德士古水煤浆气化工艺烧嘴外氧喷头端盖失效原因分析  

Failure analysis of Texaco coal water slurry gasification feed injector outer tip cap

作　　者：杨勃 张东东 YANG Bo;ZHANG Dong-dong(China National Coal Group Corporation,Beijing 100120,China;China Coal Shaanxi Energy and Chemical Group Co.,LTD,Yulin,Shanxi 719000,China)

机构地区：[1]中国中煤能源集团有限公司,北京100120 [2]中煤陕西能源化工集团有限公司,陕西榆林719000

出　　处：《煤炭加工与综合利用》2024年第5期62-65,共4页Coal Processing & Comprehensive Utilization

摘　　要：工艺烧嘴是德士古水煤浆气化装置的关键部件,其运行周期直接决定了气化炉的长周期安全稳定运行。从宏观检查、微观金相分析、硬度检测、能谱分析等多角度对气化炉烧嘴外氧喷头端盖因Cl、S腐蚀导致失效的原因进行了分析,研究出材料组成元素及优化夹套结构设计等针对性措施,以延长工艺烧嘴使用寿命。Feed injector is the key equipment of Texaco coal water slurry gasification process,and its operation status directly determines the operation cycle,safety and stability of a gasifier.Based on macroscopic inspection,microscopic metallographic analysis,hardness detection and energy spectrum analysis,the failure mechanism of a feed injector outer tip cap is analyzed,which caused by Cl and S corrosion.The service life of the feed injector is prolonged by studying the material composition elements and optimizing the design of jacket cooling structure.

关 键 词：水煤浆 德士古气化炉 工艺烧嘴 外氧头端盖 Cl腐蚀 S腐蚀 

分 类 号：TQ54[化学工程—煤化学工程]