低阶烟煤热解半焦制浆黏度模型的建立

选用双鸭山东荣长焰煤为原料,利用马弗炉进行中低温热解实验,考察热解温度对半焦哈氏可磨度和空气干燥基水分的影响。通过制浆实验,研究半焦哈氏可磨度和空气干燥基水分对半焦制浆表观黏度的影响。利用SPSS软件进行实验数据线性回归分析,得到低阶烟煤热解半焦制浆表观黏度模型。结果表明：热解半焦的空气干燥基水分和哈氏可磨度与半焦制浆表观黏度均具有较好的相关性,其中由于煤结构的分解和缩聚而导致的可磨性的变化是影响半焦成浆性的主要因素。表观黏度模型能够较为准确地预测半焦制浆表观黏度,可用于低阶烟煤中低温热解半焦成浆性评价。

Development of slurry viscosity model from low rank bituminous coal pyrolyzed at midium-low temperature

This paper starts with pyrolyzing Dongrong long flame coal at medium-low temperature and investigating the effects of pyrolysis temperature on HGI and air dry, basis moisture of semicokes. The pa- per proceeds with the study of the relation among HGI, air dry basis moisture and the apparent viscosity of slurry from semicokes depending on CWS preparation experiments and with linear regression analysis of experimental data using SPSS software, and ends with apparent viscosity model for slurry from low rank bituminous obtained. The results show that both HGI and air dry basis moisture have better correlation with the ability of slurry- from semicokes, and HGI variation due to the decomposition and polycondensati- on of coal structure is the niain factor influencing the slurry ability. The model, capable of more precise prediction of apparent viscosity of slurry ability could work for the evaluation of the slurry ability from low rank bituminous pyrolyzed at medium-low temperature.