Experimental and Numerical Simulation Studies on the Atomization Characteristics of the Internal Mixing Nozzle and Its Field Application

IF 1.5 4区工程技术 Q3 METALLURGY & METALLURGICAL ENGINEERING

Mining, Metallurgy & Exploration Pub Date : 2024-03-09 DOI:10.1007/s42461-024-00955-x

Wenpu Li, Yiyi Zheng, He Shao, Xin Wang, Xi Chen, Yurong Gao

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Abstract

This study utilized experimental and numerical simulation methods to investigate and analyze the atomization characteristics of three internal air–water mixed atomizers under different operating conditions. By comparing the research results, the effective dust control working parameters for the application of the selected atomizer in the engineering field were determined. Firstly, the atomization characteristics of the three atomizers were studied using a customized experimental system. The results indicated that nozzle 2 had a wide atomization range, a small atomization distance, and small droplet size; nozzle 3 had a narrow atomization range, large droplet size, and fast atomization speed; and nozzle 1 not only had a large atomization range but also could produce droplets of dry mist size with fast atomization speed, meeting the dust reduction requirements of the Majiliang Coal Preparation Plant. Secondly, Fluent software was used to simulate the atomization process and particle size distribution of the three internal mixed atomizers, determining the working conditions of the atomizers, the required number of atomizers, and the application angle of the atomizers in the internal mixed dust removal system. Finally, the atomized dust control system was applied on-site, achieving a total dust removal efficiency of 90.72% and a respirable dust removal efficiency of 89.75%.

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内部混合喷嘴雾化特性的实验和数值模拟研究及其现场应用

本研究利用实验和数值模拟方法，研究分析了三种内部空气-水混合雾化器在不同工作条件下的雾化特性。通过对比研究结果，确定了所选雾化器在工程领域应用的有效防尘工作参数。首先，利用定制的实验系统研究了三种雾化器的雾化特性。结果表明，喷嘴 2 的雾化范围宽、雾化距离小、雾滴粒径小；喷嘴 3 的雾化范围窄、雾滴粒径大、雾化速度快；喷嘴 1 不仅雾化范围大，而且雾化速度快，能产生干雾粒径的雾滴，满足马家梁选煤厂的降尘要求。其次，利用 Fluent 软件模拟了三个内部混合雾化器的雾化过程和粒度分布，确定了内部混合除尘系统中雾化器的工作条件、所需雾化器的数量以及雾化器的作用角度。最后，将雾化粉尘控制系统应用于现场，实现了 90.72% 的总除尘效率和 89.75% 的可吸入粉尘除尘效率。

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来源期刊

Mining, Metallurgy & Exploration Materials Science-Materials Chemistry

CiteScore

3.50

自引率

10.50%

发文量

177

期刊介绍： The aim of this international peer-reviewed journal of the Society for Mining, Metallurgy & Exploration (SME) is to provide a broad-based forum for the exchange of real-world and theoretical knowledge from academia, government and industry that is pertinent to mining, mineral/metallurgical processing, exploration and other fields served by the Society. The journal publishes high-quality original research publications, in-depth special review articles, reviews of state-of-the-art and innovative technologies and industry methodologies, communications of work of topical and emerging interest, and other works that enhance understanding on both the fundamental and practical levels.