通过计算合成氨热再生塔变换气再沸器的安装高度，排除安装高度不够导致壳程中的甲醇液体不能返回到热再生塔的可能性，再对设备结构进行分析，发现热再生塔液位控制不合理，导致壳程中Cl^-和硫化物的浓度不断升高，从而使换热管发生应力腐蚀。针对该情况提出了三种解决办法，其中，通过控制热再生塔的液位在70%左右，且无需改变设备结构，有效解决热再生塔变换气再沸器的腐蚀泄漏问题。

By calculating the installation height of shift gas reboiler of a synthetic ammonia thermal regeneration tower, it was excluded that the possibility of methanol liquid in the shell side could not be returned to the thermal regeneration tower due to the insufficient installation height. Through the analysis of the equipment structure, it was found that the control of the liquid level of thermal regeneration tower was unreasonable, which caused the concentrations of Cl^- and sulfide in shell side to increase continuously, which caused stress corrosion of heat exchange tube. Three solutions were proposed for this situation. Among them, by controlling liquid level of thermal regeneration tower at about 70%, and the corrosion leakage problem of transform gas reboiler of thermal regeneration tower could be effectively solved without changing equipment structure.