煤矿安全2024，Vol.55Issue(10)：64-71,8.DOI:10.13347/j.cnki.mkaq.20240268
CaCl2溶液对煤自燃的阻化效果的影响实验研究
Experimental study on the effect of CaCl2 solution on the inhibition effect of coal spontaneous combustion
摘要
Abstract
In this paper,CaCl2 solution was used as an inhibitor.Raw coal was soaked in CaCl2 solution with a mass concentration of 20%,and inhibited coal samples were prepared at different temperature conditions(30℃,50℃,70℃and 90℃)for different peri-ods of time.The inhibition effect of CaCl2 solution on coal spontaneous combustion was studied through temperature programmed tests and infrared spectrum experiments.It was found that the content of surface active groups(-CH3,-CH2,-COOH,-C=O)and coal oxygen consumption rate decreased significantly with the increase of pre-inhibition temperature and pre-inhibition time.The in-hibition rate and cross point temperature also increase significantly.The results show that increasing the pre-inhibition temperature and the pre-inhibition time can obviously improve the inhibitory effects on the spontaneous combustion characteristics of coal.关键词
煤自然发火/卤盐/无机阻化剂/预阻化/阻化率/交叉点温度Key words
coal spontaneous combustion/halide salt/inorganic inhibitor/pre-inhibition/inhibition rate/cross-point temperature分类
矿业与冶金引用本文复制引用
薛恩思..CaCl2溶液对煤自燃的阻化效果的影响实验研究[J].煤矿安全,2024,55(10):64-71,8.基金项目
国家自然科学基金资助项目(52174230) （52174230）
