煤直接液化条件下神华煤煤浆粘度的测定 -

为研究煤直接液化条件下煤浆的粘度变化,利用剪应力分解法测量了神华煤煤浆在250~450℃的温度范围内的粘度,发现在340℃以前粘度总体呈下降趋势,340℃以后粘度开始上升,并在380℃出现峰值,而后粘度又逐渐下降。对升温速率的影响做了简单分析,发现升温速率变大,出现粘度峰的温度增高。 In order to study variation of coal-oil slurry viscosity at coal direct liquefaction condition,we measured viscosity of Shenhua coal-oil slurry in 250～450℃ by analyzing its shearing strength.We found that,as a whole,the viscosity was decreasing before 340℃,then increasing and attained maximum value at 380℃,then decreasing.We analyzed the influence of temperature-increasing velocity,and found that,the temperature at which the peak value appeared increased as temperature-increasing velocity rising