文献类型：期刊文献

英文题名：Determining criterion of the operating temperature in the refractory brick entrained-flow gasifier based on the coal viscosity characteristics and slag flow process

作者：Lin, Kuo[1];Shen, Zhongjie[1];Liang, Qinfeng[1];Dai, Zhenghua[1];Xu, Jianliang[1];Guo, Xiaolei[1];Liu, Haifeng[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, PO Box 272, Shanghai 200237, Peoples R China

年份：2022

卷号：250

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20220311486215);WOS:【SCI-EXPANDED(收录号:WOS:000783890400012)】；

基金：Acknowledgements This work was supported by the National Natural Science Foun-dation of China [Grant number 21878082, 21776087, 21908063] .

语种：英文

外文关键词：Entrained-flow Gasifier; Refractory brick; Slag plugging; Viscosity-temperature; Characteristics temperature

摘要：Entrained flow gasification technology is currently widely used in the coal chemical industry. However, the selection of candidate coal for achieving smooth slag discharge is significantly limited. Herein, the temperature distribution in the slag tapping hole of the refractory brick lining gasifier was analyzed. The effect of the slag viscosity-temperature characteristics on slag discharge behaviors was evaluated. Specific theoretical criteria rather than empirical estimation were proposed for selecting the operating temperature and candidate coal, which were important for industrial production. The results showed that the temperature in a localized area of the slag tapping hole was very low in current refractory-scheme, which induced the formation of solid-slag. The slag viscosity-temperature characteristics were found to be the key factors influencing the slag discharge process. Moreover, the operating parameters includ-ing the 'sensitive characteristic temperature' and 'no-solid slag characteristic temperature' were pro-posed, in which the temperature range was optimal for different slags.(c) 2022 Elsevier Ltd. All rights reserved.