Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Dou, Binlin; Wang, Chao; Song, Yongchen; Chen, Haisheng; Jiang, Bo; Yang, Mingjun; Xu, Yujie

doi:10.1016/j.rser.2015.08.068

Cited by 182 publications

(79 citation statements)

References 120 publications

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“…There are several technologies that have been proposed to tackle the problem of CO2 emissions: carbon capture and storage technologies [4,5], absorption methods based on amine solutions [6] or solid minerals [7][8][9]. Both carbon capture & storage and solvent scrubbing towers technologies require high capital investments, whereas reverse absorption of CO2 by freely available and cheap solid catalysts (various minerals, CaO, MgO, mixed oxides) can be considered as more commercially attractive technology.…”

Section: Carbon Capture and Storage Technologiesmentioning

confidence: 99%

A radiofrequency heated reactor system for post-combustion carbon capture

Fernández

Sotenko

Derevschikov

et al. 2016

Chemical Engineering and Processing: Process Intensification

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Several problems with stabilization of electricity grid system are related to the time lag between the electricity supply and demand of the end users. Many power plants run for a limited period of time to compensate for increased electricity demand during peak hours. The amount of CO2 generated by these power installations can be substantially reduced via the development of new demand side management strategies utilizing CO2 absorption units with a short start-up time.The sorbent can be discharged using radiofrequency (RF) heating to fill the night-time valley in electricity demand helping in the stabilization of electricity grid. Herein a concept of RF heated fixed bed reactor has been demonstrated to remove CO2 from a flue gas using a CaCO3 sorbent. A very stable and reproducible operation has been observed over twenty absorptiondesorption cycles. The application of RF heating significantly reduced the transition time required for temperature excursions between the absorption and desorption cycles. The effect of flow reversal during desorption on desorption time has been investigated. The desorption time was reduced by 1.5 times in the revered flow mode and the total duration of a single absorption-desorption cycle was reduced by 20%. A reactor model describing the reduced desorption time has been developed. 2 Highlights• An RF reactor system has been demonstrated for post-combustion carbon capture.• The transition time between the absorption and desorption cycles was reduced by 2 times as compared to conventional heating• The reverse CO2 desorption flow mode reduced the desorption time by 1.5 times.• The energy efficiency of RF heated and conventionally heated bench reactors was compared

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Section: Carbon Capture and Storage Technologiesmentioning

confidence: 99%

A radiofrequency heated reactor system for post-combustion carbon capture

Fernández

Sotenko

Derevschikov

et al. 2016

Chemical Engineering and Processing: Process Intensification

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“…It provides a viable CO 2 control technology, i.e., sorption-enhanced chemical looping (SE-CL), for process intensification [15] or high-purity chemicals (CO 2 -lean) production [28]. The SE-CL process embodies two steps: CO 2 is in-situ absorbed through the carbonation of a metal oxide, forming metal carbonate in the carbonator, afterwards the latter is calcined at higher temperature to regenerate the metal oxide, thereby releasing CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Advanced Chemical Looping Materials for CO2 Utilization: A Review

Galvita

Poelman

et al. 2018

Materials

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Combining chemical looping with a traditional fuel conversion process yields a promising technology for low-CO2-emission energy production. Bridged by the cyclic transformation of a looping material (CO2 carrier or oxygen carrier), a chemical looping process is divided into two spatially or temporally separated half-cycles. Firstly, the oxygen carrier material is reduced by fuel, producing power or chemicals. Then, the material is regenerated by an oxidizer. In chemical looping combustion, a separation-ready CO2 stream is produced, which significantly improves the CO2 capture efficiency. In chemical looping reforming, CO2 can be used as an oxidizer, resulting in a novel approach for efficient CO2 utilization through reduction to CO. Recently, the novel process of catalyst-assisted chemical looping was proposed, aiming at maximized CO2 utilization via the achievement of deep reduction of the oxygen carrier in the first half-cycle. It makes use of a bifunctional looping material that combines both catalytic function for efficient fuel conversion and oxygen storage function for redox cycling. For all of these chemical looping technologies, the choice of looping materials is crucial for their industrial application. Therefore, current research is focused on the development of a suitable looping material, which is required to have high redox activity and stability, and good economic and environmental performance. In this review, a series of commonly used metal oxide-based materials are firstly compared as looping material from an industrial-application perspective. The recent advances in the enhancement of the activity and stability of looping materials are discussed. The focus then proceeds to new findings in the development of the bifunctional looping materials employed in the emerging catalyst-assisted chemical looping technology. Among these, the design of core-shell structured Ni-Fe bifunctional nanomaterials shows great potential for catalyst-assisted chemical looping.

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“…Reverse absorptive methods are in this category and they can use either liquid (amine based solutions, for example) [5] or solid sorbents [6][7][8][9] in order to selectively capture emitted CO2 with the following desorption stage. In comparison to solvent scrubbing methods which require construction of spacious facilities and tanks to handle great quantities of amine-based solvents, solid oxide based reverse absorption methods are considered to be cost-effective alternative for the problem of CO2 mitigation.…”

Section: Introductionmentioning

confidence: 99%

Performance of novel CaO-based sorbents in high temperature CO 2 capture under RF heating

Sotenko

Fernández

et al. 2017

Chemical Engineering and Processing: Process Intensification

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ReuseThis article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) licence. This licence only allows you to download this work and share it with others as long as you credit the authors, but you can't change the article in any way or use it commercially. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If 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. AbstractThe problem of CO2 mitigation on a small and medium scale can be resolved by developing a combined system of CO2 capture and its consecutive conversion into valuable products. The first stage of CO2 looping, however, should be reliable, effective and easy to control and radiofrequency heating, as a new advanced technology, can be used to improve the process.CO2 absorption and desorption RF units can be installed within power plants and powered during the periods of low energy demand thus stabilizing the electrical grid. In this work, aCaO sorbent produced by template synthesis was studied as a sorbent for a CO2 looping system under RF heating which offers short start-up times, highly controlled operation, high degree of robustness and low price. The sorbent reached its stable CO2 capacity of 15.4 wt.% already after 10 temperature cycles (650/850 o C) under RF heating. Higher CO2 desorption rate and lower degree of the sorbent sintering was observed under RF heating as compared to conventional heating.2

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Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Cited by 182 publications

References 120 publications

A radiofrequency heated reactor system for post-combustion carbon capture

A radiofrequency heated reactor system for post-combustion carbon capture

Advanced Chemical Looping Materials for CO2 Utilization: A Review

Performance of novel CaO-based sorbents in high temperature CO 2 capture under RF heating

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