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Performance of limestone-based sorbent for sorption-enhanced gasification in dual interconnected fluidized bed reactors |
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| Authors: | Antonio Coppola Aida Sattari Fabio Montagnaro Fabrizio Scala Piero Salatino |
| Affiliation: | 1. Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili, Consiglio Nazionale delle Ricerche, Naples, Italy
Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), ?Investigation (equal), Methodology (equal), Supervision (equal), Validation (equal), Writing - review & editing (equal);2. Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Naples, Italy Contribution: ?Investigation (equal), Methodology (equal);3. Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy;4. Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili, Consiglio Nazionale delle Ricerche, Naples, Italy Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Naples, Italy Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Supervision (equal), Validation (equal), Writing - review & editing (equal);5. Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili, Consiglio Nazionale delle Ricerche, Naples, Italy Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Naples, Italy Contribution: Conceptualization (equal), Formal analysis (equal), Supervision (equal), Writing - review & editing (equal) |
| Abstract: | A possibility to carry out sorption-enhanced gasification (SEG) is represented by its integration with the calcium looping concept in dual interconnected fluidized beds (DIFB). This article is focused on the sorbent CO2 uptake performance and attrition/fragmentation tendency when operating conditions simulating those of a DIFB-SEG process are adopted. Experiments were carried out on a commercial Italian limestone in a laboratory-scale DIFB reactor. Carbonation was carried out in a range of test conditions, including variable temperature (600–700°C) and absence/presence of steam (10% by volume); CO2 concentration was set at 10% by volume. The characterization is extended by investigating the behavior of preprocessed DIFB-SEG samples on impact fragmentation tests, conducted in an ex situ apparatus. Tests were carried out for impact velocities in the range 17–45 m/s. Results were discussed considering both the impact velocity value and the operating conditions under which the sample was preprocessed in the fluidized bed. |
| Keywords: | attrition CO2 capture fluidized beds gasification impact fragmentation limestone sorbent |