Amine blends using concentrated piperazine

Li, Le; Voice, Alexander K.; Li, Han; Namjoshi, Omkar; Nguyen, Tien V.; Du, Yongling; Rochelle, Gary T.

doi:10.1016/j.egypro.2013.05.121

Cited by 84 publications

(42 citation statements)

References 13 publications

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“…It has been considered in blends with other compounds or alone [12,13]. However, piperazine presents limited solubility, which motivates its use in blends with other amines or keeping the CO 2 loading in the range of 0.26-0.42 mol-CO 2 /mol alkalinity above 20°C [29]. Nevertheless, the stability of piperazine may condition its use outside a specific range of operating conditions.…”

Section: Alternative Solvents For Co 2 Capturementioning

confidence: 99%

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

2016

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a b s t r a c t a r t i c l e i n f o Available online xxxx Keywords: CO 2 absorption MEA Amines Global demand Alternative solvents Alternative technologiesRecent research on CO 2 capture is focusing on the optimization of CO 2 absorption using amines (mainly monoethanolamine-MEA) in order to minimize the energy consumption of this very energy-intensive process and improve the absorption efficiency. Process optimization is always required and this research is worth and necessary. However, the main concern arises when thinking of the overall process: solvent production, solvent use and regeneration, and environmental effects related to its use/emissions. The production of MEA from ammonia involves important CO 2 emissions during the Haber-Bosch process. The regeneration of the solvent after the absorption is also an indirect source of CO 2 related to the use of fuels (i.e., combustion processes for energy supply). Thus, the evaluation of the overall balance of CO 2 emitted and captured is essential to determine the efficiency of the process. In addition, other environmental impacts associated to the toxicity and environmental fate of the solvent have to be considered. The use of MEA and other amines in CO 2 capture is a point of concern and a global application does not seem to be the best strategy. This review aims at giving an overview of the main implications of using MEA as absorption solvent for CO 2 capture together with the last advances in research to improve the conventional absorption process. Furthermore, alternatives of using other solvents and/or using other technology and their advantages and weak points will be briefly provided. An approach oriented to produce CO 2 -based products with economic value that can be reintegrated in a closed carbon loop, reducing the use of fresh materials and decreasing the production cost, should be the final objective of current research on CO 2 capture.

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Section: Alternative Solvents For Co 2 Capturementioning

confidence: 99%

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

2016

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“…Rochelle's group at the University of Texas at Austin claimed that concentrated piperazine (PZ) has a significant advantage over MEA in consideration to the reaction rate, volatility, and degradation [6,7]. They focused on solving the solids-solubility problem of concentrated PZ [6] by adding additives [8] or varying the substituent group on PZ molecular [9]. The screening results, although not preferred in Chen and Rochelle's paper [9], show that 1-methylpiperazine (1MPZ) has lower heat-of-CO 2 absorption than, a similar absorption rate to, and higher cyclic capacity than PZ.…”

Section: Introductionmentioning

confidence: 99%

CO2 solubility measurement and thermodynamic modeling for 1-methylpiperazine/water/CO2

Moullec²,

Lu³

et al. 2015

Fluid Phase Equilibria

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“…A number of new amines and their blends have been examined under different conditions to recognize a stable solvent system with promising CO 2 capture properties (Hilliard, 2008;Idem et al, 2005;. PZ and its blends have been found as effective and stable amine solvents as that of alkanolamines and others Freeman, 2011;Freeman andRochelle, 2011, 2012b;Li et al, 2013b;Rochelle et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…However, at present it is established that PZ alone can be used as an alternative to MEA due its favorable CO 2 capture properties and thermal and oxidative degradation resistance (Freeman et al, 2009(Freeman et al, , 2010a. PZ has exhibited thermal stability up to 150 • C and oxidation stability in the presence of O 2 , CO 2 , and metal ions, like Fe 2+ , Cr 3+ , and Cu 2+ (Alawode, 2005;Li et al, 2013b;Freeman, 2011;Freeman et al, 2009). In addition, PZ has also possess favorable thermodynamic properties, such as CO 2 solubility, volatility, and heat capacity Dugas and Rochelle, 2009;Ermatchkov and Maurer, 2011;Freeman et al, 2009;Li et al, 2013b).…”

Section: Introductionmentioning

confidence: 99%

“…PZ has exhibited thermal stability up to 150 • C and oxidation stability in the presence of O 2 , CO 2 , and metal ions, like Fe 2+ , Cr 3+ , and Cu 2+ (Alawode, 2005;Li et al, 2013b;Freeman, 2011;Freeman et al, 2009). In addition, PZ has also possess favorable thermodynamic properties, such as CO 2 solubility, volatility, and heat capacity Dugas and Rochelle, 2009;Ermatchkov and Maurer, 2011;Freeman et al, 2009;Li et al, 2013b). 8 molal (m) PZ (40 wt.% PZ) has exhibited comparatively better results than 7 m MEA (30 wt.% MEA) for CO 2 capture (Freeman et al, 2009;Li et al, 2013b).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Degradation study of piperazine, its blends and structural analogs for CO2 capture: A review

Mazari

Ali

Jan

et al. 2014

International Journal of Greenhouse Gas Control

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Amine blends using concentrated piperazine

Cited by 84 publications

References 13 publications

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

Use of monoethanolamine (MEA) for CO 2 capture in a global scenario: Consequences and alternatives

CO2 solubility measurement and thermodynamic modeling for 1-methylpiperazine/water/CO2

Degradation study of piperazine, its blends and structural analogs for CO2 capture: A review

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