炼磷炉炉壳炸裂原因分析  

Bursting Reason Analysis of Phosphor-making Furnace Steel Shell

作　　者：吴安术[1] 陈义[1] 陈兴元[1] 

机构地区：[1]攀钢集团研究院有限公司,成都611731

出　　处：《理化检验（物理分册）》2010年第11期723-727,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某制磷厂的八座炼磷炉在使用9～10 a(年)后,其钢结构圆柱形炉壳相继发生炸裂。通过宏观检验、金相检验、断口分析和化学成分分析等方法对炉壳钢板炸裂原因进行了分析。结果表明:在磷燃烧产生的高温和反复开炉/停炉的条件下,炉壳材料发生了氢损伤、珠光体球化、特大晶粒和应变时效等脆化效应,磷酸腐蚀减薄炉壳,加上热胀冷缩应力共同作用使炉壳最终发生炸裂。The steel cylindrical shell of eight phosphor-making furnace bursted one after another after nine to ten years service in one phosphor-making fumace.By means of macroscopic examination,metallographic examination,fracture analysis,chemical composition analysis and so on,the shell burst reason was analyzed.The results showed that because of high temperatures of phosphorus combustion and repeated start and stop operation of phosphor-making furnace,the embrittlement effects such as hydrogen damage of shell material,pearlier spheroidization,large grain size and strain aging led to the shell thinning by phosphoric acid,together with the results of thermal expansion and contraction joint action of stress,the shell bursted at last.

关 键 词：炼磷炉壳 炸裂 磷燃烧 氢损伤 特大晶粒 磷酸腐蚀 

分 类 号：TQ126.316[化学工程—无机化工]