[1]王凯,徐敏,杨孟娇,等.多因素影响的煤尘润湿性机理研究*[J].中国安全生产科学技术,2023,19(11):78-85.[doi:10.11731/j.issn.1673-193x.2023.11.011]
WANG Kai,XU Min,YANG Mengjiao,et al.Study on mechanism of coal dust wettability influenced by multiple factors[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(11):78-85.[doi:10.11731/j.issn.1673-193x.2023.11.011]
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多因素影响的煤尘润湿性机理研究*
WANG Kai,XU Min,YANG Mengjiao,et al.Study on mechanism of coal dust wettability influenced by multiple factors[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(11):78-85.[doi:10.11731/j.issn.1673-193x.2023.11.011]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 19
- 期数:
- 2023年11期
- 页码:
- 78-85
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2023-11-30
文章信息/Info
- Title:
- Study on mechanism of coal dust wettability influenced by multiple factors
- 文章编号:
- 1673-193X(2023)-11-0078-08
- Keywords:
- coal dust; sodium sulfate; dust suppressant; wettability; adsorption
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 为解决煤矿井下生产过程中高浓度煤尘带来的不利影响，选取4种表面活性剂，通过表面张力、接触角和沉降实验，研究无机盐添加剂、阴-非离子表面活性剂等不同因素影响下的煤尘润湿规律，提出以阴离子表面活性剂十二烷基苯磺酸钠（SDBS）、非离子表面活性剂聚乙二醇辛基苯基醚（Triton X-100）及无机盐（Na2SO4）作为井下抑尘剂除尘的优选方案。研究结果表明：无机盐与溶液的疏水尾基发生“盐析”作用，使其疏水作用减弱，溶液表面张力降低。0.05%SDBS和0.3%Triton X-100作为阴-非表面活性剂复配单体时润湿性能最好，在阴-非离子表面活性剂复配溶液中加入合适的无机盐能显著增强溶液的润湿性能，无机盐阴离子的加入恢复高岭土的吸附能力并增加煤表面的亲水性位点。研究结果可为多因素影响煤尘润湿性的抑尘剂的研究提供参考。
- Abstract:
- To solve the adverse effect caused by high concentration coal dust during the underground production of coal mine,four surfactants were selected to study the wetting law of coal dust under the influence of different factors such as inorganic salt additives and anionic-nonionic surfactants through the surface tension,contact angle and sedimentation experiments.An optimal scheme of dust removal was proposed,which adopted the anionic surfactant sodium dodecyl benzene sulfonate (SDBS),non-ionic surfactant polyethylene glycol octylphenyl ether (Triton X-100) and inorganic salt (Na2SO4) as underground dust suppression agents.The results show that the “salting-out” effect of inorganic salt and the hydrophobic tail group of solution weakens its hydrophobic effect and reduces the surface tension of solution.The wettability of 0.05%SDBS and 0.3% Triton X-100 is the best when they are combined monomers of anionic-nonionic surfactants.The addition of appropriate inorganic salts to the mixed solution of anionic-nonionic surfactants can significantly enhance the wettability of the solution.The addition of inorganic salt anions can restore the adsorption capacity of kaolin and increase the hydrophicity site on the coal surface.The research findings can provide valuable references for the study of dust suppressants that influence the wetting characteristics of coal dust through multifactorial factors.
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备注/Memo
- 备注/Memo:
-
收稿日期： 2023-05-11
* 基金项目： 中央高校基本业务费交叉培育项目（2022JCCXAAQ01）；河南理工大学实验室开放课题项目（WS2021A01）；湖北省重点实验室开放课题项目（2021zy001）
作者简介： 王凯，博士，教授，主要研究方向为矿山安全、应急与安全管理。
通信作者： 周彪，博士，副教授，主要研究方向为氟碳材料和建筑火灾。
