Size distribution of CO<sub>2</sub> drops in a static mixer for ocean disposal

Tajima, Hideo; Yamasaki, Akira; Kiyono, Fumio; Teng, Ho

doi:10.1002/aic.10895

Cited by 9 publications

(8 citation statements)

References 13 publications

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“…[11][12][13][14][15][16][17] The present authors have developed another type of injection method for liquid CO 2 drops using Kenics static mixers. [18][19][20] A two-phase flow of liquid CO 2 and water was introduced to a Kenics static mixer, where the liquid CO 2 phase breaks into drops and disperses in a continuous water phase flow. Laboratory studies demonstrated that use of the Kenics static mixer decreased the average liquid CO 2 drop size, and made the size distribution uniform in comparison to using an empty pipe.…”

Section: Introductionmentioning

confidence: 99%

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An analysis of liquid CO₂ drop formation with and without hydrate formation in static mixers

et al. 2010

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The formation process of CO 2 drops in various types of Kenics Static Mixers was analyzed from the perspective of energy dissipation in the mixer, focusing on the formation of drop surfaces. Experimental studies on CO 2 drop formation were conducted under varying temperatures, pressure, and flow rates, with and without hydrate formation. Analysis of the CO 2 drop size and distribution at several locations within the static mixer was conducted, as of pressure drop in the mixer, to determine dissipation energies. In all the experimental conditions, by considering the surface energy for hydrate formation, the energy required for the formation of CO 2 drops correlated well with total energy dissipation by mixer flow, which is represented by a pressure drop along the mixer. This process has important applications to the formation of liquid CO 2 for ocean disposal as a countermeasure to global warming.

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Section: Introductionmentioning

confidence: 99%

“…It is known that the SMD/D SM of the drops formed in Kenics static mixers from liquid-liquid flows are well correlated with the Weber number. 21,23 In our previous work, we demonstrated that the relationship could be applied in a liquid CO 2 -water system with hydrate formation, 18,20 and the correlation equation is…”

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confidence: 98%

An analysis of liquid CO₂ drop formation with and without hydrate formation in static mixers

et al. 2010

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“…[4,5]. Tajima et al [6] found that CO 2 could fully dispersed in water after flowing through a static mixer and the correlation obtained in his study would be useful in an optimum design of the static mixer. Static mixer can be divided into some different types in China, such as SV, SK, SX, SH, SL and so on [5].…”

Section: Introductionmentioning

confidence: 91%

Design and Numerical Simulation of a Gas Mixer

Zhang

Guo

et al. 2015

MAPAN

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A high precision gas mixer used to mix gases of small flow rapidly and uniformly was proposed in this paper. Nine simulation schemes were proposed based on orthogonal test. There were four factors including dilute gas flow rate, the length of mixing tube, the diameter of the mixing chamber and the width of the mixing chamber in orthogonal test and each factor had three levels. The numerical simulation was carried out to explore the relationship of the flow field and the four factors and to calculate the concentration of carbon monoxide at the mixer's outlet. The primary factor that affected the mixing effectiveness was found out by means of range analysis. The heterogeneous degree of the distribution of carbon monoxide concentration at the mixer's outlet was smaller than 0.002 under different conditions. The results reached uniform micromixing in engineering and met the requirement of measurement and detection.

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“…Tajima et al proposed a new method for ocean disposal of anthropogenic CO 2 using KSM. They conducted experiments to investigate the variations in size and distribution of CO 2 drops in the mixer and analyzed the corresponding data using a statistical method . Drop dispersion of high‐viscosity polymer material in low‐viscosity hexadecane was done using a static mixer.…”

Section: Introductionmentioning

confidence: 99%

“…They conducted experiments to investigate the variations in size and distribution of CO 2 drops in the mixer and analyzed the corresponding data using a statistical method. [23] Drop dispersion of high-viscosity polymer material in low-viscosity hexadecane was done using a static mixer. The spherical single beads had narrow and normal size distribution.…”

Section: Introductionmentioning

confidence: 99%

Chaotic mixing characteristics in static mixers with different axial twisted‐tape inserts

Meng

Song

et al. 2015

Can J Chem Eng

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The distinction of chaotic advection and mixing of high‐viscosity fluids in tubes equipped with four different twisted tapes, including KSM, MSM, RSM, and SSM, were evaluated by Lagrangian simulation. ∼23 550 massless particle tracers marked by red and black colours were respectively released in the semicircle and concentric circles of the inlet cross‐section. Mixing performance was evaluated qualitatively by tracking Poincaré sections, and quantitatively by the variation coefficient as a function of axial position. Poincaré sections of tracers showed that KSM had the best mixing performance and RSM had two oval‐shaped segregated areas which periodically moved clockwise 90° in the cross‐sections of adjacent twisted tapes. Extensional efficiencies were computed radially and axially for all configurations. Both results showed that large dispersive mixing areas existed in the transition section. At the beginning of the first and end of the last element, the largest extensional efficiencies emerged, which were 1.07−1.21 times that at the transitions. The profiles of stretching rate showed that RSM tape had the weakest micro‐mixing ability, and the other three mixers had nearly identical stretching rates, much higher than RSM for Re < 10. With increasing Re, the mixing performance of MSM decreased first and then increased to be slightly higher than that of RSM. The secondary flows at transition regions were largely weakened for the different twist direction in the MSM. The respective roles of flow reversal and twist direction on mixing were evaluated with the stretching rates between static mixers and conventional stirred vessels.

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Size distribution of CO₂ drops in a static mixer for ocean disposal

Cited by 9 publications

References 13 publications

An analysis of liquid CO₂ drop formation with and without hydrate formation in static mixers

An analysis of liquid CO₂ drop formation with and without hydrate formation in static mixers

Design and Numerical Simulation of a Gas Mixer

Chaotic mixing characteristics in static mixers with different axial twisted‐tape inserts

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Size distribution of CO2 drops in a static mixer for ocean disposal

Cited by 9 publications

References 13 publications

An analysis of liquid CO2 drop formation with and without hydrate formation in static mixers

An analysis of liquid CO2 drop formation with and without hydrate formation in static mixers

Design and Numerical Simulation of a Gas Mixer

Chaotic mixing characteristics in static mixers with different axial twisted‐tape inserts

Contact Info

Product

Resources

About

Size distribution of CO₂ drops in a static mixer for ocean disposal

An analysis of liquid CO₂ drop formation with and without hydrate formation in static mixers

An analysis of liquid CO₂ drop formation with and without hydrate formation in static mixers