非球形颗粒在脉冲流化床中的干燥过程研究

IF 4.1 2区材料科学 Q2 ENGINEERING, CHEMICAL

Particuology Pub Date : 2025-02-12 DOI:10.1016/j.partic.2025.01.013

Hanyu Jin , Shuai Wang , Yurong He

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引用次数: 0

摘要

气体脉动是流化床干燥过程中一种有效的强化方式。本文采用计算流体动力学离散元法（CFD-DEM）对含非球形湿颗粒的流化床中气体脉动对质量和传热性能的影响进行了数值研究，其中考虑了颗粒之间的液体传递和液桥传热。揭示了非球形颗粒长径比对干燥过程的影响。研究发现，长径比的增大会使整体干燥质量变差。分析了气体脉动对非球形颗粒干燥的影响。结果表明，调节合适的气体脉动模式可以有效调节大宽高比非球形湿颗粒的干燥过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Investigation of drying process of non-spherical particle in a pulsed fluidized bed

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Investigation of drying process of non-spherical particle in a pulsed fluidized bed

Gas pulsation is an efficient enhancing way for fluidized bed drying process. In this work, the influence of gas pulsation on mass and heat transfer performance in a fluidized bed with non-spherical wet particles is numerically investigated via the computational fluid dynamics−discrete element method (CFD-DEM) approach, where the liquid transfer between particles and the heat transfer by liquid bridge are considered. The aspect ratio effect of non-spherical particle on drying process is revealed. It is found that the increase of aspect ratio can weaken the overall drying quality. The influence of gas pulsation on the drying of non-spherical particle is analyzed. The results reveal that adjusting a suitable gas pulsation mode can efficiently regulate the drying process of non-spherical wet particles with greater aspect ratios.

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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.