Mixing intensification in a horizontal self-cleaning twin-shaft kneader with a highly viscous Newtonian fluid

Cheng, Wenkai; Yang, Yong; Jiang, Shuxian; Wang, Jiajun; Gu, Xue‐Ping; Feng, Lianfang

doi:10.1016/j.ces.2019.03.005

Cited by 14 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cheng et al used the finite element method to simulate the mixing process in a fully filled horizontal twin-shaft kneader. 8 The intermeshing kneading bars can greatly enhance the mixing process in the angular direction. However, the film formation and mass transfer characteristics in such a kind of kneader have not been much studied so far.…”

Section: Introductionmentioning

confidence: 99%

“…There exists a great challenge to investigate film formation and mass transfer process by numerical simulation due to the periodic intermeshing in the overlapping zone. 8 Hence, the objective of this work is to analyze the film formation characteristics in a horizontal twin-shaft kneader by means of a visual experimental technique. The absorption of CO 2 in syrup solution has been adopted to investigate the mass transfer characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Results show that mixing in the radial direction is very fast and the surface renewal can be greatly intensified. Cheng et al used the finite element method to simulate the mixing process in a fully filled horizontal twin-shaft kneader . The intermeshing kneading bars can greatly enhance the mixing process in the angular direction.…”

Section: Introductionmentioning

confidence: 99%

“…A profound understanding of the involved mass transfer is still lacking. There exists a great challenge to investigate film formation and mass transfer process by numerical simulation due to the periodic intermeshing in the overlapping zone . Hence, the objective of this work is to analyze the film formation characteristics in a horizontal twin-shaft kneader by means of a visual experimental technique.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Film Formation and Mass Transfer Characteristics in a Horizontal Self-Cleaning Twin-Shaft Kneader with Highly Viscous Newtonian Fluids

Cheng

Wang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

The visual experimental technique was used to investigate the film formation process in a horizontal self-cleaning twin-shaft kneader with highly viscous Newtonian fluids. The absorption of CO2 in syrup solution was adopted to study the mass transfer characteristics. There exist a radial unbounded film and bounded film on the disk element, while an axial unbounded film and bounded film are generated on the kneading bar. The minimum rotating speed for the axial unbounded film formation on the kneading bar is higher than that for the radial unbound film formation on the disk element. The twin-shaft kneader possesses much better mass transfer performance than the twin-shaft wheel reactor.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Film Formation and Mass Transfer Characteristics in a Horizontal Self-Cleaning Twin-Shaft Kneader with Highly Viscous Newtonian Fluids

Cheng

Wang

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…e results showed that the mixing was highly dependent on the initial position whether the particle groups were rst placed close to or far away from the intermeshing zone. Cheng et al [9] carried out particle tracking technique to simulate mixing process of a highly viscous Newtonian uid in a horizontal self-cleaning twin-sha kneader. e result of nite element method proved that the horizontal twin-sha kneader is e cient for mixing highly viscous uids due to the intermeshing of kneading bars.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Mixing Characteristics in the Eccentric Rotor Extruder with Different Process Conditions and Structural Parameters

Fan

Yang

Huang

et al. 2019

Advances in Polymer Technology

View full text Add to dashboard Cite

Numerical simulation was performed with the computational fluid dynamics analysis software POLYFLOW to investigate the influence of different process conditions and structural parameters on mixing characteristics of the eccentric rotor extruder. The intensity of shear and elongational flow strengthened when the rotational speed increased, but the time for material to stay in the extruder will be reduced. At the same time, the increase of radius and eccentricity could effectively promote the mixing performance. On the contrary, the mixing capacity reduced with the increase of the pitch. The results can be useful to optimize the structure design and guide production.

show abstract

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

View full text Add to dashboard Cite

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.

show abstract

Mixing intensification in a horizontal self-cleaning twin-shaft kneader with a highly viscous Newtonian fluid

Cited by 14 publications

References 14 publications

Film Formation and Mass Transfer Characteristics in a Horizontal Self-Cleaning Twin-Shaft Kneader with Highly Viscous Newtonian Fluids

Film Formation and Mass Transfer Characteristics in a Horizontal Self-Cleaning Twin-Shaft Kneader with Highly Viscous Newtonian Fluids

Numerical Simulation of Mixing Characteristics in the Eccentric Rotor Extruder with Different Process Conditions and Structural Parameters

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

Contact Info

Product

Resources

About