Study on the separation efficiency of sheath flow respirable dust virtual impact separator under the influence of multiple parameters

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2024-11-04 DOI:10.1016/j.psep.2024.11.004

Liang Zhu , Bingyou Jiang , Jie Wang , Yifan Wang , Hanyi Lin , Jie Wu , Yang Zhao

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Abstract

To improve the separation efficiency of respirable dust separator in coal mine, a sheath flow virtual impact separator was designed. Through numerical simulation, the separation law of respirable dust in separator under the effect of various structural parameters, such as the spacing between nozzle and large-particle collection chamber (S), the width of the large-particle collection chamber (D), and sheath flow angle (θ), was obtained. The maximum difference between the results of experiment and simulation is only 4.72 %. The results show that the separation efficiency of separator at each particle size point increases continuously with the increase of S. When D increases, the deviation degree of the separation efficiency curve from the BMRC curve decreases and then increases. When θ increases, the overall change of separation efficiency curve is small. The parameter optimization scheme was obtained using response surface methodology. The research results provide reference for improving the structure of respirable dust separator in coal mine, and further promote the development of accurate monitoring technology for respirable dust.

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多参数影响下鞘流可吸入粉尘虚拟冲击分离器的分离效率研究

为提高煤矿可吸入粉尘分离器的分离效率，设计了一种护套流虚拟冲击分离器。通过数值模拟，得到了在喷嘴与大颗粒收集室间距（S）、大颗粒收集室宽度（D）和护套流角度（θ）等不同结构参数影响下，分离器中可吸入粉尘的分离规律。实验结果与模拟结果的最大差异仅为 4.72%。结果表明，随着 S 的增大，分离器在各粒度点的分离效率不断提高。当θ增大时，分离效率曲线的整体变化较小。利用响应面方法获得了参数优化方案。研究成果为改进煤矿可吸入粉尘分离器结构提供了参考，进一步推动了可吸入粉尘精确监测技术的发展。

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

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.