惠生-壳牌下行水激冷气化装置腐蚀机理及管道选材探讨

Discussion of the Corrosion Mechanism and Piping Material Selection of Bottom Quench Unit of Wison-Shell Coal Gasification Process

针对惠生-壳牌下行水激冷气化装置中存在的高温氢腐蚀、湿H2S腐蚀、应力腐蚀等腐蚀现象,分别探讨相应的腐蚀机理与影响因素;根据不同的操作区间气体组分和工作条件,提出管道选材要点。

For the corrosion phenomenon of high temperature hydrogen corrosion,wet H2 S corrosion,stress corrosion etc. presence in bottom quench unit of Wison-Shell coal gasification process, this paper discusses the Corresponding corrosion mechanism and influencing factors; depending on the gas composition and working conditions of different operating range,this paper proposes the key points for piping material selection.