Vapour liquid equilibria of carbon dioxide in dilute and concentrated aqueous solutions of piperazine at low to high pressure

Dash, Sukanta Kumar; Samanta, Arunkumar; Samanta, Amar Nath; Bandyopadhyay, Syamalendu S.

doi:10.1016/j.fluid.2010.11.004

Cited by 70 publications

(49 citation statements)

References 26 publications

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“…In this work, the VLE of CO 2 in PZ activated aqueous AMP has been studied experimentally and theoretically at various temperatures, different relative compositions of AMP/PZ in the solution with the CO 2 partial pressure in the range of 0.1-1450 kPa. The ENRTL theory [22][23][24] has been used to develop the model for the ternary systems (CO 2 + PZ + H 2 O; CO 2 + AMP + H 2 O) [25,26] and quaternary system (CO 2 + AMP + PZ + H 2 O) to describe the equilibrium behaviour of the solvent considering the interactions of piperazine species in the liquid phase, such as piperazine carbamate, piperazine dicarbamate and protonated piperazine carbamate in the model. In this work, Aspen Plus ® software (V-7.1) [27] has been used for data regression and model validation.…”

Section: Nomenclaturementioning

confidence: 99%

“…A detail description of the experimental set up, procedure and validation of experimental procedure is presented by Dash et al [25]. A magnetic stirrer is used for liquid phase agitation in the equilibrium cell.…”

Section: Apparatusmentioning

confidence: 99%

“…The model development for the chemical and phase equilibria for the systems CO 2 + PZ + H 2 O and CO 2 + AMP + H 2 O has been discussed earlier by these authors [25,26]. The model for CO 2 + AMP + PZ + H 2 O is developed by considering the following reactions in aqueous phase:…”

Section: Chemical and Phase Equilibriamentioning

confidence: 99%

“…vator, such as piperazine (PZ) to aqueous alkanolamines, e.g., MEA, MDEA or AMP has been suggested for more efficient removal of CO 2 from industrial and from flue gas streams of coal fired power plants [3][4][5][6][7][8][9][10][11][12][13]. Piperazine is used as an activator in BASF activated MDEA technology [14].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

Dash

Samanta

Bandyopadhyay

2011

Fluid Phase Equilibria

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Section: Nomenclaturementioning

confidence: 99%

Section: Apparatusmentioning

confidence: 99%

Section: Chemical and Phase Equilibriamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

Dash

Samanta

Bandyopadhyay

2011

Fluid Phase Equilibria

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“…The Electrolyte-NRTL model (already implemented in ASPEN Plus ® ), developed by Chen and co-workers [12][13][14][15] and tested against experimental data [16,17] in a previous work [18], has been used for the representation of the thermodynamic behaviour of the system.…”

Section: Thermodynamic Modellingmentioning

confidence: 99%

The rate-based modelling of CO₂removal from the flue gases of power plants

Moioli

2014

Energy and Sustainability V

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Recently, global warming has become a topic of great interest, involving social, economic and industrial issues. Many efforts are being made in order to limit emissions of CO 2 , a powerful greenhouse gas, whose massive presence in the atmosphere is increasing more and more. Industrially the most commonly used process for CO 2 capture is absorption by alkanolamines, widely applied to the removal of exhaust gases from power plants. The design of the absorber is still difficult, due to the different phenomena involved. Commercially, several process simulators can be found, based on different assumptions, both for thermodynamics and for diffusion with reaction. Thermodynamics, kinetics and mass transfer greatly influence the chemical absorption process. Acid gases and amines are weak electrolytes, which partially dissociate in the aqueous phase: the high non-ideality of the liquid phase must be properly taken into account, usually with a / method. Kinetics and mass transfer can be described using two different approaches: the "equilibrium-based stage efficiency" or the "rate-based" one. This latter, if based on a proper mass transfer theory, can be used to correctly describe the phenomenon of diffusion with reaction occurring from the vapor phase to the liquid phase. This paper focuses on modelling the absorption of CO 2 by means of a piperazine solution, performed by properly modifying ASPEN Plus ® with a homemade subroutine linked to the simulator. Experimental data of a pilot plant for cleaning flue gases from power plants has been used to validate the model, which represents the absorption phenomenon well.

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Piperazine and methyldiethanolamine interrelationships in CO₂ absorption by aqueous amine mixtures. Part I: Saturation rates of single‐reagent solutions

et al. 2018

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Formulation of efficient absorbing solutions for carbon dioxide capture is essential to reduce the operation costs of industrial gas treatment plants.Recently, mixed amine systems, typically composed of a tertiary and a primary or secondary amine, have been a growing interest in academic and industrial research. In particular, the so-called activated methyldiethanolamine (aMDEA), which contains small amounts of piperazine (PZ), has become one of the most promising new candidates.This work intends to perform a comparison between the performance of single amines on the one hand and their blends on the other hand with the aim of elucidating how PZ and MDEA can interact in the latter situation. In the first part, aqueous solutions made up of a pure reagent (either MDEA or PZ) were studied. Rates of CO 2 transfer from a gas phase to unloaded and loaded solutions, up to nearly saturation points, were experimentally investigated for a wide range of operating conditions using a membrane contactor. Observed CO 2 transfer rates were reproduced with a simple yet effective model that captured the main physical and chemical aspects.

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Vapour liquid equilibria of carbon dioxide in dilute and concentrated aqueous solutions of piperazine at low to high pressure

Cited by 70 publications

References 26 publications

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

The rate-based modelling of CO₂removal from the flue gases of power plants

Piperazine and methyldiethanolamine interrelationships in CO₂ absorption by aqueous amine mixtures. Part I: Saturation rates of single‐reagent solutions

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Vapour liquid equilibria of carbon dioxide in dilute and concentrated aqueous solutions of piperazine at low to high pressure

Cited by 70 publications

References 26 publications

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

Solubility of carbon dioxide in aqueous solution of 2-amino-2-methyl-1-propanol and piperazine

The rate-based modelling of CO2removal from the flue gases of power plants

Piperazine and methyldiethanolamine interrelationships in CO2 absorption by aqueous amine mixtures. Part I: Saturation rates of single‐reagent solutions

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Product

Resources

About

The rate-based modelling of CO₂removal from the flue gases of power plants

Piperazine and methyldiethanolamine interrelationships in CO₂ absorption by aqueous amine mixtures. Part I: Saturation rates of single‐reagent solutions