Aqueous piperazine derivatives for CO2 capture: Accurate screening by a wetted wall column

Chen, Xi; Rochelle, Gary T.

doi:10.1016/j.cherd.2011.04.002

Cited by 94 publications

(71 citation statements)

References 26 publications

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“…It is said that typical power plant designs with MEA will reduce power plant output by 25-35 % (Chen and Rochelle 2011). Because most of the energy is used in the stripper, it is important to reduce the required amount for this piece of equipment.…”

Section: Process Energy Demandmentioning

confidence: 99%

Demonstration of a post-combustion carbon capture pilot plant using amine-based solvents at the Łaziska Power Plant in Poland

Stec

Tatarczuk

Więcław‐Solny

et al. 2015

Clean Techn Environ Policy

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As a part of the strategic research program ''Advanced technologies for energy generation: Development of a technology for highly efficient zero-emission coal-fired power units integrated with CO 2 capture'', a mobile CO 2 absorption pilot plant was erected. The main purpose of the pilot plant was to demonstrate the postcombustion technology in conjunction with a coal-fired power plant. The pilot plant captured CO 2 by chemical absorption in amine-based solvents, which was considered to be the best adapted technology to the requirements of coal-fired power plants and suitable for retrofitting to existing units. The pilot plant captured up to 1000 kg/day of CO 2 from the power plant's flue gases with CO 2 recovery exceeding 90 %. The flexible process flowsheet of the pilot plant offered high potential for the validation of various improvements, which were designed to reduce the process energy demand and to increase the CO 2 recovery. This paper summarizes the initial operation experience at the TAURON Łaziska Power Plant in Poland. Selected first results obtained are presented and discussed. The initial campaigns utilized 20 and 30 wt% monoethanolamine (MEA) solutions recognized as baseline solvents that were suitable for comparative purposes. The initial campaigns at the pilot plant successfully demonstrated reliable operation and promising results.

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Section: Process Energy Demandmentioning

confidence: 99%

Demonstration of a post-combustion carbon capture pilot plant using amine-based solvents at the Łaziska Power Plant in Poland

Stec

Tatarczuk

Więcław‐Solny

et al. 2015

Clean Techn Environ Policy

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“…In this temperature range, the rate for the blend stays relatively constant, approximately equal to that for 8 m PZ and over 2.5 times faster than 7 m MEA. Temperature above 60°C leads to a decrease in the mass transfer rate of the blend, as has been observed for other amine systems [24][25][26]. The blend performed as well as concentrated PZ and represents another solvent that can outperform the baseline MEA solvent.…”

Section: Co 2 Absorption Ratementioning

confidence: 61%

“…The blend and 8 m PZ have approximately double the CO 2 capacity as MEA, an important advantage. The average k' g , k' g avg , based on a log-mean flux and log-mean driving force across a typical absorber design, as described in detail previously, is compared at 40°C [26]. Both PZ and the blend have k g ' avg values double that of MEA.…”

Section: Overall Comparison Of Blendsmentioning

confidence: 99%

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Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture

Freeman

Chen

Nguyen

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Me´lange pipe´razine/N-me´thylpipe´razine/N,N'-dime´thylpipe´razine en solution aqueuse pour le captage du CO 2 -Un me´lange pipe´razine (PZ), N-me´thylpipe´razine (MPZ) et N,N'-dime´thylpipe´razine (DMPZ) en solution aqueuse est de´crit pour le captage du CO 2 par absorption-re´ge´ne´ration. Par rapport a`la pipe´razine concentre´e, ce me´lange permet un gain sur la solubilite´des produits solides et sur la chaleur d'absorption. Aucune insolubilite´n'a e´teó bserve´e a`fort taux de charge en CO 2 contrairement aux solvants a`base de pipe´razine. Ce me´lange a montre´des performances e´quivalentes a`la pipe´razine concentre´e en termes de capacite´et de cine´tique d'absorption du CO 2 , qui sont plus que double´es par rapport a`la traditionnelle MonoEthanolAmine (MEA) a`7 M (30 % massique). Un e´quilibre s'est e´tabli entre les trois constituants qui augmente la stabilite´thermique en comparaison des me´langes traditionnels de solvants. Le principal inconve´nient de ce nouveau syste`me est une volatiliteṕ lus importante des amines dans les conditions de l'absorbeur en comparaison avec le cas de la pipe´razine concentre´e et de la MEA.Abstract -Piperazine/N-methylpiperazine/N,N'-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture -A blend of piperazine (PZ), N-methylpiperazine (MPZ) and N,N'-dimethylpiperazine (DMPZ) is described as a novel CO 2 capture solvent for aqueous absorption-stripping. This blend provides improved solid solubility and heat of absorption compared to concentrated PZ. No insolubility was observed for regions of high CO 2 loading, unlike PZ solvents. The blend performed like concentrated PZ in terms of CO 2 capacity and CO 2 absorption rate, both of which were more than double that of a traditional 7 molal (30 wt%) MonoEthanolAmine (MEA). Thermal equilibrium was established between the three constituent amines that increases the thermal stability compared to traditional blended solvents. The primary drawback of this novel solvent system is enhanced amine volatility at absorber conditions compared with both concentrated PZ and MEA.

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“…Therefore, alternative aqueous amine solutions, which could be composed by several amines dissolved in water, have to be tested and compared in order to identify the best ones, which combine a fast reaction rate with the CO 2 , a high absorption capacity, a high stability and a low energetic regeneration cost. Recent experimental works (Chen and Rochelle, 2011;Cullinane and Rochelle, 2006;Khalili et al, 2009) have shown that aqueous solution of piperazine derivatives are very promising to replace the aqueous solutions of MEA in CO 2 capture processes.…”

Section: Introductionmentioning

confidence: 99%

CO2 absorption in aqueous solutions of N-(2-hydroxyethyl)piperazine: Experimental characterization using interferometry and modeling

Wylock

Dehaeck

Quintans

et al. 2013

Chemical Engineering Science

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This work deals with the experimental characterization of carbon dioxide (CO 2 ) absorption in an aqueous solution of N-(2-hydroxyethyl)piperazine, by using of digital holographic interferometry. This method enables visualizing the phenomena taking place in the vicinity of the gas-liquid interface.Thanks to a calibration, the obtained results yield the time evolution of the CO 2 loading field in the aqueous solution and the gas-liquid absorption rate for various operating conditions. The processing method and the obtained results are detailed. A phenomenological model, highlighting the limiting steps of the gas-liquid CO 2 absorption, is proposed. A set of experiments is realized and the parameters of this model are estimated for various initial amine concentrations and initial loadings. The results are discussed and correlations are proposed for the model parameters.

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Aqueous piperazine derivatives for CO2 capture: Accurate screening by a wetted wall column

Cited by 94 publications

References 26 publications

Demonstration of a post-combustion carbon capture pilot plant using amine-based solvents at the Łaziska Power Plant in Poland

Demonstration of a post-combustion carbon capture pilot plant using amine-based solvents at the Łaziska Power Plant in Poland

Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide Capture

CO2 absorption in aqueous solutions of N-(2-hydroxyethyl)piperazine: Experimental characterization using interferometry and modeling

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