model. Our findings indicate that a droplet size of 2 mm is optimal, enhancing the desulfurization efficiency from 99.90 to 99.98% and the denitrification efficiency from 92.01 to 99.76%. However, when the droplet size exceeds 2 mm, efficiencies marginally decrease. Increasing the liquid-to-gas ratio to 16 L/m3 further improves desulfurization and denitrification efficiencies to 99.98 and 99.80%, respectively. In contrast, higher inlet flue gas flow rates reduce these efficiencies, with a decline observed from 100% to as low as 93.90% for denitrification with 2 mm droplets. Additionally, the use of a swirl cone nozzle, compared to full or hollow cone nozzles, better disperses droplets, enhancing the gas–liquid contact and achieving efficiencies of 99.99% for desulfurization and 99.81% for denitrification with 2 mm droplets. These insights are valuable for optimizing operational conditions in industrial-scale spray scrubbers, significantly contributing to mitigating the environmental impacts of industrial emissions.

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Hydrodynamic characteristics of a three-stage dual-flow sieve plate scrubber

Cited by 5 publications

References 21 publications

Experimental Fluid Dynamics Study of a New Fractal Dual-Flow Tray

Experimental Fluid Dynamics Study of a New Fractal Dual-Flow Tray

Experimental and Computational Fluid Dynamics Validation of Correlations for Dry Pressure Drop in Trays without Downcomer

Simulation of a Multistaggered Baffle Scrubber to Enhance the Efficiency of Simultaneous Desulfurization and Denitrification

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