Development of a new clay supported polyethylenimine composite for CO2 capture

Wang, Weilong; Xiao, Jing; Wei, Xiaolan; Ding, Jing; Wang, Xiaoxing; Song, Chunshan

doi:10.1016/j.apenergy.2013.03.090

Cited by 131 publications

(92 citation statements)

References 37 publications

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“…5) for the just reported studies is comparable to the ∼ 200 kg/m 3 estimated difference between fresh-and worn-out-postadsorption SSA (based on the adsorption capacity of 142 mg of CO 2 per g of sorbent, reported by Wang et al 2014b, multiplied by the 1400 kg/m 3 SSA density of Zhang et al 2014a). Some degree of separation could already be possible, at least between freshest and oldest SSA particles; development of sorbents with higher adsorption capacity will increase density difference between fresh and spent sorbent, making separation sharper.…”

Section: Consequence Of Separation Errorssupporting

confidence: 62%

“…The difference in the mass of sorbent particles before and after adsorption reaches ∼ 14% in some studies (Wang et al, 2014b). According to accepted theories on physical adsorption (Brunauer-Emmett-Teller, or BET, and its precursors and evolutions, see for example Rouquerol et al 2013), the adsorbed gas gets confined, by the Lennard-Jones potential (Mortimer, 2000), in layers within few • A of the surfaces of the sorbent particles.…”

Section: Selective Replacement Methodsmentioning

confidence: 99%

“…2) moves material between two circulating fluidized beds. In the first one, the CO 2 -laden flue gas is blown through the sorbent (Zhao et al, 2013a;Rodriguez et al, 2010;Wang et al, 2014c) and CO 2 is adsorbed. In the second bed CO 2 is removed (the sorbent is regenerated), for example by fanning nitrogen (e.g.…”

Section: Standard Replacement Methodsmentioning

confidence: 99%

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Selective strategy for solid sorbent replacement in CCS

Colantuono

Cockerill

2017

Chemical Engineering Research and Design

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Please cite this article as: Giuseppe Colantuono, Timothy Cockerill, Selective strategy for solid sorbent replacement in CCS, (2017), http://dx.doi.org/10. 1016/j.cherd.2017.01.030 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Page 1 of 21A c c e p t e d M a n u s c r i p tThe continuous replacement of solid sorbent in post-combustion CCS loops is modeled. The known method removes/replaces a constant amount of sorbent after each iteration. Known method discards fresher material, too, as the looping sorbent is fully mixed. We can sort removed CO2-loaded sorbent: the fresher is denser due to higher capacity. Our novel strategy puts freshest sorbent back; we compute the reduced need of sorbent. *Research HighlightsPage 2 of 21 AbstractAn innovative method for sorbent replacement in the looping of a generic solid sorbent for post-combustion carbon capture and sequestration (CCS) is introduced. First, the standard replacement method is revisited with some original results presented. A new strategy is then modeled, aimed at selectively replacing the material as it degrades. This method exploits the density difference, after adsorption, between relatively fresh, CO 2 -laden sorbent and relatively degraded material, with small residual adsorption capacity. The model is then applied to values of degradation rate within the experimental range available in scientific literature for silica-supported amines (SSA). The selective removal strategy ideally allows a saving of 37% of the sorbent with respect to the standard, undifferentiated replacement considered in first place, while keeping the same adsorptive capacity of the system.

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Section: Consequence Of Separation Errorssupporting

confidence: 62%

Section: Selective Replacement Methodsmentioning

confidence: 99%

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Selective strategy for solid sorbent replacement in CCS

Colantuono

Cockerill

2017

Chemical Engineering Research and Design

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“…Colored band show the range. This work (d, colored), DBUOH/amorphous silica@298 K (e, s) [25], DBUOH/SBA-15@298 K (D) [25], CP/SBA-15@298 K (d, black) [26], AO/SBA-15@298 K (Ç, black) [26], Arg/PSS-PMMA@298K39 (h) [27], EmimGly/PMMA@313 K (N, black) [28], AM-TEPA/DMS@298 K (j, black) [29], PEI/clay@348 K (x) [30], TEPA/SiO 2 aerogel@348 K (+, ⁄) [31]. This unprecedented capacity of the hybrid sorbents (sevenfold increase compared with the bulk, and threefold compared with the support) is superior to many other widely explored supported amine-based systems [23][24][25][26][27][28][29][30][31], as shown in Fig.…”

Section: Resultsmentioning

confidence: 98%

Synergistic enhancement of CO2 uptake in highly ordered mesoporous silica-supported zinc-functionalized ionic liquid sorbents

Arellano

Huang

Pendleton

2015

Chemical Engineering Journal

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“…Wang et al [41], and all reached their maximum values at 55 °C. As the temperature increased, the kinetic energy of the CO 2 molecules increased and the diffusion enhanced.…”

Section: Adsorption Temperaturementioning

confidence: 95%