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Carbonate SCC Experiences in Unusual Locations

机译:碳酸盐SCC在异常位置的体验

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This paper highlights several cases where alkaline-carbonate stress corrosion cracking (ACSCC) occurred in atypical locations, including a cold wall Fluid Catalytic Cracking (FCC) Unit regenerator, sour water stripper (SWS) pumparound piping, SWS ammonia acid gas knockout piping, and a mercaptan oxidation unit. These unusual failure locations highlight the need for a fundamental understanding of the ACSCC mechanism. This paper discusses work done to monitor on-going ACSCC risks through sour water sampling, chemical analysis, and ionic modeling.
机译:本文着重介绍了几种在非典型位置发生碱金属碳酸盐应力腐蚀开裂(ACSCC)的情况,包括冷壁流体催化裂化(FCC)单元再生器,酸水汽提塔(SWS)泵送管道,SWS氨气脱除管道以及硫醇氧化单元。这些异常的故障位置突显了对ACSCC机制的基本了解的需求。本文讨论了通过酸水采样,化学分析和离子建模来监测持续的ACSCC风险所做的工作。

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