Experimental and modeling study on CO2 absorption in a cyclone scrubber by phenomenological model and neural networks

Mariana, Mariana; Sumida, Ken-ichi; Satake, T.; Maezawa, Akinori; Takeshita, Takenari; Uchida, Shigeo

doi:10.1007/bf02705492

Cited by 12 publications

(5 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This correlation is valid for a wide range of Re and Sc . This model was used to describe the mass transfer process of CO 2 absorption in sodium solutions in a cyclone scrubber . It was observed that the mass transfer rate increased with the decrease in droplet diameter, and the removal rate was about 98% when the droplet diameter was 1 μm.…”

Section: Gas–liquid Mass Transfer Processmentioning

confidence: 91%

“…Gas phase mass transfer is the controlling step for the gas absorption process. , Gas-phase MTC was calculated by Steinberger and Treybal’s correlation . This correlation is valid for a wide range of Re and Sc . This model was used to describe the mass transfer process of CO 2 absorption in sodium solutions in a cyclone scrubber .…”

Section: Gas–liquid Mass Transfer Processmentioning

confidence: 99%

See 1 more Smart Citation

Computational Fluid Dynamics Based Modeling of Gas Absorption Process: A State-of-the-Art Review

Liu,

Wang,

Cai

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The effective removal of gas phase species relies on effective gas liquid hydrodynamic contact coupling with fast chemical reaction rates. To promote mass transfer rate and the development of reagents, computational fluid dynamic modeling has long been recognized as an effective methodology for the quantification of physical and chemical parameters. The simulation of the gas liquid process involves the coupling of models including multiphase flow, turbulence, interfacial forces, mass transfer, and chemical reactions. The selection of suitable models according to practical applications has been challenging. In terms of multiphase flow, volume of fraction, Euler−Euler, and Euler−Lagrange approaches are discussed. With regard to turbulence, direct numerical simulation, large eddy simulation, and Reynolds averaged Navier−Stokes approach are compared. With respect to interfacial forces, the dominance of drag, lift, virtual mass, wall lubrication, and turbulent dispersion forces for different situations are obtained. In terms of mass transfer, the development and applications of film model, dimensionless analysis, penetration model, and surface renewal model are discussed. Different methodologies to enhance mass transfer include improvement of equipment structure, addition of nanofluid, and exposure to an energy field are summarized. To accelerate the computational process, four methods including the space−time conservation element and solution element model, compartmental model, reduction in dimension, and multiscale approach are discussed. This paper intends to provide a thorough review on the applications of different models to different situations and, in particular, to reveal the restrictions of different models. Overall, this study lays the foundation for future studies on the optimization of scrubbers for large scale practical applications. It also allows a deeper understanding of the interactions of fluid dynamics, mass transfer, and chemical reactions.

show abstract

Section: Gas–liquid Mass Transfer Processmentioning

confidence: 91%

Section: Gas–liquid Mass Transfer Processmentioning

confidence: 99%

Computational Fluid Dynamics Based Modeling of Gas Absorption Process: A State-of-the-Art Review

Liu,

Wang,

Cai

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Gambar 1. Model reaksi pozzolanic Ca(OH)2 dengan silika yang mengandung DE (Mariana, 2003) Beberapa literature juga menyebutkan bahwa reaktifitas sorbent sangat tergantung pada luas permukaan kontak sorbent (specific surface area) (Klinspor dkk., 1983;1984). Secara jelas pengaruh luas permukaan kontak terhadap laju reaksi dengan menggunakan Ca(OH)2 sebagai sorbent padat telah direport oleh beberapa literatur (Irabien dkk., 1992;Ortiz dkk., 1993).…”

Section: Penelitian Ini Difokuskan Pada Persiapan Absorbentunclassified

“…Hidrogen terbentuk dari reaksi antara Ca(OH)2 dengan gas CO hasil pembakaran (Alizar, 2005). diameter pori (Mariana, 2003).…”

