Alumina intermittent drying using new draft tubes for scaling up conical spouted beds

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2025-05-29 DOI:10.1016/j.partic.2025.05.015

Idoia Estiati , Ronaldo Correia de Brito , Mikel Tellabide , Maider Bolaños , Xabier Sukunza , Fabio Bentes Freire , José Teixeira Freire , Martin Olazar

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引用次数: 0

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.

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利用新型引水管扩大锥形喷床的氧化铝间歇干燥

对新型导流管进行了评估，以扩大喷床技术的规模。因此，氧化铝干燥运行使用不同的配置（无管和开边和无孔管）在间歇策略下进行，包括交替的干燥周期和减少或中断空气流速的周期，并与连续干燥进行比较。此外，还对干燥过程中尾水管对干燥性能和能量需求的影响进行了评价。结果可以推断，间歇干燥大大减少了干燥时间和能量要求。此外，新的导流管改善了氧化铝的干燥，因为与没有导流管相比，获得了相似的能源效率，比能耗更低，这对于减少干燥过程中的高能量需求和缓解气候变化至关重要。这些发现，以及新管道为该工艺提供的稳定性，涉及到在工业操作中扩大喷床规模的进一步步骤。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Particuology 工程技术-材料科学：综合

CiteScore

6.70

自引率

2.90%

发文量

1730

审稿时长

32 days

期刊介绍： The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles. Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors. Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology. Key topics concerning the creation and processing of particulates include: -Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales -Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes -Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc. -Experimental and computational methods for visualization and analysis of particulate system. These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.