文献类型：期刊文献

英文题名：A new prediction method for the viscosity of the molten coal slag. Part 1: The effect of particle morphology on the suspension viscosity

作者：Zhou, Jie[1,2];Shen, Zhongjie[1,2];Liang, Qinfeng[1,2,3];Xu, Jianliang[1,2];Liu, Haifeng[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, POB 272, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan, Shanxi, Peoples R China

年份：2018

卷号：220

起止页码：296

外文期刊名：FUEL

收录：;EI(收录号：20180704785998);WOS:【SCI-EXPANDED(收录号:WOS:000429419600032)】；

基金：This study was supported by the National Natural Science Foundation of China (U1402272), the Foundation of Shanghai Science and Technology Committee (14dz1200100), the National Nature Science Foundation of China (21376082), and the Foundation of State Key Laboratory of Coal Conversion (Grant No. J16-17-301).

语种：英文

外文关键词：Suspension viscosity; Particle size; Particle shape; Particle aspect ratio; Viscosity model

摘要：Viscosity is the key factor affecting the flowability of molten coal slag in the entrained flow gasifier. The volume fraction and morphology of solid phase in slag are important factors affecting the slag viscosity. In this study, the malt syrup and the particles with different sizes and morphologies were chosen as the simulation medium to study the effect of particle morphology on the suspension viscosity. The influences of size, shape and aspect ratio of solid particles on the suspension viscosity were considered. It was concluded that the suspension viscosity increased with the decrease of the particle size. The suspension viscosity increased with the increase of the aspect ratio of the particles. This phenomenon was more obvious under the high volume fraction of solid phase. With the same size and aspect ratio, the non-spherical particles had greater effect on the suspension viscosity than spherical particles. A correction factor was used to modify the viscosity model with the consideration of particle size, shape and aspect ratio. The prediction results of new modified viscosity model of the suspension finally showed good agreement with the measured experimental data.