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Highly attrition-resistant zinc oxide-based sorbents for H2S removal by spray-drying technique / Joong B. Lee in Industrial & engineering chemistry research, Vol. 47 N° 13 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N° 13 (Juillet 2008) . - p. 4455–4464 Titre : Highly attrition-resistant zinc oxide-based sorbents for H2S removal by spray-drying technique Type de document : texte imprimé Auteurs : Joong B. Lee, Auteur ; Jeom-In Baek, Auteur ; Chong K. Ryu, Auteur ; Chang K. Yi, Auteur Année de publication : 2008 Article en page(s) : p. 4455–4464 Note générale : Bibliogr. p. 4463-4464 Langues : Anglais (eng) Mots-clés : ZnO-based  sorbent;  Spray-drying  technique;  ZAC  32N;  ZAC  32SU;  Desulfurization Résumé : A ZnO-based sorbent, ZAC 32N, applicable to transport reactors was successfully prepared by the spray-drying technique. Another sorbent, ZAC 32SU, was prepared by scale-up preparation of ZAC 32N sorbent. The physical properties of the sorbents such as attrition resistance, specific surface area, pore volume, and particle size were extensively characterized and exhibited a good potential for use in transport applications. The chemical reactivity tested in the thermogravimetric analyzer and microreactor exhibited desirable characteristics for effective desulfurization of syngas streams in the range of 450−550 °C. Bench-scale tests for the sorbent ZAC 32SU were performed for a continuous 160 h with a steady solid circulation of 54.6 kg/h. The results showed 99.5%+ desulfurization at 500−550 °C and reasonable regenerability at 550−620 °C. Test results on the physical properties and chemical reactivity indicated that the performance of developed sorbents proved to be outstanding. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie070962f [article] Highly attrition-resistant zinc oxide-based sorbents for H2S removal by spray-drying technique [texte imprimé] / Joong B. Lee, Auteur ; Jeom-In Baek, Auteur ; Chong K. Ryu, Auteur ; Chang K. Yi, Auteur . - 2008 . - p. 4455–4464. Bibliogr. p. 4463-4464 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 13 (Juillet 2008) . - p. 4455–4464 Mots-clés : ZnO-based  sorbent;  Spray-drying  technique;  ZAC  32N;  ZAC  32SU;  Desulfurization Résumé : A ZnO-based sorbent, ZAC 32N, applicable to transport reactors was successfully prepared by the spray-drying technique. Another sorbent, ZAC 32SU, was prepared by scale-up preparation of ZAC 32N sorbent. The physical properties of the sorbents such as attrition resistance, specific surface area, pore volume, and particle size were extensively characterized and exhibited a good potential for use in transport applications. The chemical reactivity tested in the thermogravimetric analyzer and microreactor exhibited desirable characteristics for effective desulfurization of syngas streams in the range of 450−550 °C. Bench-scale tests for the sorbent ZAC 32SU were performed for a continuous 160 h with a steady solid circulation of 54.6 kg/h. The results showed 99.5%+ desulfurization at 500−550 °C and reasonable regenerability at 550−620 °C. Test results on the physical properties and chemical reactivity indicated that the performance of developed sorbents proved to be outstanding. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie070962f