A comparison between superfine magnesium hydroxide powders and commercial dry powders on fire suppression effectiveness

被引：59
作者：
Kuang, Kaiqian [1 ]
Huang, Xin [1 ]
Liao, Guangxuan [1 ]
机构：
[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Peoples R China
来源：
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2008年 / 86卷 / B3期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
superfine and dry powder; fire suppression effectiveness; particle size; thermal gravity analysis;
D O I：
10.1016/j.psep.2007.11.002
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effectiveness of superfine magnesium hydroxide powders and commercial dry powder in fire suppression were compared in a laboratory-scale, immovable fire suppression apparatus. The investigation focused on their suppression effectiveness under various pressures. It likewise studied the relationship between the powders' surface structures and their effectiveness on fire suppression. The microcosmic structure of the powders was observed by scanning electron microscope (SEM), while the Thermal Gravity Analysis (TGA) technique was used to analyze the thermal behavior of the superfine magnesium hydroxide powders. By analyzing the results, it could be concluded that the pressure, the particle size, and the microcosmic structure of the powders' surface mainly decide the capability of the powders to extinguish the fire. Comparing this with commercial dry powders, superfine magnesium hydroxide powders extinguished the fire in less than 10s. (c) 2007 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：182 / 188
页数：7
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