阻燃剂甲基膦酸二甲酯对褐煤的阻燃效果研究
Study on Flame Retardant Effect of Dimethyl Methylphosphonate on Lignite Coal
-
摘要: 为了研究有机磷甲基膦酸二甲酯阻化剂对煤自燃特性的影响,选取多伦褐煤煤样作为实验煤样,利用程序升温-气相色谱仪联用以及STA-449C型同步热分析仪进行热重实验,研究4种不同浓度阻化剂对比原煤在模拟煤自燃升温的过程中,CO生成的体积分数与煤体温度计算模型,拟合求解出活化能,同时结合热重实验结果,分析不同浓度阻燃剂的阻燃效果。研究结果表明:加入浓度为20%的甲基膦酸二甲酯的煤样在升温过程中CO释放量最小,在煤的自燃过程中,对煤的抑制作用最佳;且加入浓度为20%的阻化剂的活化能E值最大,阻化效果最好,最不易发生自燃。Abstract: In order to study the effect of organophosphorus dimethyl methylphosphonate ester on coal spontaneous combustion characteristics, select the Doren lignite coal sample as the experimental coal sample, and thermogravimetric experiments were carried out using the combination of temperature-gas chromatograph and STA-449C synchronous thermal analyzer. The calculation model of the volume fraction generated by CO and the temperature of coal body in the process of simulating the spontaneous combustion heating of coal by comparing four kinds of resistance agents with different concentrations was studied. The activation energy was obtained by fitting, and the flame retardant effects of different concentrations of flame retardants were analyzed by combining the results of thermogravimetric experiments. The results show that the CO release rate of coal samples with 20% dimethyl methylphosphonate ester is the minimum during the heating process, and in the process of coal spontaneous combustion, the best inhibiting effect on coal is achieved. Moreover, E value of activation energy of the inhibitor with a concentration of 20% was the largest, with the best inhibiting effect and the most difficult spontaneous combustion.
-
-
[1] SMITH A C, MIRON Y, C. LAZZARA C P. Inhibition of spontaneous combustion of coal.Report of Investigations/1988[J]. Missing, 1988: [s.n.]. [2] YUKIHIRO ADACHI, HITOSHI SUGAWARA. Inhibitor for inhibiting carbonaceous powder from heating up/spontaneously igniting[P]. US patent 0069149, 2003. [3] 彭本信.煤的自然发火阻化剂及其阻化机理[J].煤炭学报,1980(3):38-48. [4] 高玉坤,黄志安,张英华,等.碳酸氢盐阻化剂抑制遗煤自燃机理的实验研究[J].矿业研究与开发,2012, 32(1):64-68. [5] 王雪峰,邓汉忠,邓存宝,等.煤自燃阻化剂选择及喷洒工艺研究[J].中国安全科学学报,2013,23(10):105-109. [6] 仲晓星,王德明,尹晓丹.基于程序升温的煤自燃临界温度测试方法[J].煤炭学报,2010,35(S1):128-131. [7] GB/T 482—2008煤层煤样采取方法[S]. [8] GB 474—2008煤样的制备方法[S]. [9] 胡荣祖,高胜利,赵凤起,等.热分析动力学[M].北京: 科学出版社,2008. [10] 徐永亮,王兰云,宋志鹏,等.基于交叉点法的煤自燃低温氧化阶段特性和关键参数[J].煤炭学报,2017, 42(4):935-941. [11] 余明高,袁壮,褚廷湘,等.不同自燃性煤氧化阶段的表征差异[J].重庆大学学报,2017,40(2):37-44. [12] 高玉龙,李林,陈军朝,等.基于活化能计算的煤低温氧化特征与临界点预测[J].重庆大学学报,2017,40(11):20-27. -
期刊类型引用(3)
1. 高科，吕航宇，戚志鹏，刘玉姣. 基于PCA-BP神经网络的巷道通风摩擦阻力系数预测模型. 矿业安全与环保. 2024(01): 7-13 . 
百度学术
2. 梁军. 基于大数据的通风巷道摩擦阻力系数快速确定方法研究. 能源与环保. 2024(04): 51-55 . 百度学术
3. 刘彦青. 基于巷道摩擦阻力系数BP神经网络预测模型的矿井风网风量预测研究. 矿业安全与环保. 2021(02): 101-106 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 161
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 6
下载:
