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Sorbents for high-temperature removal of alkali metals and HCl from municipal solid waste derived syngas

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Technical University of Crete   

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Sorbents for high-temperature removal of alkali metals and HCl from municipal solid waste derived syngas (EN)
Γιαννης Αποστολος (EL)
Liu Guicai (EN)
Veksha Andrei (EN)
Lisak Grzegorz (EN)
Huang Jijiang (EN)
Wu Xinyi (EN)
Lim Teik-Thye (EN)
Giannis Apostolos (EN)
Zhao Ya (EN)
journalArticle
2022
Impurities such as alkali metals (NaCl and KCl) and hydrogen chloride can limit downstream syngas utilization. In this study, a highly-active sorbent based on alumina containing active components for alkali metals and HCl sorption was synthesized for simultaneous removal of alkali metals and HCl from syngas at high temperatures of 750–850 °C in a reactor and compared with other sorbents (kaolin and γ-Al2O3). Results revealed that the removal efficiency of the developed sorbent for NaCl, KCl and HCl was the highest compared to kaolin and γ-Al2O3. At optimized conditions, the simultaneous alkali metal and HCl removal efficiencies were >80% and >70%, respectively (850 °C). Experimental data and thermodynamic calculations suggest that the removal of alkali metals was predominantly governed by physical sorption, while the removal of HCl was governed by chemical sorption. The physicochemical adsorption interactions between the sorbent and NaCl, KCl and HCl contributed to the simultaneous removal of alkali metals and HCl. (EN)
Dechlorination (EN)
Alkali metals (EN)
Waste to energy (EN)
Municipal solid waste (EN)
Syngas purification (EN)
Fuel (EN)
English
Elsevier (EN)
Πολυτεχνείο Κρήτης (EL)
Technical University of Crete (EN)
Technical University of Crete
Institutional Repository Technical University of Crete
School of Electrical and Computer Engineering - Diploma Works
Distributed Multimedia Information Systems and Applications Laboratory - Diploma Works



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