Suppression characteristics and mechanisms of solid inhibitors on sawdust explosions in dust transportation systems

IF 3.6 3区工程技术 Q2 ENGINEERING, CHEMICAL

Journal of Loss Prevention in The Process Industries Pub Date : 2024-06-04 DOI:10.1016/j.jlp.2024.105361

Jianxu Ding , Yufang Chen , Maodong Li , Zhiyue Han , Xiangbao Meng , Runzhi Li , Shihang Li , Ernesto Salzano

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Abstract

The explosion characteristics of pine sawdust mixed with typical inhibitors (calcium carbonate, calcium phosphate, ammonium phosphate) were investigated under different inerting ratios in a vertical flame propagation device. Different analytical analyses by TG-DTG-DSC and FTIR analysis were also coupled to understand the physical and chemical mechanisms of the treated samples. The results show that the flame propagation velocity and the peak pressure decreased by more than 50% for an inerting ratio of 60 wt%.

This work clarifies the suppression characteristics and mechanism of different inhibitors in the flame propagation of biomass dust and yields some insights into the prevention and mitigation of biomass dust explosions in industrial applications.

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固体抑制剂对粉尘输送系统中锯末爆炸的抑制特性和机制

在垂直火焰传播装置中，研究了松木锯屑与典型抑制剂（碳酸钙、磷酸钙、磷酸铵）混合后在不同惰性比例下的爆炸特性。此外，还通过 TG-DTG-DSC 和傅立叶变换红外分析进行了不同的分析，以了解所处理样品的物理和化学机制。结果表明，当惰化比率为 60 wt% 时，火焰传播速度和峰值压力降低了 50% 以上。这项工作阐明了不同抑制剂在生物质粉尘火焰传播中的抑制特性和机理，并为在工业应用中预防和缓解生物质粉尘爆炸提供了一些启示。

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

Journal of Loss Prevention in The Process Industries 工程技术-工程：化工

CiteScore

7.20

自引率

14.30%

发文量

226

审稿时长

52 days

期刊介绍： The broad scope of the journal is process safety. Process safety is defined as the prevention and mitigation of process-related injuries and damage arising from process incidents involving fire, explosion and toxic release. Such undesired events occur in the process industries during the use, storage, manufacture, handling, and transportation of highly hazardous chemicals.