1025t/h锅炉屏式过热器爆管分析

Analysis of pipeline explosion on the 1025 t/h boiler platen superheater

爆管是由于管子处于高温、高硫等环境中运行,使管外壁出现大量氧化层;在应力的作用下氧化层开裂裸露出新的金属并再次受到高温腐蚀,形成恶性循环,最终导致脆性爆破。

When the pipeline was exposed to the high temperature and high sulfur environments, outer wall would large oxidation, the oxide layer would crack under the effect of stress, then the metal would again be exposed to the high temperature corrosion, vicious cir- cle was underway, eventually led to brittle blasting.