Removal of carbon dioxide by absorption in mixed amines: modelling of absorption in aqueous MDEA/MEA and AMP/MEA solutions

Mandal, Bishnupada; Guha, Maya; Biswas, Asok; Bandyopadhyay, Syamalendu S.

doi:10.1016/s0009-2509(01)00279-2

Cited by 184 publications

(122 citation statements)

References 15 publications

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“…3 The most common solvent used is aqueous monoethanolamine, a primary amine, which is reactive and inexpensive. 4 Studies have been conducted using a mixture of methyldiethanolamine, a tertiary amine, and monoethanolamine as the solvent. The mixed amine solvent combines the high reaction rate of the primary amine with the high equilibrium loading capacity of the tertiary amine.…”

Section: Carbon Dioxide Flue Gas Separationmentioning

confidence: 99%

“…The mixed amine solvent combines the high reaction rate of the primary amine with the high equilibrium loading capacity of the tertiary amine. 4 Ammonia has been evaluated as an alternative solvent. Ammonia has a higher equilibrium loading capacity than monoethanolamine and the energy requirement for regenerating ammonia is lower than for monoethanolamine.…”

Section: Carbon Dioxide Flue Gas Separationmentioning

confidence: 99%

See 1 more Smart Citation

Recovery and Sequestration of Co2 From Stationary Combustion Systems by Photosynthesis of Microalgae

Nakamura¹,

Olaizola²,

Masutani³

2002

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Section: Carbon Dioxide Flue Gas Separationmentioning

confidence: 99%

Section: Carbon Dioxide Flue Gas Separationmentioning

confidence: 99%

Recovery and Sequestration of Co2 From Stationary Combustion Systems by Photosynthesis of Microalgae

Nakamura¹,

Olaizola²,

Masutani³

2002

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“…Postcombustion CO 2 capture from fossil fuel power plants using amine-based solvents such as monoethanolamine (MEA) and methyldiethanolamine (MDEA) is one of the most promising technologies for the abatement of CO 2 gas. Monoethanolamine (MEA) or diethanolamine (DEA) has been proposed by several researchers 1,2,3 . Aqueous solutions of monoethanolamine (MEA), a primary alkanolamine, have been extensively studied due to fast reaction rate, low solvent cost and ease of reclamation.…”

Section: Introductionmentioning

confidence: 99%

“…The principle of such an aqueous blend with a tertiary amine is based on the relatively high rate of reaction of CO 2 with the reactive alkanolamine combined with the low heat of reaction of CO 2 with the tertiary alkanolamine, which leads to higher rates of absorption in the absorber column 10 . Blended MDEA/MEA solutions have been widely investigated for several years 2,11,12,13 . MDEA promoted piperazine (MDEA / PZ) has been used commercially and was patented by BASF to remove CO 2 in ammonia plants 14 .…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamic simulation of CO2 absorption into mixed aqueous solutions MDEA/PZ

Harun

Masiren

2017

Chem. Eng. Res. Bull.

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Abstract:The mixture of amine absorption process is an approach for mitigation of carbon dioxide (CO 2 ) from flue gas that produces from power plant. Several experimental and simulation studies have been undertaken to understand this process but the mechanism of CO 2 absorption into the aqueous blended amines such as MDEA/PZ is not well understood and available knowledge within the open literature is limited. The aim of this study is to investigate the intermolecular interaction of the blended MDEA/PZ using Molecular Dynamics (MD) simulation. MD simulation was run under condition 313 K and 1 atm. The thermodynamic ensemble used were 200 ps for NVE and 1 ns for NVT. The periodic boundary is used to visualize the interaction of molecules of the whole system. The simulation method also involved calculation of force field and time integration algorithm.The results were interpreted in terms of Radial Distribution Function (RDF) analysis. It was observed that the hydroxyl group (-OH) of MDEA is more attracted to water molecule compared to amino group (-NH) of MDEA. The intermolecular interaction probability of -OH and -NH group of MDEA with CO 2 in blended MDEA/PZ is higher than using pure MDEA. This finding shows that PZ molecule act as an activator to promote the intermolecular interaction between MDEA and CO 2 .Thus, blend of MDEA with PZ is expecting to increase the absorption rate of CO 2 and reduce the heat regeneration requirement.

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“…Currently, several primary CO 2 capture and recovery methods are available: absorption (including chemical absorption and physical absorption), adsorption, membrane separation, and cryogenic separation [3][4][5]. Among these methods, chemical absorption can separate large amounts of high purity CO 2 from low concentration flue gas, but high energy penalty and huge investments are expected [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

et al. 2014

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Abstract:In this study, an improved CO 2 separation and purification system is proposed based on in-depth analyses of cryogenic separation and distillation theory as well as the phase transition characteristics of gas mixtures containing CO 2 . Multi-stage compression, refrigeration, and separation are adopted to separate the majority of the CO 2 from the gas mixture with relatively low energy penalty and high purity. Subsequently, the separated crude liquid CO 2 is distilled under high pressure and near ambient temperature conditions so that low energy penalty purification is achieved. Simulation results indicate that the specific energy consumption for CO 2 capture is only 0.425 MJ/kgCO 2 with 99.9% CO 2 purity for the product. Techno-economic analysis shows that the total plant investment is relatively low. Given its technical maturity and great potential in large-scale production, compared to conventional MEA and Selexol TM absorption methods, the cost of CO 2 capture of the proposed system is reduced by 57.2% and 45.9%, respectively. The result of this study can serve as a novel approach to recovering CO 2 from high CO 2 concentration gas mixtures.

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Removal of carbon dioxide by absorption in mixed amines: modelling of absorption in aqueous MDEA/MEA and AMP/MEA solutions

Cited by 184 publications

References 15 publications

Recovery and Sequestration of Co2 From Stationary Combustion Systems by Photosynthesis of Microalgae

Recovery and Sequestration of Co2 From Stationary Combustion Systems by Photosynthesis of Microalgae

Molecular dynamic simulation of CO2 absorption into mixed aqueous solutions MDEA/PZ

An Improved CO2 Separation and Purification System Based on Cryogenic Separation and Distillation Theory

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