文献类型：期刊文献

英文题名：Corrosion in high alumina refractory serviced in a bench-scale entrained flow gasifier

作者：Wang, Shuai[1];Guo, Qinghua[1];Gong, Yan[1];Liao, Shuhong[1];Bao, Lingling[1];Yu, Guangsuo[1,2]

机构：[1]East China Univ Sci & Technol, POB 272, Shanghai 200237, Peoples R China;[2]Ningxia Univ, State Key Lab High Efficiency Coal Utilizat & Gre, Yinchuan 750021, Ningxia, Peoples R China

年份：2021

卷号：47

期号：2

起止页码：2214

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20203809201760);WOS:【SCI-EXPANDED(收录号:WOS:000597775800001)】；

基金：This work has been supported by the Project of Key Research Plan of Ningxia Hui Autonomous Region, China (2019BCH01001) and the National Natural Science Foundation of China (21878094, U1604252).

语种：英文

外文关键词：Refractories; Failure analysis; Slag corrosion; Entrained flow gasification

摘要：Corroded microstructure of high alumina refractory serviced in a bench-scale entrained flow gasifier was investigated. The bench-scale gasifier established a relatively real environment: 0.1 MPa, 1400-1450 degrees C and reducing atmosphere. By analyzing the two stages of the slag accumulation and slag further corrosion in pore structures, it was found that the refractory in the pore structures was dissolved and formed low temperature eutectics with the slag penetrating. Moreover, the compositions of the slag infiltrated around the burner plane was compared and the results indicated that the slag infiltrated into the refractory above the burner plane had a higher solubility to the refractory. Thermodynamic equilibrium calculation for the mixture of refractory and slag was used to predict the changes of solid phase and liquid phase. Additionally, as the slag penetrated and the temperature decreased, anorthite (Ca2Al2Si2O8) was the first to precipitate.