Gas–liquid mass transfer in a falling film microreactor: Effect of reactor orientation on liquid-side mass transfer coefficient

Lokhat, David; Domah, Ashveer Krishen.; Padayachee, Kuveshan.; Baboolal, Aman; Ramjugernath, Deresh

doi:10.1016/j.ces.2016.08.002

Cited by 33 publications

(15 citation statements)

References 13 publications

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“…Microreactors Lokhat et al [119] defined microreactors as "reactors with reaction channels of the order of micrometers, at which diffusion is the dominant mixing mechanism rather than turbulent eddies." The small size nature of microreactor operating in continuous regime have made it promising in intensification of thermally driven [120] and photocatalytic reactions [121], among other applications.…”

Section: Photocatalytic Reactorsmentioning

confidence: 99%

Process intensification technologies for CO2 capture and conversion – a review

2020

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With the concentration of CO 2 in the atmosphere increasing beyond sustainable limits, much research is currently focused on developing solutions to mitigate this problem. Possible strategies involve sequestering the emitted CO 2 for long-term storage deep underground, and conversion of CO 2 into value-added products. Conventional processes for each of these solutions often have high-capital costs associated and kinetic limitations in different process steps. Additionally, CO 2 is thermodynamically a very stable molecule and difficult to activate. Despite such challenges, a number of methods for CO 2 capture and conversion have been investigated including absorption, photocatalysis, electrochemical and thermochemical methods. Conventional technologies employed in these processes often suffer from low selectivity and conversion, and lack energy efficiency. Therefore, suitable process intensification techniques based on equipment, material and process development strategies can play a key role at enabling the deployment of these processes. In this review paper, the cutting-edge intensification technologies being applied in CO 2 capture and conversion are reported and discussed, with the main focus on the chemical conversion methods.

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Section: Photocatalytic Reactorsmentioning

confidence: 99%

Process intensification technologies for CO2 capture and conversion – a review

2020

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“…Authors [6] note the main variables that affect the process of sulfation in a tubular device with a downward flow of phases: molar ratio of the reagents, concentration of sulfur trioxide in the gas air stream, temperature of the fluid stream, length of the reaction tube. The analysis of the process of mass exchange in the micro reactor with the falling film is conducted [7]. Thus, it may be stated that such an apparatus-technological design is currently the most promising one for the use under industrial conditions.…”

Section: приведены результаты исследований процесса сульфатирования сmentioning

confidence: 99%

Regularities of the process of sulfation of the mixtures of organic substances

Dzevochko

Podustov

2016

EEJET

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“…Consequently, reaction rates are enhanced and gas-liquid mass transfer can be intensified applying continuous flow reactors [7]. Gas-liquid reactions in microreactors therefore have been subject to a variety of academic studies regarding hydrodynamics and mass transfer [10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Gas-liquid mass transfer intensification for bubble generation and breakup in micronozzles

et al. 2021

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The local gas-liquid mass transfer was characterized during bubble generation in T-contactors and in an adjacent micronozzle. A colorimetric technique with the oxygen sensitive dye resazurin was investigated to visualize gas-liquid mass transfer during slug flow, bubble deformation, as well as laminar and turbulent bubble breakup in the wake of a micronozzle. Two optimized nozzle geometries from previous studies were evaluated concerning volumetric mass transfer coefficients for low pressure loss, narrow residence time distribution, or high dispersion rates. Highest values in kla up to 60 s−1 were found for turbulent bubble breakup and an optimized micronozzle design in respect to pressure drop and dispersion rate. The achieved mass transfer coefficients were correlated with the energy dissipation rate within the micronozzles and with the inverse Kolmogorov time scale in vortex dissipation in good agreement for laminar and turbulent breakup regimes. Graphical abstract

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Gas–liquid mass transfer in a falling film microreactor: Effect of reactor orientation on liquid-side mass transfer coefficient

Cited by 33 publications

References 13 publications

Process intensification technologies for CO2 capture and conversion – a review

Process intensification technologies for CO2 capture and conversion – a review

Regularities of the process of sulfation of the mixtures of organic substances

Gas-liquid mass transfer intensification for bubble generation and breakup in micronozzles

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