Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage
This research work deals with the application of the calcium looping concept for thermochemical energy storage. Experiments were carried out in a lab-scale fluidised bed reactor, which was electrically heated. An Italian limestone (98.5% CaCO<sub>3</sub>, 420–590 μm) was present in the b...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/19/6942 |
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| author | Francesca Di Lauro Claudio Tregambi Fabio Montagnaro Laura Molignano Piero Salatino Roberto Solimene |
| author_facet | Francesca Di Lauro Claudio Tregambi Fabio Montagnaro Laura Molignano Piero Salatino Roberto Solimene |
| author_sort | Francesca Di Lauro |
| collection | DOAJ |
| description | This research work deals with the application of the calcium looping concept for thermochemical energy storage. Experiments were carried out in a lab-scale fluidised bed reactor, which was electrically heated. An Italian limestone (98.5% CaCO<sub>3</sub>, 420–590 μm) was present in the bed alone, or in combination with silica sand/silicon carbide (this last material was chosen as per its high absorption capacity in the solar spectrum). Calcium looping tests (20 calcination/carbonation cycles) were carried out under operating conditions resembling the “closed-loop” scheme (calcination at 950 °C, carbonation at 850 °C, fluidising atmosphere composed of pure CO<sub>2</sub> in both cases). Carbonation degree, particle size distribution, and particle bulk density were measured as cycles progressed, together with the application of a model equation to relate carbonation degree to the number of cycles. Mutual relationships between the nature of the bed material and possible interactions, the degree of CaO carbonation, the generation of fragments, and changes in particle density and porosity are critically discussed. An investigation of the segregation behaviour of the bed material has been carried out through tests in a devoted fluidisation column, equipped with a needle-type capacitive probe (to measure solid concentration). |
| first_indexed | 2024-03-10T21:45:49Z |
| format | Article |
| id | doaj.art-85ba98e2d7464e859fab36d0e9d2eb80 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T21:45:49Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-85ba98e2d7464e859fab36d0e9d2eb802023-11-19T14:21:02ZengMDPI AGEnergies1996-10732023-10-011619694210.3390/en16196942Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy StorageFrancesca Di Lauro0Claudio Tregambi1Fabio Montagnaro2Laura Molignano3Piero Salatino4Roberto Solimene5Dipartimento di Scienze Chimiche, Complesso Universitario di Monte Sant’Angelo, Università degli Studi di Napoli Federico II, 80126 Napoli, ItalyDipartimento di Ingegneria, Università degli Studi del Sannio, Piazza Roma 21, 82100 Benevento, ItalyDipartimento di Scienze Chimiche, Complesso Universitario di Monte Sant’Angelo, Università degli Studi di Napoli Federico II, 80126 Napoli, ItalyDipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, ItalyDipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Piazzale Tecchio 80, 80125 Napoli, ItalyIstituto di Scienze e Tecnologie per L’Energia e la Mobilità Sostenibili, Consiglio Nazionale delle Ricerche, Piazzale Tecchio 80, 80125 Napoli, ItalyThis research work deals with the application of the calcium looping concept for thermochemical energy storage. Experiments were carried out in a lab-scale fluidised bed reactor, which was electrically heated. An Italian limestone (98.5% CaCO<sub>3</sub>, 420–590 μm) was present in the bed alone, or in combination with silica sand/silicon carbide (this last material was chosen as per its high absorption capacity in the solar spectrum). Calcium looping tests (20 calcination/carbonation cycles) were carried out under operating conditions resembling the “closed-loop” scheme (calcination at 950 °C, carbonation at 850 °C, fluidising atmosphere composed of pure CO<sub>2</sub> in both cases). Carbonation degree, particle size distribution, and particle bulk density were measured as cycles progressed, together with the application of a model equation to relate carbonation degree to the number of cycles. Mutual relationships between the nature of the bed material and possible interactions, the degree of CaO carbonation, the generation of fragments, and changes in particle density and porosity are critically discussed. An investigation of the segregation behaviour of the bed material has been carried out through tests in a devoted fluidisation column, equipped with a needle-type capacitive probe (to measure solid concentration).https://www.mdpi.com/1996-1073/16/19/6942thermochemical energy storagefluidised bedcalcium loopinglimestonesilicon carbidesegregation |
| spellingShingle | Francesca Di Lauro Claudio Tregambi Fabio Montagnaro Laura Molignano Piero Salatino Roberto Solimene Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage Energies thermochemical energy storage fluidised bed calcium looping limestone silicon carbide segregation |
| title | Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage |
| title_full | Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage |
| title_fullStr | Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage |
| title_full_unstemmed | Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage |
| title_short | Influence of Fluidised Bed Inventory on the Performance of Limestone Sorbent in Calcium Looping for Thermochemical Energy Storage |
| title_sort | influence of fluidised bed inventory on the performance of limestone sorbent in calcium looping for thermochemical energy storage |
| topic | thermochemical energy storage fluidised bed calcium looping limestone silicon carbide segregation |
| url | https://www.mdpi.com/1996-1073/16/19/6942 |
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