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  • Users: gearteeth
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  1. gearteeth

    Molten Salt Corrosion - Delayed Coking (Refinery)

    Can any one offer up useful resources on molten salt corrosion within delayed coking units? Process side, not fire side. I have some failure analyses, internal company documents, and G.Y. Lai's book on high temperature corrosion.
  2. gearteeth

    Delayed Coking - Under Deposit Corrosion - LKGO

    We recently experienced through wall failure due to what appears to be under deposit corrosion in the light coker gas oil fraction. The draw temperature on this cut is right at 400F so I would consider run conditions to be too cool for high temperature corrosion mechanisms (sulfidation...
  3. gearteeth

    Stainless Storage Tanks - Chloride SCC Potential

    I have some atmospheric storage tanks constructed of solid 316L stainless steel, that contain spent caustic produced as a by-product of refinery processes. They operate at ambient temperatures, 100F is the hottest temperature seen by temperature indicators. pH is in the range of 13-13.5...
  4. gearteeth

    Low-alloy Steels in Wet H2S Service

    I've been unable to find material discussing the performance of low-alloy steels in wet H2S service with respect to blistering, HIC/SOHIC, etc. I understand that carbon steel is the "go-to" , but if the benefits to low-alloy steels are marginal or non-existent I'm interested in seeing...
  5. gearteeth

    Reformer Pre-Treater Sample Data

    Good Afternoon All, I have received a sample from the boot on the cold separator upstream of a reformer. The sample includes pH, H2S content, NH3 as N, NH4HS, and chloride content. I'm looking for a resource that will give some meaning to these values. By using a combination of the NACE...

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