中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (1): 114-120.doi: 10.16265/j.cnki.issn1003-3033.2020.01.018

• 安全工程技术 • 上一篇    下一篇

矿用CMC/ZrCit/GDL防灭火凝胶特性研究

董凯丽1,2, 王俊峰2,3 教授, 梁择文1,2, 石琪4 教授   

  1. 1.太原理工大学 安全与应急管理工程学院,山西 太原 030024;
    2.太原理工大学 山西省矿井通风与火灾防治工程技术研究中心,山西 太原 030024;
    3.太原理工大学 矿业工程学院,山西 太原 030024;
    4.太原理工大学 化学化工学院,山西 太原 030024
  • 收稿日期:2019-10-15 修回日期:2019-12-05 出版日期:2020-01-28 发布日期:2021-01-22
  • 作者简介:董凯丽 (1995—),女,山西临汾人,硕士研究生,研究方向为矿井火灾防灭火材料E-mail:1211891144@qq.com。
  • 基金资助:
    山西省自然科学基金资助(201801D121265)。

Characteristics of CMC/ZrCit/GDL fire extinguishing gel used for mines

DONG Kaili1,2, WANG Junfeng2,3, LIANG Zewen1,2, SHI Qi4   

  1. 1. School of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan Shanxi 030024, China;
    2. Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention, Taiyuan University of Technology, Taiyuan Shanxi 030024, China;
    3. College of Mining and Technology, Taiyuan University of Technology, Taiyuan Shanxi 030024, China;
    4. College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan Shanxi 030024, China
  • Received:2019-10-15 Revised:2019-12-05 Online:2020-01-28 Published:2021-01-22

摘要: 为防治煤自燃,研制一种由羧甲基纤维素钠(CMC)、柠檬酸锆(ZrCit)和葡萄糖酸-δ-内酯(GDL)组成的新型矿井防灭火凝胶。首先试验测试不同配比凝胶的成胶时间和黏度,选出适合不同情况下煤矿防灭火的凝胶配比;然后采用程序升温试验和热重(TG)试验分析凝胶的阻化性能和对煤自燃失重放热的影响。结果表明:凝胶的加入对煤的自燃有一定抑制作用;凝胶渗透过程中成胶,粘结在煤体的表面和裂隙之间;相同加热时间下加热到180 ℃,水的失重率比32号凝胶高出30%左右,说明凝胶固水性强,热稳定性良好。灭火模拟试验说明使用凝胶灭火,煤体降温快且不易复燃。

关键词: 煤自燃, CMC/ZrCit/GDL凝胶, 阻化性能, 热稳定性, 灭火

Abstract: In order to prevent and control spontaneous combustion of coal, a new fire-suppression gel is developed for mines, which consists of sodium carboxymethylcellulose (CMC), zirconium citrate (ZrCit) and gluconic-δ-lactone (GDL). Firstly, gelation time and viscosity of gel at different ratios were tested, and suitable ratios for fire preventing and extinguishing in different situations were selected. Then, its resistance performance and effects on weight loss and heat release of coal were analyzed through programming temperature and thermogravimetric (TG) experiments. The results show that addition of gel suppresses spontaneous combustion of coal. Gelation occurs during penetration, and it is cemented to coal surface and fills up cracks. When being heated to 180 ℃ within same time, water losses about 30% weight more than No.32 gel, which indicates that gel has strong water retention and good thermal stability. It is demonstrated by fire extinguishing simulation experiments that using gel for extinguishing fire can cool temperature quickly and will not cause re-ignition easily.

Key words: coal spontaneous combustion, CMC/ZrCit/GDL gel, resistance performance, thermal stability, fire extinguishing

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