ESTIMATING THE FIRST MELTING TEMPERATURE OF FIRESIDE DEPOSITS IN RECOVERY BOILERS

• The first melting temperature (FMT) of fireside deposits is important in recovery boiler operation. Corrosion of superheater tubes occurs rapidly if tube surface temperatures exceed the FMT of the deposits on the tubes.
• This TIP summarizes available information on the effects of deposit composition on FMT, and shows how to estimate the FMT based on deposit composition.
• This TIP summarizes available information on the effect of composition on the FMT, and shows how to estimate the FMT from deposit composition.

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