渣油加氢冷高分底排污水管大小头开裂分析

CRACKING FAILURE ANALYSIS OF THE WASTE WATER TAPERED TUBE IN RESIDUAL OIL HYDROTREATING UNIT

通过对开裂的渣油加氢冷高压分底排污水管线大小头的综合分析 ,结果表明在高硫化氢含量、高压力下 ,即使碳钢的含硫量达 0 .0 0 3% (质量分数 ) 。

The failure tube was analyzed. The results show that fracture was caused by hydrogen induced cracking initiated at brittle inclusion in the surface, though the sulphur content was only 0.003 wt %.