叶轮结构对立式强化造粒机颗粒流动和粘附特性的影响

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-07-24 DOI:10.1016/j.apt.2025.105017

Zhijian Zuo , Bingwen Feng , Xingfu Lu , Yuan Yang , Shuguang Gong , Jianping Zhang

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引用次数: 0

摘要

造粒机的性能优化是许多工业应用中处理颗粒物质的一个重要问题。这项工作研究了颗粒流动和粘附行为在一个垂直密集造粒机是如何受到四个结构参数的影响：叶片类型，叶轮偏移，叶片数量和螺纹节距。通过比较叶轮扭矩和颗粒黏附行为，对模型进行了验证。采用颗粒速度场、速度波动、座标数（CN）、接触数相对标准偏差（RSDC）等指标对颗粒动力学和粘附行为进行量化。结果表明，螺纹叶片的颗粒搅拌速度低于圆弧叶片和直叶片；颗粒速度和速度波动随叶轮偏置的减小而增大。叶片数和螺纹节距的增加导致颗粒速度的增加。结果表明：叶轮偏置为55 mm、螺距为80 mm的螺纹叶片粘接性能最佳，粘接性能随叶片数的增加而降低；

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of impeller structure on the particle flow and adhesion behavior in a vertical intensive granulator

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Effect of impeller structure on the particle flow and adhesion behavior in a vertical intensive granulator

Performance optimization of a granulator is an important issue in many industrial applications dealing with granular matter. This work investigates how the particle flow and adhesion behavior in a vertical intensive granulator are affected by four structural parameters: blade type, impeller offset, blade number, and thread pitch. The DEM model was validated by comparing the impeller torque and adhesion behavior of particles. The particle velocity field, velocity fluctuation, coordinate number (CN), the relative standard deviation of contact number (RSDC) were used to quantify the particle dynamics and adhesion behavior. It was found that the particle velocity agitated by thread blade is lower than arc and straight blades; the particle velocity and velocity fluctuation increase with the decrease of impeller offset. Increasing the blade number and thread pitch leads to an increase in the particle velocity. Results obtained indicate that the thread blade with an impeller offset of 55 mm and a thread pitch of 80 mm has the best adhesion behavior, and the adhesion behavior decreases with the increase of blade number.

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)