Investigation of the intrinsic reaction kinetics and the mass transfer phenomena of nonanoic acid esterification with 2-ethylhexanol promoted by sulfuric acid or Amberlite IR120

2020 ◽  
pp. 127236
Author(s):  
Vincenzo Russo ◽  
Francesco Taddeo ◽  
Tommaso Cogliano ◽  
Rosa Vitiello ◽  
Roberto Esposito ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Sulfuric Acid ◽  
Reaction Kinetics ◽  
Nonanoic Acid ◽  
Acid Esterification

CFD Simulation of the Particle Dispersion Behavior and Mass Transfer–Reaction Kinetics in non-Newton Fluid with High Viscosity

2019 ◽  
Vol 17 (7) ◽  
Author(s):  
Le Xie ◽  
Qi-An Wang ◽  
Xian-Jin Luo ◽  
Zheng-Hong Luo
Keyword(s):  
Mass Transfer ◽  
Reaction Kinetics ◽  
Transfer Reaction ◽  
High Viscosity ◽  
Particle Dispersion ◽  
Agitation Speed ◽  
Fluid Viscosity ◽  
Condensation Polymerization ◽  
Cross Model ◽  
Dispersion Behavior

Abstract Solid particle dispersion and chemical reactions in high-viscosity non-Newtonian fluid are commonly encountered in polymerization systems. In this study, an interphase mass transfer model and a finite-rate/eddy-dissipation formulation were integrated into a computational fluid dynamics model to simulate the dispersion behavior of particles and the mass transfer–reaction kinetics in a condensation polymerization-stirred tank reactor. Turbulence fields were obtained using the standard k–ε model and employed to calculate the mixing rate. Cross model was used to characterize the rheological property of the non-Newton fluid. The proposed model was first validated by experimental data in terms of input power. Then, several key operating variables (i.e. agitation speed, viscosity, and particle size) were investigated to evaluate the dispersive mixing performance of the stirred vessel. Simulation showed that a high agitation speed and a low fluid viscosity favored particle dispersions. This study provided useful guidelines for industrial-scale high-viscosity polymerization reactors.

A study on mass transfer–reaction kinetics of NO absorption by using UV/H2O2/NaOH process

Fuel ◽  
2013 ◽  
Vol 108 ◽  
pp. 254-260 ◽  
Author(s):  
Yangxian Liu ◽  
Jianfeng Pan ◽  
Aikun Tang ◽  
Qian Wang
Keyword(s):  
Mass Transfer ◽  
Reaction Kinetics ◽  
Transfer Reaction ◽  
Kinetics Of ◽  
No Absorption

Comprehensive mass transfer and reaction kinetics studies of CO2 absorption into aqueous solutions of blended MDEA–MEA

2012 ◽  
Vol 209 ◽  
pp. 501-512 ◽  
Author(s):  
Teerawat Sema ◽  
Abdulaziz Naami ◽  
Kaiyun Fu ◽  
Mohamed Edali ◽  
Helei Liu ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Aqueous Solutions ◽  
Reaction Kinetics ◽  
Co2 Absorption ◽  
Kinetics Studies

Hydrodynamics, mass transfer, and photocatalytic phenol selective oxidation reaction kinetics in a fixed TiO2microreactor

AIChE Journal ◽  
2014 ◽  
Vol 61 (2) ◽  
pp. 572-581 ◽  
Author(s):  
Matic Krivec ◽  
Andrej Pohar ◽  
Blaž Likozar ◽  
Goran Dražić
Keyword(s):  
Mass Transfer ◽  
Reaction Kinetics ◽  
Selective Oxidation ◽  
Oxidation Reaction
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