煤焦油石油焦浆成浆特性实验研究

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3 d和7 d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3 d以上。...

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Bibliographic Details
Published in煤炭学报 Vol. 42; no. 6; pp. 1585 - 1590
Main Author 王铭逸 刘建忠 程军 王智化 周俊虎
Format Journal Article
LanguageChinese
Published 2017
Subjects
成浆特性
流变特性
添加剂
煤焦油石油焦浆
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Summary: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3 d和7 d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3 d以上。
Bibliography: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%.
petroleum coke-coal tar slurries ; additive ; slurr
ISSN:0253-9993