Effects of pH on rheological characteristics and stability of petroleum coke water slurry

作     者：Fu-Yan Gao Eric-J.Hu 

作者机构：Ningbo Institute of Technology Zhejiang University School of Mechanical Engineering University of Adelaide 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2016年第13卷第4期

页      面：782-787页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：support from the National Natural Science Foundation of China (No. 51506185) Zhejiang Provincial Natural Science Foundation of China (No. LQ15E060002) 

主　　题：Petroleum coke Petroleum coke water slurry pH Slurrying concentration Rheological characteristics Stability 

摘      要：In this study, the effects of pH on slurrying properties of petroleum coke water slurry（PCWS） were investigated. The slurrying concentration, rheological characteristics and stability of PCWS were studied with four different types of additives at pH varying from 5 to *** results showed that the slurrying concentration, rheological characteristics and stability of PCWS all increased at first and then decreased with increasing pH from 5 to 11,and a pH of around 9 was found to be the most favorable acid–alkali environment to all these three slurrying properties. It was also indicated that only in a moderate alkaline environment can the additives be active enough to react with particle surfaces sufficiently to obtain good slurrying concentration and form a stable three-dimensional network structure, which can support strong pseudoplastic characteristics and good stability. An acid environment was a very unfavorable factor to the slurrying properties of PCWS.