新疆伊犁南台子煤热力学参数的实验测定  

Experimental Determination of Coal Thermodynamic Parameters in Xinjiang Yili Nantaizi

作　　者：刘燕 李玉林 LIU Yan;LI Yulin(Shenhua Xinjiang Chemical Co.,Ltd,Urumqi,Xinjiang,831404)

机构地区：[1]神华新疆化工有限公司,新疆乌鲁木齐831404

出　　处：《神华科技》2018年第3期63-69,共7页Shenhua Science and Technology

摘　　要：采用气相色谱法,测定了新疆伊犁南台子煤的表面性质。以正己烷、正庚烷、正辛烷、正壬烷作为非极性探针测定其表面色散自由能。经计算得出煤在323K、333K、343K、353K下的表面色散自由能(γds),分别为41.90mJ/m^2、40.97mJ/m^2、38.65mJ/m^2和36.44mJ/m^2。结果表明,煤表面色散自由能随温度升高呈线性降低。此外还计算了煤的无限稀释活度系数、溶剂和煤的相互作用参数,以及煤的溶解度参数。结果显示,这些参数都随温度的升高而降低,表明温度的升高有利于煤的溶解。此结果为煤表面性质提供了数据。The surface properties of Nantaizi coal in Yili,Xinjiang were determined by gas chromatography.The surface dispersion free energies of n-hexane,n-heptane,n-octane and n-nonane were measured with nonpolar probe.The surface dispersion free energy(γd s)of coal at 323K、333K、343K、353K is 41.90mJ/m2、40.97mJ/m2、38.65mJ/m2 and 36.44mJ/m2.The results show that the dispersion free energy of coal surface de-creases linearly with the increase of temperature.In addition,the infinite dilution activity coefficient of coal,the interaction parameter between solvent and coal and the solubility parameter of coal are calculated.The re-sults show that these parameters decrease with the increase of temperature,which indicates that the increas-ing of temperature is beneficial to the dissolution of coal.The results provide data for coal surface properties.

关 键 词：煤 气相色谱 表面色散自由能 无限稀释活度系数 相互作用参数 溶解度参数 

分 类 号：TQ530.2[化学工程—煤化学工程]