Absorption of carbon dioxide into N-methyldiethanolamine in a high-throughput microchannel reactor

Pan, Mei-Yuan; Qian, Zhi; Shao, Lei; Arowo, Moses; Chen, Jianfeng; Wang, Jie‐Xin

doi:10.1016/j.seppur.2014.01.033

Cited by 35 publications

(6 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pan et al 110 investigated the mass transfer for the CO 2 absorption by using mixed amine composed of N-MDEA and piperazine (Scheme 3) in MTMCR. The ka and the absorption efficiency were raised to 1.70 s −1 and 97% at the feed gas and absorbent throughputs of 100 and 5.32 L/h, respectively.…”

Section: Mass Transfer Intensification Of Co 2 Absorption In Microrea...mentioning

confidence: 99%

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO₂ Absorption in Microreactors

Pasha

Liu

Zhang

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Process intensification for CO 2 absorption using microreactors has received growing interest from both academia and industry because of their great ability to overcome the mass transfer resistance across the phases boundaries, giving rise to significant improvement in process efficiency. Mass transfer is strongly linked with two-phase flow patterns of CO 2 -absorbent in microreactors and, subsequently, overall volumetric mass transfer coefficient (ka) intensification relies on hydrodynamics, microreactor structures and applied absorbents. Reviewed literature on this subject indicated that the Taylor flow pattern, spiral and meandering microreactor structures, and primary and secondary amines absorbents were preferred to use for the CO 2 absorption in microreactors. Moreover, ka models developed through offline and online characterizations were presented to analyze the contribution of liquid film and bubble caps in mass transfer. Economic analysis was executed to assess the operating feasibility of microreactors at industrial scale throughputs of feed gas and absorbent. The results indicated that the capital expenses of microreactors were significantly higher than those of conventional absorbers because of their extensive number of units and complex design of flow distribution network requirements with high throughputs. However, microreactors exhibited lower operating expenditures than conventional absorbers because of their excellent transport characteristics. Finally, the persisting challenges and remarking conclusions are presented relating to the implementation of microreactors for CO 2 absorption.

show abstract

Section: Mass Transfer Intensification Of Co 2 Absorption In Microrea...mentioning

confidence: 99%

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO₂ Absorption in Microreactors

Pasha

Liu

Zhang

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…MDEA is a tertiary amine known for selectivity toward absorption of H 2 S in the presence of CO 2 . ,,− Previous studies suggest that, using MDEA, it is possible to reach pipeline specifications for H 2 S in the sweet natural gas . Because MDEA has a relatively low vapor pressure, solution evaporation loss for this solvent is low and MDEA can be used in higher concentrations (in comparison to MEA). ,, MDEA concentrations between 20 and 60 wt % have been reported in previous studies. ,,, MDEA degrades harder and exhibits lower corrosion rates compared to primary alkanolamines .…”

Section: Overview Of the Processesmentioning

confidence: 99%

Influence of CO₂ Residual of Regenerated Amine on the Performance of Natural Gas Sweetening Processes Using Alkanolamine Solutions

et al. 2016

View full text Add to dashboard Cite

In this research, three suitable alkanolamine solutions are selected for sweetening a natural gas with high H2S content and low CO2/H2S ratio. For each process, six different CO2 fractions in the regenerated solution are selected. On the basis of each CO2 fraction in the regenerated solution, the three processes are designed and simulated using the Aspen HYSYS process simulator to rich pipeline specifications (i.e., H2S content lower than 4 ppm and CO2 content lower than 2 mol %) for the sweet gas. The results of simulation are then economically evaluated using Aspen Economic Evaluation software. The results of simulation and economic evaluation indicate that the diglycolamine (DGA) process is more economical compared to monoethanolamine (MEA) and mixed methyldiethanolamine (MDEA) + MEA processes. Also, it is concluded that there are several advantages in operating the alkanolamine sweetening processes at higher CO2 fractions of the regenerated amine. On the basis of the results of this study, lower total capital costs, lower annual operating costs, and lower energy requirements for regeneration of the solution are obtainable by operating the alkanolamine sweetening processes at higher fractions of CO2 in the regenerated solution.

show abstract

“…A promising attempt to intensify the transport of mass and energy in process equipment is to integrate miniaturized structures inside. In such apparatus, several unit operations have been successfully realized, such as heat exchange, evaporation, condensation, − and chemical and biocatalytic reactions. ,− This list continues with ionic liquids as reaction media, extractions, , and absorption processes. − Concentrating on chemical transformations, apparatus on a micro- or a milli-scale may be operated at harsh conditions, which may open up so-called novel process windows and enable the establishment of continuous production processes. The processing in so-called flow chemistry devices can be significantly more efficient than the processing in conventional batch reactors. ,− Although several commercial concepts are available and have been tested successfully, current research, especially in the field of multiphase reaction engineering, is still aiming to reach a detailed understanding of the complex interactions between kinetics, flow behavior, and heat and mass transfer in such apparatus.…”

Section: Introductionmentioning

confidence: 99%

Gas–Liquid Flow Regime Prediction in Minichannels: A Dimensionless, Universally Applicable Approach

Haase

Bauer

Graf

2020

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Apparatus containing micro-or minichannels are seen as promising tools to intensify several chemical engineering processes. For gas−liquid systems, the apparatus should operate in the Taylor flow regime due to its excellent mass transfer coefficients and low back-mixing. The presence of the regime depends on several geometric and operational parameters as well as material properties. To the best knowledge of the authors, the available information stored in flow maps for specific conditions has never been generalized. This work presents novel decision trees that enable the boundaries of Taylor flow in minichannels to be predicted, which are based on the data of 97 different flow maps covering a broad range of configurations. The developed criteria are mathematical functions that describe the transitions from Taylor to bubbly flow, Taylor−annular flow, or churn flow. These functions involve 7 dimensionless groups, namely u G,s /u L,s , μ G /μ L , ρ G /ρ L , Re L , We L , Θ*, and, a channel form factor, R A .

show abstract

Absorption of carbon dioxide into N-methyldiethanolamine in a high-throughput microchannel reactor

Cited by 35 publications

References 44 publications

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO₂ Absorption in Microreactors

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO₂ Absorption in Microreactors

Influence of CO₂ Residual of Regenerated Amine on the Performance of Natural Gas Sweetening Processes Using Alkanolamine Solutions

Gas–Liquid Flow Regime Prediction in Minichannels: A Dimensionless, Universally Applicable Approach

Contact Info

Product

Resources

About

Absorption of carbon dioxide into N-methyldiethanolamine in a high-throughput microchannel reactor

Cited by 35 publications

References 44 publications

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO2 Absorption in Microreactors

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO2 Absorption in Microreactors

Influence of CO2 Residual of Regenerated Amine on the Performance of Natural Gas Sweetening Processes Using Alkanolamine Solutions

Gas–Liquid Flow Regime Prediction in Minichannels: A Dimensionless, Universally Applicable Approach

Contact Info

Product

Resources

About

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO₂ Absorption in Microreactors

Recent Advancements on Hydrodynamics and Mass Transfer Characteristics for CO₂ Absorption in Microreactors

Influence of CO₂ Residual of Regenerated Amine on the Performance of Natural Gas Sweetening Processes Using Alkanolamine Solutions