Solubility of Carbon Dioxide in Aqueous Solutions of <i>N</i>-Methyldiethanolamine and Piperazine in the Low Gas Loading Region

Speyer, Dirk; Ermatchkov, Viktor; Maurer, Gerd

doi:10.1021/je9003383

Cited by 47 publications

(34 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chemical absorption by aqueous solutions of amines such as N-Methyldiethanolamine (MDEA) solution is one of the most effective industrial methods for the removal of these acid gases from gaseous effluents (Speyer et al, 2012(Speyer et al, , 2009. Availability of accurate acid gas solubilities in the solvent is essential for any modeling of absorption processes.…”

Section: Introductionmentioning

confidence: 99%

Incorporating Pitzer equations in a new thermodynamic model for the prediction of acid gases solubility in aqueous alkanolamine solutions

Alhseinat¹,

Mota-Martinez²,

Peters³

et al. 2014

Journal of Natural Gas Science and Engineering

View full text Add to dashboard Cite

a b s t r a c tIn gas sweetening, acid gases such as CO 2 and/or H 2 S are usually removed by "chemical" absorption through aqueous amine solutions such as N-Methyldiethanolamine (MDEA) solution. Reliable prediction of equilibrium properties (vaporeliquid equilibrium and species distribution) is needed for a rigorous design of such absorption processes. Information on energy requirements can also be obtained from a reliable vaporeliquid equilibrium thermodynamic model. The currently used methods for correlating/ predicting the simultaneous solubility of H 2 S and CO 2 in aqueous MDEA solutions require accurate experimental solubility data of single and mixed gases which, in general, confine their applicability in the experimental region. The purpose of this paper is to develop a new theoretical thermodynamic model based on incorporating thermodynamic relationships that correlates the equilibrium and solubility constants to the Gibbs free energy of reaction, leading to an enhanced predictive capability of the model. In this work the Pitzer model is used to account for activity and specific ion interactive forces. This will allow taking into account the effect of the presence of all cations and anions such as thermally stable salts, dissolved organic species and amine degradation products that are usually encountered in absorption units. The suggested model has been verified through comparison with literature data for CO 2 and H 2 S absorption. The presented model can be a very powerful tool that could be of significant importance in the design of amine absorption processes as well as in simulations of the operating variables for optimization of gas sweetening systems.

show abstract

Section: Introductionmentioning

confidence: 99%

Incorporating Pitzer equations in a new thermodynamic model for the prediction of acid gases solubility in aqueous alkanolamine solutions

Alhseinat¹,

Mota-Martinez²,

Peters³

et al. 2014

Journal of Natural Gas Science and Engineering

View full text Add to dashboard Cite

show abstract

“…To avoid the weird or disastrous climate change, how to reduce CO 2 emission without closing the large industrial emission sources, such as power plants and steels, has become a prominent global issue of the early 21st century [2,3]. Currently, aqueous alkanolamine processes, including monoethanolamine (MEA), N-methyl-diethanolamine (MDEA), diethanolamine (DEA) and trithanolamine (TEA), are the most commercially available technology to capture CO 2 from the flue gases emitted from the above plants [4][5][6][7][8]. However, the conventional aqueous alkanolamine technologies are deemed to be energy-intensive, expensive, corrosive and unacceptable for large-scale CO 2 capture [9].…”

Section: Introductionmentioning

confidence: 99%

“…In light of this, we focused on the synthesis of new types of ionic liquids to efficiently capture CO 2 , which could be competitive with common organic solvents and water in price. A series of alkanolamines-based ILs, monoethanolammonium tetrafluoroborate ( 4 ], piperazine (PZ) and a small amount of water for CO 2 capture. We have investigated the CO 2 capture performances at varied temperatures and pressures and the corrosion property of the above ILs-based composite solution.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A novel ionic liquids-based scrubbing process for efficient CO2 capture

Zhang

Zhao

et al. 2010

Sci. China Chem.

View full text Add to dashboard Cite

A novel alkanolamine-based ionic liquid, N-methyl-diethanolammonium tetrafluoroborate ([MDEA][BF 4 ]), was synthesized in our laboratory. The ionic liquid-based composite solution consisting of N-methyl-diethanolamine (MDEA), [MDEA] [BF 4 ], piperazine (PZ) and H 2 O was investigated for CO 2 capture. The optimal performance for CO 2 capture was found at 45 °C, 1.50 MPa, probably due to a synergistic action of the reaction and the transport. No apparent corrosion was found on stainless and carbon steel with the above composite solution. This finding is very significant to the promotion of its engineering application. carbon dioxide capture, ionic liquids, corrosion, molecular simulation

show abstract

“…MDEA activated by PZ was proven as a promising solvent for CO 2 absorption and has been investigated by many researchers [9]- [13]. However, the presence of acid gases (CO 2 and H 2 S) in any alkanolamine solutions during absorption process leads to the corrosion problem.…”

mentioning

confidence: 99%

Methyldiethanolamine and Piperazine as Extractant in Emulsion Liquid Membrane for Carbon Dioxide Removal

Kamarudin¹,

Dolmat²,

Najib³

2015

IJCEA

View full text Add to dashboard Cite

Abstract-Emulsion liquid membrane was formulated using MDEA and piperazine as extractant in sodium hydroxide solution. Span-80 in the organic solution acts as surfactant to stabilize the formation emulsion. The effects of MDEA/PZ ratio on emulsion stability and CO 2 absorption were investigated. CO 2 absorption was carried out in rotating disc contactor (RDC) column and gas chromatography (GC) was used to determine the amount of CO 2 leaving the column. This study showed that 8% v/v Span-80 has produced a stable emulsion. The emulsion was able to remove 60.3% of CO 2 . In the presence of methane (CH4), 54.1% of CO 2 and 13.2% of CH4 were removed from CH 4 /CO 2 mixtures. The finding demonstrates the promising technique of ELM for CO 2 removal.

show abstract

Solubility of Carbon Dioxide in Aqueous Solutions of N-Methyldiethanolamine and Piperazine in the Low Gas Loading Region

Cited by 47 publications

References 21 publications

Incorporating Pitzer equations in a new thermodynamic model for the prediction of acid gases solubility in aqueous alkanolamine solutions

Incorporating Pitzer equations in a new thermodynamic model for the prediction of acid gases solubility in aqueous alkanolamine solutions

A novel ionic liquids-based scrubbing process for efficient CO2 capture

Methyldiethanolamine and Piperazine as Extractant in Emulsion Liquid Membrane for Carbon Dioxide Removal

Contact Info

Product

Resources

About