Membrane processes for carbon capture from coal-fired power plant flue gas: A modeling and cost study

Ramasubramanian, Kartik; Verweij, H.; Ho, W.S. Winston

doi:10.1016/j.memsci.2012.07.029

Cited by 146 publications

(96 citation statements)

References 22 publications

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“…Both CO2 permeation and ideal selectivity of LTA5 and Rho-filled MMM were enhanced in mixed gas separation in comparison with single gas permeation experiments, whereas this was not observed when CHA was used as filler. The real separation factor was calculated using equation (8). The separation factor has lower values than the ideal selectivity, because the zeolites and MMM adsorb preferentially the CO2 thus hindering the largest N2 molecule diffusion through the membrane.…”

Section: Mixed Gas Separation Propertiesmentioning

confidence: 99%

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Permselectivity improvement in membranes for CO2/N2 separation

Fernández-Barquín

Casado-Coterillo

Palomino

et al. 2016

Separation and Purification Technology

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In this work, small-pore zeolites of different topology (CHA, LTA5, Rho), all with Si/Al ratio of 5, have been added to highly permeable poly(1-trimethylsilyl-1-propyne) (PTMSP) to increase its selectivity and thermal and mechanical stability. Membranes were characterized by TGA, XRD, SEM and CO2 and N2 single gas permeation measurements at different temperatures. TGA reveal that the thermal resistance of the membranes is as good as pure PTMSP polymer. XRD and SEM results reflect that there is good interaction between the fillers and the membrane matrix, at 5 and 10 wt. % zeolite loadings, while at 20 wt.% a dual layer stucture is formed, when Rho zeolite is the filler, because the particle size of Rho is higher than those of LTA5 or CHA, and voids appear that limit the permselectivity performance. In single gas permeation of N2 and CO2, the influence of temperature, zeolite loading and type is analyzed. The selectivity of pure PTMSP is considerably enhanced with the addition of the zeolites and the increase of temperature, and the MMM loaded with 5 wt. % zeolite surpassed the Robeson's upper bound for CO2/N2 separation, without decreasing the permeability too much. Upon increasing temperature from 298 to 333 K, the permselectivity is enhanced even further without loss of permeability. The 5 wt% loaded membranes were tested in CO2/N2 mixed gas separation experiments at 333 K and 12.5 wt. % CO2 in the feed, and the permselectivity of LTA5-and Rho-PTMSP membranes was further enhanced, compared with the single gas permeation experiments.

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Section: Mixed Gas Separation Propertiesmentioning

confidence: 99%

“…Polymeric membranes appear, currently, to be the most advanced option for membrane-based post-combustion carbon capture in terms of CO2/N2 permselectivity [8].…”

Section: Introductionmentioning

confidence: 99%

Permselectivity improvement in membranes for CO2/N2 separation

Fernández-Barquín

Casado-Coterillo

Palomino

et al. 2016

Separation and Purification Technology

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“…The study showed that for all cases higher CO 2 permeance led to lower required membrane area and higher CO 2 /N 2 selectivity resulted in lower energy requirements for the separation. Ramasubramanian et al (2012) reported the effect of operating conditions and membrane price to the overall cost for separating CO 2 from post-combustion flue gases. A membrane with a CO 2 permeance of 9.9x10 -7 mol m -2 s -1 Pa -1 and a CO 2 /N 2 selectivity of 140 operating at close to atmospheric pressure and using an air-sweep process can achieve a CO 2 recovery of 90 % and a purity of 95 % at a cost <$24t -1 CO 2 .…”

Section: Introductionmentioning

confidence: 99%

The optimal point within the Robeson upper boundary

Castro-Dominguez

Leelachaikul

Messaoud

et al. 2015

Chemical Engineering Research and Design

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“…The most suitable membrane for single stage separation process would have about 8 m 3 (STP)/(m 2 h bar) permeance, a selectivity CO 2 /N 2 in the range of 140 and a price of 20 Euro/m 2 in module. [13] The required membrane surface is strongly dependent on membrane permeance but according to calculations using parameters of existing membranes it will be about one million square meters for a 600 MW power plant. Low feed pressure requires a vacuum scheme of membrane use and thus process selectivity and energy demand will depend on the vacuum created on permeate side of the membrane and pressure losses inside the membrane module.…”

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confidence: 99%

Stability of blended polymeric materials for CO2 separation

Lillepärg

Georgopanos

Shishatskiy

2014

Journal of Membrane Science

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Abstract:Blend materials of Pebax ® 1657 and low molecular weight poly(ethylene glycol)s were studied for their stability at temperature up to 90°C. It was found that a threshold of molecular weight exists at which leaching out of the low molecular weight compound from the polymer matrix becomes minimal. Poly(ethylene glycol) with methyl end groups having a molecular weight of 500 g/mol provides a blend material with a CO 2 permeability coefficient higher than in case of Polyactive™. PEBAX ® /DM500 blend can be a cheaper alternative to tailor made Polyactive™ in large scale production of thin film composite membrane.

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Membrane processes for carbon capture from coal-fired power plant flue gas: A modeling and cost study

Cited by 146 publications

References 22 publications

Permselectivity improvement in membranes for CO2/N2 separation

Permselectivity improvement in membranes for CO2/N2 separation

The optimal point within the Robeson upper boundary

Stability of blended polymeric materials for CO2 separation

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