文献类型：期刊文献

英文题名：Application and corrosion characteristics of chrome-free SiC-MgAl2O4 refractory linings serviced in an entrained flow gasifier

作者：Liu, Kuiyu[1];Guo, Qinghua[1];Gong, Yan[1];Xia, Yi[1];Wang, Xingjun[1];Li, Hongxia[2];Sun, Honggang[2];Song, Xudong[3];Yu, Guangsuo[1,3]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Sinosteel Luoyang Inst Refractories Res Co Ltd, State Key Lab Adv Refractories, Luoyang 471039, Henan, Peoples R China;[3]Ningxia Univ, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Peoples R China

年份：2024

卷号：50

期号：22

起止页码：45006

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20243516947513);WOS:【SCI-EXPANDED(收录号:WOS:001338850800001)】；

基金：This work has been supported by the National Natural Science Foundation of China (U21A2059, 21878094) , Shanghai Rising-Star Program (21QA1402300) , and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (Grant No. 2022-K42) .

语种：英文

外文关键词：Entrained-flow gasifier; Post-mortem analysis; Degradation; Slag corrosion

摘要：This study investigated the degradation mechanisms of SiC-MgAl2O4 refractory materials in a bench-scale entrained flow gasifier. Layered degradation and protective SiO2 formation on SiC aggregates were observed by macroscopic, microscopic, phase analysis, and thermodynamic calculations. A comparative investigation of erosion rates revealed that SiC-MgAl2O4 materials located away from the burner had an unusually low erosion rate of 0.0017 mm/h, which was significantly lower than that reported in their counterparts situated near the burner (0.0167 mm/h). This performance surpassed even that of high-chrome refractory materials positioned at a similar distance from the burner. The findings underscore the remarkable durability of SiC-MgAl2O4, demonstrating its significant potential as a sustainable and chrome-free alternative for application in harsh gasification conditions. The environment-specific degradation patterns, characterized by the formation of mullite and cordierite, revealed the complex interaction between refractory materials and gasification environments. This understanding offers valuable insights that can inform the development and implementation of chrome-free refractory materials under industrial gasification conditions.