文献类型：期刊文献

英文题名：Influence of coal blending on ash fusion property and viscosity

作者：Wang, Dachuan[1,2];Liang, Qinfeng[1,2,3];Gong, Xin[1,2];Liu, Haifeng[1,2];Liu, Xia[1,2]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, 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 030001, Peoples R China

年份：2017

卷号：189

起止页码：15

外文期刊名：FUEL

收录：;EI(收录号：20164402970020);WOS:【SCI-EXPANDED(收录号:WOS:000387775500003)】；

基金：This research was supported by the Foundation of Shanghai Science and Technology Committee (14dz1200100), and Foundation of State Laboratory of Coal Conversion (Grant No. J16-17-301).

语种：英文

外文关键词：Gasification; Coal blending; Ash fusion; Viscosity

摘要：Coal blending is a practical method to reduce ash percentage and improve fusion properties for gasifiers. High viscosity coal was investigated to improve its ash fluidity by blending with low viscosity coal. Both single coal and blended coal samples were studied to compare their ash fusion properties and viscosities. Thermodynamic calculations of slag contents were performed. Results revealed that the blended coals ash fusion temperatures differed little while their viscosities presented much difference. Viscosities of blended coal slags were similar at high temperature, however, the patterns of blended coal viscosity-temperature curve showed obvious divergence below 1450 degrees C. Thermodynamic calculations and X-ray diffraction results revealed that the content adequacy of mullite and quartz in the slag caused the solid phase separation from molten slag, which consequently resulted in the rapid increase in viscosity. The critical temperature and T-25 of blended coals showed good linear dependence with blending ratio. (C) 2016 Elsevier Ltd. All rights reserved.