表面活性剂提高水润湿煤尘作用机理  

Mechanism of Surfactant Improve Water Wetting Coal Dust

作　　者：马艳玲[1] 朱显伟[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤炭技术》2015年第5期195-198,共4页Coal Technology

摘　　要：通过应用分子热力学和表面物理化学知识,理论分析了水和煤尘的微观作用机理,揭示水润湿煤尘的本质是分子之间的短程和长程相互作用力共同作用的结果。从分子层面阐述了表面活性剂对水和煤尘的表面改性原理,它增加了水和煤尘之间的相互作用,减小了水的表面张力及煤尘与水的界面表面张力,体系自由能降低,从而提高水润湿煤尘的能力。According to the knowledge of molecular thermodynamics and surface physical chemistry knowledge,the microscopic interaction of water and coal dust were analyzed,revealing the nature of water wetting coal dust is the result of interaction of a short-range and long-range interaction between molecules.Ddescribes the surface modification principles of surfactant for water and coal dust from the molecular level,which increases the interaction between water and coal dust,reduces water surface tension and the coal dust and water interfacial surface tension,system free energy was decreased,thereby water wetting ability was increased.

关 键 词：煤尘 表面活性剂 表面张力 抑尘 

分 类 号：TD714.4[矿业工程—矿井通风与安全] O647.2[理学—物理化学]