催化裂化装置稳定塔安全阀弹簧断裂失效分析

摘要

The analysis of fracture of spring in safety valve of FCCU stabilizer T304 shows that the spring fracture was the result of stress corrosion cracking induced by corrosion fatigue. The sensitive media is condensate film containing H2S. Isolated safety valve is recommended for installation in stabilizer.%对某炼化分公司催化裂化装置稳定塔T304安全阀弹簧的断裂原因进行了失效分析，结果表明弹簧失效是由腐蚀疲劳诱发、应力腐蚀裂纹引起的，其敏感介质为含H2S的凝结水膜。提出了采用隔离式安全阀的建议。