高钠煤灰对耐火砖腐蚀计算研究  

Study on Erosion Calculation of Refractory Brick with High Sodium Coal Ash

作　　者：王大川 王树青[1] 崔龙鹏[1] 王芳杰[1] 夏国富[1] WANG Da-chuan;WANG Shu-qing;CUI Long-peng;WANG Fang-jie;XIA Guo-fu(SINOPEC Research Institute of Petroleun Processing,Beijing 100083,China)

机构地区：[1]中国石化石油化工科学研究院

出　　处：《煤炭技术》2019年第7期159-161,共3页Coal Technology

摘　　要：高钠煤灰在气化利用中会导致气化炉耐火砖的腐蚀效应.利用热力学计算手段分别研究了高温下高钠煤灰和低钠煤灰对耐火砖的反应机理,发现高钠煤灰具有更强的腐蚀性,其中煤灰主要成分CaO、FeO和Na2O会与耐火砖中Cr2O3发生反应,Na2O会导致Cr2O3熔化为液态熔渣,加剧耐火砖腐蚀.High-sodium coal ash can cause erosion effects of refractory bricks in gasification utilization.High-sodium and low-sodium coal ashes were applied to study the reaction mechanism to refractory bricks under high temperature.It was discovered that high-sodium coal ash had stronger erosion effect,main components of coal ash CaO,FeO and Na2O would react with Cr2O3,Na2O would cause Cr2O3 to melt into liquid slag which increased the erosion of refractory bricks.

关 键 词：煤气化 气化炉 腐蚀 

分 类 号：TQ533[化学工程—煤化学工程]