Effects of particle size and concentration on flame propagation characteristics of DL-methionine dust explosion

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-02-24 DOI:10.1016/j.tsep.2025.103448

Ying Zhang, Hao Wang, Qi Zhao, Xianfeng Chen

{"title":"Effects of particle size and concentration on flame propagation characteristics of DL-methionine dust explosion","authors":"Ying Zhang, Hao Wang, Qi Zhao, Xianfeng Chen","doi":"10.1016/j.tsep.2025.103448","DOIUrl":null,"url":null,"abstract":"<div><div>Dl-methionine (DLM) is extensively utilized in pharmaceuticals, food, feed, and cosmetics, presenting significant fire and explosion risks during processing and production. To insight into the characteristics of DLM dust explosions, fully understand the risks of DLM explosions. This study uses a vertical pipeline system to investigate the explosion behavior of DLM dust with different concentrations and particle sizes. The thermal decomposition characteristics, gas products, and activation energy of DLM in an air atmosphere were examined using synchronized thermal analysis (STA) and thermogravimetric mass spectrometry (TG-MS). Experimental results indicate that at a particle size of 18.86 μm and a dust concentration of 350 g/m<sup>3</sup>, the flame exhibits maximum brightness, uniform distribution, maximum temperature and fastest velocity. Particle size was found to have more pronounced effect on flame propagation in DLM dust explosion compared to concentration. When the dust concentration is high, the agglomeration effect of the smaller particles becomes a main factor affecting flame propagation. The Flynn-Wall-Ozawa (FWO) method revealed an average activation energy of 198.01 kJ/mol for DLM, and combustion reactions being more probable when the conversion rate (<em>α</em>) is not exceed 70 %. This study may provide a foundation for DLM dust explosion prevention in future.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103448"},"PeriodicalIF":5.1000,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904925002380","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

Dl-methionine (DLM) is extensively utilized in pharmaceuticals, food, feed, and cosmetics, presenting significant fire and explosion risks during processing and production. To insight into the characteristics of DLM dust explosions, fully understand the risks of DLM explosions. This study uses a vertical pipeline system to investigate the explosion behavior of DLM dust with different concentrations and particle sizes. The thermal decomposition characteristics, gas products, and activation energy of DLM in an air atmosphere were examined using synchronized thermal analysis (STA) and thermogravimetric mass spectrometry (TG-MS). Experimental results indicate that at a particle size of 18.86 μm and a dust concentration of 350 g/m³, the flame exhibits maximum brightness, uniform distribution, maximum temperature and fastest velocity. Particle size was found to have more pronounced effect on flame propagation in DLM dust explosion compared to concentration. When the dust concentration is high, the agglomeration effect of the smaller particles becomes a main factor affecting flame propagation. The Flynn-Wall-Ozawa (FWO) method revealed an average activation energy of 198.01 kJ/mol for DLM, and combustion reactions being more probable when the conversion rate (α) is not exceed 70 %. This study may provide a foundation for DLM dust explosion prevention in future.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.