【摘 要】
：
This study focuses on the fluid flow and mass transfer performance during reactive gas-liquid absorption in a T-junction microchannel by a high speed camera.The aqueous solution of monoethanolamine(ME
【机 构】
：
School of Chemical Engineering and Technology,State Key Laboratory of Chemical Engineering,Collabora
【出 处】
：
The 14th International Conference on Microreactivity Technol
论文部分内容阅读
This study focuses on the fluid flow and mass transfer performance during reactive gas-liquid absorption in a T-junction microchannel by a high speed camera.The aqueous solution of monoethanolamine(MEA)/1-Butyl-3-methylimidazolium tetrafluoroborate([Bmim][BF4])and pure CO2 gas were selected as the working fluids.Four main flow regimes were discerned under different operating conditions: bubbly-slug flow,slug flow,slug-annular flow,and annular flow.In the slug flow,the influences of operating conditions and the concentrations of liquid on overall liquid side volumetric mass transfer coefficient(kLa)and overall liquid side mass transfer coefficient(kL)were investigated in terms of the image analysis and processing.The experimental results show that both the kLa and kL increase with the increase of gas and liquid flow rate and liquid concentration.Additionally,other characteristics such as bubble formation frequency,bubble and slug lengths,gas hold-up,and the specific surface area(a)were also discussed under different operating conditions.
其他文献
With the rapid development of microfabrication technology,more fabrication methods and applications of microchannel heat exchanger have been frequently reported in last two decade1-3,and those methods
Experimental study of mass transfer in water/ionic liquid(IL)microdroplet systems was carried out using micro-LIF(laser-induced fluorescence)measurement method,where [C4mim][PF6] was adopted as a repr
A pendant drop method was utilized to visually observe the mass transfer process of an acrylonitrile droplet in a bio-hydration system.First,the dissolution of acrylonitrile was observed in deionized
Coaxial microfluidic devices were used to investigate the formation of acrylonitrile droplets and the dissolution of acrylonitrile during the droplet generation stage in a bio-hydration system.The ave
Micromixing scale L is proposed to characterize the micromixing performance of microdevices.(1)It is defined to be the smallest scale within which homogenization is only realized by molecular diffusio
Micropacked bed reactors are a useful tool for multiphase chemical reaction studies and kinetic analysis,since they can offer better heat management and higher mass transfer rates than conventional pa
Gas-liquid-liquid systems are widely encountered in various reaction systems with biphasic catalysis,such as hydrogenation,hydroformylation and carbonylation.These systems usually require large surfac
The generation for water droplets wrapped by ionic liquid([BMIM][PF6])were investigated in a flow-focusing device by using a high-speed digital camera.Experiments were carried out in a square microcha
A special system of concentrated sulfuric acid(H2SO4)and n-hexane was used to study the droplet formation in a glass T-junction microchannel with H2SO4 as the continuous phase.The effects of capillary
Microfluidic system has a wide range of applications,especially in chemical industry,biomedicine and biological industry.The mixing process in microfluidic system is very important.How to achieve a ra