文献类型：期刊文献

英文题名：Influence of alkaline additive on viscosity of coal water slurry

作者：Wang, Chunyu[1,2];Zhao, Hui[1,2];Dai, Zhenghua[1,2];Li, Weifeng[1,2];Liu, Haifeng[1,2]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, POB 272,130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2019

卷号：235

起止页码：639

外文期刊名：FUEL

收录：;EI(收录号：20183405720867);WOS:【SCI-EXPANDED(收录号:WOS:000447791900065)】；

基金：This research was supported by the National Key R&D Program of China (2018YFC0808500), the National Natural Science Foundation of China (21506059), the Shanghai Engineering Research Center of Coal Gasification (18DZ2283900), the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：CWS; Viscosity; Alkaline additive; Zeta potential

摘要：This paper was mainly about the influence of alkaline additive on the viscosity of coal water slurry (CWS). The study showed that the viscosity of CWS was sensitive to the alkaline additive. Less than 1% of alkaline additive could reduce the viscosity to more than half of the viscosity of the CWS without alkaline additive. As the content of the alkaline additive increased, the viscosity of CWS increased. The change in zeta potential, the freedom and content of the water in the CWS, the microstructure of the particles in the CWS as well as the FT-TR spectrum of the coal particles was investigated. The results show that with low concentrations of the alkaline solutions, the zeta potential of the particles in the CWS decreased which mean the absolute value of the zeta potential increased and the content of the free water in the CWS were increased. Meanwhile, the nonpolar of the particle with alkaline salts strengthened. These were all benefited to reduce the viscosity.