合成气装置脱硫操作中腐蚀问题的探讨

On the corrosion in the desulfurization procedure of the synthesis gas device

论述合成气装置所用原料——重油中硫含量大幅度上升,导致脱硫系统设备、管线腐蚀严重的现象,生产实践中发现易积硫的部位腐蚀比其它部位严重;探讨脱硫操作中出现管线、塔、循环槽等腐蚀原因,分析腐蚀的机理为H2S导致的化学腐蚀和电化学腐蚀,了解腐蚀的主要破坏形态是全面腐蚀和局部腐蚀,并针对腐蚀采取了一系列措施,有效地解决了脱硫系统的腐蚀问题,保证了脱硫系统的安全平稳运行。

Through the analysis of the reasons of corrosion in the pipeline,tower and circulating tank in the desulfurization procedure of the synthesis gas device/plant,the author tries to know better of the fracture morphology and to find out better prevention and solution for the corrosion problem.