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Your search keyword '"Zhang-Nan Wen"' showing total 3 results
Start Over Author "Zhang-Nan Wen" Topic 02 engineering and technology
3 results on '"Zhang-Nan Wen"'

1. Novel Wire Mesh Packing with Controllable Cross-Sectional Area in a Rotating Packed Bed: Mass Transfer Studies

Author

Liang-Liang Zhang, Guang-Wen Chu, Zhang-Nan Wen, Wei Wu, Baochang Sun, and Yong Luo

Subjects
Packed bed, Materials science, Wire mesh, General Chemical Engineering, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Industrial and Manufacturing Engineering, 020401 chemical engineering, Mass transfer, High mass, 0204 chemical engineering, Composite material, 0210 nano-technology
Abstract

Wire mesh packing has been extensively utilized in laboratory and industry applications in rotating packed bed (RPB) because of the high mass transfer performance and low cost. Conventional wire me...

Published
2020

2. Mass transfer intensification mechanism of Al2O3 sphere packing in a rotating packed bed

Author

Yong Luo, Zhang-Nan Wen, Chi Ma, Guang-Wen Chu, and Baochang Sun

Subjects
Packed bed, Mass transfer coefficient, Materials science, General Chemical Engineering, Thermodynamics, 02 engineering and technology, General Chemistry, Trickle-bed reactor, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Industrial and Manufacturing Engineering, 0104 chemical sciences, Surface tension, Adsorption, Sphere packing, Mass transfer, Environmental Chemistry, Absorption (chemistry), 0210 nano-technology
Abstract

In this work, the gas–liquid mass transfer performance of rotating packed bed (RPB) with Al2O3 sphere packing, in term of volumetric liquid-side mass transfer coefficient (kLae), was investigated by CO2-NaOH chemical absorption system. The adsorption performance of Al2O3 spheres was also evaluated by an ink adsorption method. Results showed that the kLae values of RPB with Al2O3 sphere packing were higher than those of RPB with nonporous sphere packing, and over one magnitude order higher than those of trickle bed reactor (TBR) with Al2O3 sphere packing. The ink adsorption, film diffusion and pore diffusion rates of Al2O3 spheres have been greatly improved under the high gravity field, and it has been found that the surface tension was the main driving force of ink adsorption. Moreover, the adsorption kinetics was investigated and the experimental data fitted well with the pseudo-first-order adsorption kinetics model.

Published
2022

3. Oxygen mass transfer intensification in an inner-loop rotor-stator reactor: Production of sodium gluconate as an example

Author

Baochang Sun, Guang-Wen Chu, Yong Luo, Yan-Yun Shao, Zhang-Nan Wen, and Xiao-Ting Wang

Subjects
Work (thermodynamics), Materials science, Stator, Rotor (electric), Process Chemistry and Technology, General Chemical Engineering, Energy Engineering and Power Technology, Continuous stirred-tank reactor, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Redox, Industrial and Manufacturing Engineering, law.invention, chemistry.chemical_compound, 020401 chemical engineering, Chemical engineering, chemistry, law, Scientific method, 0204 chemical engineering, 0210 nano-technology, Inner loop, Sodium gluconate
Abstract

The biocatalytic oxidation exists widely in biochemical industry. However, the oxidation reaction rate is usually limited by oxygen mass transfer. In this work, an inner-loop rotor-stator reactor (IL-RSR) was employed as a promising reactor for the process intensification of oxygen mass transfer, aiming to match the rate of oxidation reaction. The oxygen mass transfer coefficient (kLa) of the IL-RSR was experimentally studied. Then, the biocatalytic oxidation of glucose to produce sodium gluconate (SG) was selected as an example of working system to evaluate biocatalytic oxidation performance of the IL-RSR. The results indicated that the experimental value of kLa was in the range of 0.00984∼0.02758 s−1 in the IL-RSR. The SG production rate was up to 6∼12 g/(L·h) in the IL-RSR, which was 7 times that in a stirred tank reactor (STR). IL-RSR shows potential prospects in the field of biocatalytic oxidations.

Published
2021

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