En
期刊文章
文章精选
当期目录
过刊浏览
高被引
高下载
特邀文章
专刊合集
待刊文章
Volume 103
您当前的位置：首页 > 期刊文章 > 过刊浏览 > Volumes 96-107 (2025) > Volume 103
Estiati, I., de Brito, R. C., Tellabide, M., Bolaños, M., Sukunza, X., Freire, F. B., . . . Olazar, M. (2025). Alumina intermittent drying using new draft tubes for scaling up conical spouted beds. Particuology, 103, 141-150. https://doi.org/10.1016/j.partic.2025.05.015
Alumina intermittent drying using new draft tubes for scaling up conical spouted beds (Open Access)
Idoia Estiati a *, Ronaldo Correia de Brito b, Mikel Tellabide a, Maider Bolaños a, Xabier Sukunza a, Fabio Bentes Freire b, José Teixeira Freire b, Martin Olazar a
a Department of Chemical Engineering, University of the Basque Country UPV/EHU, P.O. Box 644, E48080, Bilbao, Spain
b Department of Chemical Engineering, Federal University of São Carlos, Rod. Washington Luiz, km 235, P.O. Box 676, 13565-905, São Carlos, SP, Brazil
10.1016/j.partic.2025.05.015
Volume 103, August 2025, Pages 141-150
Received 13 February 2025, Revised 13 May 2025, Accepted 22 May 2025, Available online 29 May 2025, Version of Record 5 June 2025.
E-mail: idoia.estiati@ehu.es
Highlights

• Novel draft tubes have been assessed to scale up the spouted bed technology.

• Intermittent drying considerably decreases both drying time and energy requirements.

• New open-sided draft tube enhances spouting and drying operation.


Abstract

Novel draft tubes have been assessed to scale up the spouted bed technology. Accordingly, alumina drying runs have been conducted using different configurations (without tube and with open-sided and nonporous tubes) under intermittent strategies consisting in alternating periods of drying and periods of reduction or interruption of the air flow rate, and they have been compared with continuous drying. Furthermore, the influence the draft tubes have on the drying performance and energy requirements in the drying process has been evaluated. The results allow inferring that intermittent drying considerably decreases both drying time and energy requirements. Moreover, the new draft tubes improved the drying of alumina, as a similar energy efficiency than without draft tube was attained with lower specific energy consumption, which is essential to reduce the high-energy demand in the drying process and mitigate climate change. These findings, along with the stability the new tubes provided to the process, involve a further step in the scale up of spouted beds for industrial operations.

Graphical abstract
Keywords
Scaling up; New draft tubes; Drying; Intermittency; Conical spouted bed
文章导读