Influence of calcination conditions on carrying capacity of CaO-based sorbent in CO2 looping cycles

Manović, Vasilije; Charland, Jean‐Pierre; Blamey, John; Fennell, Paul S.; Lu, Dennis Y.; Anthony, Edward J.

doi:10.1016/j.fuel.2009.04.012

Cited by 182 publications

(143 citation statements)

References 37 publications

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“…On further examination it can be seen that the temperature of calcination had a significant effect on the long term carrying capacity (figure 2), which is consistent with the work of Manovic et al, [30].…”

supporting

confidence: 90%

“…Principally, the calcination conditions have been modified, as the influence of high temperature CO2 on the rate and extent of sintering has been shown to be the most significant parameter on the sorbents longevity [30]. The carbonation time was also shortened to 5 minutes since it is not realistic to have such long carbonation times in an industrial setting, although the authors accept that even 5 minutes could be considered a long time period for carbonation.…”

Section: Introductionmentioning

confidence: 99%

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Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

Clough

Boot-Handford

Zhao

et al. 2016

Fuel

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supporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

Clough

Boot-Handford

Zhao

et al. 2016

Fuel

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“…Despite low costs, CaO-based sorbents show a fast deactivation and a decrease in their CO2 capture capacity over reaction cycles because of sintering phenomena, crystal growth and pore blocking during the calcination step (Abanades and Alvarez, 2003;Symonds et al, 2009;Grasa and Abanades, 2006;González et al, 2008;Manovic et al, 2009;Kuramoto, 2003). Previous studies show that high calcination temperatures accelerate this deactivation process (Grasa and Abanades, 2006;González et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

The Use of a High Limestone Content Mining Waste as a Sorbent for Co2 Capture

Damasceno

Hori

2016

Braz. J. Chem. Eng.

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-In this work, a high limestone content waste was evaluated as a potential material for CO2 capture. The influence of calcination conditions on the CO2 capture capacity was evaluated using 5 cycles of calcinationhydration-carbonation reactions. A Central Composite Design of Experiments was set using calcination temperatures and time as variables. The response evaluated was the CO2 capture measured by thermogravimetric analysis. The results indicate that both calcination temperature and time influence the CO2 capture capacities in the initial cycles but, after a large number of cycles, the effect becomes less relevant. The optimum calcination temperature did not change significantly between cycles -about 893 °C in the first and 850 °C in the fourth cycle. However, the optimum calcination time decreased from 40.1 min in the first to 22.5 min in the fourth cycle. The maximum CO2 capture capacity declines over the reaction cycles due to the sorbent sintering, which becomes more noticeable. Moreover, the waste used in this work is suitable for separating CO2 from flue gas, achieving more than 0.2 g/g of capture capacity after five cycles.

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“…Hence sorbent regeneration conditions for SESR are considerably less severe than for PCC, but nevertheless unmodified CaO shows serious loss of CO 2 capacity after repeated calcination cycles leading to lower H 2 yields 5, 6 . Thus, there is an economic need to develop high reactivity CaO-based sorbents that maintain performance between 0.3 to 0.78 g-CO 2 /g-sorbent over multiple CO 2 capture cycles for SESR applications 7, 8 .…”

Section: Introductionmentioning

confidence: 99%

“…Calcination conditions have a major effect on durability 8 , with increased calcination temperatures and dwell times giving increased densification, lower porosity and lower CO 2 uptake within the timescale of each cycle (≥ 5 cycles), however the preceding carbonation conditions also affect the degree of densification during calcination. Carbonate decomposition initially produces a porous structure: the more extensive the carbonation reaction the greater the degree of porosity generated on initial decarbonation which can result in less densification at the completion of the calcination cycle.…”

Section: Introductionmentioning

confidence: 99%

Durability of CaO–CaZrO₃ Sorbents for High-Temperature CO₂ Capture Prepared by a Wet Chemical Method

Zhao¹,

Bilton²,

Brown³

et al. 2014

Energy Fuels

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eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. initial rise in CO 2 uptake capacity in the first 10 carbonation-decarbonation cycles, increasing from 0.31g-CO 2 / g-sorbent in cycle 1 to 0.37 g-CO 2 / g-sorbent in cycle 10 and stabilizing at this value for the remainder of the 30 cycles tested: carbonation at 650 in 15% CO 2 ; calcination at 800 in air. Under more severe conditions of calcination at 950 in 100% CO 2 following carbonation at 650 in 100 % CO 2 , the best overall performance was for a sorbent with 30 wt% CaZrO 3 : 70 wt% CaO (the highest Zr ratio studied), with an initial uptake of 0.36 g-CO 2 /g-sorbent decreasing to 0.31 g-CO 2 /g-sorbent at the 30 th cycle.Electron microscopy revealed CaZrO 3 was present in the form of ≤ 0.5 µm cuboid and 20-80 nm particles dispersed within a porous matrix of CaO/CaCO 3 ; the nanoparticles are considered to be the principal reason for promoting multicycle durability.

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Influence of calcination conditions on carrying capacity of CaO-based sorbent in CO2 looping cycles

Cited by 182 publications

References 37 publications

Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

The Use of a High Limestone Content Mining Waste as a Sorbent for Co2 Capture

Durability of CaO–CaZrO₃ Sorbents for High-Temperature CO₂ Capture Prepared by a Wet Chemical Method

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Influence of calcination conditions on carrying capacity of CaO-based sorbent in CO2 looping cycles

Cited by 182 publications

References 37 publications

Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

Degradation study of a novel polymorphic sorbent under realistic post-combustion conditions

The Use of a High Limestone Content Mining Waste as a Sorbent for Co2 Capture

Durability of CaO–CaZrO3 Sorbents for High-Temperature CO2 Capture Prepared by a Wet Chemical Method

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Product

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Durability of CaO–CaZrO₃ Sorbents for High-Temperature CO₂ Capture Prepared by a Wet Chemical Method