煤焦油石油焦浆成浆特性实验研究

摘要

通过研究煤焦油石油焦浆的成浆特性、流变性以及稳定性,考虑了浆体温度和添加剂对油焦浆成浆特性的影响.随浆体温度的升高,油焦浆的黏度逐渐下降.往浆体中加入了十二烷基苯磺酸钠或op乳化剂后,浆体的黏度随温度的升高下降更加迅速.当石油焦浓度小于30％时,浆体呈现出剪切变稠的胀塑性流体特性;随浓度的增大,当浓度大于40％的情况下,浆体呈现出剪切变稀的假塑性流体特性.油焦浆的稳定性较差,通过加入十二烷基苯磺酸钠或op乳化剂,可以使浆体在静置3d和7d后仍保持较好的流动性和稳定性,但随浆体浓度的增大,稳定性能会降低,特别是当石油焦浓度超过50％后,浆体将无法稳定保存3d以上.%This study focused on the co-slurrying properties of petroleum coke and coal tar,considering the effect of slurry temperature and additives.With the increase of slurry temperature,the viscosity of the petroleum coke-coal tar slurry was decreased.Adding some additives into the slurry made the decrease of the slurry viscosity more remarkable while the slurry temperature increased.The petroleum coke-coal tar slurry exhibited a shear-thickening when the solid concentration was less than 30％,while it showed a shear thinning when the solid concentration exceeded 40％.The static stability of the petroleum coke-coal tar slurry was poor and could be improved by adding SDBS or op emulsifier.With the increase in the solid concentration,the static stability of the petroleum coke-coal tar slurry became poorer.It was difficult for the petroleum coke-coal tar slurry to be steadily stored for more than three days,especially when the solid concentration was over 50％.