Petroleum Science >2018,??Issue 1:??157-163 DOI: https://doi.org/10.1007/s12182-017-0205-y
Inherent relations between yield stress and stability of bubble petroleum coke water slurry Open?Access
文章信息
作者：Fu-Yan Gao and Eric J. Hu
作者单位：
Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, People’s Republic of China and School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
投稿时间：2017-04-28
引用方式：Gao, FY. & Hu, E.J. Pet. Sci. (2018) 15: 157. https://doi.org/10.1007/s12182-017-0205-y
文章摘要
The stability of petroleum coke water slurry (PCWS) is currently a hot topic. The inherent relationship between yield stress and stability of bubble-PCWS was studied through orthogonal experiments and range analysis in this work. The results showed that the stability of bubble-PCWS was positively related to the yield stress and that the yield stress could be greatly impacted by the operation conditions during preparation of bubble-PCWS. The main factors affecting the yield stress of bubble-PCWS were solid concentration, aeration time and dosage of frother. However, the effects of aperture size of air distribution plates and type of frother on the yield stress were slight within the experimental range. The optimal conditions for the greatest yield stress were as follows: aeration time of 30 min, solid concentration of 65 wt%, frother dosage of 0.030 wt% of the air-dried pulverized petroleum coke, aperture size of air distribution plate of 2–5 lm and AOS frother. The yield stress and the pour rate of bubble-PCWS under this optimum operation condition could reach maxima of more than 0.4 Pa and 96%, respectively.
关键词
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Petroleum coke, Petroleum coke water slurry (PCWS), Stability, Yield stress, Orthogonal experiment