【摘要】 通过三种不同的方法(CO2吸附法、N2吸附法和压汞法)测试了不同变质程度煤的孔结构性质,分析了煤的孔结构特性与水煤浆性质之间的关系。结果表明,煤的孔结构特性对水煤浆性质的影响较为复杂,主要是煤的大孔结构对煤浆成浆性的影响。在相近的孔体积和孔径分布下,煤的成浆性差别较大。孔结构特性本身作为一个独立的因素不能完全体现出对水煤浆性质的影响程度,与煤的表面性质如含氧官能团性质、煤表面的疏水性以及煤的吸水性等密切相关,共同影响着水煤浆的性质。更多还原

【Abstract】 Pore structure of Chinese coals with various ranks was characterized with three analytical methods(carbon dioxide adsorption,nitrogen adsorption,mercury method),and its effect on the properties of coal water slurry(CWS) was discussed.The results indicate that there is less correlativity between the pore structure and the properties of CWS.Different slurryabilities of CWS are found for coals with similar pore volume and pore size distributions.The properties of CWS is dependent on not only coal pore structures itself but also the surface features of physical chemistry such as the content of oxygen-containing functional groups,coal-water contact angle and the moisture-holding capacity of coal.更多还原