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 The FITNIR recovery boiler analyzer provides reliable, accurate and true compositions of green liquor as well as providing additional information not offered by any other techniques. Complete liquor compositions can be measured using FITNIR’s technology.
Optimization of Recovery Boiler Smelt Dissolving Tank
Traditional online measurements for the smelt dissolving tank operation include density, conductivity, differential pressure, and bubble tubes. All of these measurement techniques infer a concentration of EA, TTA, sulphide, and/or carbonate. All techniques suffer from drifts due to scaling of the probe. Online titrators have not yet been applied to raw green liquor measurements as the presence of solids complicates the accurate volume metering, which is critical to this wet chemical technique.
More reliable, accurate, and true concentrations of green liquor chemical compositions from FITNIR’s recovery boiler analyzer provide the opportunity to perform TTA control, stabilizing the TTA feeding forward to the slaker and the rest of the recausticizing operation. Furthermore, FITNIR’s measurements of weak wash TTA and oxidized sulphur compositions also allow opportunities for monitoring and controlling the TTA in the dissolving tank.
Benefits of FITNIR RB smelt dissolving tank analyzer-based control
> Reduced TTA (and carbonate, EA, sulphide) variability
> Maximized TTA target while providing true TTA target
> Reduced deadload content (sulphate)
> Reduced lab tests
Contact FITNIR Analyzer Inc. and we can work together to optimize your recovery boiler operations.
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