特大型冷凝器法兰带压堵漏方案设计及应用

Design and Application of Plugging under Pressure Solution for Large Condenser Flange

E-4905B苯蒸馏塔塔顶冷凝换热器的封头处发现有高温苯蒸汽泄漏,造成了极大的环境污染。为此,制定了周密的带压堵漏方案,对夹具关键零部件的强度和刚度进行了理论计算,并利用ANSYS的模拟结果与理论计算值进行对比和验证,确保了夹具的安全可靠性。最后,成功地对这个特大型U型管换热器封头实施了带压堵漏处理。施工结果表明该带压堵漏技术能够有效封堵高温苯蒸汽渗漏,消除安全隐患,具有施工周期短、安全环保、不污染地层等优点。

High temperature benzene steam was found to leak from the head of condensation heat exchanger at the top of E-4905B benzene distillation tower,causing great environmental pollution.To this end,a thorough scheme of plugging under pressure was developed,the strength and stiffness of the key parts of the fixture were calculated theoretically,and the simulation results of ANSYS were compared and verified with the theoretical calculation values,to ensure the safety and reliability of the fixture.Finally,the plugging under pressure treatment was successfully implemented on the head of the superlarge U-tube heat exchanger.The construction results showed that the plugging under pressure technology could effectively plug the leakage of high temperature benzene steam,eliminate safety risks,and had the advantages of short construction period,safety and environmental protection,and no pollution of strata.