Section: Pengaruh Jenis Sorbent Terhadap Efesiensi Penyerapan Gasunclassified

Penyerapan Gas Co Hasil Pembakaran Sampah Menggunakan Modifikasi Sorbent Ca(oh)2, Tanah Diatomeae (De) Dan Kompos Dalam Reactor Fixed Bed

Hasyim

2020

View full text Add to dashboard Cite

Penelitian ini bertujuan untuk meningkatkan reaktifitas sorbent Ca(OH)2 dengan menggunakan tanah diatomeae sebagai sumber silika dan kompos sebagai sumber biosorbent. Tanah diatomea umumnya mengandung CaO, SiO2 dan Al2O3. Reaksi antara SiO2 dengan Ca(OH)2 membentuk kalsium silicate hidrat (CaO.SiO2.2H2O) yang mempunyai porositas dan reaktifitas yang tinggi. Kompos mengandung bakteri sebagai biosorbent yang dapat mengubah gas CO menjadi CO2 dan CH4. Hasil penelitian menunjukkan bahwa reaktifitas sorbent Ca(OH)2 meningkat dengan penambahan DE dan kompos. Hasil penelitian juga menunjukkan bahwa penyerapan gas CO meningkat dengan meningkatnya tinggi unggun sorbent dan temperatur. Penyerapan gas CO tertinggi diperoleh pada penggunaan modifikasi sorbent Ca(OH)2/DE/kompos (3:1:1), temperatur 150oC dan tinggi unggun sorbent 6 cm dari variabel yang dilakukan.

show abstract

“…Great efforts to explore cyclonic flow in process-enhanced separation [1][2][3][4] and mass transfer [5][6][7][8] have been made in the past decades. They mainly focused on the fields of gas separation and purification [9][10][11], e.g., collecting particles and capturing gas pollutants including SO 2 [12,13], H 2 S-CO 2 [14,15], and NH 3 [16]. Compared to the traditional enhanced absorption by physical processes, i.e., swirl plate [17], rotating bed [18,19], and impinging stream [20,21], the cyclonic flow provides unique advantages of high enhancement performance, low energy consumption, simple structure, and convenient operation [14,16,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Flow Pattern and Pressure Drop for Small Long‐Cylinder Cyclones Operating at High Flow Rates

Dong-shen

Zhao

2019

Chem Eng & Technol

View full text Add to dashboard Cite

To address the gas flow pattern and pressure drop characteristics for small longcylinder cyclones (SLCCs) in the high operating flow rate range, experimental investigation and computational fluid dynamics (CFD)-based simulation were performed. The pressure drop coefficient depends insignificantly on the Reynolds number at high flow rates. The tangential and axial velocities present the Rankine vortex and the roughly inverted V-shaped distribution, respectively, similar to those in typical cyclones. The CFD simulation approximated well the experimental data of pressure drop. The pressure drop caused by vortex loss, turbulent energy loss, and resistance loss accounted for 72.5 % of the total pressure drop. The Stairmand model was found to be relatively accurate among the classical pressure drop models for the proposed cyclone. The results may help in the design and applications of cyclone separators and reactors.

show abstract

Experimental and modeling study on CO2 absorption in a cyclone scrubber by phenomenological model and neural networks

Cited by 12 publications

References 22 publications

Computational Fluid Dynamics Based Modeling of Gas Absorption Process: A State-of-the-Art Review

Computational Fluid Dynamics Based Modeling of Gas Absorption Process: A State-of-the-Art Review

Penyerapan Gas Co Hasil Pembakaran Sampah Menggunakan Modifikasi Sorbent Ca(oh)2, Tanah Diatomeae (De) Dan Kompos Dalam Reactor Fixed Bed

Flow Pattern and Pressure Drop for Small Long‐Cylinder Cyclones Operating at High Flow Rates

Contact Info

Product

Resources

About