Experimental investigation on the effect of addition of amine activators to aqueous solutions of N-methyldiethanolamine on the rate of carbon dioxide absorption

Zoghi, Ali T.; Feyzi, Farzaneh; Zarrinpashneh, Saeed

doi:10.1016/j.ijggc.2011.12.001

Cited by 70 publications

(32 citation statements)

References 21 publications

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“…[30][31][32] The rapid solvent screening method has been shown to be a valid way to overcome these challenges and select the most promising absorbents before further investigation. In previous rapid solvent screening work, [33][34][35][36][37] the performance of tested absorbents was evaluated by studying the difference of equilibrium-based CO 2 loading in the absorption and desorption process with the initial CO 2 loading of zero. However, in real industrial plants, the time for absorption is too short to achieve the equilibrium solubility of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO₂ capture

Zou

Gao

Wu³

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: The addition of a physical solvent to a traditional chemical absorbent has been shown to improve the absorption and desorption performance of the absorbent system. This type of novel absorbent system combining a single physical solvent with an amine solvent is a promising development in the industrial application of CO 2 capture. RESULTS: Hybrid solutions composed of Monoethanolamine (MEA), a physical solvent, and H 2 O were comprehensively investigated using the rapid solvent screening apparatus and a VLE apparatus. The results show that 30 wt% MEA with 20 wt% Sulfolane and 50 wt% H 2 O achieved higher rich loading, strong cyclic CO 2 capacity and the highest desorption rate over a wide range of CO 2 loadings. Also, the mass transfer performance of CO 2 absorption into the 30 wt% MEA and 20 wt% Sulfolane solution was investigated in a lab-scale random packing column. The effects of liquid flow rate, liquid feed temperature, lean CO 2 loading, inert gas flow rate and CO 2 partial pressure on the mass transfer performance were evaluated in terms of volumetric overall mass transfer coefficient (K G a v ). Furthermore, a correlation was developed for CO 2 absorption into MEA/Sulfolane solution in a random packing column using semi-empirical models as functions.CONCLUSION: Unlike for amine solution alone, inert gas flow rate is an indispensable operating parameter in the MEA/Sulfolane system. A mass transfer correlation model was established and holds significance in studying the kinetics of CO 2 absorption by a mixture of physical and chemical solvents and for the optimal design of Dixon-ring random packing columns. Industry ratus shown in Fig. 1. From the beginning of this experiment, a water saturation chamber and a reactor loaded with 15 mL hybrid solution were put into the water bath with the temperature kept at 313.15 K. Then a gas blend of CO 2 and N 2 with CO 2 partial pressure J Chem Technol Biotechnol 2020; 95: 649-664

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Section: Introductionmentioning

confidence: 99%

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO₂ capture

Zou

Gao

Wu³

et al. 2019

J of Chemical Tech & Biotech

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“…Therefore, the energy required for the regeneration of these amines is low, which allows to minimize the cost of the capture process. Several studies have shown that the mixture of primary and tertiary amines combines the high absorption capacity of tertiary amines with the high reactivity of primary and secondary amines (Paul et al, 2009;Zoghi et al, 2012;Toro-Molina and Bouallou, 2013). The regeneration costs of mixtures can be reduced compared to those of MEA or DEA.…”

Section: Introductionmentioning

confidence: 99%

Kinetics study and simulation of CO₂ absorption into mixed aqueous solutions of methyldiethanolamine and hexylamine

Mehassouel¹,

Derriche²,

Bouallou³

2018

Oil & Gas Science and Technology - Rev. IFP Energies nouvel

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This study investigated kinetics of CO2 absorption into mixed methyldiethanolamine (MDEA) and hexylamine (HA) solutions in a Lewis cell reactor. The experiments were conducted in the temperatures 298, 313 and 333 K with mass concentrations MDEA 37 wt.% + HA 3 wt.%, MDEA 35 wt.% + HA 5 wt.% and MDEA 33 wt.% + HA 7 wt.%. Our results showed that adding a small amount of hexylamine enhances the kinetics of CO2 absorption and that the kinetics of CO2 absorption with aqueous MDEA 37 wt.% + HA 3 wt.% is pseudo first order regime with reduced activation energy compared to that of MDEA 40 wt.%. The absorption/regeneration system was simulated using Aspen plus™ software for the treatment of gas streams from cement plant in a post-combustion process. The analysis of our results established that blended solvent MDEA 37 wt.% + HA 3 wt.% gives lower energy consumption than that of MDEA 40 wt.%.

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“…Chemical candidates should have high selectivity, reaction rate and absorption loading with respect to CO 2 , low energy consumption, high thermal stability and low corrosivity and environmental impact . Among the different types of amines, monoethanolamine (MEA) and N‐methyldiethanolamine (MDEA) have been used extensively for CO 2 capture . It is well known that MEA has high reactivity with CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Highly efficient carbon dioxide capture by a novel amine solvent containing multiple amino groups

Cao

Dong

Zhang

et al. 2015

J of Chemical Tech & Biotech

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BACKGROUND Aqueous solutions of amine are considered to be effective absorbents for CO2 capture. Special attention is increasingly being given to developing efficient solvents with both high absorption rate and absorption loading for CO2 capture. RESULTS A novel amine 2‐[(3‐aminopropyl)methylamino]ethanol (HMPDA) containing a primary amino group and a tertiary amino group was screened to improve the CO2 absorption performance. The equilibrium loading of CO2 in aqueous HMPDA solution was found to be 1.65 mol CO2 mol−1 HMPDA at 313 K and 1 MPa, which is larger than those of conventional amines like monoethanolamine (MEA, 0.75 mol CO2 mol−1 MEA) and N‐methyldiethanolamine (MDEA, 1.05 mol CO2 mol−1 MDEA) at 313 K and 1 MPa. Moreover, the HMPDA solution demonstrated a faster absorption rate of CO2 than those of MEA and MDEA solutions. The viscosity of HMPDA solution increases by around 66% after CO2 absorption, which is smaller than the 88% increase of MEA solution. CONCLUSIONS Efficient results for CO2 absorption using HMPDA were obtained through assessing the absorption rate, absorption loading of CO2 and related physical properties. This novel amine shows both fast absorption rate and high absorption loading due to the multiple‐site reaction elaborated by the zwitterion and single‐step termolecular mechanism. © 2015 Society of Chemical Industry

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Experimental investigation on the effect of addition of amine activators to aqueous solutions of N-methyldiethanolamine on the rate of carbon dioxide absorption

Cited by 70 publications

References 21 publications

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO₂ capture

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO₂ capture

Kinetics study and simulation of CO₂ absorption into mixed aqueous solutions of methyldiethanolamine and hexylamine

Highly efficient carbon dioxide capture by a novel amine solvent containing multiple amino groups

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Experimental investigation on the effect of addition of amine activators to aqueous solutions of N-methyldiethanolamine on the rate of carbon dioxide absorption

Cited by 70 publications

References 21 publications

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO2 capture

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO2 capture

Kinetics study and simulation of CO2 absorption into mixed aqueous solutions of methyldiethanolamine and hexylamine

Highly efficient carbon dioxide capture by a novel amine solvent containing multiple amino groups

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Product

Resources

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Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO₂ capture

Fast screening of amine/physical solvent systems and mass transfer studies on efficient aqueous hybrid MEA/Sulfolane solution for postcombustion CO₂ capture

Kinetics study and simulation of CO₂ absorption into mixed aqueous solutions of methyldiethanolamine and hexylamine