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Mitigate reactor failures due to graphitization

03.01.2013  |  Al-Enazi, S. ,  SABIC Technology Centre, Jubail Industrial City, Saudi ArabiaAl-Meshari, A. ,  SABIC Technology Centre, Jubail, The Kingdom of Saudi ArabiaAbdelgalil, A. ,  SABIC Technology Centre, Jubail, The Kingdom of Saudi Arabia

Keywords: [corrosion] [metallurgy] [carbonsteel] [stainless steel] [reactor]

Graphitization occurs in carbon steel (CS) reactors in high-temperature service (> 455°C). As discussed in this case history, the shell of a methyl tertiary butyl ether (MTBE) reactor became susceptible to elevated-temperature oxidation that initiated corrosion conditions. In addition, high-temperature fluctuations fostered stresses that promoted fatigue of the MTBE reactor shell and, ultimately, caused an emergency shutdown of the unit.

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