文献类型：期刊文献

英文题名：Modeling study of residence time of molten slag on the wall in an entrained flow gasifier

作者：Zhang, Binbin[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, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, State Key Lab Coal Convers, Inst Coal Chem, Beijing, Peoples R China

年份：2018

卷号：212

起止页码：437

外文期刊名：FUEL

收录：;EI(收录号：20174304305221);WOS:【SCI-EXPANDED(收录号:WOS:000414574800045)】；

基金：This study was supported by the Foundation of Shanghai Science and Technology Committee (14dz1200100), the National Natural Science Foundation of China (U1402272), the National Natural 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：Gasification; Coal slag; Residence time; Flow model

摘要：In an entrained flow coal gasifier, the slag viscosity property is of great importance to the slagging process. The slag viscosity is affected by the crystal mineral and the crystallization process has a time effect. The molten slag residence time in gasifier was calculated by slag flow model to estimate the isothermal time or crystal growth time during the cooling process. The residence times of tracer slag unit were calculated by the slag velocity. The residence time distribution (RTD) curve was obtained and the mean residence time was about 100-500 s in this study. Moreover, the molten slag mean residence time decreases significantly with increasing ash contents in coal, decreases slightly with increasing operating temperatures, and increases with increasing slag critical viscosities and temperatures. In addition, a plug flow reactor (PFR) series a similar laminar flow tubular reactor model was used to analysis the RTD curves of molten slag with different operating conditions.