Experiment and mechanism of explosion suppression thermal properties of multicomponent powder

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Thermochimica Acta Pub Date : 2025-02-09 DOI:10.1016/j.tca.2025.179953

Rongkun Pan , Chensheng Wang , Qingsheng Zhang , Chenzhuo Song , Chang Lu , Ligang Zheng , Bei Pei , Lei Chen

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引用次数: 0

Abstract

In this paper, staged thermal characteristic experiments were conducted on commonly used powder explosion suppressants using a high-precision C600 microcalorimeter. The thermal decomposition process was divided into three stages, and a comprehensive analysis was carried out on the thermal flow curves, dHF, initial heat flow value H₀, minimum heat flow value H_min, characteristic points, and heat absorption amount Q of twelve powder explosion suppressants, including attapulgite and montmorillonite. The results indicate that carbamide has the smallest minimum heat flow value H_min during powder thermal decomposition, while CaCO₃ has the largest minimum heat flow value H_min. Carbamide exhibited the highest overall heat absorption amount, while NaCl showed the lowest overall heat absorption amount. The mechanism of inhibiting methane explosion with different powder suppressors was analyzed by comparing the pyrolysis experiment results. The conclusions of this study can serve as a theoretical foundation for the rational selection of powder explosion suppressors, enhancing their utilization rate, and improving their explosion suppression effectiveness.

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来源期刊

Thermochimica Acta 化学-分析化学

CiteScore

6.50

自引率

8.60%

发文量

210

审稿时长

40 days

期刊介绍： Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes