煤结构差异对润湿型抑尘剂降尘效果的影响

发布时间：2018-03-06 06:12

本文选题：润湿型抑尘剂　切入点：降尘效果　出处：《煤炭技术》2015年03期 　论文类型：期刊论文

【摘要】：为探究煤结构对润湿型抑尘剂降尘效果的影响,选用7个典型变质程度煤种的煤尘为研究对象,并选用4种煤矿常用润湿型抑尘剂,利用表面张力实验确定抑尘剂溶液浓度;此外,采用核磁共振(NMR)实验获得煤结构表征参数—芳香度fa′,根据现场降尘效果试验,将芳香度与降尘效率做相关性分析,得到如下结论:降尘率随着煤阶升高而不断降低;在使用抑尘剂对中低变质程度煤尘进行喷雾降尘时,受煤质影响较小,降尘效果好坏主要取决于降尘剂的选取,而当对高变质程度的煤尘进行喷雾降尘时,此时煤的疏水性很强,降尘效果差的原因主要在于煤自身的结构。
[Abstract]:In order to investigate the influence of coal structure on the dust control effect of wetting type dust suppressant, seven kinds of coal dust of typical metamorphism degree were selected as the research object, and four kinds of wetting type dust suppressant were used in coal mine, and the concentration of dust suppressant solution was determined by surface tension experiment. In addition, the structural characterization parameter of coal, the aromaticity fag, was obtained by NMR. According to the field dust control effect test, the correlation between the aromaticity and the dust removal efficiency was analyzed, and the conclusion was as follows: the dust reduction rate decreased with the increase of coal rank; When dust suppressant is used to spray dust of low and low metamorphic degree coal dust, it is less affected by coal quality. The effect of dust control mainly depends on the selection of dust dedusting agent, but when the dust with high metamorphism degree is sprayed, At this time, the hydrophobicity of coal is very strong, and the main reason for the poor dust reduction effect lies in the structure of coal itself.
【作者单位】：山东科技大学矿业与安全工程学院;
【基金】：国家自然科学基金面上项目(51474139);国家自然科学基金青年基金(51204103) 山东科技大学杰出青年科技人才支持计划(2014JQJH106)资助
【分类号】：TD714.4

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