A three‐zone mass transfer model for a rotating packed bed

AIChE Journal ◽  
2019 ◽  
Vol 65 (6) ◽  
Author(s):  
Le Sang ◽  
Yong Luo ◽  
Guang‐Wen Chu ◽  
Bao‐Chang Sun ◽  
Liang‐Liang Zhang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Rotating Packed Bed

A Mass Transfer Model for Devolatilization of Highly Viscous Media in Rotating Packed Bed

2010 ◽  
Vol 18 (2) ◽  
pp. 194-201 ◽  
Author(s):  
Woyuan LI ◽  
Wei WU ◽  
Haikui ZOU ◽  
Guangwen CHU ◽  
Lei SHAO ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Rotating Packed Bed ◽  
Viscous Media

scholarly journals External Mass Transfer Model for Hydrogen Peroxide Decomposition by Terminox Ultra Catalase in a Packed-Bed Reactor

2017 ◽  
Vol 38 (2) ◽  
pp. 307-319 ◽  
Author(s):  
Ireneusz Grubecki
Keyword(s):  
Mass Transfer ◽  
Reaction Rate ◽  
Packed Bed ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
External Mass Transfer ◽  
Hydrogen Peroxide Decomposition ◽  
Reaction Rate Constants ◽  
Peroxide Decomposition ◽  
External Mass Transfer Model

Abstract It is known that external diffusional resistances are significant in immobilized enzyme packed-bed reactors, especially at large scales. Thus, the external mass transfer effects were analyzed for hydrogen peroxide decomposition by immobilized Terminox Ultra catalase in a packed-bed bioreactor. For this purpose the apparent reaction rate constants, kP, were determined by conducting experimental works at different superficial velocities, U, and temperatures. To develop an external mass transfer model the correlation between the Colburn factor, JD, and the Reynolds number, Re, of the type JD = K Re(n-1) was assessed and related to the mass transfer coefficient, kmL. The values of K and n were calculated from the dependence (am kp-1 - kR-1) vs. Re-1 making use of the intrinsic reaction rate constants, kR, determined before. Based on statistical analysis it was found that the mass transfer correlation JD = 0.972 Re-0.368 predicts experimental data accurately. The proposed model would be useful for the design and optimization of industrial-scale reactors.

Mass and Heat Transfer in Multi-Pulverizing RPB

2011 ◽  
Vol 396-398 ◽  
pp. 311-314
Author(s):  
Hai Hui Chen ◽  
Xu Guang Min
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Transfer Coefficient ◽  
Packed Bed ◽  
Experimental Models ◽  
Transfer Model ◽  
Axial Fan ◽  
Transfer Property ◽  
Rotating Packed Bed ◽  
Mass And Heat Transfer

New typical cross-flow Rotating Packed Bed (RPB) called multi-pulverizing RPB was manufactured. Mass and heat transfer property of the new type PRB were studied by two experimental models. In the mass transfer model, the axial fan pumping gas press is only 100 Pa, mass transfer coefficient is similar to countercurrent RPB. In the heat transfer experiment, the axial fan pumping gas press is only 120 Pa; volumetric heat transfer coefficient is from 75 kW.m-3. K-1 to 100 kW.m-3. K-1.

scholarly journals EXTERNAL MASS TRANSFER MODEL FOR DEGRADATION OF SIMULATED TEXTILE EFFLUENT IN PACKED BED REACTOR

2019 ◽  
Vol 14 (01) ◽  
pp. 254-260
Author(s):  
S. Rengadurai ◽  
B. Preetha ◽  
A. Ashok Kumar ◽  
K. Manikandan ◽  
P. Elavarasan
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Textile Effluent ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
External Mass Transfer ◽  
External Mass Transfer Model
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