摘要
设计了一种在雾化状态下快速吸收煤矿井下瓦斯气体,降低瓦斯浓度和爆炸危险的水基瓦斯吸收材料.该材料以水为载体,Span80为瓦斯吸收剂,无机盐为添加剂.以瓦斯的主要成分甲烷作为瓦斯的模型气体,采用顶空气相色谱法测定材料吸收甲烷的含量,研究了Span80与无机盐添加剂NaHCO3,NaClO,CH3COONa,KHCO3和NaOH复配后得到的吸收材料在雾化状态下对甲烷的吸收作用,并用进行气体爆炸反应的爆炸罐作为模拟瓦斯爆炸的实验平台.以爆炸后剩余甲烷的含量和爆炸过程中最高爆炸压力作为参数,对吸收材料的抑爆效果进行初步研究.结果表明:该材料对甲烷的吸收效果比纯水好,并且对甲烷与空气混合物的爆炸有一定的抑制作用;碱性无机盐可以增加Span80在水中的分散性,增加甲烷与吸收剂的接触面积,其在水中形成的混合胶束可增溶甲烷.
A kind of water-based absorption material was designed, which could decrease the concentration of mine gas by absorbing methane under atomization condition and reduce the explosion hazard. The material is composed of water as matrix, Span80 as methane absorbent, and inorganic salt as additive. Methane the main component of mine gas was used as a model of mine gas. The absorption of methane-absorption materials with different proportion of Span80 and inorganic salts such as NaHCO3, NaC10, CH3COONa, KHCO3 and NaOH were studied. And using head space gas chromatography to determine the content of methane absorbed. The explosion suppression effects of absorption materials were studied tentatively in explosion chamber using the maximum explosion pressure and residual methane content after explosion as parameters. The results indicate that the absorption material can absorb more methane than water and can partly inhibit the explosion of the mixture of methane and air; alkaline inorganic salt can improve the dispersion of Span80 in water, thus increasing the contact area of methane and Span80; Span80-inorganic salt mixed micelle can solubilize methane.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2009年第3期366-370,共5页
Journal of China Coal Society
关键词
SPAN80
瓦斯
雾化吸收
抑爆材料
表面活性剂
Span80
gas
atomization absorption
explosion suppression material
surfactant
