四喷嘴气化炉用高铬砖的损毁分析

耐火与石灰 ›› 2020, Vol. 45 ›› Issue (1): 21-25.

四喷嘴气化炉用高铬砖的损毁分析

刘会林1 狄成立2 禹生兵2 段少鹏1

1.中钢集团耐火材料有限公司，洛阳471039; 2.新能凤凰（滕州）能源有限公司，滕州277527

出版日期:2020-02-10 发布日期:2020-02-21

Failure analysis of high chrome brick used in four-nozzle gasifier

Liu Huilin1 Di Chengli2 Yu Shengbing2 Duan Shaopeng1

1.Sino Steel Refractory Co.,Ltd., Luoyang 471039, China；2.Xinneng Fenghuang(Tengzhou) Energy Co.,Ltd., Tengzhou 277527, China

Online:2020-02-10 Published:2020-02-21

摘要/Abstract

摘要：

研究了高铬砖在对置式四喷嘴气化炉中使用后的损毁情况。通过电镜分析表明：用后的高铬砖在渣/砖界面处几乎不挂渣；在界面下存在约3 mm的脱锆层；渣中氧化铁与砖中的氧化铬生成了铁铬尖晶石，并集中在界面脱锆层处；渣中氧化硅、氧化钙在砖中的渗透深度较深；生成的低熔物主要为硅酸铝钙，还有少量的磷酸钙；高铬砖的损毁形式主要是渗透侵蚀与剥落。

关键词: 四喷嘴气化炉, 高铬砖, 损毁分析

Abstract:

This paper studies the failure of high chrome brick used in opposed four-nozzle gasifier.The scan electron microscopy (SEM) analysis result shows that firstly there is almost no slag in the interface of slag/brick of high chrome brick and a ZrO2-free layer with a depth of about 3 mm under the interface,secondly the FeO in slag reacts with the Cr2O3 in brick to form ferrochrome spinel (FeCr2O4),which focuses in the ZrO2-free layer interface,thirdly the SiO2 and CaO of the slag infiltrate deep into the brick and react to form low melting point material mainly such as calcium aluminum silicate and a small amount of calcium phosphate,and finally the failure forms of high chrome brick used in gasifier are mainly infiltrated erosion and spalling.

Key words: Four-nozzle gasifier, High chrome brick, Failure analysis

中图分类号:

TQ175.716

刘会林狄成立禹生兵段少鹏. 四喷嘴气化炉用高铬砖的损毁分析[J]. 耐火与石灰, 2020, 45(1): 21-25.

Liu Huilin Di Chengli Yu Shengbing Duan Shaopeng. Failure analysis of high chrome brick used in four-nozzle gasifier[J]. REFRACTORIES & LIME, 2020, 45(1): 21-25.