Interfacial mass transfer intensification with highly viscous mixture

Xie, Hanguang; Zong, Yanbing; Shen, Lian; Dai, Guohao

doi:10.1016/j.ces.2021.116531

Cited by 7 publications

(2 citation statements)

References 45 publications

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“…Changing the solid disk to a windowed disk, the velocity change of the liquid film in the disk was analyzed, and the average deformation rate of the liquid film in the windowed disk was larger. Hu et al 19 and Xie et al 20–22 also proved that the liquid film velocity in the window area is faster, the liquid film thickness is thinner, and the maximum local mass transfer rate can be increased by 2–6.5 times through experiments and numerical simulations. Li et al 23 analyzed the change of film thickness and surface renewal frequency with angular coordinates by changing the type of spokes, and obtained that the film thickness in the windowed area decreased by 70% and the surface renewal accelerated by 30%.…”

Section: Introductionmentioning

confidence: 97%

Simulation study on mass transfer characteristics and disk structure optimization of a rotating disk reactor with high viscosity region

Chen,

Sun,

et al. 2023

J of Applied Polymer Sci

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Due to the excellent film‐forming specific surface area of the disk reactor, its application in the polymer devolatilization process can greatly improve the devolatilization performance of the equipment. In view of this, the fluid volume function method in computational fluid dynamics is used to simulate the film forming performance and surface renewal performance in high viscosity zone of disk reactor. In the disk window area, the liquid film thickness becomes thinner and the surface update frequency becomes faster, indicating that the disk window has a positive effect. The devolatilization performance of five new disk structures under different operating conditions is compared and analyzed. It was found that the influence of liquid level height on film area was greater than that of viscosity and rotation speed, the porous sector disk has excellent surface renewal performance and the baffle can achieve better mass transfer efficiency at a distance of 45–60 mm from the disk.

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Section: Introductionmentioning

confidence: 97%

Simulation study on mass transfer characteristics and disk structure optimization of a rotating disk reactor with high viscosity region

Chen,

Sun,

et al. 2023

J of Applied Polymer Sci

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“…Ohara et al 17 developed a method to estimate the devolatilization surface area of the twin-screw extruders using 2.5D Hele-Shaw flow model and FEM. Recently, Xie et al 18,19 found a new type of film, namely twin-liquid film, on a vertical plate with a window by CFD simulation. Twin-liquid films combined the motility of free films and the stability of bounded films.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics and film formation characteristics in a horizontal self‐cleaning twin‐shaft kneader for polymer devolatilization

Liao

Hong³

et al. 2022

J of Applied Polymer Sci

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A deep understanding of hydrodynamics and film formation characteristics is a prerequisite for the design of twin‐shaft kneaders. In this work, the hydrodynamics and film formation characteristics of a self‐cleaning twin‐shaft kneader are investigated using computational fluid dynamics method. Because of the intermeshing interaction and scratching action of the kneader rods, both bounded films and free films coexist in the kneader. Since both shafts rotate clockwise, more liquid is accumulated in the left cylinder. The liquid level of the left cylinder is higher which reduces the film formation rate of the left zone. The film formation rate in the right zone is 1.3–1.8 times that of the left zone and overlapping zone. The differences between the left and right cylinders would cause inconsistent devolatilization performances. To reduce the negative effects of asymmetric level, a static kneading rod is used to reduce the liquid level of the left zone and increase the film formation rate by 15%. We notice that adding a static kneading rod reduces the power consumption by 10%–30% compared with increasing the rotating speed to the same film formation rate. It could be an efficient method for polymer devolatilization.

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Structured packing geometry study for liquid-phase mass transfer and hydrodynamic performance using CFD

Macfarlan

Phan

Eldridge

2022

Chemical Engineering Science

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Interfacial mass transfer intensification with highly viscous mixture

Cited by 7 publications

References 45 publications

Simulation study on mass transfer characteristics and disk structure optimization of a rotating disk reactor with high viscosity region

Simulation study on mass transfer characteristics and disk structure optimization of a rotating disk reactor with high viscosity region

Hydrodynamics and film formation characteristics in a horizontal self‐cleaning twin‐shaft kneader for polymer devolatilization

Structured packing geometry study for liquid-phase mass transfer and hydrodynamic performance using CFD

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